pack-priv abstract Class OperatorNode

Class Inheritance

java.lang.Object
org.apache.derby.impl.sql.compile.QueryTreeNode
org.apache.derby.impl.sql.compile.ValueNode
org.apache.derby.impl.sql.compile.OperatorNode

Known Direct Subclasses

org.apache.derby.impl.sql.compile.TernaryOperatorNode, org.apache.derby.impl.sql.compile.UnaryOperatorNode, org.apache.derby.impl.sql.compile.BinaryOperatorNode

Imports

java.lang.reflect.Modifier, org.apache.derby.iapi.services.classfile.VMOpcode, org.apache.derby.iapi.services.compiler.LocalField, .MethodBuilder, org.apache.derby.iapi.services.context.ContextManager, org.apache.derby.iapi.types.SqlXmlUtil

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

Field Summary

Inherited from org.apache.derby.impl.sql.compile.ValueNode:: transformed

Constructor Summary

Access	Constructor and Description
pack-priv	OperatorNode(ContextManager cm)

Method Summary

Modifier and Type Method and Description

Modifier and Type	Method and Description
pack-priv static void	pushSqlXmlUtil(ExpressionClassBuilder builder for the class in which the generated code lives acb, MethodBuilder builder for the method that implements this operator mb, String the XML query to be executed by the operator, or `null` if this isn't an XMLEXISTS or XMLQUERY operator xmlQuery, String the name of the operator (ignored if `xmlQuery` is `null`) xmlOpName) Generate code that pushes an SqlXmlUtil instance onto the stack.

pack-priv static void

pushSqlXmlUtil(ExpressionClassBuilder

builder for the class in which the generated code lives

acb, MethodBuilder

builder for the method that implements this operator

mb, String

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

xmlQuery, String

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

xmlOpName)

Generate code that pushes an SqlXmlUtil instance onto the stack.

Inherited from org.apache.derby.impl.sql.compile.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

Constructor Detail

OperatorNode	back to summary
pack-priv OperatorNode(ContextManager cm)

Method Detail

pushSqlXmlUtil back to summary

pushSqlXmlUtil	back to summary
pack-priv 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:ExpressionClassBuilder builder for the class in which the generated code lives mb:MethodBuilder builder for the method that implements this operator xmlQuery:String the XML query to be executed by the operator, or `null` if this isn't an XMLEXISTS or XMLQUERY operator xmlOpName:String the name of the operator (ignored if `xmlQuery` is `null`)

pack-priv 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:ExpressionClassBuilder: builder for the class in which the generated code lives
mb:MethodBuilder: builder for the method that implements this operator
xmlQuery:String: the XML query to be executed by the operator, or null if this isn't an XMLEXISTS or XMLQUERY operator
xmlOpName:String: the name of the operator (ignored if xmlQuery is null)