org.apache.derby.impl.sql.compile
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:

Node, 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 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

OperatorNode()

Method Summary

(package private) static void

pushSqlXmlUtil(ExpressionClassBuilder acb, MethodBuilder mb, java.lang.String xmlQuery, java.lang.String xmlOpName) Generate code that pushes an SqlXmlUtil instance onto the stack.

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

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

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

accept, acceptChildren, bindOffsetFetch, bindRowMultiSet, bindUserCatalogType, 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, getSchemaDescriptor, getSchemaDescriptor, getStatementType, getTableDescriptor, getTypeCompiler, init, init, 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

OperatorNode

OperatorNode()

Method Detail

pushSqlXmlUtil

static void pushSqlXmlUtil(ExpressionClassBuilder acb,
                           MethodBuilder mb,
                           java.lang.String xmlQuery,
                           java.lang.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)