com.mycollab.db.persistence.service.DefaultCrudService.java Source code

Introduction

Here is the source code for com.mycollab.db.persistence.service.DefaultCrudService.java

Source

/**
 * This file is part of mycollab-dao.
 *
 * mycollab-dao is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * mycollab-dao is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with mycollab-dao.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.mycollab.db.persistence.service;

import com.mycollab.core.MyCollabException;
import com.mycollab.core.cache.CacheKey;
import com.mycollab.db.persistence.ICrudGenericDAO;
import com.mycollab.core.utils.StringUtils;
import org.apache.commons.beanutils.PropertyUtils;

import java.io.Serializable;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.*;

/**
 * The generic class that serves the basic operations in data access layer:
 * Create, Retrieve, Update and Delete.
 *
 * @param <T>
 * @param <K>
 * @author MyCollab Ltd.
 * @since 1.0
 */
public abstract class DefaultCrudService<K extends Serializable, T> implements ICrudService<K, T> {

    public abstract ICrudGenericDAO<K, T> getCrudMapper();

    private Method cacheUpdateMethod;

    @Override
    public T findByPrimaryKey(K primaryKey, Integer accountId) {
        return getCrudMapper().selectByPrimaryKey(primaryKey);
    }

    @Override
    public Integer saveWithSession(T record, String username) {
        if (!StringUtils.isBlank(username)) {
            try {
                PropertyUtils.setProperty(record, "createduser", username);
            } catch (Exception e) {
            }
        }

        try {
            PropertyUtils.setProperty(record, "createdtime", new GregorianCalendar().getTime());
            PropertyUtils.setProperty(record, "lastupdatedtime", new GregorianCalendar().getTime());
        } catch (Exception e) {
        }

        getCrudMapper().insertAndReturnKey(record);
        try {
            return (Integer) PropertyUtils.getProperty(record, "id");
        } catch (Exception e) {
            return 0;
        }
    }

    @Override
    public Integer updateWithSession(T record, String username) {
        try {
            PropertyUtils.setProperty(record, "lastupdatedtime", new GregorianCalendar().getTime());
        } catch (Exception e) {
        }

        if (cacheUpdateMethod == null) {
            findCacheUpdateMethod();
        }
        try {
            cacheUpdateMethod.invoke(getCrudMapper(), record);
            return 1;
        } catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException e) {
            throw new MyCollabException(e);
        }
    }

    private void findCacheUpdateMethod() {
        ICrudGenericDAO<K, T> crudMapper = getCrudMapper();
        Class<? extends ICrudGenericDAO> crudMapperCls = crudMapper.getClass();
        for (Method method : crudMapperCls.getMethods()) {
            if ("updateByPrimaryKeyWithBLOBs".equals(method.getName())) {
                cacheUpdateMethod = method;
                return;
            } else if ("updateByPrimaryKey".equals(method.getName())) {
                cacheUpdateMethod = method;
            }
        }
    }

    public Integer updateSelectiveWithSession(@CacheKey T record, String username) {
        try {
            PropertyUtils.setProperty(record, "lastupdatedtime", new GregorianCalendar().getTime());
        } catch (Exception e) {
        }
        return getCrudMapper().updateByPrimaryKeySelective(record);
    }

    @Override
    public void removeWithSession(T item, String username, Integer accountId) {
        massRemoveWithSession(Collections.singletonList(item), username, accountId);
    }

    @Override
    public void massRemoveWithSession(List<T> items, String username, Integer accountId) {
        List<T> primaryKeys = new ArrayList<>(items.size());
        for (T item : items) {
            try {
                T primaryKey = (T) PropertyUtils.getProperty(item, "id");
                primaryKeys.add(primaryKey);
            } catch (Exception e) {
                throw new MyCollabException(e);
            }
        }
        getCrudMapper().removeKeysWithSession(primaryKeys);
    }

    @Override
    public void massUpdateWithSession(T record, List<K> primaryKeys, Integer accountId) {
        getCrudMapper().massUpdateWithSession(record, primaryKeys);
    }
}