xsmodelimpl.java

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                    break;
                case XSConstants.ATTRIBUTE_GROUP:
                    tables[i] = fGrammarList[i].fGlobalAttrGrpDecls;
                    break;
                case XSConstants.MODEL_GROUP_DEFINITION:
                    tables[i] = fGrammarList[i].fGlobalGroupDecls;
                    break;
                case XSConstants.NOTATION_DECLARATION:
                    tables[i] = fGrammarList[i].fGlobalNotationDecls;
                    break;
                }
            }
            // for complex/simple types, create a special implementation,
            // which take specific types out of the hash table
            if (objectType == XSTypeDefinition.COMPLEX_TYPE ||
                objectType == XSTypeDefinition.SIMPLE_TYPE) {
                fGlobalComponents[objectType] = new XSNamedMap4Types(fNamespaces, tables, fGrammarCount, objectType);
            }
            else {
                fGlobalComponents[objectType] = new XSNamedMapImpl(fNamespaces, tables, fGrammarCount);
            }
        }
        
        return fGlobalComponents[objectType];
    }

    /**
     * Convenience method. Returns a list of top-level component declarations 
     * that are defined within the specified namespace, i.e. element 
     * declarations, attribute declarations, etc. 
     * @param objectType The type of the declaration, i.e. 
     *   <code>ELEMENT_DECLARATION</code>.
     * @param namespace The namespace to which the declaration belongs or 
     *   <code>null</code> (for components with no target namespace).
     * @return  A list of top-level definitions of the specified type in 
     *   <code>objectType</code> and defined in the specified 
     *   <code>namespace</code> or an empty <code>XSNamedMap</code>. 
     */
    public synchronized XSNamedMap getComponentsByNamespace(short objectType,
                                                            String namespace) {
        if (objectType <= 0 || objectType > MAX_COMP_IDX ||
            !GLOBAL_COMP[objectType]) {
            return XSNamedMapImpl.EMPTY_MAP;
        }
        
        // try to find the grammar
        int i = 0;
        if (namespace != null) {
            for (; i < fGrammarCount; ++i) {
                if (namespace.equals(fNamespaces[i]))
                    break;
            }
        }
        else {
            for (; i < fGrammarCount; ++i) {
                if (fNamespaces[i] == null)
                    break; 
            }
        }
        if (i == fGrammarCount)
            return XSNamedMapImpl.EMPTY_MAP;
        
        // get the hashtable for this type of components
        if (fNSComponents[i][objectType] == null) {
            SymbolHash table = null;
            switch (objectType) {
            case XSConstants.TYPE_DEFINITION:
            case XSTypeDefinition.COMPLEX_TYPE:
            case XSTypeDefinition.SIMPLE_TYPE:
                table = fGrammarList[i].fGlobalTypeDecls;
                break;
            case XSConstants.ATTRIBUTE_DECLARATION:
                table = fGrammarList[i].fGlobalAttrDecls;
                break;
            case XSConstants.ELEMENT_DECLARATION:
                table = fGrammarList[i].fGlobalElemDecls;
                break;
            case XSConstants.ATTRIBUTE_GROUP:
                table = fGrammarList[i].fGlobalAttrGrpDecls;
                break;
            case XSConstants.MODEL_GROUP_DEFINITION:
                table = fGrammarList[i].fGlobalGroupDecls;
                break;
            case XSConstants.NOTATION_DECLARATION:
                table = fGrammarList[i].fGlobalNotationDecls;
                break;
            }
            
            // for complex/simple types, create a special implementation,
            // which take specific types out of the hash table
            if (objectType == XSTypeDefinition.COMPLEX_TYPE ||
                objectType == XSTypeDefinition.SIMPLE_TYPE) {
                fNSComponents[i][objectType] = new XSNamedMap4Types(namespace, table, objectType);
            }
            else {
                fNSComponents[i][objectType] = new XSNamedMapImpl(namespace, table);
            }
        }
        
        return fNSComponents[i][objectType];
    }

    /**
     * Convenience method. Returns a top-level simple or complex type
     * definition.
     * @param name The name of the definition.
     * @param namespace The namespace of the definition, otherwise null.
     * @return An <code>XSTypeDefinition</code> or null if such definition
     *   does not exist.
     */
    public XSTypeDefinition getTypeDefinition(String name,
                                              String namespace) {
        SchemaGrammar sg = (SchemaGrammar)fGrammarMap.get(null2EmptyString(namespace));
        if (sg == null)
            return null;
        return (XSTypeDefinition)sg.fGlobalTypeDecls.get(name);
    }

    /**
     * Convenience method. Returns a top-level attribute declaration.
     * @param name The name of the declaration.
     * @param namespace The namespace of the definition, otherwise null.
     * @return A top-level attribute declaration or null if such declaration
     *   does not exist.
     */
    public XSAttributeDeclaration getAttributeDeclaration(String name,
                                                   String namespace) {
        SchemaGrammar sg = (SchemaGrammar)fGrammarMap.get(null2EmptyString(namespace));
        if (sg == null)
            return null;
        return (XSAttributeDeclaration)sg.fGlobalAttrDecls.get(name);
    }

    /**
     * Convenience method. Returns a top-level element declaration.
     * @param name The name of the declaration.
     * @param namespace The namespace of the definition, otherwise null.
     * @return A top-level element declaration or null if such declaration
     *   does not exist.
     */
    public XSElementDeclaration getElementDeclaration(String name,
                                               String namespace) {
        SchemaGrammar sg = (SchemaGrammar)fGrammarMap.get(null2EmptyString(namespace));
        if (sg == null)
            return null;
        return (XSElementDeclaration)sg.fGlobalElemDecls.get(name);
    }

    /**
     * Convenience method. Returns a top-level attribute group definition.
     * @param name The name of the definition.
     * @param namespace The namespace of the definition, otherwise null.
     * @return A top-level attribute group definition or null if such
     *   definition does not exist.
     */
    public XSAttributeGroupDefinition getAttributeGroup(String name,
                                                        String namespace) {
        SchemaGrammar sg = (SchemaGrammar)fGrammarMap.get(null2EmptyString(namespace));
        if (sg == null)
            return null;
        return (XSAttributeGroupDefinition)sg.fGlobalAttrGrpDecls.get(name);
    }

    /**
     * Convenience method. Returns a top-level model group definition.
     *
     * @param name      The name of the definition.
     * @param namespace The namespace of the definition, otherwise null.
     * @return A top-level model group definition definition or null if such
     *         definition does not exist.
     */
    public XSModelGroupDefinition getModelGroupDefinition(String name,
                                                          String namespace) {
        SchemaGrammar sg = (SchemaGrammar)fGrammarMap.get(null2EmptyString(namespace));
        if (sg == null)
            return null;
        return (XSModelGroupDefinition)sg.fGlobalGroupDecls.get(name);
    }


    /**
     * @see com.sun.org.apache.xerces.internal.xs.XSModel#getNotationDeclaration(String, String)
     */
    public XSNotationDeclaration getNotationDeclaration(String name,
                                                 String namespace) {
        SchemaGrammar sg = (SchemaGrammar)fGrammarMap.get(null2EmptyString(namespace));
        if (sg == null)
            return null;
        return (XSNotationDeclaration)sg.fGlobalNotationDecls.get(name);
    }

    /**
     *  {annotations} A set of annotations.
     */
    public synchronized XSObjectList getAnnotations() {
        if(fAnnotations != null) 
            return fAnnotations;

        // do this in two passes to avoid inaccurate array size
        int totalAnnotations = 0;
        for (int i = 0; i < fGrammarCount; i++) {
            totalAnnotations += fGrammarList[i].fNumAnnotations;
        }
        XSAnnotationImpl [] annotations = new XSAnnotationImpl [totalAnnotations];
        int currPos = 0;
        for (int i = 0; i < fGrammarCount; i++) {
            SchemaGrammar currGrammar = fGrammarList[i];
            if (currGrammar.fNumAnnotations > 0) {
                System.arraycopy(currGrammar.fAnnotations, 0, annotations, currPos, currGrammar.fNumAnnotations);
                currPos += currGrammar.fNumAnnotations;
            }
        }
        fAnnotations = new XSObjectListImpl(annotations, annotations.length);
        return fAnnotations;
    }

    private static final String null2EmptyString(String str) {
        return str == null ? XMLSymbols.EMPTY_STRING : str;
    }
    
    /**
     * REVISIT: to expose identity constraints from XSModel.
     * For now, we only expose whether there are any IDCs.
     * We also need to add these methods to the public
     * XSModel interface.
     */
    public boolean hasIDConstraints() {
        return fHasIDC;
    }

    /**
     * REVISIT: to expose substitution group of a given element.
     * We need to add this to the XSModel interface.
     */
    public XSObjectList getSubstitutionGroup(XSElementDeclaration head) {
        return (XSObjectList)fSubGroupMap.get(head);
    }

} // class XSModelImpl