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

java.lang.Object
  extended by org.apache.derby.impl.sql.compile.QueryTreeNode
      extended by org.apache.derby.impl.sql.compile.ValueNode
          extended by org.apache.derby.impl.sql.compile.ConstantNode
              extended by org.apache.derby.impl.sql.compile.XMLConstantNode
All Implemented Interfaces:
Visitable

public final class XMLConstantNode
extends ConstantNode


Field Summary
 
Fields inherited from class org.apache.derby.impl.sql.compile.ConstantNode
value
 
Fields inherited from class org.apache.derby.impl.sql.compile.ValueNode
transformed
 
Fields inherited from class org.apache.derby.impl.sql.compile.QueryTreeNode
AUTOINCREMENT_CREATE_MODIFY, AUTOINCREMENT_INC_INDEX, AUTOINCREMENT_IS_AUTOINCREMENT_INDEX, AUTOINCREMENT_START_INDEX, isPrivilegeCollectionRequired
 
Constructor Summary
XMLConstantNode()
           
 
Method Summary
(package private)  void generateConstant(ExpressionClassBuilder acb, MethodBuilder mb)
          This generates the proper constant.
(package private)  java.lang.Object getConstantValueAsObject()
          Return an Object representing the bind time value of this expression tree.
 void init(java.lang.Object arg1)
          Initializer for an XMLConstantNode.
 
Methods inherited from class org.apache.derby.impl.sql.compile.ConstantNode
bindExpression, constantExpression, generateExpression, getClone, getOrderableVariantType, getValue, init, isCloneable, isConstantExpression, isEquivalent, isNull, setValue, toString
 
Methods inherited from class org.apache.derby.impl.sql.compile.ValueNode
bindExpression, categorize, changeToCNF, checkIsBoolean, checkTopPredicatesForEqualsConditions, copyFields, eliminateNots, evaluateConstantExpressions, genEqualsFalseTree, generate, generateFilter, genIsNullTree, genSQLJavaSQLTree, getColumnName, getDataValueFactory, getSchemaName, getSourceResultColumn, getTableName, getTablesReferenced, getTransformed, getTypeCompiler, getTypeId, getTypeServices, init, isBinaryEqualsOperatorNode, isBooleanFalse, isBooleanTrue, isInListProbeNode, isParameterNode, isRelationalOperator, isSameNodeType, optimizableEqualityNode, preprocess, putAndsOnTop, remapColumnReferencesToExpressions, requiresTypeFromContext, selectivity, setCollationInfo, setCollationInfo, setCollationUsingCompilationSchema, setCollationUsingCompilationSchema, setNullability, setTransformed, setType, setType, setType, updatableByCursor, verifyChangeToCNF, verifyEliminateNots, verifyPutAndsOnTop
 
Methods inherited from class org.apache.derby.impl.sql.compile.QueryTreeNode
accept, acceptChildren, bindOffsetFetch, bindRowMultiSet, bindUserType, checkReliability, checkReliability, convertDefaultNode, createTypeDependency, debugFlush, debugPrint, disablePrivilegeCollection, formatNodeString, foundString, generateAuthorizeCheck, getBeginOffset, getClassFactory, getCompilerContext, getContextManager, getCursorInfo, getDataDictionary, getDependencyManager, getEndOffset, getExecutionFactory, getGenericConstantActionFactory, getIntProperty, getLanguageConnectionContext, getNodeFactory, getNodeType, getNullNode, getParameterTypes, getRowEstimate, getSchemaDescriptor, getSchemaDescriptor, getStatementType, getTableDescriptor, getTypeCompiler, init, init, init, init, init, init, init, init, init, init, init, isAtomic, isInstanceOf, isPrivilegeCollectionRequired, isSessionSchema, isSessionSchema, makeConstantAction, makeTableName, makeTableName, nodeHeader, orReliability, parseStatement, printLabel, printSubNodes, referencesSessionSchema, resolveTableToSynonym, setBeginOffset, setContextManager, setEndOffset, setNodeType, setRefActionInfo, stackPrint, treePrint, treePrint, verifyClassExist
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

XMLConstantNode

public XMLConstantNode()
Method Detail

init

public void init(java.lang.Object arg1)
          throws StandardException
Initializer for an XMLConstantNode.

Overrides:
init in class QueryTreeNode
Parameters:
arg1 - The TypeId for the type of the node
Throws:
StandardException

getConstantValueAsObject

java.lang.Object getConstantValueAsObject()
                                    throws StandardException
Return an Object representing the bind time value of this expression tree. If the expression tree does not evaluate to a constant at bind time then we return null.

Overrides:
getConstantValueAsObject in class ValueNode
Returns:
An Object representing the bind time value of this expression tree (null if not a bind time constant).
Throws:
StandardException - Thrown on error

generateConstant

void generateConstant(ExpressionClassBuilder acb,
                      MethodBuilder mb)
                throws StandardException
This generates the proper constant. For an XML value, this constant value is simply the XML string (which is just null because null values are the only types of XML constants we can have).

Specified by:
generateConstant in class ConstantNode
Parameters:
acb - The ExpressionClassBuilder for the class being built
mb - The method the code to place the code
Throws:
StandardException - Thrown on error

Built on Thu 2011-03-10 11:54:14+0000, from revision ???

Apache Derby V10.6 Internals - Copyright © 2004,2007 The Apache Software Foundation. All Rights Reserved.