net.sf.saxon.expr

Class CurrentItemExpression

java.lang.Object

net.sf.saxon.expr.Expression

net.sf.saxon.expr.ContextItemExpression

net.sf.saxon.expr.CurrentItemExpression

All Implemented Interfaces:

IdentityComparable

public class CurrentItemExpression
extends ContextItemExpression

The expression is generated when compiling the current() function in XSLT. It differs from the ContextItemExpression "." only in the error code that is returned when there is no context item.

Field Summary

Fields inherited from class net.sf.saxon.expr.Expression

EFFECTIVE_BOOLEAN_VALUE, EVALUATE_METHOD, ITEM_FEED_METHOD, ITERATE_METHOD, MAX_SEQUENCE_LENGTH, MAX_STRING_LENGTH, PROCESS_METHOD, staticProperties, UNBOUNDED_LOWER, UNBOUNDED_UPPER, UPDATE_METHOD, WATCH_METHOD

Constructor Summary

Constructors

Constructor and Description
CurrentItemExpression()

Method Summary

Methods

Modifier and Type	Method and Description
protected String	getErrorCodeForUndefinedContext() Get the error code for use when there is no context item
ExpressionCompiler	getExpressionCompiler() Return the compiler of the CurrentItem expression

Methods inherited from class net.sf.saxon.expr.ContextItemExpression

addToPathMap, computeCardinality, computeSpecialProperties, copy, equals, evaluateItem, export, getExpressionName, getImplementationMethod, getIntrinsicDependencies, getItemType, getStreamingAdjunct, hashCode, isContextPossiblyUndefined, isSubtreeExpression, iterate, optimize, setStaticInfo, toPattern, toShortString, toString, typeCheck

Methods inherited from class net.sf.saxon.expr.Expression

adoptChildExpression, checkedOperands, checkForUpdatingSubexpressions, checkPermittedContents, clearStreamabilityData, computeDependencies, computeStaticProperties, doPromotion, dynamicError, effectiveBooleanValue, evaluateAsString, evaluatePendingUpdates, explain, getCardinality, getConfiguration, getConstructType, getCost, getDependencies, getEvaluationMethod, getHostLanguage, getIntegerBounds, getLocation, getNetCost, getObjectName, getPackageData, getParentExpression, getPosture, getPostureAndSweepIfKnown, getProperties, getProperty, getRetainedStaticContext, getSlotsUsed, getSpecialProperties, getStaticBaseURI, getStaticBaseURIString, getStreamability, getSweep, getSystemId, hasVariableBinding, identityHashCode, implementsStaticTypeCheck, isCallOn, isCallOnSystemFunction, isIdentical, isUpdatingExpression, isVacuousExpression, iterateEvents, makeStreamingAdjunct, markTailFunctionCalls, operandList, operands, operandSparseList, optimizeChildren, optimizeForType, process, promote, promoteChildren, resetLocalStaticProperties, restoreParentPointers, setEvaluationMethod, setFiltered, setFlattened, setLocation, setParentExpression, setPostureAndSweep, setRetainedStaticContext, setRetainedStaticContextLocally, setStaticProperty, simplify, simplifyChildren, staticTypeCheck, suppressValidation, toStreamingPattern, typeCheckChildren, typeError, unordered

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

CurrentItemExpression

public CurrentItemExpression()

Method Detail

getErrorCodeForUndefinedContext

protected String getErrorCodeForUndefinedContext()

Get the error code for use when there is no context item

Overrides:

getErrorCodeForUndefinedContext in class ContextItemExpression

Returns:

the string "XTDE1360"

getExpressionCompiler

public ExpressionCompiler getExpressionCompiler()

Return the compiler of the CurrentItem expression

Overrides:

getExpressionCompiler in class ContextItemExpression

Returns:

the relevant ExpressionCompiler