aoqi@0: /*
aoqi@0:  * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.  Oracle designates this
aoqi@0:  * particular file as subject to the "Classpath" exception as provided
aoqi@0:  * by Oracle in the LICENSE file that accompanied this code.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: package com.sun.xml.internal.bind.v2.runtime;
aoqi@0: 
aoqi@0: import java.util.HashMap;
aoqi@0: import java.util.HashSet;
aoqi@0: import java.util.Map;
aoqi@0: import java.util.Set;
aoqi@0: 
aoqi@0: import javax.xml.namespace.QName;
aoqi@0: 
aoqi@0: import com.sun.xml.internal.bind.v2.util.QNameMap;
aoqi@0: 
aoqi@0: /**
aoqi@0:  * Creates {@link Name}s and assign index numbers to them.
aoqi@0:  *
aoqi@0:  * <p>
aoqi@0:  * During this process, this class also finds out which namespace URIs
aoqi@0:  * are statically known to be un-bindable as the default namespace.
aoqi@0:  * Those are the namespace URIs that are used by attribute names.
aoqi@0:  *
aoqi@0:  * @author Kohsuke Kawaguchi
aoqi@0:  */
aoqi@0: @SuppressWarnings({"StringEquality"})
aoqi@0: public final class NameBuilder {
aoqi@0:     private Map<String,Integer> uriIndexMap = new HashMap<String, Integer>();
aoqi@0:     private Set<String> nonDefaultableNsUris = new HashSet<String>();
aoqi@0:     private Map<String,Integer> localNameIndexMap = new HashMap<String, Integer>();
aoqi@0:     private QNameMap<Integer> elementQNameIndexMap = new QNameMap<Integer>();
aoqi@0:     private QNameMap<Integer> attributeQNameIndexMap = new QNameMap<Integer>();
aoqi@0: 
aoqi@0:     public Name createElementName(QName name) {
aoqi@0:         return createElementName(name.getNamespaceURI(),name.getLocalPart());
aoqi@0:     }
aoqi@0: 
aoqi@0:     public Name createElementName(String nsUri, String localName) {
aoqi@0:         return createName(nsUri, localName, false, elementQNameIndexMap);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public Name createAttributeName(QName name) {
aoqi@0:         return createAttributeName(name.getNamespaceURI(),name.getLocalPart());
aoqi@0:     }
aoqi@0: 
aoqi@0:     public Name createAttributeName(String nsUri, String localName) {
aoqi@0:         assert nsUri.intern()==nsUri;
aoqi@0:         assert localName.intern()==localName;
aoqi@0: 
aoqi@0:         if(nsUri.length()==0)
aoqi@0:             return new Name(
aoqi@0:                     allocIndex(attributeQNameIndexMap,"",localName),
aoqi@0:                     -1,
aoqi@0:                     nsUri,
aoqi@0:                     allocIndex(localNameIndexMap,localName),
aoqi@0:                     localName,
aoqi@0:                     true);
aoqi@0:         else {
aoqi@0:             nonDefaultableNsUris.add(nsUri);
aoqi@0:             return createName(nsUri,localName, true, attributeQNameIndexMap);
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     private Name createName(String nsUri, String localName, boolean isAttribute, QNameMap<Integer> map) {
aoqi@0:         assert nsUri.intern()==nsUri;
aoqi@0:         assert localName.intern()==localName;
aoqi@0: 
aoqi@0:         return new Name(
aoqi@0:                 allocIndex(map,nsUri,localName),
aoqi@0:                 allocIndex(uriIndexMap,nsUri),
aoqi@0:                 nsUri,
aoqi@0:                 allocIndex(localNameIndexMap,localName),
aoqi@0:                 localName,
aoqi@0:                 isAttribute );
aoqi@0:     }
aoqi@0: 
aoqi@0:     private int allocIndex(Map<String,Integer> map, String str) {
aoqi@0:         Integer i = map.get(str);
aoqi@0:         if(i==null) {
aoqi@0:             i = map.size();
aoqi@0:             map.put(str,i);
aoqi@0:         }
aoqi@0:         return i;
aoqi@0:     }
aoqi@0: 
aoqi@0:     private int allocIndex(QNameMap<Integer> map, String nsUri, String localName) {
aoqi@0:         Integer i = map.get(nsUri,localName);
aoqi@0:         if(i==null) {
aoqi@0:             i = map.size();
aoqi@0:             map.put(nsUri,localName,i);
aoqi@0:         }
aoqi@0:         return i;
aoqi@0:     }
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Wraps up everything and creates {@link NameList}.
aoqi@0:      */
aoqi@0:     public NameList conclude() {
aoqi@0:         boolean[] nsUriCannotBeDefaulted = new boolean[uriIndexMap.size()];
aoqi@0:         for (Map.Entry<String,Integer> e : uriIndexMap.entrySet()) {
aoqi@0:             nsUriCannotBeDefaulted[e.getValue()] = nonDefaultableNsUris.contains(e.getKey());
aoqi@0:         }
aoqi@0: 
aoqi@0:         NameList r = new NameList(
aoqi@0:                 list(uriIndexMap),
aoqi@0:                 nsUriCannotBeDefaulted,
aoqi@0:                 list(localNameIndexMap),
aoqi@0:                 elementQNameIndexMap.size(),
aoqi@0:                 attributeQNameIndexMap.size() );
aoqi@0:         // delete them so that the create method can never be called again
aoqi@0:         uriIndexMap = null;
aoqi@0:         localNameIndexMap = null;
aoqi@0:         return r;
aoqi@0:     }
aoqi@0: 
aoqi@0:     private String[] list(Map<String, Integer> map) {
aoqi@0:         String[] r = new String[map.size()];
aoqi@0:         for (Map.Entry<String, Integer> e : map.entrySet())
aoqi@0:             r[e.getValue()] = e.getKey();
aoqi@0:         return r;
aoqi@0:     }
aoqi@0: }