java.lang.Object
- org.apache.derby.impl.sql.execute.BaseActivation

All Implemented Interfaces:

Dependable, GeneratedByteCode, Activation, Dependent, CursorActivation

Direct Known Subclasses:

ConstantActionActivation, CursorActivation
```
public abstract class BaseActivation
extends java.lang.Object
implements CursorActivation, GeneratedByteCode
```
BaseActivation provides the fundamental support we expect all activations to have. Doesn't actually implement any of the activation interface, expects the subclasses to do that.

Field Summary

Fields
Modifier and Type	Field	Description
`private int[]`	`autoGeneratedKeysColumnIndexes`
`private java.lang.String[]`	`autoGeneratedKeysColumnNames`
`private boolean`	`autoGeneratedKeysResultSetMode`
`private java.util.Calendar`	`cal`
`private boolean`	`checkRowCounts`
`protected boolean`	`closed`
`protected ContextManager`	`cm`
`private java.util.Stack<ConstantAction>`	`constantActionStack`	Stack of ConstantActions.
`private java.lang.String`	`cursorName`
`private TableDescriptor`	`ddlTableDescriptor`
`private boolean`	`forCreateTable`
`private CursorResultSet`	`forUpdateIndexScan`
`private GeneratedClass`	`gc`
`private long`	`indexConglomerateNumber`
`protected int`	`indexOfSessionTableNamesInSavedObjects`
`private ScanController`	`indexSC`
`private boolean`	`inUse`
`private boolean`	`isValid`	By setting isValid to false, we can force a new activation to be used even if the prepared statement is still valid.
`private LanguageConnectionContext`	`lcc`
`private static long`	`MAX_SQRT`
`private long`	`maxRows`
`protected int`	`numSubqueries`
`private Activation`	`parentActivation`	The 'parentActivation' of an activation of a statement executing in the root connection is null.
`protected java.util.Hashtable<java.lang.String,java.util.Vector<TemporaryRowHolder>>`	`parentResultSets`
`protected ExecPreparedStatement`	`preStmt`
`protected ParameterValueSet`	`pvs`
`protected CursorResultSet[]`	`raParentResultSets`
`protected ResultDescription`	`resultDescription`
`protected ResultSet`	`resultSet`
`private boolean`	`resultSetHoldability`
`protected ExecRow[]`	`row`
`private java.util.HashSet<java.lang.Integer>`	`rowCountsCheckedThisExecution`
`private boolean`	`scrollable`
`private boolean`	`singleExecution`
`private SQLSessionContext`	`sqlSessionContextForChildren`	The SQL session context to be used inside a nested connection in a stored routine or in a substatement.
`private java.sql.ResultSet`	`targetVTI`
`private static int`	`TEN_PERCENT_THRESHOLD`
`private ConglomerateController`	`updateHeapCC`
`protected java.lang.String`	`UUIDString`	For dependency tracking
`protected UUID`	`UUIDValue`	For dependency tracking
`private java.sql.SQLWarning`	`warnings`

Fields inherited from interface org.apache.derby.catalog.Dependable
ACTIVATION, ALIAS, COLUMNS_IN_TABLE, COLUMNS_PERMISSION, CONGLOMERATE, CONSTRAINT, DEFAULT, FILE, HEAP, INDEX, PERM, PREPARED_STATEMENT, ROLE_GRANT, ROUTINE_PERMISSION, SCHEMA, SEQUENCE, STORED_PREPARED_STATEMENT, TABLE, TABLE_PERMISSION, TRIGGER, VIEW

Constructor Summary

Constructors
Modifier Constructor Description

protected BaseActivation()

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`addWarning(java.sql.SQLWarning w)`	Add a warning to the activation
`static void`	`allocateQualArray(Qualifier[][] qualifiers, int position, int length)`	Allocate an array of qualifiers and initialize in Qualifier[][]
`boolean`	`checkIfThisActivationHasHoldCursor(java.lang.String tableName)`	Temporary tables can be declared with ON COMMIT DELETE ROWS.
`protected void`	`checkPositionedStatement(java.lang.String cursorName, java.lang.String psName)`	Check that a positioned statement is executing against a cursor from the same PreparedStatement (plan) that the positioned statement was original compiled against.
`void`	`checkStatementValidity()`	Check the validity of the current executing statement.
`void`	`clearCurrentRow(int resultSetNumber)`	Clear the current row for the specified ResultSet.
`void`	`clearHeapConglomerateController()`	Clear the ConglomerateController to be used for an update or delete.
`void`	`clearIndexScanInfo()`	Clear the info for the index to be re-used for update/delete.
`void`	`clearParentResultSets()`	prepared statement use the same activation for multiple execution.
`void`	`clearWarnings()`	Clear the activation's warnings.
`void`	`close()`	Closing an activation marks it as unusable.
`protected void`	`closeActivationAction()`	A generated class can create its own closeActivationAction method to invoke special logic when the activation is closed.
`protected abstract ResultSet`	`createResultSet()`	Create the ResultSet tree for this statement.
`(package private) ResultSet`	`decorateResultSet()`	Create the ResultSet tree for this statement, and possibly perform extra checks or initialization required by specific sub-classes.
`java.lang.Object`	`e0()`
`java.lang.Object`	`e1()`
`java.lang.Object`	`e2()`
`java.lang.Object`	`e3()`
`java.lang.Object`	`e4()`
`java.lang.Object`	`e5()`
`java.lang.Object`	`e6()`
`java.lang.Object`	`e7()`
`java.lang.Object`	`e8()`
`java.lang.Object`	`e9()`
`ResultSet`	`execute()`	When the prepared statement is executed, it passes execution on to the activation execution was requested for.
`int[]`	`getAutoGeneratedKeysColumnIndexes()`	Returns the column positions array of columns requested in auto-generated keys resultset for this avtivation.
`java.lang.String[]`	`getAutoGeneratedKeysColumnNames()`	Returns the column names array of columns requested in auto-generated keys resultset for this avtivation.
`boolean`	`getAutoGeneratedKeysResultsetMode()`	Returns true if auto-generated keys resultset request was made for this avtivation.
`protected java.util.Calendar`	`getCalendar()`	Return a calendar for use by this activation.
`java.lang.String`	`getClassType()`	Get the unique class id for the Dependable.
`protected DataValueDescriptor`	`getColumnFromRow(int rsNumber, int colId)`
`ConstantAction`	`getConstantAction()`	Get the top ConstantAction on the stack without changing the stack.
`ContextManager`	`getContextManager()`	Get the Current ContextManager.
`java.sql.Connection`	`getCurrentConnection()`	Used to get a proxy for the current connection.
`Row`	`getCurrentRow(int resultSetNumber)`	Get the current row at the given index.
`NumberDataValue`	`getCurrentValueAndAdvance(java.lang.String sequenceUUIDstring, int typeFormatID)`	Called by generated code to get the next number in an ANSI/ISO sequence and advance the sequence.
`java.lang.String`	`getCursorName()`	get the cursor name.
`CursorResultSet`	`getCursorResultSet()`	Used in CurrentOfResultSet to get to the cursor result set for a cursor.
`DataValueFactory`	`getDataValueFactory()`	Used by activations to generate data values.
`NumberDataValue`	`getDB2Length(DataValueDescriptor value, int constantLength, NumberDataValue reUse)`	Compute the DB2 compatible length of a value.
`TableDescriptor`	`getDDLTableDescriptor()`	Get the TableDescriptor for the target of DDL.
`DependableFinder`	`getDependableFinder()`	Get an object which can be written to disk and which, when read from disk, will find or reconstruct this in-memory Dependable.
`java.sql.ResultSet[][]`	`getDynamicResults()`	Real implementations of this method are provided by a generated class.
`ExecutionFactory`	`getExecutionFactory()`	Used in activations for generating rows.
`boolean`	`getForCreateTable()`	Get whether or not this activation is for create table.
`CursorResultSet`	`getForUpdateIndexScan()`
`GeneratedClass`	`getGC()`	Get the GeneratedClass object for this object.
`ConglomerateController`	`getHeapConglomerateController()`	Get the ConglomerateController, if any, that has already been opened for the heap when scaning for an update or delete.
`long`	`getIndexConglomerateNumber()`	Get the conglomerate number of the index, if any, that has already been opened for scaning for an update or delete.
`ScanController`	`getIndexScanController()`	Get the ScanController, if any, that has already been opened for the index when scaning for an update or delete.
`LanguageConnectionContext`	`getLanguageConnectionContext()`	Get the language connection factory associated with this connection
`int`	`getMaxDynamicResults()`	Real implementations of this method are provided by a generated class.
`long`	`getMaxRows()`	Get the maximum # of rows. (# of rows that can be returned by a ResultSet. 0 means no limit.)
`GeneratedMethod`	`getMethod(java.lang.String methodName)`
`(package private) static ModuleFactory`	`getMonitor()`	Privileged Monitor lookup.
`int`	`getNumSubqueries()`	Get the number of subqueries in the entire query.
`UUID`	`getObjectID()`	Get the UUID of this Dependable OBJECT.
`java.lang.String`	`getObjectName()`	Get the name of this Dependable OBJECT.
`protected DataValueDescriptor`	`getParameter(int position)`	This method can help reduce the amount of generated code by changing instances of this.pvs.getParameter(position) to this.getParameter(position)
`ParameterValueSet`	`getParameterValueSet()`	return the parameters.
`Activation`	`getParentActivation()`	Get the activation of the calling statement or parent statement.
`java.util.Vector<TemporaryRowHolder>`	`getParentResultSet(java.lang.String resultSetId)`	get the reference to parent table ResultSets, that will be needed by the referential action dependent table scans.
`java.util.Enumeration<java.lang.String>`	`getParentResultSetKeys()`
`ExecPreparedStatement`	`getPreparedStatement()`	Get the prepared statement that this activation is for.
`ResultDescription`	`getResultDescription()`	Get the result description for this activation, if it has one.
`ResultSet`	`getResultSet()`	Returns the current result set for this activation, i.e.
`ResultSetFactory`	`getResultSetFactory()`	Used in the execute method of activations for generating the result sets that they concatenate together.
`boolean`	`getResultSetHoldability()`	Return the holdability of this activation.
`RowLocation`	`getRowLocationTemplate(int itemNumber)`	Get the saved RowLocation.
`boolean`	`getScrollable()`
`protected DataValueDescriptor`	`getSetAutoincrementValue(int columnPosition, long increment)`	Called by generated code to compute the next autoincrement value.
`SQLSessionContext`	`getSQLSessionContextForChildren()`	Return the current SQL session context for all immediately nested connections stemming from the call or function invocation of the statement corresponding to this activation.
`CursorResultSet`	`getTargetResultSet()`	Used in CurrentOfResultSet to get to the target result set for a cursor.
`java.sql.ResultSet`	`getTargetVTI()`	Get the ResultSet for the target of an update/delete to a VTI.
`TransactionController`	`getTransactionController()`	Get the Execution TransactionController associated with this activation/lcc.
`java.sql.SQLWarning`	`getWarnings()`	Returns the chained list of warnings.
`void`	`informOfRowCount(NoPutResultSet resultSet, long currentRowCount)`	Tell this activation that the given ResultSet was found to have the given number of rows.
`void`	`initFromContext(Context context)`	Initialize the generated class from a context.
`boolean`	`isClosed()`	Find out if the activation closed or not.
`boolean`	`isCursorActivation()`	Is this Activation for a cursor?
`boolean`	`isInUse()`	Is the activation in use?
`boolean`	`isPersistent()`	Return whether or not this Dependable is persistent.
`boolean`	`isSingleExecution()`	Returns true if this Activation is only going to be used for one execution.
`boolean`	`isValid()`	Check that all of the dependent's dependencies are valid.
`void`	`makeInvalid(int action, LanguageConnectionContext lcc)`	Mark the dependent as invalid (due to at least one of its dependencies being invalid).
`void`	`markUnused()`	Mark the activation as unused.
`NoPutResultSet`	`materializeResultSetIfPossible(NoPutResultSet rs)`
`protected static void`	`nullToPrimitiveTest(DataValueDescriptor dvd, java.lang.String primitiveType)`
`ConstantAction`	`popConstantAction()`	Pop the ConstantAction stack, returning the element which was just popped off the stack.
`void`	`prepareToInvalidate(Provider p, int action, LanguageConnectionContext lcc)`	Prepare to mark the dependent as invalid (due to at least one of its dependencies being invalid).
`ConstantAction`	`pushConstantAction(ConstantAction newConstantAction)`	Push a ConstantAction to be returned by getConstantAction().
`protected void`	`reinit()`	Reinitialize data structures added by the sub-classes before each execution of the statement.
`static void`	`reinitializeQualifiers(Qualifier[][] qualifiers)`	Reinitialize all Qualifiers in an array of Qualifiers.
`void`	`reset()`	This is a partial implementation of reset.
`void`	`setAutoGeneratedKeysResultsetInfo(int[] columnIndexes, java.lang.String[] columnNames)`	Set the auto-generated keys resultset mode to true for this activation.
`static void`	`setColumnPosition(int[] columnPositions, int positionToSet, int column)`	Set a column position in an array of column positions.
`void`	`setCurrentRow(ExecRow currentRow, int resultSetNumber)`	Remember the row for the specified ResultSet.
`void`	`setCursorName(java.lang.String cursorName)`	remember the cursor name
`void`	`setDDLTableDescriptor(TableDescriptor td)`	Save the TableDescriptor for the target of DDL so that it can be passed between the various ConstantActions during execution.
`void`	`setForCreateTable()`	Mark the Activation as being for create table.
`void`	`setForUpdateIndexScan(CursorResultSet forUpdateIndexScan)`	beetle 3865: updateable cursor using index.
`void`	`setGC(GeneratedClass gc)`	Set the Generated Class.
`void`	`setHeapConglomerateController(ConglomerateController updateHeapCC)`	Set the ConglomerateController to be used for an update or delete.
`void`	`setIndexConglomerateNumber(long indexConglomerateNumber)`	Set the conglomerate number of the index to be used for an update or delete, when scanning an index that will also be updated (Saves opening the ScanController twice.)
`void`	`setIndexScanController(ScanController indexSC)`	Set the ScanController to be used for an update or delete, when scanning an index that will also be updated (Saves opening the ScanController twice.)
`void`	`setMaxRows(long maxRows)`	Set the maximum # of rows. (# of rows that can be returned by a ResultSet. 0 means no limit.)
`void`	`setParameters(ParameterValueSet parameterValues, DataTypeDescriptor[] parameterTypes)`	Sets the parameter values for this execution of the statement.
`protected void`	`setParameterValueSet(int paramCount, boolean hasReturnParam)`
`void`	`setParentActivation(Activation a)`	This activation is created in a dynamic call context or a substatement execution context, make note of its parent statements activation (a).
`void`	`setParentResultSet(TemporaryRowHolder rs, java.lang.String resultSetId)`
`static void`	`setQualifier(Qualifier[][] qualifiers, Qualifier qualifier, int position_1, int position_2)`	Set a Qualifier in a 2 dimensional array of Qualifiers.
`void`	`setResultSetHoldability(boolean resultSetHoldability)`	Set current resultset holdability.
`void`	`setSingleExecution()`	Set this Activation for a single execution.
`void`	`setTargetVTI(java.sql.ResultSet targetVTI)`	Save the ResultSet for the target of an update/delete to a VTI.
`void`	`setupActivation(ExecPreparedStatement ps, boolean scrollable)`	Link this activation with its PreparedStatement.
`SQLSessionContext`	`setupSQLSessionContextForChildren(boolean push)`	Set up and return the current SQL session context for all immediately nested connections stemming from the call or function invocation of the statement corresponding to this activation (push=true) or for a substatement, which shares the parents statement's session context (push=false).
`protected boolean`	`shouldWeCheckRowCounts()`	Find out if it's time to check the row counts of the tables involved in this query.
`void`	`throwIfClosed(java.lang.String op)`	Various activation methods need to disallow their invocation if the activation is closed.
`void`	`throwIfMissingParms()`	Throw an exception if any parameters are uninitialized.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.derby.iapi.services.loader.GeneratedByteCode
postConstructor

- Field Detail
  - lcc
```
private LanguageConnectionContext lcc
```
  - cm
```
protected ContextManager cm
```
  - preStmt
```
protected ExecPreparedStatement preStmt
```
  - resultSet
```
protected ResultSet resultSet
```
  - resultDescription
```
protected ResultDescription resultDescription
```
  - closed
```
protected boolean closed
```
  - cursorName
```
private java.lang.String cursorName
```
  - numSubqueries
```
protected int numSubqueries
```
  - singleExecution
```
private boolean singleExecution
```
  - inUse
```
private volatile boolean inUse
```
  - targetVTI
```
private java.sql.ResultSet targetVTI
```
  - warnings
```
private java.sql.SQLWarning warnings
```
  - gc
```
private GeneratedClass gc
```
  - checkRowCounts
```
private boolean checkRowCounts
```
  - rowCountsCheckedThisExecution
```
private java.util.HashSet<java.lang.Integer> rowCountsCheckedThisExecution
```
  - MAX_SQRT
```
private static final long MAX_SQRT
```
  - TEN_PERCENT_THRESHOLD
```
private static final int TEN_PERCENT_THRESHOLD
```
    See Also:
    
    Constant Field Values
  - updateHeapCC
```
private ConglomerateController updateHeapCC
```
  - indexSC
```
private ScanController indexSC
```
  - indexConglomerateNumber
```
private long indexConglomerateNumber
```
  - ddlTableDescriptor
```
private TableDescriptor ddlTableDescriptor
```
  - maxRows
```
private long maxRows
```
  - forCreateTable
```
private boolean forCreateTable
```
  - scrollable
```
private boolean scrollable
```
  - resultSetHoldability
```
private boolean resultSetHoldability
```
  - forUpdateIndexScan
```
private CursorResultSet forUpdateIndexScan
```
  - autoGeneratedKeysResultSetMode
```
private boolean autoGeneratedKeysResultSetMode
```
  - autoGeneratedKeysColumnIndexes
```
private int[] autoGeneratedKeysColumnIndexes
```
  - autoGeneratedKeysColumnNames
```
private java.lang.String[] autoGeneratedKeysColumnNames
```
  - isValid
```
private boolean isValid
```
    By setting isValid to false, we can force a new activation to be used even if the prepared statement is still valid. This is used when modifying the current role for a session, which may (if the statement relies on privileges obtained via the current role) require rechecking of privileges. The checking normally only happens the first time the prepared statement is used in a session, when the activation is constructed. Forcing creation of a new activation achieves the purpose of getting the check performed over again and is cheaper than invalidating the prepared statement itself. Also, the latter would impact other sessions, forcing them to recreate their activations.
  - UUIDString
```
protected java.lang.String UUIDString
```
    For dependency tracking
  - UUIDValue
```
protected UUID UUIDValue
```
    For dependency tracking
  - parentActivation
```
private Activation parentActivation
```
    The 'parentActivation' of an activation of a statement executing in the root connection is null. A non-null 'parentActivation' represents the activation of the calling statement (if we are in a nested connection of a stored routine), or the activation of the parent statement (if we are executing a sub-statement) 'parentActivation' is set when this activation is created (@see PreparedStatement#getActivation) based on the top of the dynamic call stack of execution, which is tracked by StatementContext. The nested SQL session context is initialized by code generated for the call, after parameters are evaluated or just sub-statement execution starts.
    
    See Also:
    
    StaticMethodCallNode.generatePushNestedSessionContext(org.apache.derby.impl.sql.compile.ActivationClassBuilder, org.apache.derby.iapi.services.compiler.MethodBuilder, boolean, java.lang.String), PreparedStatement.executeSubStatement(org.apache.derby.iapi.sql.Activation, org.apache.derby.iapi.sql.Activation, boolean, long)
  - sqlSessionContextForChildren
```
private SQLSessionContext sqlSessionContextForChildren
```
    The SQL session context to be used inside a nested connection in a stored routine or in a substatement. In the latter case, it is an alias to the superstatement's session context.
  - constantActionStack
```
private java.util.Stack<ConstantAction> constantActionStack
```
    Stack of ConstantActions.
  - indexOfSessionTableNamesInSavedObjects
```
protected int indexOfSessionTableNamesInSavedObjects
```
  - row
```
protected ExecRow[] row
```
  - pvs
```
protected ParameterValueSet pvs
```
  - raParentResultSets
```
protected CursorResultSet[] raParentResultSets
```
  - parentResultSets
```
protected java.util.Hashtable<java.lang.String,java.util.Vector<TemporaryRowHolder>> parentResultSets
```
  - cal
```
private java.util.Calendar cal
```
- Constructor Detail
  - BaseActivation
```
protected BaseActivation()
```
- Method Detail
  - initFromContext
```
public final void initFromContext(Context context)
                           throws StandardException
```
    Description copied from interface: GeneratedByteCode
    
    Initialize the generated class from a context. Called by the class manager just after creating the instance of the new class.
    
    Specified by:
    
    initFromContext in interface GeneratedByteCode
    
    Throws:
    
    StandardException
  - execute
```
public final ResultSet execute()
                        throws StandardException
```
    Description copied from interface: Activation
    
    When the prepared statement is executed, it passes execution on to the activation execution was requested for.
    
    Specified by:
    
    execute in interface Activation
    
    Returns:
    
    the ResultSet for further manipulation, if any.
    
    Throws:
    
    StandardException - Thrown on failure
  - decorateResultSet
```
ResultSet decorateResultSet()
                     throws StandardException
```
    Create the ResultSet tree for this statement, and possibly perform extra checks or initialization required by specific sub-classes.
    
    Returns:
    
    the root of the ResultSet tree for this statement
    
    Throws:
    
    StandardException
  - createResultSet
```
protected abstract ResultSet createResultSet()
                                      throws StandardException
```
    Create the ResultSet tree for this statement.
    
    Returns:
    
    the root of the ResultSet tree for this statement
    
    Throws:
    
    StandardException - standard error policy
  - reinit
```
protected void reinit()
               throws StandardException
```
    Reinitialize data structures added by the sub-classes before each execution of the statement. The default implementation does nothing. Sub-classes should override this method if they need to perform operations before each execution.
    
    Throws:
    
    StandardException
  - getPreparedStatement
```
public final ExecPreparedStatement getPreparedStatement()
```
    Description copied from interface: Activation
    
    Get the prepared statement that this activation is for.
    
    Specified by:
    
    getPreparedStatement in interface Activation
    
    Returns:
    
    the prepared statement this activation is for.
  - pushConstantAction
```
public ConstantAction pushConstantAction(ConstantAction newConstantAction)
```
    Description copied from interface: Activation
    
    Push a ConstantAction to be returned by getConstantAction(). Returns the newConstantAction.
    
    Specified by:
    
    pushConstantAction in interface Activation
  - popConstantAction
```
public ConstantAction popConstantAction()
```
    Description copied from interface: Activation
    
    Pop the ConstantAction stack, returning the element which was just popped off the stack.
    
    Specified by:
    
    popConstantAction in interface Activation
  - getConstantAction
```
public ConstantAction getConstantAction()
```
    Description copied from interface: Activation
    
    Get the top ConstantAction on the stack without changing the stack.
    
    Specified by:
    
    getConstantAction in interface Activation
  - checkStatementValidity
```
public final void checkStatementValidity()
                                  throws StandardException
```
    Description copied from interface: Activation
    
    Check the validity of the current executing statement. Needs to be called after a statement has obtained the relevant table locks on the
    
    Specified by:
    
    checkStatementValidity in interface Activation
    
    Throws:
    
    StandardException
  - setupActivation
```
public final void setupActivation(ExecPreparedStatement ps,
                                  boolean scrollable)
                           throws StandardException
```
    Link this activation with its PreparedStatement. It can be called with null to break the link with the PreparedStatement.
    
    Parameters:
    
    ps - prepared statement
    
    scrollable - activation for a scrollable result set
    
    Throws:
    
    StandardException - standard error policy
  - getResultSet
```
public ResultSet getResultSet()
```
    Description copied from interface: Activation
    
    Returns the current result set for this activation, i.e. the one returned by the last execute() call. If there has been no execute call or the activation has been reset or closed, a null is returned.
    
    Specified by:
    
    getResultSet in interface Activation
    
    Returns:
    
    the current ResultSet of this activation.
  - getRowLocationTemplate
```
public RowLocation getRowLocationTemplate(int itemNumber)
```
    Get the saved RowLocation.
    
    Specified by:
    
    getRowLocationTemplate in interface Activation
    
    Parameters:
    
    itemNumber - The saved item number.
    
    Returns:
    
    A RowLocation template for the conglomerate
  - getResultDescription
```
public ResultDescription getResultDescription()
```
    Description copied from interface: Activation
    
    Get the result description for this activation, if it has one.
    
    Specified by:
    
    getResultDescription in interface Activation
    
    Returns:
    
    result description for this activation, if it has one; otherwise, null.
  - reset
```
public void reset()
           throws StandardException
```
    This is a partial implementation of reset. Subclasses will want to reset information they are aware of, such as parameters.
    All subclasses must call super.reset() and then do their cleanup.
    The execute call must set the resultSet field to be the resultSet that it has returned.
    
    Specified by:
    
    reset in interface Activation
    
    Throws:
    
    StandardException - on error
  - close
```
public final void close()
                 throws StandardException
```
    Closing an activation marks it as unusable. Any other requests made on it will fail. An activation should be marked closed when it is expected to not be used any longer, i.e. when the connection for it is closed, or it has suffered some sort of severe error. This should also remove it from the language connection context.
    
    Specified by:
    
    close in interface Activation
    
    Throws:
    
    StandardException - on error
  - closeActivationAction
```
protected void closeActivationAction()
                              throws java.lang.Exception
```
    A generated class can create its own closeActivationAction method to invoke special logic when the activation is closed.
    
    Throws:
    
    java.lang.Exception - error
  - isClosed
```
public boolean isClosed()
```
    Find out if the activation closed or not.
    
    Specified by:
    
    isClosed in interface Activation
    
    Returns:
    
    true if the prepared statement has been closed.
  - setSingleExecution
```
public void setSingleExecution()
```
    Set this Activation for a single execution.
    
    Specified by:
    
    setSingleExecution in interface Activation
    
    See Also:
    
    Activation.setSingleExecution()
  - isSingleExecution
```
public boolean isSingleExecution()
```
    Returns true if this Activation is only going to be used for one execution.
    
    Specified by:
    
    isSingleExecution in interface Activation
    
    See Also:
    
    Activation.isSingleExecution()
  - getNumSubqueries
```
public int getNumSubqueries()
```
    Get the number of subqueries in the entire query.
    
    Specified by:
    
    getNumSubqueries in interface Activation
    
    Returns:
    
    int The number of subqueries in the entire query.
  - isCursorActivation
```
public boolean isCursorActivation()
```
    Description copied from interface: Activation
    
    Is this Activation for a cursor?
    
    Specified by:
    
    isCursorActivation in interface Activation
    
    Returns:
    
    Whether or not this Activation is for a cursor.
    
    See Also:
    
    Activation.isCursorActivation()
  - setGC
```
public final void setGC(GeneratedClass gc)
```
    Description copied from interface: GeneratedByteCode
    
    Set the Generated Class. Call by the class manager just after calling initFromContext.
    
    Specified by:
    
    setGC in interface GeneratedByteCode
  - getGC
```
public final GeneratedClass getGC()
```
    Description copied from interface: GeneratedByteCode
    
    Get the GeneratedClass object for this object.
    
    Specified by:
    
    getGC in interface GeneratedByteCode
  - getMethod
```
public final GeneratedMethod getMethod(java.lang.String methodName)
                                throws StandardException
```
    Specified by:
    
    getMethod in interface GeneratedByteCode
    
    Throws:
    
    StandardException
  - e0
```
public java.lang.Object e0()
                    throws StandardException
```
    Specified by:
    
    e0 in interface GeneratedByteCode
    
    Throws:
    
    StandardException
  - e1
```
public java.lang.Object e1()
                    throws StandardException
```
    Specified by:
    
    e1 in interface GeneratedByteCode
    
    Throws:
    
    StandardException
  - e2
```
public java.lang.Object e2()
                    throws StandardException
```
    Specified by:
    
    e2 in interface GeneratedByteCode
    
    Throws:
    
    StandardException
  - e3
```
public java.lang.Object e3()
                    throws StandardException
```
    Specified by:
    
    e3 in interface GeneratedByteCode
    
    Throws:
    
    StandardException
  - e4
```
public java.lang.Object e4()
                    throws StandardException
```
    Specified by:
    
    e4 in interface GeneratedByteCode
    
    Throws:
    
    StandardException
  - e5
```
public java.lang.Object e5()
                    throws StandardException
```
    Specified by:
    
    e5 in interface GeneratedByteCode
    
    Throws:
    
    StandardException
  - e6
```
public java.lang.Object e6()
                    throws StandardException
```
    Specified by:
    
    e6 in interface GeneratedByteCode
    
    Throws:
    
    StandardException
  - e7
```
public java.lang.Object e7()
                    throws StandardException
```
    Specified by:
    
    e7 in interface GeneratedByteCode
    
    Throws:
    
    StandardException
  - e8
```
public java.lang.Object e8()
                    throws StandardException
```
    Specified by:
    
    e8 in interface GeneratedByteCode
    
    Throws:
    
    StandardException
  - e9
```
public java.lang.Object e9()
                    throws StandardException
```
    Specified by:
    
    e9 in interface GeneratedByteCode
    
    Throws:
    
    StandardException
  - checkIfThisActivationHasHoldCursor
```
public boolean checkIfThisActivationHasHoldCursor(java.lang.String tableName)
```
    Temporary tables can be declared with ON COMMIT DELETE ROWS. But if the table has a held curosr open at commit time, data should not be deleted from the table. This method, (gets called at commit time) checks if this activation held cursor and if so, does that cursor reference the passed temp table name.
    
    Specified by:
    
    checkIfThisActivationHasHoldCursor in interface Activation
    
    Returns:
    
    true if this activation has held cursor and if it references the passed temp table name
  - setCursorName
```
public void setCursorName(java.lang.String cursorName)
```
    remember the cursor name
    
    Specified by:
    
    setCursorName in interface Activation
    
    Parameters:
    
    cursorName - The cursor name to use.
  - getCursorName
```
public java.lang.String getCursorName()
```
    get the cursor name. For something that isn't a cursor, this is used as a string name of the result set for messages from things like the dependency manager.
    Activations that do support cursors will override this.
    
    Specified by:
    
    getCursorName in interface Activation
    
    Returns:
    
    The cursor name.
  - setResultSetHoldability
```
public void setResultSetHoldability(boolean resultSetHoldability)
```
    Description copied from interface: Activation
    
    Set current resultset holdability.
    
    Specified by:
    
    setResultSetHoldability in interface Activation
    
    Parameters:
    
    resultSetHoldability - The new resultset holdability.
  - getResultSetHoldability
```
public boolean getResultSetHoldability()
```
    Description copied from interface: Activation
    
    Return the holdability of this activation.
    
    Specified by:
    
    getResultSetHoldability in interface Activation
    
    Returns:
    
    The holdability of this activation.
  - setAutoGeneratedKeysResultsetInfo
```
public void setAutoGeneratedKeysResultsetInfo(int[] columnIndexes,
                                              java.lang.String[] columnNames)
```
    Description copied from interface: Activation
    
    Set the auto-generated keys resultset mode to true for this activation. The specific columns for auto-generated keys resultset can be requested by passing column positions array The specific columns for auto-generated keys resultset can be requested by passing column names array Both the parameters would be null if user didn't request specific keys. Otherwise, the user could request specific columns by passing column positions or names array but not both.
    
    Specified by:
    
    setAutoGeneratedKeysResultsetInfo in interface Activation
    
    Parameters:
    
    columnIndexes - Request specific columns in auto-generated keys resultset by passing column positions. null means no specific columns requested by position
    
    columnNames - Request specific columns in auto-generated keys resultset by passing column names. null means no specific columns requested by position
    
    See Also:
    
    Activation.setAutoGeneratedKeysResultsetInfo(int[], java.lang.String[])
  - getAutoGeneratedKeysResultsetMode
```
public boolean getAutoGeneratedKeysResultsetMode()
```
    Description copied from interface: Activation
    
    Returns true if auto-generated keys resultset request was made for this avtivation.
    
    Specified by:
    
    getAutoGeneratedKeysResultsetMode in interface Activation
    
    Returns:
    
    auto-generated keys resultset mode for this activation.
    
    See Also:
    
    Activation.getAutoGeneratedKeysResultsetMode()
  - getAutoGeneratedKeysColumnIndexes
```
public int[] getAutoGeneratedKeysColumnIndexes()
```
    Description copied from interface: Activation
    
    Returns the column positions array of columns requested in auto-generated keys resultset for this avtivation. Returns null if no specific column requested by positions
    
    Specified by:
    
    getAutoGeneratedKeysColumnIndexes in interface Activation
    
    Returns:
    
    column positions array of columns requested.
    
    See Also:
    
    Activation.getAutoGeneratedKeysColumnIndexes()
  - getAutoGeneratedKeysColumnNames
```
public java.lang.String[] getAutoGeneratedKeysColumnNames()
```
    Description copied from interface: Activation
    
    Returns the column names array of columns requested in auto-generated keys resultset for this avtivation. Returns null if no specific column requested by names
    
    Specified by:
    
    getAutoGeneratedKeysColumnNames in interface Activation
    
    Returns:
    
    column names array of columns requested.
    
    See Also:
    
    Activation.getAutoGeneratedKeysColumnNames()
  - getResultSetFactory
```
public final ResultSetFactory getResultSetFactory()
```
    Used in the execute method of activations for generating the result sets that they concatenate together.
  - getExecutionFactory
```
public final ExecutionFactory getExecutionFactory()
```
    Used in activations for generating rows.
    
    Specified by:
    
    getExecutionFactory in interface Activation
    
    Returns:
    
    ExecutionFactory
  - getTargetResultSet
```
public CursorResultSet getTargetResultSet()
```
    Used in CurrentOfResultSet to get to the target result set for a cursor. Overridden by activations generated for updatable cursors. Those activations capture the target result set in a field in their execute() method, and then return the value of that field in their version of this method.
    
    Specified by:
    
    getTargetResultSet in interface CursorActivation
    
    Returns:
    
    null.
  - getSetAutoincrementValue
```
protected DataValueDescriptor getSetAutoincrementValue(int columnPosition,
                                                       long increment)
                                                throws StandardException
```
    Called by generated code to compute the next autoincrement value.
    
    Returns:
    
    The next autoincrement value which should be inserted. returns the correct number datatype.
    
    Throws:
    
    StandardException
  - getCurrentValueAndAdvance
```
public NumberDataValue getCurrentValueAndAdvance(java.lang.String sequenceUUIDstring,
                                                 int typeFormatID)
                                          throws StandardException
```
    Called by generated code to get the next number in an ANSI/ISO sequence and advance the sequence. Raises an exception if the sequence was declared NO CYCLE and its range is exhausted.
    
    Specified by:
    
    getCurrentValueAndAdvance in interface Activation
    
    Parameters:
    
    sequenceUUIDstring - The string value of the sequence's UUID
    
    typeFormatID - The format id of the data type to be returned. E.g., StoredFormatIds.SQL_INTEGER_ID.
    
    Returns:
    
    The next number in the sequence
    
    Throws:
    
    StandardException
  - getCursorResultSet
```
public CursorResultSet getCursorResultSet()
```
    Used in CurrentOfResultSet to get to the cursor result set for a cursor. Overridden by activations generated for updatable cursors. Those activations capture the cursor result set in a field in their execute() method, and then return the value of that field in their version of this method.
    
    Specified by:
    
    getCursorResultSet in interface CursorActivation
    
    Returns:
    
    null
  - throwIfClosed
```
public void throwIfClosed(java.lang.String op)
                   throws StandardException
```
    Various activation methods need to disallow their invocation if the activation is closed. This lets them check and throw without generating alot of code.
    The code to write to generate the call to this is approximately: // jf is a JavaFactory CallableExpression ce = jf.newMethodCall( jf.thisExpression(), BaseActivation.CLASS_NAME, "throwIfClosed", "void", acb.exprArray(jf.newStringLiteral(...some literal here...))); //mb is a MethodBuilder mb.addStatement(jf.newStatement(ce)); The java code to write to call this is: this.throwIfClosed(...some literal here...); In both cases, "...some literal here..." gets replaced with an expression of type String that evaluates to the name of the operation that is being checked, like "execute" or "reset".
    
    Throws:
    
    StandardException - thrown if closed
  - setColumnPosition
```
public static void setColumnPosition(int[] columnPositions,
                                     int positionToSet,
                                     int column)
```
    Set a column position in an array of column positions.
    
    Parameters:
    
    columnPositions - The array of column positions
    
    positionToSet - The place to put the column position
    
    column - The column position
  - allocateQualArray
```
public static void allocateQualArray(Qualifier[][] qualifiers,
                                     int position,
                                     int length)
```
    Allocate an array of qualifiers and initialize in Qualifier[][]
    
    Parameters:
    
    qualifiers - The array of Qualifier arrays.
    
    position - The position in the array to set
    
    length - The array length of the qualifier array to allocate.
  - setQualifier
```
public static void setQualifier(Qualifier[][] qualifiers,
                                Qualifier qualifier,
                                int position_1,
                                int position_2)
```
    Set a Qualifier in a 2 dimensional array of Qualifiers. Set a single Qualifier into one slot of a 2 dimensional array of Qualifiers. @see Qualifier for detailed description of layout of the 2-d array.
    
    Parameters:
    
    qualifiers - The array of Qualifiers
    
    qualifier - The Qualifier
    
    position_1 - The Nth array index into qualifiers[N][M]
    
    position_2 - The Nth array index into qualifiers[N][M]
  - reinitializeQualifiers
```
public static void reinitializeQualifiers(Qualifier[][] qualifiers)
```
    Reinitialize all Qualifiers in an array of Qualifiers.
    
    Parameters:
    
    qualifiers - The array of Qualifiers
  - markUnused
```
public final void markUnused()
```
    Mark the activation as unused.
    
    Specified by:
    
    markUnused in interface Activation
  - isInUse
```
public final boolean isInUse()
```
    Is the activation in use?
    
    Specified by:
    
    isInUse in interface Activation
    
    Returns:
    
    true/false
  - addWarning
```
public void addWarning(java.sql.SQLWarning w)
```
    Description copied from interface: Activation
    
    Add a warning to the activation
    
    Specified by:
    
    addWarning in interface Activation
    
    See Also:
    
    Activation.addWarning(java.sql.SQLWarning)
  - getWarnings
```
public java.sql.SQLWarning getWarnings()
```
    Description copied from interface: Activation
    
    Returns the chained list of warnings. Returns null if there are no warnings.
    
    Specified by:
    
    getWarnings in interface Activation
    
    See Also:
    
    Activation.getWarnings()
  - clearWarnings
```
public void clearWarnings()
```
    Description copied from interface: Activation
    
    Clear the activation's warnings.
    
    Specified by:
    
    clearWarnings in interface Activation
    
    See Also:
    
    Activation.clearWarnings()
  - nullToPrimitiveTest
```
protected static void nullToPrimitiveTest(DataValueDescriptor dvd,
                                          java.lang.String primitiveType)
                                   throws StandardException
```
    Throws:
    
    StandardException - on error
  - informOfRowCount
```
public void informOfRowCount(NoPutResultSet resultSet,
                             long currentRowCount)
                      throws StandardException
```
    Description copied from interface: Activation
    
    Tell this activation that the given ResultSet was found to have the given number of rows. This is used during execution to determine whether a table has grown or shrunk. If a table's size changes significantly, the activation may invalidate its PreparedStatement to force recompilation. Note that the association of row counts with ResultSets is kept in the activation class, not in the activation itself. This means that this method must be synchronized. This method is not required to check the number of rows on each call. Because of synchronization, this check is likely to be expensive, so it may only check every hundred calls or so.
    
    Specified by:
    
    informOfRowCount in interface Activation
    
    Throws:
    
    StandardException - Thrown on error
    
    See Also:
    
    Activation.informOfRowCount(org.apache.derby.iapi.sql.execute.NoPutResultSet, long)
  - getHeapConglomerateController
```
public ConglomerateController getHeapConglomerateController()
```
    Description copied from interface: Activation
    
    Get the ConglomerateController, if any, that has already been opened for the heap when scaning for an update or delete. (Saves opening the ConglomerateController twice.)
    
    Specified by:
    
    getHeapConglomerateController in interface Activation
    
    Returns:
    
    The ConglomerateController, if available, to use for the update.
    
    See Also:
    
    Activation.getHeapConglomerateController()
  - setHeapConglomerateController
```
public void setHeapConglomerateController(ConglomerateController updateHeapCC)
```
    Description copied from interface: Activation
    
    Set the ConglomerateController to be used for an update or delete. (Saves opening the ConglomerateController twice.)
    
    Specified by:
    
    setHeapConglomerateController in interface Activation
    
    Parameters:
    
    updateHeapCC - The ConglomerateController to reuse for the update or delete.
    
    See Also:
    
    Activation.setHeapConglomerateController(org.apache.derby.iapi.store.access.ConglomerateController)
  - clearHeapConglomerateController
```
public void clearHeapConglomerateController()
```
    Description copied from interface: Activation
    
    Clear the ConglomerateController to be used for an update or delete. (Saves opening the ConglomerateController twice.)
    
    Specified by:
    
    clearHeapConglomerateController in interface Activation
    
    See Also:
    
    Activation.clearHeapConglomerateController()
  - getIndexScanController
```
public ScanController getIndexScanController()
```
    Description copied from interface: Activation
    
    Get the ScanController, if any, that has already been opened for the index when scaning for an update or delete. (Saves opening the ScanController twice.)
    
    Specified by:
    
    getIndexScanController in interface Activation
    
    Returns:
    
    The ScanController, if available, to use for the update.
    
    See Also:
    
    Activation.getIndexScanController()
  - setIndexScanController
```
public void setIndexScanController(ScanController indexSC)
```
    Description copied from interface: Activation
    
    Set the ScanController to be used for an update or delete, when scanning an index that will also be updated (Saves opening the ScanController twice.)
    
    Specified by:
    
    setIndexScanController in interface Activation
    
    Parameters:
    
    indexSC - The ScanController to reuse for the update or delete.
    
    See Also:
    
    Activation.setIndexScanController(org.apache.derby.iapi.store.access.ScanController)
  - getIndexConglomerateNumber
```
public long getIndexConglomerateNumber()
```
    Description copied from interface: Activation
    
    Get the conglomerate number of the index, if any, that has already been opened for scaning for an update or delete. (Saves opening the ScanController twice.)
    
    Specified by:
    
    getIndexConglomerateNumber in interface Activation
    
    Returns:
    
    The conglomerate number, if available, to use for the update.
    
    See Also:
    
    Activation.getIndexConglomerateNumber()
  - setIndexConglomerateNumber
```
public void setIndexConglomerateNumber(long indexConglomerateNumber)
```
    Description copied from interface: Activation
    
    Set the conglomerate number of the index to be used for an update or delete, when scanning an index that will also be updated (Saves opening the ScanController twice.)
    
    Specified by:
    
    setIndexConglomerateNumber in interface Activation
    
    Parameters:
    
    indexConglomerateNumber - The conglomerate number of the index to reuse for the update or delete.
    
    See Also:
    
    Activation.setIndexConglomerateNumber(long)
  - clearIndexScanInfo
```
public void clearIndexScanInfo()
```
    Description copied from interface: Activation
    
    Clear the info for the index to be re-used for update/delete. (ScanController and conglomerate number.)
    
    Specified by:
    
    clearIndexScanInfo in interface Activation
    
    See Also:
    
    Activation.clearIndexScanInfo()
  - setForCreateTable
```
public void setForCreateTable()
```
    Description copied from interface: Activation
    
    Mark the Activation as being for create table. (NOTE: We can do certain optimizations for create table that we can't do for other DDL.)
    
    Specified by:
    
    setForCreateTable in interface Activation
    
    See Also:
    
    Activation.setForCreateTable()
  - getForCreateTable
```
public boolean getForCreateTable()
```
    Description copied from interface: Activation
    
    Get whether or not this activation is for create table. (NOTE: We can do certain optimizations for create table that we can't do for other DDL.)
    
    Specified by:
    
    getForCreateTable in interface Activation
    
    Returns:
    
    Whether or not this activation is for create table.
    
    See Also:
    
    Activation.getForCreateTable()
  - setDDLTableDescriptor
```
public void setDDLTableDescriptor(TableDescriptor td)
```
    Description copied from interface: Activation
    
    Save the TableDescriptor for the target of DDL so that it can be passed between the various ConstantActions during execution.
    
    Specified by:
    
    setDDLTableDescriptor in interface Activation
    
    See Also:
    
    Activation.setDDLTableDescriptor(org.apache.derby.iapi.sql.dictionary.TableDescriptor)
  - getDDLTableDescriptor
```
public TableDescriptor getDDLTableDescriptor()
```
    Description copied from interface: Activation
    
    Get the TableDescriptor for the target of DDL.
    
    Specified by:
    
    getDDLTableDescriptor in interface Activation
    
    Returns:
    
    The TableDescriptor for the target of DDL.
    
    See Also:
    
    Activation.getDDLTableDescriptor()
  - setMaxRows
```
public void setMaxRows(long maxRows)
```
    Description copied from interface: Activation
    
    Set the maximum # of rows. (# of rows that can be returned by a ResultSet. 0 means no limit.)
    
    Specified by:
    
    setMaxRows in interface Activation
    
    Parameters:
    
    maxRows - Maximum # of rows. (0 means no limit.)
    
    See Also:
    
    Activation.setMaxRows(long)
  - getMaxRows
```
public long getMaxRows()
```
    Description copied from interface: Activation
    
    Get the maximum # of rows. (# of rows that can be returned by a ResultSet. 0 means no limit.)
    
    Specified by:
    
    getMaxRows in interface Activation
    
    Returns:
    
    Maximum # of rows. (0 means no limit.)
    
    See Also:
    
    Activation.getMaxRows()
  - setTargetVTI
```
public void setTargetVTI(java.sql.ResultSet targetVTI)
```
    Description copied from interface: Activation
    
    Save the ResultSet for the target of an update/delete to a VTI.
    
    Specified by:
    
    setTargetVTI in interface Activation
  - getTargetVTI
```
public java.sql.ResultSet getTargetVTI()
```
    Description copied from interface: Activation
    
    Get the ResultSet for the target of an update/delete to a VTI.
    
    Specified by:
    
    getTargetVTI in interface Activation
    
    Returns:
    
    The ResultSet for the target of an update/delete to a VTI.
  - shouldWeCheckRowCounts
```
protected boolean shouldWeCheckRowCounts()
                                  throws StandardException
```
    Find out if it's time to check the row counts of the tables involved in this query.
    
    Returns:
    
    true if the row counts should be checked, false otherwise
    
    Throws:
    
    StandardException
  - getScrollable
```
public final boolean getScrollable()
```
  - setParameterValueSet
```
protected final void setParameterValueSet(int paramCount,
                                          boolean hasReturnParam)
```
  - getParameter
```
protected final DataValueDescriptor getParameter(int position)
                                          throws StandardException
```
    This method can help reduce the amount of generated code by changing instances of this.pvs.getParameter(position) to this.getParameter(position)
    
    Parameters:
    
    position -
    
    Throws:
    
    StandardException
  - getParameterValueSet
```
public ParameterValueSet getParameterValueSet()
```
    return the parameters.
    
    Specified by:
    
    getParameterValueSet in interface Activation
    
    Returns:
    
    The ParameterValueSet for this execution of the statement. Returns NULL if there are no parameters.
  - setParameters
```
public void setParameters(ParameterValueSet parameterValues,
                          DataTypeDescriptor[] parameterTypes)
                   throws StandardException
```
    Description copied from interface: Activation
    
    Sets the parameter values for this execution of the statement.
    Has no effect if the activation has been closed.
    NOTE: The setParameters() method is currently unimplemented. A statement with parameters will generate its own ParameterValueSet, which can be gotten with the getParameterValueSet() method (above). The idea behind setParameters() is to improve performance when operating across a network by allowing all the parameters to be set in one call, as opposed to one call per parameter.
    
    Specified by:
    
    setParameters in interface Activation
    
    Parameters:
    
    parameterValues - The values of the parameters.
    
    Throws:
    
    StandardException
  - throwIfMissingParms
```
public void throwIfMissingParms()
                         throws StandardException
```
    Throw an exception if any parameters are uninitialized.
    
    Throws:
    
    StandardException - Thrown if any parameters are unitialized
  - setCurrentRow
```
public void setCurrentRow(ExecRow currentRow,
                          int resultSetNumber)
```
    Remember the row for the specified ResultSet.
    
    Specified by:
    
    setCurrentRow in interface Activation
    
    Parameters:
    
    currentRow - The row to be operated upon.
    
    resultSetNumber - The resultSetNumber for the current ResultSet
  - clearCurrentRow
```
public void clearCurrentRow(int resultSetNumber)
```
    Clear the current row for the specified ResultSet.
    
    Specified by:
    
    clearCurrentRow in interface Activation
    
    Parameters:
    
    resultSetNumber - The resultSetNumber for the current ResultSet
  - getCurrentRow
```
public Row getCurrentRow(int resultSetNumber)
```
    Get the current row at the given index.
    
    Specified by:
    
    getCurrentRow in interface Activation
  - getSQLSessionContextForChildren
```
public SQLSessionContext getSQLSessionContextForChildren()
```
    Return the current SQL session context for all immediately nested connections stemming from the call or function invocation of the statement corresponding to this activation.
    Substatements (e.g. used in rs.updateRow), inherit the SQL session context via its parent activation.
    
    Specified by:
    
    getSQLSessionContextForChildren in interface Activation
    
    See Also:
    
    Activation.getSQLSessionContextForChildren()
  - setupSQLSessionContextForChildren
```
public SQLSessionContext setupSQLSessionContextForChildren(boolean push)
```
    Description copied from interface: Activation
    
    Set up and return the current SQL session context for all immediately nested connections stemming from the call or function invocation of the statement corresponding to this activation (push=true) or for a substatement, which shares the parents statement's session context (push=false).
    
    Specified by:
    
    setupSQLSessionContextForChildren in interface Activation
    
    Parameters:
    
    push - true if used to push a new connection context
    
    See Also:
    
    Activation.setupSQLSessionContextForChildren(boolean)
  - setParentActivation
```
public void setParentActivation(Activation a)
```
    This activation is created in a dynamic call context or a substatement execution context, make note of its parent statements activation (a).
    
    Specified by:
    
    setParentActivation in interface Activation
    
    Parameters:
    
    a - The caller's or superstatement's activation
  - getParentActivation
```
public Activation getParentActivation()
```
    Get the activation of the calling statement or parent statement.
    
    Specified by:
    
    getParentActivation in interface Activation
    
    Returns:
    
    The parent's activation
  - getColumnFromRow
```
protected final DataValueDescriptor getColumnFromRow(int rsNumber,
                                                     int colId)
                                              throws StandardException
```
    Throws:
    
    StandardException
  - checkPositionedStatement
```
protected void checkPositionedStatement(java.lang.String cursorName,
                                        java.lang.String psName)
                                 throws StandardException
```
    Check that a positioned statement is executing against a cursor from the same PreparedStatement (plan) that the positioned statement was original compiled against. Only called from generated code for positioned UPDATE and DELETE statements. See CurrentOfNode.
    
    Parameters:
    
    cursorName - Name of the cursor
    
    psName - Object name of the PreparedStatement.
    
    Throws:
    
    StandardException
  - materializeResultSetIfPossible
```
public NoPutResultSet materializeResultSetIfPossible(NoPutResultSet rs)
                                              throws StandardException
```
    Throws:
    
    StandardException
  - setParentResultSet
```
public void setParentResultSet(TemporaryRowHolder rs,
                               java.lang.String resultSetId)
```
    Specified by:
    
    setParentResultSet in interface Activation
  - getParentResultSet
```
public java.util.Vector<TemporaryRowHolder> getParentResultSet(java.lang.String resultSetId)
```
    get the reference to parent table ResultSets, that will be needed by the referential action dependent table scans.
    
    Specified by:
    
    getParentResultSet in interface Activation
  - getParentResultSetKeys
```
public java.util.Enumeration<java.lang.String> getParentResultSetKeys()
```
    Specified by:
    
    getParentResultSetKeys in interface Activation
  - clearParentResultSets
```
public void clearParentResultSets()
```
    prepared statement use the same activation for multiple execution. For each excution we create new set of temporary resultsets, we should clear this hash table. otherwise we will refer to the released resources.
    
    Specified by:
    
    clearParentResultSets in interface Activation
  - setForUpdateIndexScan
```
public void setForUpdateIndexScan(CursorResultSet forUpdateIndexScan)
```
    beetle 3865: updateable cursor using index. A way of communication between cursor activation and update activation.
    
    Specified by:
    
    setForUpdateIndexScan in interface Activation
  - getForUpdateIndexScan
```
public CursorResultSet getForUpdateIndexScan()
```
    Specified by:
    
    getForUpdateIndexScan in interface Activation
  - getCalendar
```
protected java.util.Calendar getCalendar()
```
    Return a calendar for use by this activation. Calendar objects are not thread safe, the one returned is purely for use by this activation and it is assumed that is it single threded through the single active thread in a connection model.
  - getLanguageConnectionContext
```
public final LanguageConnectionContext getLanguageConnectionContext()
```
    Get the language connection factory associated with this connection
    
    Specified by:
    
    getLanguageConnectionContext in interface Activation
  - getTransactionController
```
public final TransactionController getTransactionController()
```
    Description copied from interface: Activation
    
    Get the Execution TransactionController associated with this activation/lcc.
    
    Specified by:
    
    getTransactionController in interface Activation
  - getContextManager
```
public ContextManager getContextManager()
```
    Get the Current ContextManager.
    
    Returns:
    
    Current ContextManager
  - getDataValueFactory
```
public DataValueFactory getDataValueFactory()
```
    Used by activations to generate data values. Most DML statements will use this method. Possibly some DDL statements will, as well.
    
    Specified by:
    
    getDataValueFactory in interface Activation
    
    Returns:
    
    DataValueFactory
  - getCurrentConnection
```
public java.sql.Connection getCurrentConnection()
                                         throws java.sql.SQLException
```
    Used to get a proxy for the current connection.
    
    Throws:
    
    java.sql.SQLException - Thrown on failure to get connection
  - getDynamicResults
```
public java.sql.ResultSet[][] getDynamicResults()
```
    Real implementations of this method are provided by a generated class.
    
    Specified by:
    
    getDynamicResults in interface Activation
    
    Returns:
    
    null if no dynamic results exists. Otherwise an array of ResultSet arrays, each of length one containing null or a reference to a ResultSet.
  - getMaxDynamicResults
```
public int getMaxDynamicResults()
```
    Real implementations of this method are provided by a generated class.
    
    Specified by:
    
    getMaxDynamicResults in interface Activation
  - getDB2Length
```
public NumberDataValue getDB2Length(DataValueDescriptor value,
                                    int constantLength,
                                    NumberDataValue reUse)
                             throws StandardException
```
    Compute the DB2 compatible length of a value.
    
    Parameters:
    
    value -
    
    constantLength - The length, if it is a constant modulo null/not null. -1 if the length is not constant
    
    reUse - If non-null then re-use this as a container for the length
    
    Returns:
    
    the DB2 compatible length, set to null if value is null.
    
    Throws:
    
    StandardException
  - getDependableFinder
```
public DependableFinder getDependableFinder()
```
    Description copied from interface: Dependable
    
    Get an object which can be written to disk and which, when read from disk, will find or reconstruct this in-memory Dependable.
    
    Specified by:
    
    getDependableFinder in interface Dependable
    
    Returns:
    
    A Finder object that can be written to disk if this is a Persistent Dependable. Null if this is not a persistent dependable.
    
    See Also:
    
    Dependable.getDependableFinder()
  - getObjectName
```
public java.lang.String getObjectName()
```
    Description copied from interface: Dependable
    
    Get the name of this Dependable OBJECT. This is useful for diagnostic messages.
    
    Specified by:
    
    getObjectName in interface Dependable
    
    Returns:
    
    Name of Dependable OBJECT.
    
    See Also:
    
    Dependable.getObjectName()
  - getObjectID
```
public UUID getObjectID()
```
    Description copied from interface: Dependable
    
    Get the UUID of this Dependable OBJECT.
    
    Specified by:
    
    getObjectID in interface Dependable
    
    Returns:
    
    UUID of this OBJECT.
    
    See Also:
    
    Dependable.getObjectID()
  - getClassType
```
public java.lang.String getClassType()
```
    Description copied from interface: Dependable
    
    Get the unique class id for the Dependable. Every Dependable belongs to a class of Dependables.
    
    Specified by:
    
    getClassType in interface Dependable
    
    Returns:
    
    type of this Dependable.
    
    See Also:
    
    Dependable.getClassType()
  - isPersistent
```
public boolean isPersistent()
```
    Description copied from interface: Dependable
    
    Return whether or not this Dependable is persistent. Persistent dependencies are stored in SYS.SYSDEPENDS.
    
    Specified by:
    
    isPersistent in interface Dependable
    
    Returns:
    
    true if this Dependable is persistent.
    
    See Also:
    
    Dependable.isPersistent()
  - isValid
```
public boolean isValid()
```
    Description copied from interface: Dependent
    
    Check that all of the dependent's dependencies are valid.
    
    Specified by:
    
    isValid in interface Dependent
    
    Returns:
    
    true if the dependent is currently valid
    
    See Also:
    
    Dependent.isValid()
  - makeInvalid
```
public void makeInvalid(int action,
                        LanguageConnectionContext lcc)
                 throws StandardException
```
    Description copied from interface: Dependent
    
    Mark the dependent as invalid (due to at least one of its dependencies being invalid).
    
    Specified by:
    
    makeInvalid in interface Dependent
    
    Parameters:
    
    action - The action causing the invalidation
    
    lcc - The LanguageConnectionContext
    
    Throws:
    
    StandardException - thrown if unable to make it invalid
    
    See Also:
    
    Dependent.makeInvalid(int, org.apache.derby.iapi.sql.conn.LanguageConnectionContext)
  - prepareToInvalidate
```
public void prepareToInvalidate(Provider p,
                                int action,
                                LanguageConnectionContext lcc)
                         throws StandardException
```
    Description copied from interface: Dependent
    
    Prepare to mark the dependent as invalid (due to at least one of its dependencies being invalid).
    
    Specified by:
    
    prepareToInvalidate in interface Dependent
    
    Parameters:
    
    p - the provider
    
    action - The action causing the invalidation
    
    lcc - The LanguageConnectionContext
    
    Throws:
    
    StandardException - thrown if unable to make it invalid
    
    See Also:
    
    Dependent.prepareToInvalidate(org.apache.derby.iapi.sql.depend.Provider, int, org.apache.derby.iapi.sql.conn.LanguageConnectionContext)
  - getMonitor
```
static ModuleFactory getMonitor()
```
    Privileged Monitor lookup. Must be package private so that user code can't call this entry point.

Class BaseActivation

Field Summary

Fields inherited from interface org.apache.derby.catalog.Dependable

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface org.apache.derby.iapi.services.loader.GeneratedByteCode

Field Detail

lcc

cm

preStmt

resultSet

resultDescription

closed

cursorName

numSubqueries

singleExecution

inUse

targetVTI

warnings

gc

checkRowCounts

rowCountsCheckedThisExecution

MAX_SQRT

TEN_PERCENT_THRESHOLD

updateHeapCC

indexSC

indexConglomerateNumber

ddlTableDescriptor

maxRows

forCreateTable

scrollable

resultSetHoldability

forUpdateIndexScan

autoGeneratedKeysResultSetMode

autoGeneratedKeysColumnIndexes

autoGeneratedKeysColumnNames

isValid

UUIDString

UUIDValue

parentActivation

sqlSessionContextForChildren

constantActionStack

indexOfSessionTableNamesInSavedObjects

row

pvs

raParentResultSets

parentResultSets

cal

Constructor Detail

BaseActivation

Method Detail

initFromContext

execute

decorateResultSet

createResultSet

reinit

getPreparedStatement

pushConstantAction

popConstantAction

getConstantAction

checkStatementValidity

setupActivation

getResultSet

getRowLocationTemplate

getResultDescription

reset

close

closeActivationAction

isClosed

setSingleExecution

isSingleExecution

getNumSubqueries

isCursorActivation

setGC

getGC

getMethod

e0

e1

e2