src/org/objectweb/cjdbc/common/monitor/client/AbstractClientDataCollector.java

説明を見る。

package org.objectweb.cjdbc.common.monitor.client;

import java.util.ArrayList;

import org.objectweb.cjdbc.common.exceptions.DataCollectorException;
import org.objectweb.cjdbc.common.exceptions.ExceptionTypes;
import org.objectweb.cjdbc.common.monitor.AbstractDataCollector;
import org.objectweb.cjdbc.controller.core.Controller;
import org.objectweb.cjdbc.controller.virtualdatabase.VirtualDatabase;
import org.objectweb.cjdbc.controller.virtualdatabase.VirtualDatabaseWorkerThread;

public abstract class AbstractClientDataCollector extends AbstractDataCollector
{
  private String virtualDatabaseName;
  private String clientId;
  private int    clientIndex;

  public AbstractClientDataCollector(String virtualDatabaseName, String clientId)
      throws DataCollectorException
  {
    super();
    this.virtualDatabaseName = virtualDatabaseName;
    this.clientId = clientId;
    setClientIndex();
  }

  private Object setClientIndex() throws DataCollectorException
  {
    VirtualDatabase vdb = ((Controller)controller).getVirtualDatabase(
        virtualDatabaseName);
    ArrayList activeThreads = vdb.getActiveThreads();
    int size = activeThreads.size();
    VirtualDatabaseWorkerThread client = null;
    int index = 0;
    for (index = 0; index < size; index++)
    {
      client = ((VirtualDatabaseWorkerThread) activeThreads.get(index));
      if (client.getUser().equals(clientId))
        break;
      else
        client = null;
    }

    if (client == null)
      throw new DataCollectorException(ExceptionTypes.CLIENT_NOT_FOUND);
    else
    {
      this.clientIndex = index;
      return client;
    }
  }

  private Object checkClientIndex() throws DataCollectorException
  {
    VirtualDatabase vdb = ((Controller)controller).getVirtualDatabase(
        virtualDatabaseName);
    ArrayList activeThreads = vdb.getActiveThreads();
    VirtualDatabaseWorkerThread client = (VirtualDatabaseWorkerThread) activeThreads
        .get(clientIndex);
    if (client.getUser().equals(clientId))
      return client;
    else
    {
      return setClientIndex();
    }
  }

  public long collectValue() throws DataCollectorException
  {
    VirtualDatabaseWorkerThread client = (VirtualDatabaseWorkerThread) checkClientIndex();
    return this.getValue(client);
  }

  public abstract long getValue(Object client);

  public String getTargetName()
  {
    return clientId;
  }
}

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