com.xiaoleilu.hutool.db.ds.pooled.PooledDSFactory Maven / Gradle / Ivy
package com.xiaoleilu.hutool.db.ds.pooled;
import java.util.Collection;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import javax.sql.DataSource;
import com.xiaoleilu.hutool.collection.CollectionUtil;
import com.xiaoleilu.hutool.db.ds.DSFactory;
import com.xiaoleilu.hutool.io.IoUtil;
import com.xiaoleilu.hutool.setting.Setting;
import com.xiaoleilu.hutool.util.StrUtil;
/**
* 池化数据源工厂类
* @author Looly
*
*/
public class PooledDSFactory extends DSFactory {
public static final String DS_NAME = "Hutool-Pooled-DataSource";
/** 数据源池 */
private Map dsMap;
public PooledDSFactory() {
this(null);
}
public PooledDSFactory(Setting setting) {
super(DS_NAME, PooledDataSource.class, setting);
this.dsMap = new ConcurrentHashMap<>();
}
@Override
synchronized public DataSource getDataSource(String group) {
if (group == null) {
group = StrUtil.EMPTY;
}
// 如果已经存在已有数据源(连接池)直接返回
final PooledDataSource existedDataSource = dsMap.get(group);
if (existedDataSource != null) {
return existedDataSource;
}
final PooledDataSource ds = createDataSource(group);
// 添加到数据源池中,以备下次使用
dsMap.put(group, ds);
return ds;
}
@Override
public void close(String group) {
if (group == null) {
group = StrUtil.EMPTY;
}
PooledDataSource ds = dsMap.get(group);
if (ds != null) {
IoUtil.close(ds);
dsMap.remove(group);
}
}
@Override
public void destroy() {
if(CollectionUtil.isNotEmpty(dsMap)){
Collection values = dsMap.values();
for (PooledDataSource ds : values) {
IoUtil.close(ds);
}
dsMap.clear();
}
}
/**
* 创建数据源
* @param group 分组
* @return 池化数据源 {@link PooledDataSource}
*/
private PooledDataSource createDataSource(String group){
if (group == null) {
group = StrUtil.EMPTY;
}
final PooledDataSource ds = new PooledDataSource(new DbSetting(this.setting), group);
return ds;
}
}
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