Class OperatorNode

java.lang.Object

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

org.apache.derby.impl.sql.compile.ValueNode

org.apache.derby.impl.sql.compile.OperatorNode

All Implemented Interfaces:

Visitable

Direct Known Subclasses:

BinaryOperatorNode, TernaryOperatorNode, UnaryOperatorNode

abstract class OperatorNode
extends ValueNode

Abstract base-class for the various operator nodes: UnaryOperatorNode, BinaryOperatorNode and TernarnyOperatorNode.

Field Summary

Fields inherited from class ValueNode

transformed

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
OperatorNode(ContextManager cm)

Method Summary

Modifier and Type	Method	Description
(package private) static void	pushSqlXmlUtil(ExpressionClassBuilder acb, MethodBuilder mb, String xmlQuery, String xmlOpName)	Generate code that pushes an SqlXmlUtil instance onto the stack.

Methods inherited from class ValueNode

bindExpression, bindExpression, categorize, changeToCNF, checkIsBoolean, checkTopPredicatesForEqualsConditions, constantExpression, copyFields, eliminateNots, evaluateConstantExpressions, genEqualsFalseTree, generate, generateExpression, genIsNullTree, genSQLJavaSQLTree, getClone, getColumnName, getConstantValueAsObject, getDataValueFactory, getOrderableVariantType, getSchemaName, getSourceResultColumn, getTableName, getTablesReferenced, getTransformed, getTypeCompiler, getTypeId, getTypeServices, isBinaryEqualsOperatorNode, isBooleanFalse, isBooleanTrue, isCloneable, isConstantExpression, isEquivalent, isInListProbeNode, isParameterNode, isRelationalOperator, isSameNodeKind, optimizableEqualityNode, preprocess, putAndsOnTop, remapColumnReferencesToExpressions, requiresTypeFromContext, selectivity, setCollationInfo, setCollationInfo, setCollationUsingCompilationSchema, setCollationUsingCompilationSchema, setNullability, setTransformed, setType, setType, setType, toString, updatableByCursor, verifyChangeToCNF, verifyEliminateNots, verifyPutAndsOnTop

Methods inherited from class QueryTreeNode

accept, acceptChildren, 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, isAtomic, isPrivilegeCollectionRequired, isSessionSchema, isSessionSchema, makeConstantAction, 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

Constructor Details

OperatorNode

OperatorNode(ContextManager cm)

Method Details

pushSqlXmlUtil

static void pushSqlXmlUtil(ExpressionClassBuilder acb,
 MethodBuilder mb,
 String xmlQuery,
 String xmlOpName)

Generate code that pushes an SqlXmlUtil instance onto the stack. The instance will be created and cached in the activation's constructor, so that we don't need to create a new instance for every row.

If the xmlQuery parameter is non-null, there will also be code that compiles the query when the SqlXmlUtil instance is created.

Parameters:

acb - builder for the class in which the generated code lives

mb - builder for the method that implements this operator

xmlQuery - the XML query to be executed by the operator, or null if this isn't an XMLEXISTS or XMLQUERY operator

xmlOpName - the name of the operator (ignored if xmlQuery is null)