1 /*
   2  * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.sun.xml.internal.bind.v2.runtime.unmarshaller;
  27 
  28 import java.util.HashMap;
  29 import java.util.concurrent.Callable;
  30 
  31 import javax.xml.bind.ValidationEventHandler;
  32 
  33 import com.sun.xml.internal.bind.IDResolver;
  34 
  35 import org.xml.sax.SAXException;
  36 
  37 /**
  38  * Default implementation of {@link IDResolver}.
  39  *
  40  * @author Kohsuke Kawaguchi
  41  */
  42 final class DefaultIDResolver extends IDResolver {
  43     /** Records ID->Object map. */
  44     private HashMap<String,Object> idmap = null;
  45 
  46     @Override
  47     public void startDocument(ValidationEventHandler eventHandler) throws SAXException {
  48         if(idmap!=null)
  49             idmap.clear();
  50     }
  51 
  52     @Override
  53     public void bind(String id, Object obj) {
  54         if(idmap==null)     idmap = new HashMap<String,Object>();
  55         idmap.put(id,obj);
  56     }
  57 
  58     @Override
  59     public Callable resolve(final String id, Class targetType) {
  60         return new Callable() {
  61             public Object call() throws Exception {
  62                 if(idmap==null)     return null;
  63                 return idmap.get(id);
  64             }
  65         };
  66     }
  67 }