net.sf.saxon.expr
Class EagerLetExpression

java.lang.Object
  net.sf.saxon.expr.ComputedExpression
      net.sf.saxon.expr.Assignation
          net.sf.saxon.expr.LetExpression
              net.sf.saxon.expr.EagerLetExpression

All Implemented Interfaces:

Binding, Container, Expression, InstructionInfoProvider, java.io.Serializable, javax.xml.transform.SourceLocator, TailCallReturner

public class EagerLetExpression

extends LetExpression

An EagerLetExpression is the same as a LetExpression except that the variable is evaluated using eager evaluation rather than lazy evaluation. This is used when performing diagnostic tracing.

See Also:

Serialized Form

Field Summary

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

action, declaration, nameCode, sequence, slotNumber, variableName

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

locationId, staticProperties

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

EVALUATE_METHOD, ITERATE_METHOD, PROCESS_METHOD

Constructor Summary

EagerLetExpression()

Method Summary

protected ValueRepresentation

eval(XPathContext context) Evaluate the variable.

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

checkPermittedContents, computeCardinality, computeSpecialProperties, display, evaluateItem, getItemType, iterate, markTailFunctionCalls, optimize, process, processLeavingTail, promote, typeCheck

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

evaluateVariable, extendBindingList, getAction, getLocalSlotNumber, getRequiredSlots, getVariableDeclaration, getVariableFingerprint, getVariableName, getVariableNameCode, isAssignable, isGlobal, iterateSubExpressions, promoteWhereClause, setAction, setSequence, setSlotNumber, setVariableDeclaration, simplify, suppressValidation

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

EagerLetExpression

public EagerLetExpression()

Method Detail

eval

protected ValueRepresentation eval(XPathContext context)
                            throws XPathException

Evaluate the variable.

Overrides:

eval in class LetExpression

Throws:

XPathException