org.apache.commons.pool.impl.GenericObjectPool.setTestWhileIdle java code examples

Common ways to obtain GenericObjectPool

private void myMethod () {
 GenericObjectPool g =new GenericObjectPool()
new GenericObjectPool(null)
PoolableObjectFactory factory;new GenericObjectPool(factory)
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}

objectPool.setMinIdle(connectionMinIlde);
objectPool.setTestOnBorrow(testOnBorrow);
objectPool.setTestWhileIdle(testWhileIdle);
objectPool.setMinEvictableIdleTimeMillis(evictionTimeMillis);
objectPool.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRuns);

/**
 * Sets my configuration.
 *
 * @param conf configuration to use.
 * @see GenericObjectPool.Config
 */
public void setConfig(GenericObjectPool.Config conf) {
  synchronized (this) {
    setMaxIdle(conf.maxIdle);
    setMinIdle(conf.minIdle);
    setMaxActive(conf.maxActive);
    setMaxWait(conf.maxWait);
    setWhenExhaustedAction(conf.whenExhaustedAction);
    setTestOnBorrow(conf.testOnBorrow);
    setTestOnReturn(conf.testOnReturn);
    setTestWhileIdle(conf.testWhileIdle);
    setNumTestsPerEvictionRun(conf.numTestsPerEvictionRun);
    setMinEvictableIdleTimeMillis(conf.minEvictableIdleTimeMillis);
    setTimeBetweenEvictionRunsMillis(conf.timeBetweenEvictionRunsMillis);
    setSoftMinEvictableIdleTimeMillis(conf.softMinEvictableIdleTimeMillis);
    setLifo(conf.lifo);
  }
  allocate();
}

/**
 * Sets the <code>testWhileIdle</code> property. This property determines
 * whether or not the idle object evictor will validate connections.  For a
 * <code>true</code> value to have any effect, the 
 * <code>validationQuery</code> property must be set to a non-null string.
 * 
 * @param testWhileIdle new value for testWhileIdle property
 */
public synchronized void setTestWhileIdle(boolean testWhileIdle) {
  this.testWhileIdle = testWhileIdle;
  if (connectionPool != null) {
    connectionPool.setTestWhileIdle(testWhileIdle);
  }
}

/**
 * Sets the <code>testWhileIdle</code> property. This property determines
 * whether or not the idle object evictor will validate connections.  For a
 * <code>true</code> value to have any effect, the 
 * <code>validationQuery</code> property must be set to a non-null string.
 * 
 * @param testWhileIdle new value for testWhileIdle property
 */
public synchronized void setTestWhileIdle(boolean testWhileIdle) {
  this.testWhileIdle = testWhileIdle;
  if (connectionPool != null) {
    connectionPool.setTestWhileIdle(testWhileIdle);
  }
}

/**
 * Sets the <code>testWhileIdle</code> property. This property determines
 * whether or not the idle object evictor will validate connections.  For a
 * <code>true</code> value to have any effect, the 
 * <code>validationQuery</code> property must be set to a non-null string.
 * 
 * @param testWhileIdle new value for testWhileIdle property
 */
public synchronized void setTestWhileIdle(boolean testWhileIdle) {
  this.testWhileIdle = testWhileIdle;
  if (connectionPool != null) {
    connectionPool.setTestWhileIdle(testWhileIdle);
  }
}

/**
 * Sets the <code>testWhileIdle</code> property. This property determines
 * whether or not the idle object evictor will validate connections.  For a
 * <code>true</code> value to have any effect, the
 * <code>validationQuery</code> property must be set to a non-null string.
 *
 * @param testWhileIdle new value for testWhileIdle property
 */
public synchronized void setTestWhileIdle(boolean testWhileIdle) {
  this.testWhileIdle = testWhileIdle;
  if (connectionPool != null) {
    connectionPool.setTestWhileIdle(testWhileIdle);
  }
}

/**
 * Sets the <code>testWhileIdle</code> property. This property determines
 * whether or not the idle object evictor will validate connections.  For a
 * <code>true</code> value to have any effect, the 
 * <code>validationQuery</code> property must be set to a non-null string.
 * 
 * @param testWhileIdle new value for testWhileIdle property
 */
public void setTestWhileIdle(boolean testWhileIdle) {
  this.testWhileIdle = testWhileIdle;
  if (sessionPool != null) {
    sessionPool.setTestWhileIdle(testWhileIdle);
  }
}

GenericObjectPool connectionPool = new GenericObjectPool(null);
 connectionPool.setMinEvictableIdleTimeMillis(1000 * 60 * 30);
 connectionPool.setTimeBetweenEvictionRunsMillis(1000 * 60 * 30);
 connectionPool.setNumTestsPerEvictionRun(3);
 connectionPool.setTestOnBorrow(true);
 connectionPool.setTestWhileIdle(false);
 connectionPool.setTestOnReturn(false);
 props = new Properties();
 props.put("user", username);
 props.put("password", password);
 ConnectionFactory connectionFactory = new DriverManagerConnectionFactory(url, props);
 PoolableConnectionFactory poolableConnectionFactory = new PoolableConnectionFactory(connectionFactory, connectionPool, null, "SELECT 1", false, true);
 PoolingDataSource dataSource = new PoolingDataSource(connectionPool);

public static DataSource getPoolingDataSourceFromConf(Configuration conf) {
 final ConnectionFactory cf = new DriverManagerConnectionFactory(
   conf.get(LensConfConstants.SERVER_DB_JDBC_URL, LensConfConstants.DEFAULT_SERVER_DB_JDBC_URL),
   conf.get(LensConfConstants.SERVER_DB_JDBC_USER, LensConfConstants.DEFAULT_SERVER_DB_USER),
   conf.get(LensConfConstants.SERVER_DB_JDBC_PASS, LensConfConstants.DEFAULT_SERVER_DB_PASS));
 final GenericObjectPool connectionPool = new GenericObjectPool();
 connectionPool.setTestOnBorrow(false);
 connectionPool.setTestOnReturn(false);
 connectionPool.setTestWhileIdle(true);
 new PoolableConnectionFactory(cf, connectionPool, null,
   conf.get(LensConfConstants.SERVER_DB_VALIDATION_QUERY, LensConfConstants.DEFAULT_SERVER_DB_VALIDATION_QUERY),
   false, false).setDefaultAutoCommit(true);
 return new PoolingDataSource(connectionPool);
}

@Override
public void afterPropertiesSet() throws Exception {
  // 对象池
  objectPool = new GenericObjectPool<TTransport>();
  //
  ((GenericObjectPool<TTransport>) objectPool).setMaxActive(maxActive);
  ((GenericObjectPool<TTransport>) objectPool).setMaxIdle(maxIdle);
  ((GenericObjectPool<TTransport>) objectPool).setMinIdle(minIdle);
  ((GenericObjectPool<TTransport>) objectPool).setMaxWait(maxWait);
  ((GenericObjectPool<TTransport>) objectPool).setTestOnBorrow(testOnBorrow);
  ((GenericObjectPool<TTransport>) objectPool).setTestOnReturn(testOnReturn);
  ((GenericObjectPool<TTransport>) objectPool).setTestWhileIdle(testWhileIdle);
  ((GenericObjectPool<TTransport>) objectPool).setWhenExhaustedAction(GenericObjectPool.WHEN_EXHAUSTED_BLOCK);
  // 设置factory
  ThriftPoolableObjectFactory thriftPoolableObjectFactory = new ThriftPoolableObjectFactory(serviceIP, servicePort, conTimeOut);
  ((GenericObjectPool<TTransport>) objectPool).setFactory(thriftPoolableObjectFactory);
}

pool.setNumTestsPerEvictionRun(getNumTestsPerEvictionRun());
pool.setMinEvictableIdleTimeMillis(getMinEvictableIdleTimeMillis());
pool.setTestWhileIdle(getTestWhileIdle());

/**
 * Sets my configuration.
 *
 * @param conf configuration to use.
 * @see GenericObjectPool.Config
 */
public synchronized void setConfig(GenericObjectPool.Config conf) {
  setMaxIdle(conf.maxIdle);
  setMinIdle(conf.minIdle);
  setMaxActive(conf.maxActive);
  setMaxWait(conf.maxWait);
  setWhenExhaustedAction(conf.whenExhaustedAction);
  setTestOnBorrow(conf.testOnBorrow);
  setTestOnReturn(conf.testOnReturn);
  setTestWhileIdle(conf.testWhileIdle);
  setNumTestsPerEvictionRun(conf.numTestsPerEvictionRun);
  setMinEvictableIdleTimeMillis(conf.minEvictableIdleTimeMillis);
  setTimeBetweenEvictionRunsMillis(conf.timeBetweenEvictionRunsMillis);
  setSoftMinEvictableIdleTimeMillis(conf.softMinEvictableIdleTimeMillis);
  setLifo(conf.lifo);
  allocate();
}

/**
 * Sets my configuration.
 *
 * @param conf configuration to use.
 * @see GenericObjectPool.Config
 */
public synchronized void setConfig(GenericObjectPool.Config conf) {
  setMaxIdle(conf.maxIdle);
  setMinIdle(conf.minIdle);
  setMaxActive(conf.maxActive);
  setMaxWait(conf.maxWait);
  setWhenExhaustedAction(conf.whenExhaustedAction);
  setTestOnBorrow(conf.testOnBorrow);
  setTestOnReturn(conf.testOnReturn);
  setTestWhileIdle(conf.testWhileIdle);
  setNumTestsPerEvictionRun(conf.numTestsPerEvictionRun);
  setMinEvictableIdleTimeMillis(conf.minEvictableIdleTimeMillis);
  setTimeBetweenEvictionRunsMillis(conf.timeBetweenEvictionRunsMillis);
  setSoftMinEvictableIdleTimeMillis(conf.softMinEvictableIdleTimeMillis);
  setLifo(conf.lifo);
  allocate();
}

/**
 * Creates a connection pool for this datasource.  This method only exists
 * so subclasses can replace the implementation class.
 */
protected void createConnectionPool() {
  // Create an object pool to contain our active connections
  GenericObjectPool gop;
  if ((abandonedConfig != null) && (abandonedConfig.getRemoveAbandoned())) {
    gop = new AbandonedObjectPool(null,abandonedConfig);
  }
  else {
    gop = new GenericObjectPool();
  }
  gop.setMaxActive(maxActive);
  gop.setMaxIdle(maxIdle);
  gop.setMinIdle(minIdle);
  gop.setMaxWait(maxWait);
  gop.setTestOnBorrow(testOnBorrow);
  gop.setTestOnReturn(testOnReturn);
  gop.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
  gop.setNumTestsPerEvictionRun(numTestsPerEvictionRun);
  gop.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
  gop.setTestWhileIdle(testWhileIdle);
  connectionPool = gop;
}

/**
 * Creates a connection pool for this datasource.  This method only exists
 * so subclasses can replace the implementation class.
 */
protected void createConnectionPool() {
  // Create an object pool to contain our active connections
  GenericObjectPool gop;
  if ((abandonedConfig != null) && (abandonedConfig.getRemoveAbandoned())) {
    gop = new AbandonedObjectPool(null,abandonedConfig);
  }
  else {
    gop = new GenericObjectPool();
  }
  gop.setMaxActive(maxActive);
  gop.setMaxIdle(maxIdle);
  gop.setMinIdle(minIdle);
  gop.setMaxWait(maxWait);
  gop.setTestOnBorrow(testOnBorrow);
  gop.setTestOnReturn(testOnReturn);
  gop.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
  gop.setNumTestsPerEvictionRun(numTestsPerEvictionRun);
  gop.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
  gop.setTestWhileIdle(testWhileIdle);
  connectionPool = gop;
}

/**
 * Sets my configuration.
 *
 * @param conf configuration to use.
 * @see GenericObjectPool.Config
 */
public void setConfig(GenericObjectPool.Config conf) {
  synchronized (this) {
    setMaxIdle(conf.maxIdle);
    setMinIdle(conf.minIdle);
    setMaxActive(conf.maxActive);
    setMaxWait(conf.maxWait);
    setWhenExhaustedAction(conf.whenExhaustedAction);
    setTestOnBorrow(conf.testOnBorrow);
    setTestOnReturn(conf.testOnReturn);
    setTestWhileIdle(conf.testWhileIdle);
    setNumTestsPerEvictionRun(conf.numTestsPerEvictionRun);
    setMinEvictableIdleTimeMillis(conf.minEvictableIdleTimeMillis);
    setTimeBetweenEvictionRunsMillis(conf.timeBetweenEvictionRunsMillis);
    setSoftMinEvictableIdleTimeMillis(conf.softMinEvictableIdleTimeMillis);
    setLifo(conf.lifo);
  }
  allocate();
}

/**
 * Sets my configuration.
 *
 * @param conf configuration to use.
 * @see GenericObjectPool.Config
 */
public void setConfig(GenericObjectPool.Config conf) {
  synchronized (this) {
    setMaxIdle(conf.maxIdle);
    setMinIdle(conf.minIdle);
    setMaxActive(conf.maxActive);
    setMaxWait(conf.maxWait);
    setWhenExhaustedAction(conf.whenExhaustedAction);
    setTestOnBorrow(conf.testOnBorrow);
    setTestOnReturn(conf.testOnReturn);
    setTestWhileIdle(conf.testWhileIdle);
    setNumTestsPerEvictionRun(conf.numTestsPerEvictionRun);
    setMinEvictableIdleTimeMillis(conf.minEvictableIdleTimeMillis);
    setTimeBetweenEvictionRunsMillis(conf.timeBetweenEvictionRunsMillis);
    setSoftMinEvictableIdleTimeMillis(conf.softMinEvictableIdleTimeMillis);
    setLifo(conf.lifo);
  }
  allocate();
}

private synchronized GenericObjectPool createPool() {
  if (closed) {
    throw new RedisException("Data source is closed");
  }
  if (connectionPool == null) {
    GenericObjectPool gop = new GenericObjectPool();
    gop.setMaxActive(maxActive);
    gop.setMaxIdle(maxIdle);
    gop.setMinIdle(minIdle);
    gop.setMaxWait(maxWait);
    gop.setTestOnBorrow(testOnBorrow);
    gop.setTestOnReturn(testOnReturn);
    gop.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
    gop.setNumTestsPerEvictionRun(numTestsPerEvictionRun);
    gop.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
    gop.setTestWhileIdle(testWhileIdle);
    connectionPool = gop;
    createConnectionFactory();
    try {
      for (int i = 0; i < initialSize; i++) {
        connectionPool.addObject();
      }
    } catch (Exception e) {
      throw new RedisException("Error preloading the connection pool", e);
    }
  }
  return connectionPool;
}

protected void configureGenericObjectPool(GenericObjectPool<AbstractSyslogWriter> genericObjectPool) throws SyslogRuntimeException {
  SyslogPoolConfigIF poolConfig = null;
  try {
    poolConfig = (SyslogPoolConfigIF) this.syslog.getConfig();
  } catch (ClassCastException cce) {
    throw new SyslogRuntimeException("config must implement interface SyslogPoolConfigIF");
  }
  genericObjectPool.setMaxActive(poolConfig.getMaxActive());
  genericObjectPool.setMaxIdle(poolConfig.getMaxIdle());
  genericObjectPool.setMaxWait(poolConfig.getMaxWait());
  genericObjectPool.setMinEvictableIdleTimeMillis(poolConfig.getMinEvictableIdleTimeMillis());
  genericObjectPool.setMinIdle(poolConfig.getMinIdle());
  genericObjectPool.setNumTestsPerEvictionRun(poolConfig.getNumTestsPerEvictionRun());
  genericObjectPool.setSoftMinEvictableIdleTimeMillis(poolConfig.getSoftMinEvictableIdleTimeMillis());
  genericObjectPool.setTestOnBorrow(poolConfig.isTestOnBorrow());
  genericObjectPool.setTestOnReturn(poolConfig.isTestOnReturn());
  genericObjectPool.setTestWhileIdle(poolConfig.isTestWhileIdle());
  genericObjectPool.setTimeBetweenEvictionRunsMillis(poolConfig.getTimeBetweenEvictionRunsMillis());
  genericObjectPool.setWhenExhaustedAction(poolConfig.getWhenExhaustedAction());
}

protected void configureGenericObjectPool(GenericObjectPool genericObjectPool) throws SyslogRuntimeException {
  SyslogPoolConfigIF poolConfig = null;
  try {
    poolConfig = (SyslogPoolConfigIF) this.syslog.getConfig();
  } catch (ClassCastException cce) {
    throw new SyslogRuntimeException("config must implement interface SyslogPoolConfigIF");
  }
  genericObjectPool.setMaxActive(poolConfig.getMaxActive());
  genericObjectPool.setMaxIdle(poolConfig.getMaxIdle());
  genericObjectPool.setMaxWait(poolConfig.getMaxWait());
  genericObjectPool.setMinEvictableIdleTimeMillis(poolConfig.getMinEvictableIdleTimeMillis());
  genericObjectPool.setMinIdle(poolConfig.getMinIdle());
  genericObjectPool.setNumTestsPerEvictionRun(poolConfig.getNumTestsPerEvictionRun());
  genericObjectPool.setSoftMinEvictableIdleTimeMillis(poolConfig.getSoftMinEvictableIdleTimeMillis());
  genericObjectPool.setTestOnBorrow(poolConfig.isTestOnBorrow());
  genericObjectPool.setTestOnReturn(poolConfig.isTestOnReturn());
  genericObjectPool.setTestWhileIdle(poolConfig.isTestWhileIdle());
  genericObjectPool.setTimeBetweenEvictionRunsMillis(poolConfig.getTimeBetweenEvictionRunsMillis());
  genericObjectPool.setWhenExhaustedAction(poolConfig.getWhenExhaustedAction());
}

Javadoc

When true, objects will be PoolableObjectFactory#validateObjectby the idle object evictor (if any). If an object fails to validate, it will be dropped from the pool.

Popular methods of GenericObjectPool

<init>
Create a new GenericObjectPool using the specified values.
returnObject
Returns an object instance to the pool. If #getMaxIdle() is set to a positive value and the number
borrowObject
Borrows an object from the pool. If there is an idle instance available in the pool, then either th
setMaxActive
Sets the cap on the number of objects that can be allocated by the pool (checked out to clients, or
close
Closes the pool. Once the pool is closed, #borrowObject()will fail with IllegalStateException, but #
setMaxIdle
Sets the cap on the number of "idle" instances in the pool. If maxIdle is set too low on heavily loa
setMinIdle
Sets the minimum number of objects allowed in the pool before the evictor thread (if active) spawns
setTimeBetweenEvictionRunsMillis
Sets the number of milliseconds to sleep between runs of the idle object evictor thread. When non-po
setMinEvictableIdleTimeMillis
Sets the minimum amount of time an object may sit idle in the pool before it is eligible for evictio
setMaxWait
Sets the maximum amount of time (in milliseconds) the #borrowObject method should block before throw
setTestOnBorrow
When true, objects will be PoolableObjectFactory#validateObjectbefore being returned by the #borrowO
setWhenExhaustedAction
Sets the action to take when the #borrowObject method is invoked when the pool is exhausted (the max

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How to use setTestWhileIdlemethodin org.apache.commons.pool.impl.GenericObjectPool

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setTestWhileIdle
method
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org.apache.commons.pool.impl.GenericObjectPool