Class SavepointNode

java.lang.Object

org.apache.derby.impl.sql.compile.QueryTreeNode

org.apache.derby.impl.sql.compile.StatementNode

org.apache.derby.impl.sql.compile.DDLStatementNode

org.apache.derby.impl.sql.compile.SavepointNode

All Implemented Interfaces:

Visitable

class SavepointNode
extends DDLStatementNode

A SavepointNode is the root of a QueryTree that represents a Savepoint (ROLLBACK savepoint, RELASE savepoint and SAVEPOINT) statement.

Field Summary

Fields

Modifier and Type	Field	Description
private String	savepointName
private int	savepointStatementType

Fields inherited from class DDLStatementNode

ADD_TYPE, DROP_STATISTICS, DROP_TYPE, implicitCreateSchema, LOCKING_TYPE, MODIFY_TYPE, UNKNOWN_TYPE, UPDATE_STATISTICS

Fields inherited from class StatementNode

EMPTY_TD_LIST, NEED_CURSOR_ACTIVATION, NEED_DDL_ACTIVATION, NEED_NOTHING_ACTIVATION, NEED_PARAM_ACTIVATION, NEED_ROW_ACTIVATION

Fields inherited from class QueryTreeNode

AUTOINCREMENT_CREATE_MODIFY, AUTOINCREMENT_CYCLE, AUTOINCREMENT_INC_INDEX, AUTOINCREMENT_IS_AUTOINCREMENT_INDEX, AUTOINCREMENT_START_INDEX

Constructor Summary

Constructors

Constructor	Description
SavepointNode(String objectName, int savepointStatementType, ContextManager cm)	Constructor for a SavepointNode

Method Summary

Modifier and Type	Method	Description
ConstantAction	makeConstantAction()	Create the Constant information that will drive the guts of Execution.
boolean	needsSavepoint()	Returns whether or not this Statement requires a set/clear savepoint around its execution.
(package private) String	statementToString()
String	toString()	Convert this object to a String.

Methods inherited from class DDLStatementNode

acceptChildren, activationKind, generate, getFullName, getObjectName, getRelativeName, getSchemaDescriptor, getSchemaDescriptor, getTableDescriptor, getTableDescriptor, getTableDescriptor, getTableDescriptor, initAndCheck, isAtomic, makeFromList

Methods inherited from class StatementNode

bindStatement, executeSchemaName, executeStatementName, generate, getCursorInfo, getSPSName, lockTableForCompilation, makeResultDescription, optimizeStatement, updateIndexStatisticsFor

Methods inherited from class QueryTreeNode

accept, addTag, addUDTUsagePriv, addUDTUsagePriv, bindOffsetFetch, bindRowMultiSet, bindUserCatalogType, bindUserType, checkReliability, checkReliability, convertDefaultNode, copyTagsFrom, createTypeDependency, debugFlush, debugPrint, disablePrivilegeCollection, formatNodeString, generateAuthorizeCheck, getBeginOffset, getClassFactory, getCompilerContext, getContext, getContextManager, getDataDictionary, getDependencyManager, getEndOffset, getExecutionFactory, getGenericConstantActionFactory, getIntProperty, getLanguageConnectionContext, getLongProperty, getNullNode, getOffsetOrderedNodes, getOptimizerFactory, getOptimizerTracer, getParameterTypes, getSchemaDescriptor, getSchemaDescriptor, getStatementType, getTableDescriptor, getTypeCompiler, getUDTDesc, isPrivilegeCollectionRequired, isSessionSchema, isSessionSchema, makeTableName, makeTableName, nodeHeader, optimizerTracingIsOn, orReliability, parseSearchCondition, parseStatement, printLabel, printSubNodes, referencesSessionSchema, resolveTableToSynonym, setBeginOffset, setEndOffset, setRefActionInfo, stackPrint, taggedWith, treePrint, treePrint, verifyClassExist

Methods inherited from class Object

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

Field Details

savepointName

private String savepointName

savepointStatementType

private int savepointStatementType

Constructor Details

SavepointNode

SavepointNode(String objectName,
 int savepointStatementType,
 ContextManager cm)
       throws StandardException

Constructor for a SavepointNode

Parameters:

objectName - The name of the savepoint

savepointStatementType - Type of savepoint statement ie rollback, release or set savepoint

cm - The context manager

Throws:

StandardException - Thrown on error

Method Details

toString

public String toString()

Convert this object to a String. See comments in QueryTreeNode.java for how this should be done for tree printing.

Overrides:

toString in class DDLStatementNode

Returns:

This object as a String

statementToString

String statementToString()

Specified by:

statementToString in class StatementNode

needsSavepoint

public boolean needsSavepoint()

Returns whether or not this Statement requires a set/clear savepoint around its execution. The following statement "types" do not require them: Cursor - unnecessary and won't work in a read only environment Xact - savepoint will get blown away underneath us during commit/rollback

Overrides:

needsSavepoint in class StatementNode

Returns:

boolean Whether or not this Statement requires a set/clear savepoint

makeConstantAction

public ConstantAction makeConstantAction()
                                  throws StandardException

Create the Constant information that will drive the guts of Execution.

Overrides:

makeConstantAction in class QueryTreeNode

Throws:

StandardException - Thrown on failure