GenericDomainServiceImpl.java

/**
 * Copyright 2011 the original author or authors.
 *
 * 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.bricket.plugin.genericdomain.service.impl;

import java.util.List;
import java.util.Locale;
import java.util.Map;

import org.bricket.plugin.genericdomain.domain.DomainObject;
import org.bricket.plugin.genericdomain.service.GenericDomainService;
import org.bricket.service.BricketServiceImpl;
import org.bricket.service.UncheckedRuntimeException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.synyx.hades.dao.GenericDao;
import org.synyx.hades.domain.Order;
import org.synyx.hades.domain.PageRequest;

/**
 * @author Ingo Renner
 * @author Henning Teek
 */
@Service(value = "genericDomainService")
@Transactional(readOnly = true)
public class GenericDomainServiceImpl extends BricketServiceImpl implements GenericDomainService {
    private final Logger log = LoggerFactory.getLogger(GenericDomainServiceImpl.class);

    @Autowired
    private Map<String, GenericDao<? extends DomainObject, Long>> genericDaos;

    @Override
    protected void onInit() {
        log.info("generic domain service initialized. bricket daos = "
                + (genericDaos == null ? "null" : genericDaos.keySet()));
    }

    @SuppressWarnings("unchecked")
    private <T extends DomainObject> GenericDao<T, Long> getDao(Class<T> type) {
        String simpleName = type.getSimpleName();
        String key = simpleName.substring(0, 1).toLowerCase(Locale.getDefault()) + simpleName.substring(1) + "Dao";
        if (genericDaos.containsKey(key)) {
            return (GenericDao<T, Long>) genericDaos.get(key);
        }
        throw new UncheckedRuntimeException("no dao found for type: " + type.getName());
    }

    @Override
    public <T extends DomainObject> T load(Class<T> type, Long id) {
        return getDao(type).readByPrimaryKey(id);
    }

    @Override
    public <T extends DomainObject> List<T> loadAll(Class<T> type, final int from, final int count,
            final String sortProperty, final boolean sortAsc) {
        final PageRequest pageable;

        int page;

        if (from > 0) {
            page = from / count;
        } else {
            page = 0;
        }

        if (sortProperty == null || "".equals(sortProperty.trim())) {
            pageable = new PageRequest(page, count);
        } else {
            pageable = new PageRequest(page, count, sortAsc ? Order.ASCENDING : Order.DESCENDING, sortProperty);
        }
        return getDao(type).readAll(pageable).asList();
    }

    @Override
    public <T extends DomainObject> List<T> loadAll(Class<T> type) {
        return getDao(type).readAll();
    }

    @Override
    public <T extends DomainObject> int getCount(Class<T> type) {
        return getDao(type).count().intValue();
    }

    @Override
    @Transactional
    public <T extends DomainObject> void save(Class<T> type, T object) {
        getDao(type).save(object);
    }

    @Override
    @Transactional
    public <T extends DomainObject> void delete(Class<T> type, T object) {
        getDao(type).delete(getDao(type).readByPrimaryKey(object.getId()));
    }
}