org.basex.query.xpath.locpath
Class Step

java.lang.Object
  org.basex.query.xpath.locpath.Step

Direct Known Subclasses:

StepAnc, StepAncOrSelf, StepAttr, StepDesc, StepDescOrSelf, StepFoll, StepFollSibl, StepParent, StepPrec, StepPrecSibl, StepSelf

public abstract class Step
extends java.lang.Object

Single Location Step.

Author:

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

Field Summary

Axis	axis Axis.
Preds	preds Predicate array.
Test	test Node test.

Constructor Summary

Step()

Method Summary

boolean	sameAs(Step step) Checks location steps for equality.
boolean	simple(Axis ax) Checks if this is a simple axis (node test, no predicates).
int	simpleName(Axis ax, boolean name) Checks if this is a simple name axis (no predicates).
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

axis

public Axis axis

Axis.

preds

public Preds preds

Predicate array.

test

public Test test

Node test.

Constructor Detail

Step

public Step()

Method Detail

sameAs

public final boolean sameAs(Step step)

Checks location steps for equality.

Parameters:

step - location step

Returns:

false if no Position predicate

simple

public final 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

simpleName

public final int simpleName(Axis ax,
                            boolean name)

Checks if this is a simple name axis (no predicates).

Parameters:

ax - axis to be checked

name - name reference needed

Returns:

name id or Integer.MIN_VALUE if test was negative

toString

public final java.lang.String toString()

Overrides:

toString in class java.lang.Object