com.googlecode.genericdao.dao.hibernate.DAODispatcher Maven / Gradle / Ivy
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/* Copyright 2013 David Wolverton
*
* 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 com.googlecode.genericdao.dao.hibernate;
import java.io.Serializable;
import java.util.List;
import com.googlecode.genericdao.dao.BaseDAODispatcher;
import com.googlecode.genericdao.dao.DAODispatcherException;
import com.googlecode.genericdao.search.ExampleOptions;
import com.googlecode.genericdao.search.Filter;
import com.googlecode.genericdao.search.ISearch;
import com.googlecode.genericdao.search.SearchResult;
/**
* This is an implementation of GeneralDAO that delegates to other DAOs
* depending on what entity class is being processed.
*
*
Set the specificDAOs Map in order to configure which DAO will be used
* for which entity class. If the map contains no entry for a given class,
* the generalDAO is used.
*
*
For example to dispatch operation on com.myproject.model.Customer to a DAO called customerDAO,
* set the map like this. (Of course tools like Spring can be used to do this
* configuration more elequently.)
*
* Map specificDAOs = new HashMap();
* specificDAOs.put("com.myproject.model.Customer", customerDAO);
*
* DAODispatcher dispatcher = new DAODispatcher();
* dispatcher.setSpecificDAOs(specificDAOs);
*
*
* @author dwolverton
*
*/
@SuppressWarnings("unchecked")
public class DAODispatcher extends BaseDAODispatcher implements GeneralDAO {
protected GeneralDAO generalDAO;
/**
* GeneralDAO has default implementations for the standard DAO methods.
* Which model class it uses is specified when calling the particular
* method.
*/
public void setGeneralDAO(GeneralDAO generalDAO) {
this.generalDAO = generalDAO;
}
public int count(ISearch search) {
Object specificDAO = getSpecificDAO(search.getSearchClass().getName());
if (specificDAO != null) {
if (specificDAO instanceof GenericDAO) {
return ((GenericDAO) specificDAO).count(search);
} else {
return (Integer) callMethod(specificDAO, "count", search);
}
} else {
return generalDAO.count(search);
}
}
public T find(Class type, Serializable id) {
Object specificDAO = getSpecificDAO(type.getName());
if (specificDAO != null) {
if (specificDAO instanceof GenericDAO) {
return (T) ((GenericDAO) specificDAO).find(id);
} else {
return (T) callMethod(specificDAO, "find", id);
}
} else {
return (T) generalDAO.find(type, id);
}
}
public T[] find(Class type, Serializable... ids) {
Object specificDAO = getSpecificDAO(type.getName());
if (specificDAO != null) {
if (specificDAO instanceof GenericDAO) {
return (T[]) ((GenericDAO) specificDAO).find(ids);
} else {
return (T[]) callMethod(specificDAO, "find", (Object[]) ids);
}
} else {
return (T[]) generalDAO.find(type, ids);
}
}
public List findAll(Class type) {
Object specificDAO = getSpecificDAO(type.getName());
if (specificDAO != null) {
if (specificDAO instanceof GenericDAO) {
return ((GenericDAO) specificDAO).findAll();
} else {
return (List) callMethod(specificDAO, "findAll");
}
} else {
return generalDAO.findAll(type);
}
}
/**
* @deprecated use flush(Class)
*/
public void flush() {
throw new DAODispatcherException(
"The flush() method cannot be used with DAODispatcher because it could does not include a Class type to dispatch to. Use flush(Class).");
}
public void flush(Class klass) {
Object specificDAO = getSpecificDAO(klass.getName());
if (specificDAO != null) {
if (specificDAO instanceof GenericDAO) {
((GenericDAO) specificDAO).flush();
} else {
callMethod(specificDAO, "flush");
}
} else {
generalDAO.flush();
}
}
public T getReference(Class type, Serializable id) {
Object specificDAO = getSpecificDAO(type.getName());
if (specificDAO != null) {
if (specificDAO instanceof GenericDAO) {
return (T) ((GenericDAO) specificDAO).getReference(id);
} else {
return (T) callMethod(specificDAO, "getReference", id);
}
} else {
return (T) generalDAO.getReference(type, id);
}
}
public T[] getReferences(Class type, Serializable... ids) {
Object specificDAO = getSpecificDAO(type.getName());
if (specificDAO != null) {
if (specificDAO instanceof GenericDAO) {
return (T[]) ((GenericDAO) specificDAO).getReferences(ids);
} else {
return (T[]) callMethod(specificDAO, "getReferences", (Object[]) ids);
}
} else {
return generalDAO.getReferences(type, ids);
}
}
public boolean isAttached(Object entity) {
Object specificDAO = getSpecificDAO(entity.getClass().getName());
if (specificDAO != null) {
if (specificDAO instanceof GenericDAO) {
return ((GenericDAO) specificDAO).isAttached(entity);
} else {
return (Boolean) callMethod(specificDAO, "isAttached", entity);
}
} else {
return generalDAO.isAttached(entity);
}
}
public void refresh(Object... entities) {
Class type = getUniformArrayType(entities);
if (type == null) return;
if (type.equals(Object.class)) {
//There are several different types of entities
for (Object entity : entities) {
refresh(entity);
}
return;
}
Object specificDAO = getSpecificDAO(type.getName());
if (specificDAO != null) {
if (specificDAO instanceof GenericDAO) {
((GenericDAO) specificDAO).refresh(entities);
} else {
callMethod(specificDAO, "refresh", entities);
}
} else {
generalDAO.refresh(entities);
}
}
public boolean remove(Object entity) {
Object specificDAO = getSpecificDAO(entity.getClass().getName());
if (specificDAO != null) {
if (specificDAO instanceof GenericDAO) {
return ((GenericDAO) specificDAO).remove(entity);
} else {
return (Boolean) callMethod(specificDAO, "remove", entity);
}
} else {
return generalDAO.remove(entity);
}
}
public void remove(Object... entities) {
Class type = getUniformArrayType(entities);
if (type == null) return;
if (type.equals(Object.class)) {
//There are several different types of entities
for (Object entity : entities) {
remove(entity);
}
return;
}
Object specificDAO = getSpecificDAO(type.getName());
if (specificDAO != null) {
if (specificDAO instanceof GenericDAO) {
((GenericDAO) specificDAO).remove(entities);
} else {
callMethod(specificDAO, "remove", entities);
}
} else {
generalDAO.remove(entities);
}
}
public boolean removeById(Class type, Serializable id) {
Object specificDAO = getSpecificDAO(type.getName());
if (specificDAO != null) {
if (specificDAO instanceof GenericDAO) {
return ((GenericDAO) specificDAO).removeById(id);
} else {
return (Boolean) callMethod(specificDAO, "removeById", id);
}
} else {
return generalDAO.removeById(type, id);
}
}
public void removeByIds(Class type, Serializable... ids) {
Object specificDAO = getSpecificDAO(type.getName());
if (specificDAO != null) {
if (specificDAO instanceof GenericDAO) {
((GenericDAO) specificDAO).removeByIds(ids);
} else {
callMethod(specificDAO, "removeByIds", (Object[]) ids);
}
} else {
generalDAO.removeByIds(type, ids);
}
}
public boolean save(Object entity) {
Object specificDAO = getSpecificDAO(entity.getClass().getName());
if (specificDAO != null) {
if (specificDAO instanceof GenericDAO) {
return ((GenericDAO) specificDAO).save(entity);
} else {
return (Boolean) callMethod(specificDAO, "save", entity);
}
} else {
return generalDAO.save(entity);
}
}
public boolean[] save(Object... entities) {
if (entities == null)
return null;
Class type = getUniformArrayType(entities);
if (type == null)
return new boolean[entities.length];
if (type.equals(Object.class)) {
//There are several different types of entities
boolean[] isNew = new boolean[entities.length];
for (int i = 0; i < entities.length; i++) {
isNew[i] = save(entities[i]);
}
return isNew;
}
Object specificDAO = getSpecificDAO(type.getName());
if (specificDAO != null) {
if (specificDAO instanceof GenericDAO) {
return ((GenericDAO) specificDAO).save(entities);
} else {
return (boolean[]) callMethod(specificDAO, "save", entities);
}
} else {
return generalDAO.save(entities);
}
}
public List search(ISearch search) {
Object specificDAO = getSpecificDAO(search.getSearchClass().getName());
if (specificDAO != null) {
if (specificDAO instanceof GenericDAO) {
return ((GenericDAO) specificDAO).search(search);
} else {
return (List) callMethod(specificDAO, "search", search);
}
} else {
return generalDAO.search(search);
}
}
public SearchResult searchAndCount(ISearch search) {
Object specificDAO = getSpecificDAO(search.getSearchClass().getName());
if (specificDAO != null) {
if (specificDAO instanceof GenericDAO) {
return ((GenericDAO) specificDAO).searchAndCount(search);
} else {
return (SearchResult) callMethod(specificDAO, "searchAndCount", search);
}
} else {
return generalDAO.searchAndCount(search);
}
}
public Object searchUnique(ISearch search) {
Object specificDAO = getSpecificDAO(search.getSearchClass().getName());
if (specificDAO != null) {
if (specificDAO instanceof GenericDAO) {
return ((GenericDAO) specificDAO).searchUnique(search);
} else {
return callMethod(specificDAO, "searchUnique", search);
}
} else {
return generalDAO.searchUnique(search);
}
}
public Filter getFilterFromExample(Object example) {
Object specificDAO = getSpecificDAO(example.getClass().getName());
if (specificDAO != null) {
if (specificDAO instanceof GenericDAO) {
return ((GenericDAO) specificDAO).getFilterFromExample(example);
} else {
return (Filter) callMethod(specificDAO, "getFilterFromExample", example);
}
} else {
return generalDAO.getFilterFromExample(example);
}
}
public Filter getFilterFromExample(Object example, ExampleOptions options) {
Object specificDAO = getSpecificDAO(example.getClass().getName());
if (specificDAO != null) {
if (specificDAO instanceof GenericDAO) {
return ((GenericDAO) specificDAO).getFilterFromExample(example, options);
} else {
return (Filter) callMethod(specificDAO, "getFilterFromExample", example, options);
}
} else {
return generalDAO.getFilterFromExample(example, options);
}
}
}
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