Package com.jfinal.plugin.c3p0

Source Code of com.jfinal.plugin.c3p0.C3p0Plugin

/**
* Copyright (c) 2011-2013, James Zhan 詹波 (jfinal@126.com).
*
* 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.jfinal.plugin.c3p0;

import java.beans.PropertyVetoException;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Properties;
import javax.sql.DataSource;
import com.jfinal.kit.StringKit;
import com.jfinal.plugin.IPlugin;
import com.jfinal.plugin.activerecord.IDataSourceProvider;
import com.mchange.v2.c3p0.ComboPooledDataSource;

/**
* The c3p0 datasource plugin.
*/
public class C3p0Plugin implements IPlugin, IDataSourceProvider {
 
  private String jdbcUrl;
  private String user;
  private String password;
  private String driverClass = "com.mysql.jdbc.Driver";
  private int maxPoolSize = 100;
  private int minPoolSize = 10;
  private int initialPoolSize = 10;
  private int maxIdleTime = 20;
  private int acquireIncrement = 2;
 
  private ComboPooledDataSource dataSource;
 
  public C3p0Plugin setDriverClass(String driverClass) {
    if (StringKit.isBlank(driverClass))
      throw new IllegalArgumentException("driverClass can not be blank.");
    this.driverClass = driverClass;
    return this;
  }
 
  public C3p0Plugin setMaxPoolSize(int maxPoolSize) {
    if (maxPoolSize < 1)
      throw new IllegalArgumentException("maxPoolSize must more than 0.");
    this.maxPoolSize = maxPoolSize;
    return this;
  }
 
  public C3p0Plugin setMinPoolSize(int minPoolSize) {
    if (minPoolSize < 1)
      throw new IllegalArgumentException("minPoolSize must more than 0.");
    this.minPoolSize = minPoolSize;
    return this;
  }
 
  public C3p0Plugin setInitialPoolSize(int initialPoolSize) {
    if (initialPoolSize < 1)
      throw new IllegalArgumentException("initialPoolSize must more than 0.");
    this.initialPoolSize = initialPoolSize;
    return this;
  }
 
  public C3p0Plugin setMaxIdleTime(int maxIdleTime) {
    if (maxIdleTime < 1)
      throw new IllegalArgumentException("maxIdleTime must more than 0.");
    this.maxIdleTime = maxIdleTime;
    return this;
  }
 
  public C3p0Plugin setAcquireIncrement(int acquireIncrement) {
    if (acquireIncrement < 1)
      throw new IllegalArgumentException("acquireIncrement must more than 0.");
    this.acquireIncrement = acquireIncrement;
    return this;
  }
 
  public C3p0Plugin(String jdbcUrl, String user, String password) {
    this.jdbcUrl = jdbcUrl;
    this.user = user;
    this.password = password;
  }
 
  public C3p0Plugin(String jdbcUrl, String user, String password, String driverClass) {
    this.jdbcUrl = jdbcUrl;
    this.user = user;
    this.password = password;
    this.driverClass = driverClass != null ? driverClass : this.driverClass;
  }
 
  public C3p0Plugin(String jdbcUrl, String user, String password, String driverClass, Integer maxPoolSize, Integer minPoolSize, Integer initialPoolSize, Integer maxIdleTime, Integer acquireIncrement) {
    initC3p0Properties(jdbcUrl, user, password, driverClass, maxPoolSize, minPoolSize, initialPoolSize, maxIdleTime, acquireIncrement);
  }
 
  private void initC3p0Properties(String jdbcUrl, String user, String password, String driverClass, Integer maxPoolSize, Integer minPoolSize, Integer initialPoolSize, Integer maxIdleTime, Integer acquireIncrement) {
    this.jdbcUrl = jdbcUrl;
    this.user = user;
    this.password = password;
    this.driverClass = driverClass != null ? driverClass : this.driverClass;
    this.maxPoolSize = maxPoolSize != null ? maxPoolSize : this.maxPoolSize;
    this.minPoolSize = minPoolSize != null ? minPoolSize : this.minPoolSize;
    this.initialPoolSize = initialPoolSize != null ? initialPoolSize : this.initialPoolSize;
    this.maxIdleTime = maxIdleTime != null ? maxIdleTime : this.maxIdleTime;
    this.acquireIncrement = acquireIncrement != null ? acquireIncrement : this.acquireIncrement;
  }
 
  public C3p0Plugin(File propertyfile) {
    FileInputStream fis = null;
    try {
      fis = new FileInputStream(propertyfile);
      Properties ps = new Properties();
      ps.load(fis);
     
      initC3p0Properties(ps.getProperty("jdbcUrl"), ps.getProperty("user"), ps.getProperty("password"), ps.getProperty("driverClass"),
          toInt(ps.getProperty("maxPoolSize")), toInt(ps.getProperty("minPoolSize")), toInt(ps.getProperty("initialPoolSize")),
          toInt(ps.getProperty("maxIdleTime")),toInt(ps.getProperty("acquireIncrement")));
    } catch (Exception e) {
      e.printStackTrace();
    }
    finally {
      if (fis != null)
        try {fis.close();} catch (IOException e) {e.printStackTrace();}
    }
  }
 
  public C3p0Plugin(Properties properties) {
    Properties ps = properties;
    initC3p0Properties(ps.getProperty("jdbcUrl"), ps.getProperty("user"), ps.getProperty("password"), ps.getProperty("driverClass"),
        toInt(ps.getProperty("maxPoolSize")), toInt(ps.getProperty("minPoolSize")), toInt(ps.getProperty("initialPoolSize")),
        toInt(ps.getProperty("maxIdleTime")),toInt(ps.getProperty("acquireIncrement")));
  }
 
  public boolean start() {
    dataSource = new ComboPooledDataSource();
    dataSource.setJdbcUrl(jdbcUrl);
    dataSource.setUser(user);
    dataSource.setPassword(password);
    try {dataSource.setDriverClass(driverClass);}
    catch (PropertyVetoException e) {dataSource = null; System.err.println("C3p0Plugin start error"); throw new RuntimeException(e);}
    dataSource.setMaxPoolSize(maxPoolSize);
    dataSource.setMinPoolSize(minPoolSize);
    dataSource.setInitialPoolSize(initialPoolSize);
    dataSource.setMaxIdleTime(maxIdleTime);
    dataSource.setAcquireIncrement(acquireIncrement);
   
    return true;
  }
 
  private Integer toInt(String str) {
    return Integer.parseInt(str);
  }
 
  public DataSource getDataSource() {
    return dataSource;
  }
 
  public boolean stop() {
    if (dataSource != null)
      dataSource.close();
    return true;
  }
}
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