Class GenericStorablePreparedStatement

java.lang.Object

org.apache.derby.impl.sql.GenericPreparedStatement

org.apache.derby.impl.sql.GenericStorablePreparedStatement

All Implemented Interfaces:

Externalizable, Serializable, Dependable, Formatable, TypedFormat, Dependent, ExecPreparedStatement, PreparedStatement, StorablePreparedStatement

public class GenericStorablePreparedStatement
extends GenericPreparedStatement
implements Formatable, StorablePreparedStatement

Prepared statement that can be made persistent.

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
private ByteArray	byteCode
private String	className

Fields inherited from class GenericPreparedStatement

activationClass, beginCompileTimestamp, bindTime, compileTime, endCompileTimestamp, executionConstants, generateTime, invalidatedWhileCompiling, isAtomic, isValid, optimizeTime, paramTypeDescriptors, parseTime, requiredPermissionsList, resultDesc, savedObjects, sourceTxt, spsAction, statement, targetTable, updateColumns, updateMode, UUIDString, UUIDValue

Fields inherited from interface 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

Constructor	Description
GenericStorablePreparedStatement()	Niladic constructor, for formatable only.
GenericStorablePreparedStatement(Statement stmt)

Method Summary

Modifier and Type	Method	Description
GeneratedClass	getActivationClass()	Get and load the activation class.
(package private) ByteArray	getByteCodeSaver()	Get our byte code array.
private static Context	getContext(String contextID)	Privileged lookup of a Context.
int	getTypeFormatId()	Get the formatID which corresponds to this class.
boolean	isStorable()	//////////////////////////////////////////////////////////
void	loadGeneratedClass()	Load up the class from the saved bytes.
void	readExternal(ObjectInput in)
(package private) void	setActivationClass(GeneratedClass ac)
String	toString()
void	writeExternal(ObjectOutput out)

Methods inherited from class GenericPreparedStatement

beginCompiling, completeCompile, endCompiling, execute, executeSubStatement, executeSubStatement, finish, getActivation, getBeginCompileTimestamp, getBindTimeInMillis, getClassType, getClone, getCompileTimeInMillis, getCompileTimeWarnings, getConstantAction, getCursorInfo, getDependableFinder, getEndCompileTimestamp, getGenerateTimeInMillis, getInitialRowCount, getObjectID, getObjectName, getOptimizeTimeInMillis, getParameterType, getParameterTypes, getParseTimeInMillis, getRequiredPermissionsList, getResultDescription, getSavedObject, getSavedObjects, getSource, getSPSName, getStalePlanCheckInterval, getTargetTable, getUpdateMode, getVersionCounter, hasUpdateColumns, incrementExecutionCount, incrementVersionCounter, isAtomic, isCompiling, isPersistent, isUpdateColumn, isValid, makeInvalid, needsSavepoint, prepareToInvalidate, referencesSessionSchema, referencesSessionSchema, rePrepare, rePrepare, setCacheHolder, setCompileTimeMillis, setCompileTimeWarnings, setConstantAction, setCursorInfo, setExecuteStatementNameAndSchema, setIsAtomic, setNeedsSavepoint, setRequiredPermissionsList, setSavedObjects, setSource, setSPSAction, setSPSName, setStalePlanCheckInterval, setValid, upToDate, upToDate

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface Dependable

getClassType, getDependableFinder, getObjectID, getObjectName, isPersistent

Methods inherited from interface Dependent

isValid, makeInvalid, prepareToInvalidate

Methods inherited from interface ExecPreparedStatement

finish, getClone, getConstantAction, getCursorInfo, getInitialRowCount, getRequiredPermissionsList, getSavedObject, getSavedObjects, getStalePlanCheckInterval, getTargetTable, getUpdateMode, hasUpdateColumns, incrementExecutionCount, isUpdateColumn, needsSavepoint, setSource, setSPSAction, setStalePlanCheckInterval, setValid, upToDate

Methods inherited from interface PreparedStatement

execute, executeSubStatement, executeSubStatement, getActivation, getBeginCompileTimestamp, getBindTimeInMillis, getCompileTimeInMillis, getCompileTimeWarnings, getEndCompileTimestamp, getGenerateTimeInMillis, getOptimizeTimeInMillis, getParameterType, getParameterTypes, getParseTimeInMillis, getResultDescription, getSource, getSPSName, getVersionCounter, isAtomic, referencesSessionSchema, rePrepare, upToDate

Field Details

byteCode

private ByteArray byteCode

className

private String className

Constructor Details

GenericStorablePreparedStatement

public GenericStorablePreparedStatement()

Niladic constructor, for formatable only.

GenericStorablePreparedStatement

GenericStorablePreparedStatement(Statement stmt)

Method Details

getByteCodeSaver

ByteArray getByteCodeSaver()

Get our byte code array. Used by others to save off our byte code for us.

Overrides:

getByteCodeSaver in class GenericPreparedStatement

Returns:

the byte code saver

getActivationClass

public GeneratedClass getActivationClass()
                                  throws StandardException

Get and load the activation class. Will always return a loaded/valid class or null if the class cannot be loaded.

Specified by:

getActivationClass in interface ExecPreparedStatement

Overrides:

getActivationClass in class GenericPreparedStatement

Returns:

the generated class, or null if the class cannot be loaded

Throws:

StandardException - on error

setActivationClass

void setActivationClass(GeneratedClass ac)

Overrides:

setActivationClass in class GenericPreparedStatement

loadGeneratedClass

public void loadGeneratedClass()
                        throws StandardException

Load up the class from the saved bytes.

Specified by:

loadGeneratedClass in interface StorablePreparedStatement

Throws:

StandardException - on error

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

Throws:

IOException - on error

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
ClassNotFoundException

Specified by:

readExternal in interface Externalizable

Throws:

IOException - on error

ClassNotFoundException - on error

See Also:

• Externalizable.readExternal(ObjectInput)

getTypeFormatId

public int getTypeFormatId()

Get the formatID which corresponds to this class.

Specified by:

getTypeFormatId in interface TypedFormat

Returns:

the formatID of this class

isStorable

public boolean isStorable()

//////////////////////////////////////////////////////////

Overrides:

isStorable in class GenericPreparedStatement

toString

public String toString()

Overrides:

toString in class GenericPreparedStatement

getContext

private static Context getContext(String contextID)

Privileged lookup of a Context. Must be private so that user code can't call this entry point.