+++ /dev/null
-/*
- * Copyright (C) 2007-2012 Argeo GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.argeo.server.hibernate;
-
-import java.beans.PropertyDescriptor;
-import java.io.Serializable;
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
-import org.argeo.server.dao.LightDaoSupport;
-import org.hibernate.EmptyInterceptor;
-import org.hibernate.type.Type;
-import org.springframework.beans.BeanWrapper;
-import org.springframework.beans.BeanWrapperImpl;
-
-public class LightDaoInterceptor extends EmptyInterceptor {
- private final static Log log = LogFactory.getLog(LightDaoInterceptor.class);
-
- private static final long serialVersionUID = 1L;
-
- public final static String DEFAULT_EXTERNAL_SUFFIX = "_external";
-
- private String externalSuffix = DEFAULT_EXTERNAL_SUFFIX;
-
- private LightDaoSupport lightDaoSupport;
-
- private List<Class<?>> classes = new ArrayList<Class<?>>();
-
- private Map<Class<?>, String> businessIdFields = new HashMap<Class<?>, String>();
-
- /** internal */
- private final Map<Class<?>, Map<Serializable, Object>> bidMappings = new HashMap<Class<?>, Map<Serializable, Object>>();
-
- @Override
- public Object getEntity(String entityName, Serializable id) {
- Class<?> clss = findSupportingClass(entityName);
- Object res = null;
- if (clss != null) {
- if (businessIdFields.containsKey(clss)) {
- String field = businessIdFields.get(clss);
- Object value = bidMappings.get(clss).get(id);
- res = lightDaoSupport.getByField(clss, field, value);
- if (log.isTraceEnabled())
- log.debug("Got entity " + clss + " (" + field + "=" + value
- + ")");
- } else {
- res = lightDaoSupport.getByKey(clss, id);
- if (log.isTraceEnabled())
- log.debug("Got entity " + clss + " (id=" + id + ")");
- }
- } else {
- res = super.getEntity(entityName, id);
- }
- return res;
- }
-
- @Override
- public String getEntityName(Object object) {
- if (supports(object)) {
- return toExternalName(object.getClass());
- } else {
- return super.getEntityName(object);
- }
- }
-
- @Override
- public boolean onSave(Object entity, Serializable id, Object[] state,
- String[] propertyNames, Type[] types) {
- if (supports(entity)) {
- Class<?> clss = entity.getClass();
- if (businessIdFields.containsKey(clss)) {
- if (!bidMappings.containsKey(clss))
- bidMappings.put(clss, new HashMap<Serializable, Object>());
- BeanWrapper bw = new BeanWrapperImpl(entity);
- Object bid = bw.getPropertyValue(businessIdFields.get(clss));
- bidMappings.get(clss).put(id, bid);
- if (log.isTraceEnabled())
- log.debug("Mapped tid " + id + " with bid " + bid + " for "
- + clss);
- }
- }
- return super.onSave(entity, id, state, propertyNames, types);
- }
-
- @Override
- public boolean onLoad(Object entity, Serializable id, Object[] state,
- String[] propertyNames, Type[] types) {
- Class<?> clss = entity.getClass();
- Object source = null;
- if (lightDaoSupport.getSupportedClasses().contains(clss)) {
- if (businessIdFields.containsKey(clss)) {
- String field = businessIdFields.get(clss);
- Object value = bidMappings.get(clss).get(id);
- source = lightDaoSupport.getByField(clss, field, value);
- if (log.isTraceEnabled())
- log.debug("Loading entity " + clss + " (" + field + "="
- + value + ")");
- } else {
- source = lightDaoSupport.getByKey(clss, id);
- if (log.isTraceEnabled())
- log.debug("Loading entity " + clss + " (id=" + id + ")");
- }
- }
-
- if (source != null) {
- BeanWrapper bwTarget = new BeanWrapperImpl(entity);
- BeanWrapper bwSource = new BeanWrapperImpl(source);
- for (PropertyDescriptor pd : bwTarget.getPropertyDescriptors()) {
- String propName = pd.getName();
- if (bwSource.isReadableProperty(propName)
- && bwTarget.isWritableProperty(propName)) {
- bwTarget.setPropertyValue(propName, bwSource
- .getPropertyValue(propName));
- if (log.isTraceEnabled())
- log.debug("Loaded property " + propName + " for class "
- + clss + " (id=" + id + ")");
- }
- }
-
- return true;
- } else {
- // res = super.getEntity(entityName, id);
- return super.onLoad(entity, id, state, propertyNames, types);
- }
- }
-
- protected Boolean supports(Object object) {
- if (classes.contains(object.getClass()))
- return lightDaoSupport.getSupportedClasses().contains(
- object.getClass());
- else
- return false;
- }
-
- /** @return null if not found */
- protected Class<?> findSupportingClass(String entityName) {
- for (Class<?> clss : lightDaoSupport.getSupportedClasses()) {
- if (toExternalName(clss).equals(entityName)) {
- if (classes.contains(clss))
- return clss;
- }
- }
- return null;
- }
-
- protected final String toExternalName(Class<?> clss) {
- return clss.getSimpleName() + externalSuffix;
- }
-
- public void setExternalSuffix(String externalSuffix) {
- this.externalSuffix = externalSuffix;
- }
-
- public void setLightDaoSupport(LightDaoSupport lightDaoSupport) {
- this.lightDaoSupport = lightDaoSupport;
- }
-
- public void setClasses(List<Class<?>> classes) {
- this.classes = classes;
- }
-
- public void setBusinessIdFields(Map<Class<?>, String> businessIdFields) {
- this.businessIdFields = businessIdFields;
- }
-
-}
projects / lgpl / argeo-commons.git / blobdiff