## org.apache.xerces.impl.xs
Class SubstitutionGroupHandler

    java.lang.Object
      org.apache.xerces.impl.xs.SubstitutionGroupHandler

public class SubstitutionGroupHandler
extends java.lang.Object

To store and validate information about substitutionGroup

Version:
  $Id: SubstitutionGroupHandler.java,v 1.14 2003/11/11 20:14:58 sandygao Exp $
Author:
  Sandy Gao, IBM

Constructor Summary
`SubstitutionGroupHandler(XSGrammarBucket grammarBucket)` Default constructor

Method Summary
`void` `addSubstitutionGroup(XSElementDecl[] elements)` add a list of substitution group information.
`XSElementDecl` `getMatchingElemDecl(org.apache.xerces.xni.QName element, XSElementDecl exemplar)`
`XSElementDecl[]` `getSubstitutionGroup(XSElementDecl element)` get all elements that can substitute the given element, according to the spec, we shouldn't consider the {block} constraints.
`boolean` `inSubstitutionGroup(XSElementDecl element, XSElementDecl exemplar)`
`void` `reset()` clear the internal registry of substitutionGroup information
`protected boolean` `substitutionGroupOK(XSElementDecl element, XSElementDecl exemplar, short blockingConstraint)`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### SubstitutionGroupHandler

    public SubstitutionGroupHandler(XSGrammarBucket grammarBucket)

  Default constructor

Method Detail

### getMatchingElemDecl

    public XSElementDecl getMatchingElemDecl(org.apache.xerces.xni.QName element,
                                             XSElementDecl exemplar)

### substitutionGroupOK

    protected boolean substitutionGroupOK(XSElementDecl element,
                                          XSElementDecl exemplar,
                                          short blockingConstraint)

### inSubstitutionGroup

    public boolean inSubstitutionGroup(XSElementDecl element,
                                       XSElementDecl exemplar)

### reset

    public void reset()

  clear the internal registry of substitutionGroup information

### addSubstitutionGroup

    public void addSubstitutionGroup(XSElementDecl[] elements)

  add a list of substitution group information.

### getSubstitutionGroup

    public XSElementDecl[] getSubstitutionGroup(XSElementDecl element)

  get all elements that can substitute the given element, according to the spec, we shouldn't consider the {block} constraints. from the spec, substitution group of a given element decl also contains the element itself. but the array returned from this method doesn't containt this element.

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