org.exist.xquery
Class LetExpr

java.lang.Object
  org.exist.xquery.AbstractExpression
      org.exist.xquery.BindingExpression
          org.exist.xquery.LetExpr

All Implemented Interfaces:

Expression

public class LetExpr

extends BindingExpression

Implements an XQuery let-expression.

Author:

Wolfgang Meier

Field Summary

Fields inherited from class org.exist.xquery.BindingExpression

inputSequence, LOG, orderSpecs, POSITIONAL_VAR_TYPE, returnExpr, sequenceType, varName, whereExpr

Fields inherited from class org.exist.xquery.AbstractExpression

astNode, context, contextDocSet, contextId

Fields inherited from interface org.exist.xquery.Expression

EXPRESSION_ID_INVALID, IGNORE_CONTEXT, IN_PREDICATE, IN_UPDATE, IN_WHERE_CLAUSE, NO_CONTEXT_ID, SINGLE_STEP_EXECUTION

Constructor Summary

LetExpr(XQueryContext context)

Method Summary

void	analyze(AnalyzeContextInfo contextInfo, OrderSpec[] orderBy)
void	dump(ExpressionDumper dumper) Write a diagnostic dump of the expression to the passed ExpressionDumper.
Sequence	eval(Sequence contextSequence, Item contextItem, Sequence resultSequence)
java.lang.String	toString()

Methods inherited from class org.exist.xquery.BindingExpression

analyze, applyWhereExpression, checkOrderSpecs, clearContext, eval, preselect, resetState, returnsType, setContext, setInputSequence, setOrderSpecs, setReturnExpression, setSequenceType, setVariable, setWhereExpression

Methods inherited from class org.exist.xquery.AbstractExpression

eval, getASTNode, getCardinality, getContextDocSet, getContextId, getDependencies, getExpressionId, setASTNode, setContextDocSet, setPrimaryAxis

Methods inherited from class java.lang.Object

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

Constructor Detail

LetExpr

public LetExpr(XQueryContext context)

Method Detail

analyze

public void analyze(AnalyzeContextInfo contextInfo,
                    OrderSpec[] orderBy)
             throws XPathException

Specified by:

analyze in class BindingExpression

Throws:

XPathException

eval

public Sequence eval(Sequence contextSequence,
                     Item contextItem,
                     Sequence resultSequence)
              throws XPathException

Specified by:

eval in class BindingExpression

Throws:

XPathException

dump

public void dump(ExpressionDumper dumper)

Description copied from interface: Expression

Write a diagnostic dump of the expression to the passed ExpressionDumper.

Parameters:

dumper - the expression dumper to write to

toString

public java.lang.String toString()