001/* ***** BEGIN LICENSE BLOCK *****
002 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
003 *
004 * The contents of this file are subject to the Mozilla Public License Version
005 * 1.1 (the "License"); you may not use this file except in compliance with
006 * the License. You may obtain a copy of the License at
007 * http://www.mozilla.org/MPL/
008 *
009 * Software distributed under the License is distributed on an "AS IS" basis,
010 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
011 * for the specific language governing rights and limitations under the
012 * License.
013 *
014 * The Original Code is part of dcm4che, an implementation of DICOM(TM) in
015 * Java(TM), hosted at https://github.com/gunterze/dcm4che.
016 *
017 * The Initial Developer of the Original Code is
018 * Agfa Healthcare.
019 * Portions created by the Initial Developer are Copyright (C) 2011
020 * the Initial Developer. All Rights Reserved.
021 *
022 * Contributor(s):
023 * See @authors listed below
024 *
025 * Alternatively, the contents of this file may be used under the terms of
026 * either the GNU General Public License Version 2 or later (the "GPL"), or
027 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
028 * in which case the provisions of the GPL or the LGPL are applicable instead
029 * of those above. If you wish to allow use of your version of this file only
030 * under the terms of either the GPL or the LGPL, and not to allow others to
031 * use your version of this file under the terms of the MPL, indicate your
032 * decision by deleting the provisions above and replace them with the notice
033 * and other provisions required by the GPL or the LGPL. If you do not delete
034 * the provisions above, a recipient may use your version of this file under
035 * the terms of any one of the MPL, the GPL or the LGPL.
036 *
037 * ***** END LICENSE BLOCK ***** */
038
039package org.dcm4che3.data;
040
041import java.util.ServiceLoader;
042
043import org.dcm4che3.data.StandardElementDictionary;
044
045public abstract class ElementDictionary {
046    private static final ServiceLoader<ElementDictionary> loader =
047            ServiceLoader.load(ElementDictionary.class);
048    private final String privateCreator;
049    private final Class<?> tagClass;
050
051    protected ElementDictionary(String privateCreator, Class<?> tagClass) {
052        this.privateCreator = privateCreator;
053        this.tagClass = tagClass;
054    }
055
056    public static ElementDictionary getStandardElementDictionary() {
057        return StandardElementDictionary.INSTANCE;
058    }
059
060    public static ElementDictionary getElementDictionary(
061            String privateCreator) {
062        if (privateCreator != null)
063            synchronized (loader) {
064                for (ElementDictionary dict : loader)
065                    if (privateCreator.equals(dict.getPrivateCreator()))
066                        return dict;
067            }
068        return getStandardElementDictionary();
069    }
070
071    public static void reload() {
072        synchronized (loader) {
073            loader.reload();
074        }
075    }
076
077    public static VR vrOf(int tag, String privateCreator) {
078        return getElementDictionary(privateCreator).vrOf(tag);
079    }
080
081    public static String keywordOf(int tag, String privateCreator) {
082        return getElementDictionary(privateCreator).keywordOf(tag);
083    }
084
085    public static int tagForKeyword(String keyword, String privateCreatorID) {
086        return getElementDictionary(privateCreatorID).tagForKeyword(keyword);
087    }
088
089    public final String getPrivateCreator() {
090        return privateCreator;
091    }
092
093    public Class<?> getTagClass() {
094        return tagClass;
095    }
096
097    public abstract VR vrOf(int tag);
098
099    public abstract String keywordOf(int tag);
100
101    public int tmTagOf(int daTag) {
102        return 0;
103    }
104
105    public int daTagOf(int tmTag) {
106        return 0;
107    }
108
109    public int tagForKeyword(String keyword) {
110        if (tagClass != null)
111            try {
112                return tagClass.getField(keyword).getInt(null);
113            } catch (Exception ignore) { }
114        return -1;
115    }
116}