Class AndNoShortCircuitNode

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

org.apache.derby.impl.sql.compile.AndNode

org.apache.derby.impl.sql.compile.AndNoShortCircuitNode

All Implemented Interfaces:

Visitable

class AndNoShortCircuitNode
extends AndNode

Used for deferrable CHECK constraint. When we evaluate check constraints for a row where at least one constraint is deferrable, we need to know exactly which set of constraints violated the checks. The normal evaluation of check constraints is generated as one big (NOT c1) AND (NOT c2) AND ... AND (NOT cn) using short-circuited (McCarthy) boolean evaluation.

This kind of evaluation of the expression can only tell us the first failing constraint, so we use full evaluation instead, as embodied in this node. See also BooleanDataValue.throwExceptionIfImmediateAndFalse(String, String, String, Activation, int).

Field Summary

Fields inherited from class BinaryLogicalOperatorNode

shortCircuitValue

Fields inherited from class 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 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
AndNoShortCircuitNode(ValueNode leftOperand, ValueNode rightOperand, ContextManager cm)

Method Summary

Modifier and Type	Method	Description
(package private) void	generateExpression(ExpressionClassBuilder acb, MethodBuilder mb)	Generate code for no short-circuiting AND operator.

Methods inherited from class AndNode

bindExpression, changeToCNF, eliminateNots, postBindFixup, preprocess, putAndsOnTop, verifyChangeToCNF, verifyPutAndsOnTop

Methods inherited from class BinaryLogicalOperatorNode

resolveLogicalBinaryOperator, verifyEliminateNots

Methods inherited from class BinaryOperatorNode

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

Methods inherited from class OperatorNode

pushSqlXmlUtil

Methods inherited from class ValueNode

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

Methods inherited from class 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 Object

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

Constructor Details

AndNoShortCircuitNode

AndNoShortCircuitNode(ValueNode leftOperand,
 ValueNode rightOperand,
 ContextManager cm)
               throws StandardException

Parameters:

leftOperand - The left operand of the AND

rightOperand - The right operand of the AND

cm - context manager

Throws:

StandardException - standard error policy

Method Details

generateExpression

void generateExpression(ExpressionClassBuilder acb,
 MethodBuilder mb)
                 throws StandardException

Generate code for no short-circuiting AND operator. Used to evaluate check constraints where at least one is deferrable, since we need to know exactly which constraint(s) violated the checks.

Overrides:

generateExpression in class BinaryLogicalOperatorNode

Parameters:

acb - The ExpressionClassBuilder for the class we're generating

mb - The method the code to place the code

Throws:

StandardException - standard error policy