Source Code Cross Referenced for EclipseLinkJpaEntityLifecycleInjector.java in  » Search-Engine » compass-2.0 » org » compass » gps » device » jpa » lifecycle » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Search Engine » compass 2.0 » org.compass.gps.device.jpa.lifecycle 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright 2004-2006 the original author or authors.
003:         *
004:         * Licensed under the Apache License, Version 2.0 (the "License");
005:         * you may not use this file except in compliance with the License.
006:         * You may obtain a copy of the License at
007:         *
008:         *      http://www.apache.org/licenses/LICENSE-2.0
009:         *
010:         * Unless required by applicable law or agreed to in writing, software
011:         * distributed under the License is distributed on an "AS IS" BASIS,
012:         * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013:         * See the License for the specific language governing permissions and
014:         * limitations under the License.
015:         */
016:
017:        package org.compass.gps.device.jpa.lifecycle;
018:
019:        import java.util.Map;
020:        import java.util.Vector;
021:        import javax.persistence.EntityManagerFactory;
022:
023:        import org.compass.core.mapping.CascadeMapping;
024:        import org.compass.gps.device.jpa.AbstractDeviceJpaEntityListener;
025:        import org.compass.gps.device.jpa.JpaGpsDevice;
026:        import org.compass.gps.device.jpa.JpaGpsDeviceException;
027:        import org.compass.gps.spi.CompassGpsInterfaceDevice;
028:        import org.eclipse.persistence.descriptors.ClassDescriptor;
029:        import org.eclipse.persistence.descriptors.DescriptorEvent;
030:        import org.eclipse.persistence.descriptors.DescriptorEventListener;
031:        import org.eclipse.persistence.jpa.JpaEntityManager;
032:        import org.eclipse.persistence.sessions.Session;
033:
034:        /**
035:         * Injects lifecycle listeners directly into Eclipse Persistence for mirroring operations.
036:         *
037:         * @author kimchy
038:         */
039:        public class EclipseLinkJpaEntityLifecycleInjector implements 
040:                JpaEntityLifecycleInjector {
041:
042:            private class TopLinkEssentialsEventListener extends
043:                    AbstractDeviceJpaEntityListener implements 
044:                    DescriptorEventListener {
045:
046:                private JpaGpsDevice device;
047:
048:                public TopLinkEssentialsEventListener(JpaGpsDevice device) {
049:                    this .device = device;
050:                }
051:
052:                @Override
053:                protected JpaGpsDevice getDevice() {
054:                    return this .device;
055:                }
056:
057:                public void postUpdate(DescriptorEvent event) {
058:                    postUpdate(event.getObject());
059:                }
060:
061:                public void postDelete(DescriptorEvent event) {
062:                    postRemove(event.getObject());
063:                }
064:
065:                public void postInsert(DescriptorEvent event) {
066:                    postPersist(event.getObject());
067:                }
068:
069:                // things we don't use
070:
071:                public void aboutToDelete(DescriptorEvent event) {
072:                }
073:
074:                public void aboutToInsert(DescriptorEvent event) {
075:                }
076:
077:                public void aboutToUpdate(DescriptorEvent event) {
078:                }
079:
080:                public boolean isOverriddenEvent(DescriptorEvent event,
081:                        Vector eventManagers) {
082:                    return false;
083:                }
084:
085:                public void postBuild(DescriptorEvent event) {
086:                }
087:
088:                public void postClone(DescriptorEvent event) {
089:                }
090:
091:                public void postMerge(DescriptorEvent event) {
092:                }
093:
094:                public void postRefresh(DescriptorEvent event) {
095:                }
096:
097:                public void postWrite(DescriptorEvent event) {
098:                }
099:
100:                public void preDelete(DescriptorEvent event) {
101:                }
102:
103:                public void preInsert(DescriptorEvent event) {
104:                }
105:
106:                public void prePersist(DescriptorEvent event) {
107:                }
108:
109:                public void preRemove(DescriptorEvent event) {
110:                }
111:
112:                public void preUpdate(DescriptorEvent event) {
113:                }
114:
115:                public void preUpdateWithChanges(DescriptorEvent event) {
116:                }
117:
118:                public void preWrite(DescriptorEvent event) {
119:                }
120:
121:            }
122:
123:            private DescriptorEventListener eventListener;
124:
125:            public void setEventListener(DescriptorEventListener eventListener) {
126:                this .eventListener = eventListener;
127:            }
128:
129:            public void injectLifecycle(
130:                    EntityManagerFactory entityManagerFactory,
131:                    JpaGpsDevice device) throws JpaGpsDeviceException {
132:
133:                CompassGpsInterfaceDevice gps = (CompassGpsInterfaceDevice) device
134:                        .getGps();
135:
136:                if (eventListener == null) {
137:                    eventListener = new TopLinkEssentialsEventListener(device);
138:                }
139:
140:                JpaEntityManager entityManager = (JpaEntityManager) entityManagerFactory
141:                        .createEntityManager();
142:                Session session = entityManager.getServerSession();
143:                entityManager.close();
144:
145:                Map descriptors = session.getDescriptors();
146:                for (Object o : descriptors.values()) {
147:                    ClassDescriptor classDescriptor = (ClassDescriptor) o;
148:                    Class mappedClass = classDescriptor.getJavaClass();
149:                    if (gps.hasMappingForEntityForMirror(mappedClass,
150:                            CascadeMapping.Cascade.ALL)) {
151:                        classDescriptor.getDescriptorEventManager()
152:                                .addListener(eventListener);
153:                    }
154:                }
155:            }
156:
157:            public void removeLifecycle(
158:                    EntityManagerFactory entityManagerFactory,
159:                    JpaGpsDevice device) throws JpaGpsDeviceException {
160:                CompassGpsInterfaceDevice gps = (CompassGpsInterfaceDevice) device
161:                        .getGps();
162:
163:                JpaEntityManager entityManager = (JpaEntityManager) entityManagerFactory
164:                        .createEntityManager();
165:                Session session = entityManager.getServerSession();
166:                entityManager.close();
167:
168:                Map descriptors = session.getDescriptors();
169:                for (Object o : descriptors.values()) {
170:                    ClassDescriptor classDescriptor = (ClassDescriptor) o;
171:                    Class mappedClass = classDescriptor.getJavaClass();
172:                    if (gps.hasMappingForEntityForMirror(mappedClass,
173:                            CascadeMapping.Cascade.ALL)) {
174:                        classDescriptor.getDescriptorEventManager()
175:                                .removeListener(eventListener);
176:                    }
177:                }
178:            }
179:        }
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