Package org.apache.derby.impl.sql.compile

Class BinaryLogicalOperatorNode

java.lang.Object

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

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

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

org.apache.derby.impl.sql.compile.BinaryOperatorNode

org.apache.derby.impl.sql.compile.BinaryLogicalOperatorNode

All Implemented Interfaces:

Visitable

Direct Known Subclasses:

AndNode, IsNode, OrNode

abstract class BinaryLogicalOperatorNode
extends BinaryOperatorNode

Field Summary

Fields

Modifier and Type	Field	Description
(package private) boolean	shortCircuitValue

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

AND, BinaryArgTypes, BinaryMethodNames, BinaryOperators, BinaryResultTypes, CONCATENATE, DIVIDE, EQ, GE, GT, K_BASE, K_XMLEXISTS, K_XMLQUERY, kind, LE, leftInterfaceType, leftOperand, LIKE, LT, methodName, MINUS, NE, operator, OR, PLUS, receiver, resultInterfaceType, rightInterfaceType, rightOperand, TIMES

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_CYCLE, AUTOINCREMENT_INC_INDEX, AUTOINCREMENT_IS_AUTOINCREMENT_INDEX, AUTOINCREMENT_START_INDEX

Constructor Summary

Constructors

Constructor	Description
BinaryLogicalOperatorNode(ValueNode leftOperand, ValueNode rightOperand, java.lang.String methodName, ContextManager cm)

Method Summary

Modifier and Type	Method	Description
(package private) ValueNode	bindExpression(FromList fromList, SubqueryList subqueryList, java.util.List<AggregateNode> aggregates)	Bind this logical operator.
(package private) void	generateExpression(ExpressionClassBuilder acb, MethodBuilder mb)	Do code generation for this logical binary operator.
(package private) DataTypeDescriptor	resolveLogicalBinaryOperator(DataTypeDescriptor leftType, DataTypeDescriptor rightType)
(package private) boolean	verifyEliminateNots()	Verify that eliminateNots() did its job correctly.

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

acceptChildren, bindXMLQuery, categorize, constantExpression, genSQLJavaSQLTree, getLeftOperand, getOrderableVariantType, getReceiverInterfaceName, getRightOperand, isConstantExpression, isEquivalent, isSameNodeKind, preprocess, printSubNodes, remapColumnReferencesToExpressions, setLeftOperand, setLeftRightInterfaceType, setMethodName, setOperator, setRightOperand, toString

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

pushSqlXmlUtil

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

bindExpression, changeToCNF, checkIsBoolean, checkTopPredicatesForEqualsConditions, copyFields, eliminateNots, evaluateConstantExpressions, genEqualsFalseTree, generate, genIsNullTree, getClone, getColumnName, getConstantValueAsObject, getDataValueFactory, getSchemaName, getSourceResultColumn, getTableName, getTablesReferenced, getTransformed, getTypeCompiler, getTypeId, getTypeServices, isBinaryEqualsOperatorNode, isBooleanFalse, isBooleanTrue, isCloneable, isInListProbeNode, isParameterNode, isRelationalOperator, optimizableEqualityNode, putAndsOnTop, requiresTypeFromContext, selectivity, setCollationInfo, setCollationInfo, setCollationUsingCompilationSchema, setCollationUsingCompilationSchema, setNullability, setTransformed, setType, setType, setType, updatableByCursor, verifyChangeToCNF, verifyPutAndsOnTop

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, isAtomic, isPrivilegeCollectionRequired, isSessionSchema, isSessionSchema, makeConstantAction, makeTableName, makeTableName, nodeHeader, optimizerTracingIsOn, orReliability, parseSearchCondition, parseStatement, printLabel, referencesSessionSchema, resolveTableToSynonym, setBeginOffset, setEndOffset, setRefActionInfo, stackPrint, taggedWith, treePrint, treePrint, verifyClassExist

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

shortCircuitValue

boolean shortCircuitValue

Constructor Detail

BinaryLogicalOperatorNode

BinaryLogicalOperatorNode(ValueNode leftOperand,
                          ValueNode rightOperand,
                          java.lang.String methodName,
                          ContextManager cm)

Method Detail

bindExpression

ValueNode bindExpression(FromList fromList,
                         SubqueryList subqueryList,
                         java.util.List<AggregateNode> aggregates)
                  throws StandardException

Bind this logical operator. All that has to be done for binding a logical operator is to bind the operands, check that both operands are BooleanDataValue, and set the result type to BooleanDataValue.

Overrides:

bindExpression in class BinaryOperatorNode

Parameters:

fromList - The query's FROM list

subqueryList - The subquery list being built as we find SubqueryNodes

aggregates - The aggregate list being built as we find AggregateNodes

Returns:

The new top of the expression tree.

Throws:

StandardException - Thrown on error

verifyEliminateNots

boolean verifyEliminateNots()

Verify that eliminateNots() did its job correctly. Verify that there are no NotNodes above the top level comparison operators and boolean expressions.

Overrides:

verifyEliminateNots in class ValueNode

Returns:

Boolean which reflects validity of the tree.

generateExpression

void generateExpression(ExpressionClassBuilder acb,
                        MethodBuilder mb)
                 throws StandardException

Do code generation for this logical binary operator. This is used for AND and OR. the IsNode extends this class but overrides generateExpression.

Overrides:

generateExpression in class BinaryOperatorNode

Parameters:

acb - The ExpressionClassBuilder for the class we're generating

mb - The method the code to place the code

Throws:

StandardException - Thrown on error

resolveLogicalBinaryOperator

DataTypeDescriptor resolveLogicalBinaryOperator(DataTypeDescriptor leftType,
                                                DataTypeDescriptor rightType)
                                         throws StandardException

Throws:

StandardException