org.cdlib.xtf.saxonExt.sql
Class SQLDelete.DeleteInstruction

Object
  Expression
      SimpleExpression
          SQLDelete.DeleteInstruction

All Implemented Interfaces:

Serializable, SourceLocator, Container, EvaluableItem, SequenceIterable, InstructionInfoProvider

Enclosing class:

SQLDelete

private static class SQLDelete.DeleteInstruction
extends SimpleExpression

Field Summary

static int	CONNECTION
static int	TABLE
static int	WHERE

Fields inherited from class SimpleExpression

arguments, NO_ARGUMENTS

Fields inherited from class Expression

EVALUATE_METHOD, ITERATE_METHOD, locationId, PROCESS_METHOD, staticProperties

Constructor Summary

SQLDelete.DeleteInstruction(Expression connection, Expression table, Expression where)

Method Summary

Item	evaluateItem(XPathContext context)
String	getExpressionType()
int	getImplementationMethod() A subclass must provide one of the methods evaluateItem(), iterate(), or process().

Methods inherited from class SimpleExpression

computeCardinality, computeDependencies, display, getItemType, iterate, iterateSubExpressions, optimize, process, promote, replaceSubExpression, setArguments, simplify, typeCheck

Methods inherited from class Expression

adoptChildExpression, checkPermittedContents, computeSpecialProperties, computeStaticProperties, doPromotion, dynamicError, effectiveBooleanValue, evaluateAsString, getCardinality, getColumnNumber, getConstructType, getContainingProcedure, getDependencies, getExecutable, getHostLanguage, getInstructionInfo, getIntrinsicDependencies, getLineNumber, getLocationId, getLocationProvider, getParentExpression, getPublicId, getSlotsUsed, getSpecialProperties, getSystemId, hasBadParentPointer, markTailFunctionCalls, resetStaticProperties, setLocationId, setParentExpression, setParentExpression, suppressValidation, typeError

Methods inherited from class Object

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

Field Detail

CONNECTION

public static final int CONNECTION

See Also:

Constant Field Values

TABLE

public static final int TABLE

See Also:

Constant Field Values

WHERE

public static final int WHERE

See Also:

Constant Field Values

Constructor Detail

SQLDelete.DeleteInstruction

public SQLDelete.DeleteInstruction(Expression connection,
                                   Expression table,
                                   Expression where)

Method Detail

getImplementationMethod

public int getImplementationMethod()

A subclass must provide one of the methods evaluateItem(), iterate(), or process(). This method indicates which of the three is provided.

Overrides:

getImplementationMethod in class Expression

getExpressionType

public String getExpressionType()

Overrides:

getExpressionType in class SimpleExpression

evaluateItem

public Item evaluateItem(XPathContext context)
                  throws XPathException

Specified by:

evaluateItem in interface EvaluableItem

Overrides:

evaluateItem in class SimpleExpression

Throws:

XPathException