Examples of org.apache.xerces.xni.grammars.Grammar

org.apache.xerces.xni.grammars.Grammar
A generic grammar for use in validating XML documents. The Grammar object stores the validation information in a compiled form. Specific subclasses extend this class and "populate" the grammar by compiling the specific syntax (DTD, Schema, etc) into the data structures used by this object.
Note: The Grammar object is not useful as a generic grammar access or query object. In other words, you cannot round-trip specific grammar syntaxes with the compiled grammar information in the Grammar object. You can create equivalent validation rules in your choice of grammar syntax but there is no guarantee that the input and output will be the same.
Right now, this class is largely a shell; eventually, it will be enriched by having more expressive methods added.
will be moved from dtd.Grammar here. @author Jeffrey Rodriguez, IBM @author Eric Ye, IBM @author Andy Clark, IBM @author Neil Graham, IBM @version $Id: Grammar.java 319806 2004-02-24 23:15:58Z mrglavas $

        // retrieve a particular grammar.
        // REVISIT:  does this need to be synchronized since it's just reading?
        // @param gDesc description of the grammar to be retrieved
        // @return Grammar corresponding to gDesc, or null if none exists.
        public Grammar retrieveGrammar(XMLGrammarDescription gDesc) {
            Grammar g = super.retrieveGrammar(gDesc);
            if(g != null) return g;
            return fGrammarPool.retrieveGrammar(gDesc);
        } // retrieveGrammar(XMLGrammarDesc):  Grammar

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     * 
     * @param namespace Target namespace.
     */
    public Grammar removeGrammarNS(String namespace) {
        if(namespace == null) {
            Grammar tempGrammar = fNoNSGrammar;
            fNoNSGrammar = null;
            return tempGrammar;
        } else if (fGrammarsNS.contains(namespace)) {
            return (Grammar)fGrammarsNS.remove(namespace);
        }

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         *
         * @param gDesc Description of the grammar to be retrieved
         * @return      Grammar corresponding to gDesc, or null if none exists.
         */
        public Grammar retrieveGrammar(XMLGrammarDescription gDesc) {
            Grammar g = super.retrieveGrammar(gDesc);
            if(g != null) return g;
            return fGrammarPool.retrieveGrammar(gDesc);
        } // retrieveGrammar(XMLGrammarDesc):  Grammar

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    /* (non-Javadoc)
     * @see org.apache.xerces.xs.XSLoader#load(org.w3c.dom.ls.LSInput)
     */
    public XSModel load(LSInput is) {
        try {
            Grammar g = loadGrammar(dom2xmlInputSource(is));
            return ((XSGrammar) g).toXSModel();
        } catch (Exception e) {
            if (fErrorHandler != null) {
                DOMErrorImpl error = new DOMErrorImpl();
                error.fException = e;

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    /* (non-Javadoc)
     * @see org.apache.xerces.xs.XSLoader#loadURI(java.lang.String)
     */
    public XSModel loadURI(String uri) {
      try {
      Grammar g = loadGrammar(new XMLInputSource(null, uri, null));
      return ((XSGrammar)g).toXSModel();
      }
      catch (Exception e){
      if (fErrorHandler != null) {
        DOMErrorImpl error = new DOMErrorImpl();

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    public void cacheGrammars(String grammarType, Grammar[] grammars) {
        if(!fPoolIsLocked) {
            for (int i = 0; i < grammars.length; i++) {
                if(DEBUG) {
                    System.out.println("CACHED GRAMMAR " + (i+1) ) ;
                    Grammar temp = grammars[i] ;
                    //print(temp.getGrammarDescription());
                }
                putGrammar(grammars[i]);
            }
        }

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                        prev.next = entry.next;
            }
            else {
                fGrammars[index] = entry.next;
            }
                Grammar tempGrammar = entry.grammar;
                entry.grammar = null;
                fGrammarCount--;
                return tempGrammar;
            }
        }

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        }
        else
        {
          if ((localEntry.hash != i) || (!equals(localEntry.desc, paramXMLGrammarDescription)))
            continue;
          Grammar localGrammar2 = localGrammar1;
          return localGrammar2;
        }
      }
      Grammar localGrammar1 = null;
      return localGrammar1;
    }
  }

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        if ((localEntry.hash != i) || (!equals(localEntry.desc, paramXMLGrammarDescription)))
          continue;
        localGrammar = removeEntry(localEntry);
        return localGrammar;
      }
      Grammar localGrammar = null;
      return localGrammar;
    }
  }

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      clean();
      int i = hashCode(paramXMLGrammarDescription);
      int j = (i & 0x7FFFFFFF) % this.fGrammars.length;
      for (Entry localEntry = this.fGrammars[j]; localEntry != null; localEntry = localEntry.next)
      {
        Grammar localGrammar = (Grammar)localEntry.grammar.get();
        if (localGrammar == null)
        {
          removeEntry(localEntry);
        }
        else

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