SavepointNode (Apache Derby V10.14 Internals)

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 java.lang.String savepointName

private int savepointStatementType
- Fields inherited from class org.apache.derby.impl.sql.compile.DDLStatementNode
  ADD_TYPE, DROP_STATISTICS, DROP_TYPE, implicitCreateSchema, LOCKING_TYPE, MODIFY_TYPE, UNKNOWN_TYPE, UPDATE_STATISTICS
- Fields inherited from class org.apache.derby.impl.sql.compile.QueryTreeNode
  AUTOINCREMENT_CREATE_MODIFY, AUTOINCREMENT_CYCLE, AUTOINCREMENT_INC_INDEX, AUTOINCREMENT_IS_AUTOINCREMENT_INDEX, AUTOINCREMENT_START_INDEX
- Fields inherited from class org.apache.derby.impl.sql.compile.StatementNode
  EMPTY_TD_LIST, NEED_CURSOR_ACTIVATION, NEED_DDL_ACTIVATION, NEED_NOTHING_ACTIVATION, NEED_PARAM_ACTIVATION, NEED_ROW_ACTIVATION

Fields
Modifier and Type	Field	Description
`private java.lang.String`	`savepointName`
`private int`	`savepointStatementType`

Constructor Summary

Constructors
Constructor Description

SavepointNode(java.lang.String objectName, int savepointStatementType, ContextManager cm)
Constructor for a SavepointNode

Constructors
Constructor	Description
`SavepointNode(java.lang.String objectName, int savepointStatementType, ContextManager cm)`	Constructor for a SavepointNode

Method Summary

All Methods Instance Methods Concrete Methods
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) 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
acceptChildren, activationKind, generate, getFullName, getObjectName, getRelativeName, getSchemaDescriptor, getSchemaDescriptor, getTableDescriptor, getTableDescriptor, getTableDescriptor, getTableDescriptor, initAndCheck, isAtomic, makeFromList

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

Methods inherited from class org.apache.derby.impl.sql.compile.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 org.apache.derby.impl.sql.compile.StatementNode
bindStatement, executeSchemaName, executeStatementName, generate, getCursorInfo, getSPSName, lockTableForCompilation, makeResultDescription, optimizeStatement, updateIndexStatisticsFor

- Field Detail
  - savepointName
```
private java.lang.String savepointName
```
  - savepointStatementType
```
private int savepointStatementType
```
- Constructor Detail
  - SavepointNode
```
SavepointNode(java.lang.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 Detail
  - 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
```
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 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

Class SavepointNode

Field Summary

Fields inherited from class org.apache.derby.impl.sql.compile.DDLStatementNode

Fields inherited from class org.apache.derby.impl.sql.compile.QueryTreeNode

Fields inherited from class org.apache.derby.impl.sql.compile.StatementNode

Constructor Summary

Method Summary

Methods inherited from class org.apache.derby.impl.sql.compile.DDLStatementNode

Methods inherited from class java.lang.Object

Methods inherited from class org.apache.derby.impl.sql.compile.QueryTreeNode

Methods inherited from class org.apache.derby.impl.sql.compile.StatementNode

Field Detail

savepointName

savepointStatementType

Constructor Detail

SavepointNode

Method Detail

toString

statementToString

needsSavepoint

makeConstantAction