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

java.lang.Object
  extended byorg.apache.derby.impl.sql.compile.QueryTreeNode
      extended byorg.apache.derby.impl.sql.compile.StatementNode
          extended byorg.apache.derby.impl.sql.compile.DDLStatementNode
              extended byorg.apache.derby.impl.sql.compile.SavepointNode
All Implemented Interfaces:
Visitable

public 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
private  java.lang.String savepointName
           
private  int savepointStatementType
           
 
Fields inherited from class org.apache.derby.impl.sql.compile.DDLStatementNode
ADD_TYPE, DROP_TYPE, implicitCreateSchema, LOCKING_TYPE, MODIFY_TYPE, UNKNOWN_TYPE
 
Fields inherited from class org.apache.derby.impl.sql.compile.StatementNode
NEED_CURSOR_ACTIVATION, NEED_DDL_ACTIVATION, NEED_NOTHING_ACTIVATION, NEED_PARAM_ACTIVATION, NEED_ROW_ACTIVATION
 
Fields inherited from class org.apache.derby.impl.sql.compile.QueryTreeNode
AUTOINCREMENT_INC_INDEX, AUTOINCREMENT_IS_AUTOINCREMENT_INDEX, AUTOINCREMENT_START_INDEX, beginOffset, endOffset
 
Constructor Summary
SavepointNode()
           
 
Method Summary
 void init(java.lang.Object objectName, java.lang.Object savepointStatementType)
          Initializer for a SavepointNode
 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.
 java.lang.String statementToString()
           
 java.lang.String toString()
          Convert this object to a String.
 
Methods inherited from class org.apache.derby.impl.sql.compile.DDLStatementNode
activationKind, bindName, generate, getFullName, getObjectName, getRelativeName, getSchemaDescriptor, getTableDescriptor, getTableDescriptor, getTableDescriptor, init, initAndCheck, isAtomic
 
Methods inherited from class org.apache.derby.impl.sql.compile.StatementNode
generate, lockTableForCompilation
 
Methods inherited from class org.apache.derby.impl.sql.compile.QueryTreeNode
accept, bind, convertDefaultNode, debugFlush, debugPrint, executeSchemaName, executeStatementName, formatNodeString, foundString, generateAuthorizeCheck, getBeginOffset, getClassFactory, getCompilerContext, getContextManager, getCursorInfo, getDataDictionary, getDependencyManager, getEndOffset, getExecutionFactory, getGenericConstantActionFactory, getIntProperty, getLanguageConnectionContext, getNodeFactory, getNodeType, getNullNode, getParameterTypes, getRowEstimate, getSchemaDescriptor, getSchemaDescriptor, getSPSName, getStatementType, getTableDescriptor, getTypeCompiler, init, init, init, init, init, init, init, init, init, init, init, init, isInstanceOf, isSessionSchema, isSessionSchema, makeResultDescription, makeTableName, nodeHeader, optimize, parseQueryText, printLabel, printSubNodes, referencesSessionSchema, resolveTableToSynonym, setBeginOffset, setContextManager, setEndOffset, setNodeType, setRefActionInfo, treePrint, treePrint, verifyClassExist
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

savepointName

private java.lang.String savepointName

savepointStatementType

private int savepointStatementType
Constructor Detail

SavepointNode

public SavepointNode()
Method Detail

init

public void init(java.lang.Object objectName,
                 java.lang.Object savepointStatementType)
          throws StandardException
Initializer for a SavepointNode

Overrides:
init in class QueryTreeNode
Parameters:
objectName - The name of the savepoint
savepointStatementType - Type of savepoint statement ie rollback, release or set savepoint
Throws:
StandardException - Thrown on error

toString

public java.lang.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

public java.lang.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 QueryTreeNode
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

Built on Mon 2007-06-04 09:58:47+0400, from revision ???

Apache Derby V10.1 Engine Documentation - Copyright © 1997,2005 The Apache Software Foundation or its licensors, as applicable.