org.basex.query.xquery.expr
Class Let

java.lang.Object
  org.basex.query.xquery.expr.Expr
      org.basex.query.xquery.expr.ForLet
          org.basex.query.xquery.expr.Let

public final class Let
extends ForLet

Let Clause.

Author:

Workgroup DBIS, University of Konstanz 2005-07, ISC License, Christian Gruen

Field Summary

Fields inherited from class org.basex.query.xquery.expr.Expr

type

Constructor Summary

Let(Expr e, Var v)
Constructor.

Method Summary

Expr	comp(XQContext ctx) Optimizes and compiles the expression tree.
org.basex.query.xquery.expr.ForLet.ForLetIterator	fliter() Returns an iterator.
java.lang.String	info() Returns a string description of the expression.
java.lang.String	toString()

Methods inherited from class org.basex.query.xquery.expr.ForLet

eval

Methods inherited from class org.basex.query.xquery.expr.Expr

cls, d, e, i, n, node, s, size, str, u

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Let

public Let(Expr e,
           Var v)
    throws XQException

Constructor.

Parameters:

e - variable input

v - variable

Throws:

XQException - xquery exception

Method Detail

comp

public Expr comp(XQContext ctx)
          throws XQException

Description copied from class: Expr

Optimizes and compiles the expression tree.

Specified by:

comp in class Expr

Parameters:

ctx - query context

Returns:

optimized Expression

Throws:

XQException - evaluation exception

fliter

public org.basex.query.xquery.expr.ForLet.ForLetIterator fliter()

Description copied from class: ForLet

Returns an iterator.

Returns:

iterator

info

public java.lang.String info()

Description copied from class: Expr

Returns a string description of the expression. Contrary to the Expr.toString() method, the current expressions aren't included in the output.

Specified by:

info in class Expr

Returns:

result of check

toString

public java.lang.String toString()

Specified by:

toString in class Expr