org.basex.query.xquery.path
Class Step

java.lang.Object
  org.basex.query.xquery.expr.Expr
      org.basex.query.xquery.expr.Arr
          org.basex.query.xquery.path.Step

public final class Step
extends Arr

Path expression.

Author:

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

Field Summary

Axis	axis Axis.
Test	test Node test.

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

list

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

type

Constructor Summary

Step(Axis a, Test t, Expr[] p)
Constructor.

Method Summary

Item	eval(XQContext ctx) Evaluates the expression and returns the resulting item.
java.lang.String	info() Returns a string description of the expression.
boolean	simple(Axis ax) Checks if this is a simple axis (node test, no predicates).
java.lang.String	toString()

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

comp

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

Field Detail

axis

public Axis axis

Axis.

test

public Test test

Node test.

Constructor Detail

Step

public Step(Axis a,
            Test t,
            Expr[] p)

Constructor.

Parameters:

a - axis

t - node test

p - predicates

Method Detail

eval

public Item eval(XQContext ctx)
          throws XQException

Description copied from class: Expr

Evaluates the expression and returns the resulting item.

Specified by:

eval in class Expr

Parameters:

ctx - query context

Returns:

resulting item

Throws:

XQException - evaluation exception

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

simple

public boolean simple(Axis ax)

Checks if this is a simple axis (node test, no predicates).

Parameters:

ax - axis to be checked

Returns:

result of check

toString

public java.lang.String toString()

Specified by:

toString in class Expr