Class TestConstraintNode

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.UnaryOperatorNode

org.apache.derby.impl.sql.compile.UnaryLogicalOperatorNode

org.apache.derby.impl.sql.compile.TestConstraintNode

All Implemented Interfaces:

Visitable

class TestConstraintNode
extends UnaryLogicalOperatorNode

A TestConstraintNode is used to determine when a constraint has been violated.

Field Summary

Fields

Modifier and Type	Field	Description
private final UUID	cid
private final String	constraintName
private final boolean	deferrable
private final String	sqlState
private final String	tableName

Fields inherited from class UnaryOperatorNode

K_BASE, K_XMLPARSE, K_XMLSERIALIZE, kind, methodName, operand, operator, receiverInterfaceType, resultInterfaceType, UnaryArgTypes, UnaryMethodNames, UnaryOperators, UnaryResultTypes

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
TestConstraintNode(ValueNode booleanValue, String sqlState, String tableName, ConstraintDescriptor cd, ContextManager cm)

Method Summary

Modifier and Type	Method	Description
(package private) ValueNode	bindExpression(FromList fromList, SubqueryList subqueryList, List<AggregateNode> aggregates)	Bind this logical operator.
(package private) void	generateExpression(ExpressionClassBuilder acb, MethodBuilder mb)	Do code generation for the TestConstraint operator.

Methods inherited from class UnaryLogicalOperatorNode

setFullTypeInfo

Methods inherited from class UnaryOperatorNode

acceptChildren, addXmlOpMethodParams, bindOperand, bindParameter, categorize, constantExpression, getOperand, getOperatorString, getOrderableVariantType, getParameterOperand, getReceiverInterfaceName, isConstantExpression, isEquivalent, isSameNodeKind, preprocess, printSubNodes, remapColumnReferencesToExpressions, setMethodName, setOperator, toString

Methods inherited from class OperatorNode

pushSqlXmlUtil

Methods inherited from class ValueNode

bindExpression, changeToCNF, checkIsBoolean, checkTopPredicatesForEqualsConditions, copyFields, eliminateNots, evaluateConstantExpressions, genEqualsFalseTree, generate, genIsNullTree, genSQLJavaSQLTree, 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, verifyEliminateNots, verifyPutAndsOnTop

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

Field Details

sqlState

private final String sqlState

tableName

private final String tableName

cid

private final UUID cid

deferrable

private final boolean deferrable

constraintName

private final String constraintName

Constructor Details

TestConstraintNode

TestConstraintNode(ValueNode booleanValue,
 String sqlState,
 String tableName,
 ConstraintDescriptor cd,
 ContextManager cm)
            throws StandardException

Parameters:

booleanValue - The operand of the constraint test

sqlState - The SQLState of the exception to throw if the constraint has failed

tableName - The name of the table that the constraint is on

cd - The descriptor of the constraint being checked

cm - context manager

Throws:

StandardException

Method Details

bindExpression

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

Bind this logical operator. All that has to be done for binding a logical operator is to bind the operand, check that the operand is SQLBoolean, and set the result type to SQLBoolean.

Overrides:

bindExpression in class UnaryLogicalOperatorNode

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

generateExpression

void generateExpression(ExpressionClassBuilder acb,
 MethodBuilder mb)
                 throws StandardException

Do code generation for the TestConstraint operator.

Overrides:

generateExpression in class UnaryOperatorNode

Parameters:

acb - The ExpressionClassBuilder for the class we're generating

mb - The method the expression will go into

Throws:

StandardException - Thrown on error