001 /*
002 * JBoss DNA (http://www.jboss.org/dna)
003 * See the COPYRIGHT.txt file distributed with this work for information
004 * regarding copyright ownership. Some portions may be licensed
005 * to Red Hat, Inc. under one or more contributor license agreements.
006 * See the AUTHORS.txt file in the distribution for a full listing of
007 * individual contributors.
008 *
009 * JBoss DNA is free software. Unless otherwise indicated, all code in JBoss DNA
010 * is licensed to you under the terms of the GNU Lesser General Public License as
011 * published by the Free Software Foundation; either version 2.1 of
012 * the License, or (at your option) any later version.
013 *
014 * JBoss DNA is distributed in the hope that it will be useful,
015 * but WITHOUT ANY WARRANTY; without even the implied warranty of
016 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
017 * Lesser General Public License for more details.
018 *
019 * You should have received a copy of the GNU Lesser General Public
020 * License along with this software; if not, write to the Free
021 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
022 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
023 */
024 package org.jboss.dna.connector.store.jpa.util;
025
026 import java.util.UUID;
027 import javax.persistence.EntityManager;
028 import org.jboss.dna.common.util.CheckArg;
029 import org.jboss.dna.connector.store.jpa.Model;
030
031 /**
032 * @author Randall Hauch
033 */
034 public class StoreOptions {
035
036 public static final String ROOT_NODE_UUID = "org.jboss.dna.store.rootNodeUuid";
037 public static final String VERSION = "org.jboss.dna.store.version";
038 public static final String MODEL = "org.jboss.dna.store.model";
039
040 private final EntityManager entityManager;
041
042 public StoreOptions( EntityManager manager ) {
043 CheckArg.isNotNull(manager, "manager");
044 this.entityManager = manager;
045 }
046
047 public UUID getRootNodeUuid() {
048 String value = getOption(ROOT_NODE_UUID);
049 return value != null ? UUID.fromString(value) : null;
050 }
051
052 public void setRootNodeUuid( UUID uuid ) {
053 CheckArg.isNotNull(uuid, "uuid");
054 setOption(ROOT_NODE_UUID, uuid.toString());
055 }
056
057 public String getVersion() {
058 return getOption(VERSION);
059 }
060
061 public void setVersion( String version ) {
062 setOption(VERSION, version);
063 }
064
065 public String getModelName() {
066 return getOption(MODEL);
067 }
068
069 public void setModelName( Model model ) {
070 String modelName = model != null ? model.getName() : null;
071 setOption(MODEL, modelName);
072 }
073
074 public String getOption( String name ) {
075 StoreOptionEntity entity = entityManager.find(StoreOptionEntity.class, name);
076 return entity != null ? entity.getValue() : null;
077 }
078
079 public void setOption( String name,
080 String value ) {
081 CheckArg.isNotEmpty(name, "name");
082 if (value != null) value = value.trim();
083 StoreOptionEntity entity = entityManager.find(StoreOptionEntity.class, name);
084 if (entity == null) {
085 if (value != null) {
086 // There is no existing entity, but there is a valid value ...
087 entity = new StoreOptionEntity(name, value);
088 entityManager.persist(entity);
089 }
090 } else {
091 if (value != null) {
092 // Set value on the entity ...
093 entity.setValue(value);
094 } else {
095 // The existing entity is to be removed ...
096 entityManager.remove(entity);
097 }
098 }
099 }
100
101 public void removeOption( String name ) {
102 StoreOptionEntity entity = new StoreOptionEntity(name);
103 entityManager.remove(entity);
104 }
105 }