xsdsimpletypetraverser.java

java1.6众多例子参考

/*
 * Copyright 2001-2005 The Apache Software Foundation.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.sun.org.apache.xerces.internal.impl.xs.traversers;

import java.util.Vector;

import com.sun.org.apache.xerces.internal.impl.dv.InvalidDatatypeFacetException;
import com.sun.org.apache.xerces.internal.impl.dv.SchemaDVFactory;
import com.sun.org.apache.xerces.internal.impl.dv.XSSimpleType;
import com.sun.org.apache.xerces.internal.impl.dv.xs.SchemaDVFactoryImpl;
import com.sun.org.apache.xerces.internal.impl.dv.xs.XSSimpleTypeDecl;
import com.sun.org.apache.xerces.internal.impl.xs.SchemaGrammar;
import com.sun.org.apache.xerces.internal.impl.xs.SchemaSymbols;
import com.sun.org.apache.xerces.internal.impl.xs.XSAnnotationImpl;
import com.sun.org.apache.xerces.internal.impl.xs.util.XInt;
import com.sun.org.apache.xerces.internal.impl.xs.util.XSObjectListImpl;
import com.sun.org.apache.xerces.internal.util.DOMUtil;
import com.sun.org.apache.xerces.internal.xni.QName;
import com.sun.org.apache.xerces.internal.xs.XSConstants;
import com.sun.org.apache.xerces.internal.xs.XSObjectList;
import com.sun.org.apache.xerces.internal.xs.XSTypeDefinition;
import org.w3c.dom.Element;

/**
 * The simple type definition schema component traverser.
 *
 * <simpleType
 *   final = (#all | (list | union | restriction))
 *   id = ID
 *   name = NCName
 *   {any attributes with non-schema namespace . . .}>
 *   Content: (annotation?, (restriction | list | union))
 * </simpleType>
 *
 * <restriction
 *   base = QName
 *   id = ID
 *   {any attributes with non-schema namespace . . .}>
 *   Content: (annotation?, (simpleType?, (minExclusive | minInclusive | maxExclusive | maxInclusive | totalDigits | fractionDigits | length | minLength | maxLength | enumeration | whiteSpace | pattern)*))
 * </restriction>
 *
 * <list
 *   id = ID
 *   itemType = QName
 *   {any attributes with non-schema namespace . . .}>
 *   Content: (annotation?, (simpleType?))
 * </list>
 *
 * <union
 *   id = ID
 *   memberTypes = List of QName
 *   {any attributes with non-schema namespace . . .}>
 *   Content: (annotation?, (simpleType*))
 * </union>
 *
 * @xerces.internal 
 *
 * @author Elena Litani, IBM
 * @author Neeraj Bajaj, Sun Microsystems, Inc.
 * @author Sandy Gao, IBM
 * 
 * @version $Id: XSDSimpleTypeTraverser.java,v 1.2.6.1 2005/09/09 07:25:08 sunithareddy Exp $
 */
class XSDSimpleTypeTraverser extends XSDAbstractTraverser {
    
    // the factory used to query/create simple types
    private final SchemaDVFactory schemaFactory = SchemaDVFactory.getInstance();
    
    // whether the type being parsed is a S4S built-in type.
    private boolean fIsBuiltIn = false;
    
    XSDSimpleTypeTraverser (XSDHandler handler,
            XSAttributeChecker gAttrCheck) {
        super(handler, gAttrCheck);
        if (schemaFactory instanceof SchemaDVFactoryImpl) {
            ((SchemaDVFactoryImpl)schemaFactory).setDeclPool(handler.fDeclPool);
        }
    }
    
    //return qualified name of simpleType or empty string if error occured
    XSSimpleType traverseGlobal(Element elmNode,
            XSDocumentInfo schemaDoc,
            SchemaGrammar grammar) {
        
        // General Attribute Checking
        Object[] attrValues = fAttrChecker.checkAttributes(elmNode, true, schemaDoc);
        String nameAtt = (String)attrValues[XSAttributeChecker.ATTIDX_NAME];
        XSSimpleType type = traverseSimpleTypeDecl(elmNode, attrValues, schemaDoc, grammar);
        fAttrChecker.returnAttrArray(attrValues, schemaDoc);
        
        // if it's a global type without a name, return null
        if (nameAtt == null) {
            reportSchemaError("s4s-att-must-appear", new Object[]{SchemaSymbols.ELT_SIMPLETYPE, SchemaSymbols.ATT_NAME}, elmNode);
            type = null;
        }
        
        // don't add global components without name to the grammar
        if (type != null) {
            grammar.addGlobalTypeDecl(type);
        }
        
        return type;
    }
    
    XSSimpleType traverseLocal(Element elmNode,
            XSDocumentInfo schemaDoc,
            SchemaGrammar grammar) {
        
        // General Attribute Checking
        Object[] attrValues = fAttrChecker.checkAttributes(elmNode, false, schemaDoc);
        String name = genAnonTypeName(elmNode);
        XSSimpleType type = getSimpleType (name, elmNode, attrValues, schemaDoc, grammar);
        if (type instanceof XSSimpleTypeDecl) {
            ((XSSimpleTypeDecl)type).setAnonymous(true);
        }
        fAttrChecker.returnAttrArray(attrValues, schemaDoc);
        
        return type;
    }
    
    private XSSimpleType traverseSimpleTypeDecl(Element simpleTypeDecl,
            Object[] attrValues,
            XSDocumentInfo schemaDoc,
            SchemaGrammar grammar) {
        
        // get name and final values
        String name = (String)attrValues[XSAttributeChecker.ATTIDX_NAME];
        return getSimpleType(name, simpleTypeDecl, attrValues, schemaDoc, grammar);
    }
    
    /*
     * Generate a name for an anonymous type
     */
    private String genAnonTypeName(Element simpleTypeDecl) {
        
        // Generate a unique name for the anonymous type by concatenating together the
        // names of parent nodes
        // The name is quite good for debugging/error purposes, but we may want to
        // revisit how this is done for performance reasons (LM).
        StringBuffer typeName = new StringBuffer("#AnonType_");
        Element node = DOMUtil.getParent(simpleTypeDecl);
        while (node != null && (node != DOMUtil.getRoot(DOMUtil.getDocument(node)))) {
            typeName.append(node.getAttribute(SchemaSymbols.ATT_NAME));
            node = DOMUtil.getParent(node);
        }
        return typeName.toString();
    }

    /**
     * @param name
     * @param simpleTypeDecl
     * @param attrValues
     * @param schemaDoc
     * @param grammar
     * @return
     */
    private XSSimpleType getSimpleType(String name, Element simpleTypeDecl, Object[] attrValues, XSDocumentInfo schemaDoc, SchemaGrammar grammar) {
        XInt finalAttr = (XInt)attrValues[XSAttributeChecker.ATTIDX_FINAL];
        int finalProperty = finalAttr == null ? schemaDoc.fFinalDefault : finalAttr.intValue();
        // annotation?,(list|restriction|union)
        Element child = DOMUtil.getFirstChildElement(simpleTypeDecl);
        XSAnnotationImpl [] annotations = null;
        if (child != null && DOMUtil.getLocalName(child).equals(SchemaSymbols.ELT_ANNOTATION)) {
            XSAnnotationImpl annotation = traverseAnnotationDecl(child, attrValues, false, schemaDoc);
            if (annotation != null)
                annotations = new XSAnnotationImpl [] {annotation};
            child = DOMUtil.getNextSiblingElement(child);
        }
        else {
            String text = DOMUtil.getSyntheticAnnotation(simpleTypeDecl);
            if (text != null) {
                XSAnnotationImpl annotation = traverseSyntheticAnnotation(simpleTypeDecl, text, attrValues, false, schemaDoc);
                annotations = new XSAnnotationImpl[] {annotation};
            }
        }
        // (list|restriction|union)
        if (child == null) {
            reportSchemaError("s4s-elt-must-match.2", new Object[]{SchemaSymbols.ELT_SIMPLETYPE, "(annotation?, (restriction | list | union))"}, simpleTypeDecl);
            return errorType(name, schemaDoc.fTargetNamespace, XSConstants.DERIVATION_RESTRICTION);
        }
        // derivation type: restriction/list/union
        String varietyProperty = DOMUtil.getLocalName(child);
        short refType = XSConstants.DERIVATION_RESTRICTION;
        boolean restriction = false, list = false, union = false;
        if (varietyProperty.equals(SchemaSymbols.ELT_RESTRICTION)) {
            refType = XSConstants.DERIVATION_RESTRICTION;
            restriction = true;
        }
        else if (varietyProperty.equals(SchemaSymbols.ELT_LIST)) {
            refType = XSConstants.DERIVATION_LIST;
            list = true;
        }
        else if (varietyProperty.equals(SchemaSymbols.ELT_UNION)) {
            refType = XSConstants.DERIVATION_UNION;
            union = true;
        }
        else {
            reportSchemaError("s4s-elt-must-match.1", new Object[]{SchemaSymbols.ELT_SIMPLETYPE, "(annotation?, (restriction | list | union))", varietyProperty}, simpleTypeDecl);
            return errorType(name, schemaDoc.fTargetNamespace, XSConstants.DERIVATION_RESTRICTION);
        }
        // nothing should follow this element
        Element nextChild = DOMUtil.getNextSiblingElement(child);
        if (nextChild != null) {
            reportSchemaError("s4s-elt-must-match.1", new Object[]{SchemaSymbols.ELT_SIMPLETYPE, "(annotation?, (restriction | list | union))", DOMUtil.getLocalName(nextChild)}, nextChild);
        }
        // General Attribute Checking: get base/item/member types
        Object[] contentAttrs = fAttrChecker.checkAttributes(child, false, schemaDoc);
        QName baseTypeName = (QName)contentAttrs[restriction ?
                XSAttributeChecker.ATTIDX_BASE :
                    XSAttributeChecker.ATTIDX_ITEMTYPE];
        Vector memberTypes = (Vector)contentAttrs[XSAttributeChecker.ATTIDX_MEMBERTYPES];
        //content = {annotation?,simpleType?...}
        Element content = DOMUtil.getFirstChildElement(child);
        //check content (annotation?, ...)
        if (content != null && DOMUtil.getLocalName(content).equals(SchemaSymbols.ELT_ANNOTATION)) {
            XSAnnotationImpl annotation = traverseAnnotationDecl(content, contentAttrs, false, schemaDoc);
            if (annotation != null ) {
                if(annotations == null) {
                    annotations = new XSAnnotationImpl [] {annotation};
                }
                else {
                    XSAnnotationImpl [] tempArray = new XSAnnotationImpl[2];
                    tempArray[0] = annotations[0];
                    annotations = tempArray;
                    annotations[1] = annotation;
                }
            }
            content = DOMUtil.getNextSiblingElement(content);
        }
        else {
            String text = DOMUtil.getSyntheticAnnotation(child);
            if (text != null) {
                XSAnnotationImpl annotation = traverseSyntheticAnnotation(child, text, contentAttrs, false, schemaDoc);
                if (annotations == null) {