cn.loveapple.client.android.shiba.database.impl.BookMarkDaoImpl.java Source code

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Here is the source code for cn.loveapple.client.android.shiba.database.impl.BookMarkDaoImpl.java

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/*
 * $HeadURL$
 * $Author$
 * $Revision$
 * $Date$
 *
 * ====================================================================
 *
 * Copyright (C) 2008 by loveapple.sourceforge.jp
 *
 * All copyright notices regarding loveapple and loveapple CoreLib
 * MUST remain intact in the scripts, documents and source code.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public 
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * Correspondence and Marketing Questions can be sent to:
 * info at loveapple
 *
 * @author: loveapple
 */
package cn.loveapple.client.android.shiba.database.impl;

import static cn.loveapple.client.android.shiba.database.entity.BookMarkEntity.*;
import static cn.loveapple.client.android.Constant.*;

import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import org.apache.commons.lang.builder.ToStringBuilder;

import android.content.ContentValues;
import android.database.Cursor;
import android.util.Log;
import cn.loveapple.client.android.LoveappleShibaDatabaseOpenHelper;
import cn.loveapple.client.android.shiba.database.BaseDao;
import cn.loveapple.client.android.shiba.database.BookMarkDao;
import cn.loveapple.client.android.shiba.database.entity.BookMarkEntity;
import cn.loveapple.client.android.util.StringUtils;

/**
 * 
 * @author loveapple
 * @version $Revision$
 * @date $Date$
 * @id $Id$
 *
 */
public class BookMarkDaoImpl extends BaseDao implements BookMarkDao {

    public BookMarkDaoImpl(LoveappleShibaDatabaseOpenHelper helper) {
        super(helper);
    }

    /**
     * {@inheritDoc}
     */
    public List<BookMarkEntity> getUrlHistory(String url, String title, int limit) {
        Cursor cursor = null;
        List<BookMarkEntity> result = null;
        StringBuilder condition = new StringBuilder();
        List<String> params = new ArrayList<String>();
        if (StringUtils.isNotEmpty(url)) {
            condition.append(COLUMN_URL);
            condition.append(" LIKE '?%' ");
            params.add(url);
        }
        if (StringUtils.isNotEmpty(title)) {
            if (StringUtils.isNotEmpty(url)) {
                condition.append(" AND ");
            }
            condition.append(COLUMN_TITLE);
            condition.append(" LIKE '?%' ");
            params.add(title);
        }
        try {
            writableDb = getWritableDb();
            cursor = writableDb.query(TABLE_NAME, null,
                    condition.toString() + " ORDER BY " + COLUMN_TIMESTAMP + " DESC",
                    params.toArray(new String[] {}), null, null, null);
            result = new ArrayList<BookMarkEntity>();
            cursor.moveToFirst();
            while (!cursor.isAfterLast()) {
                result.add(getUrlHistoryEntity(cursor));
                cursor.moveToNext();
            }
        } finally {
            if (cursor != null) {
                cursor.close();
            }
        }
        return result;
    }

    /**
     * 
     * {@inheritDoc}
     */
    public BookMarkEntity getUrlHistory(String url, String title) {
        List<BookMarkEntity> result = getUrlHistory(url, title, 1);
        if (result != null && 0 < result.size()) {
            return result.get(0);
        }
        return null;
    }

    /**
     * {@inheritDoc}
     */
    public BookMarkEntity save(BookMarkEntity entity) {
        if (entity == null) {
            throw new IllegalArgumentException("history entity is null.");
        }
        if (StringUtils.isEmpty(entity.getUrl())) {
            throw new IllegalArgumentException("history url is null.");
        }

        ContentValues values = new ContentValues();
        values.put(COLUMN_URL, entity.getUrl());
        if (StringUtils.isNotEmpty(entity.getTitle())) {
            values.put(COLUMN_TITLE, entity.getTitle());
        }
        if (entity.getTimestamp() != null) {
            values.put(COLUMN_TIMESTAMP, entity.getTimestamp().getTime());
        }

        BookMarkEntity result = null;

        try {
            writableDb = getWritableDb();

            int colNum = writableDb.update(TABLE_NAME, values, COLUMN_URL + "=?", new String[] { entity.getUrl() });
            if (colNum < 1) {
                writableDb.insert(TABLE_NAME, null, values);
                Log.i(LOG_TAG, "update : " + ToStringBuilder.reflectionToString(values));
            }
            result = getUrlHistory(entity.getUrl(), null);
        } finally {
            //writableDb.close();
        }
        return result;
    }

    /**
     * {@linkplain Cursor }?{@linkplain BookMarkEntity URL}???
     * 
     * @param cursor
     * @return
     */
    private BookMarkEntity getUrlHistoryEntity(Cursor cursor) {
        if (cursor == null || cursor.getCount() < 1) {
            return null;
        }
        BookMarkEntity entity = new BookMarkEntity();
        entity.setUrl(cursor.getString(0));
        entity.setTitle(cursor.getString(1));
        entity.setTimestamp(new Date(cursor.getLong(2)));

        return entity;
    }

}