com.gemstone.gemfire.internal.cache.InterestRegistrationEventImpl Maven / Gradle / Ivy

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SnappyData store based off Pivotal GemFireXD
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/*
 * Copyright (c) 2010-2015 Pivotal Software, Inc. All rights reserved.
 *
 * 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. See accompanying
 * LICENSE file.
 */
package com.gemstone.gemfire.internal.cache;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;

import com.gemstone.gemfire.DataSerializable;
import com.gemstone.gemfire.DataSerializer;
import com.gemstone.gemfire.cache.Cache;
import com.gemstone.gemfire.cache.ClientSession;
import com.gemstone.gemfire.cache.InterestRegistrationEvent;
import com.gemstone.gemfire.cache.Region;
import com.gemstone.gemfire.internal.cache.tier.InterestType;
import com.gemstone.gemfire.internal.cache.tier.sockets.CacheClientProxy;

public class InterestRegistrationEventImpl implements
    InterestRegistrationEvent, DataSerializable {

  private static final long serialVersionUID = -5791294858933070049L;

  /**
   * The name of the region to which this interest event belongs
   */
  private String regionName;

  /**
   * The Set of keys being registered or unregistered
   */
  private Set keysOfInterest;

  /**
   * The type of interest
   */
  private int interestType;

  /**
   * Whether this interest event represents an interest registration
   */
  private boolean isRegister;
  
  /** 
   * The ClientSession initiating this interest event 
   */ 
  private transient ClientSession clientSession; 
  
  /**
   * The GemFire Cache
   */
  private transient Cache cache; 

  /**
   * Constructor. No-arg constructor for data serialization.
   */
  public InterestRegistrationEventImpl() {
  }

  /**
   * Constructor.
   *
   * @param regionName
   *          The name of the region to which this interest event belongs
   */

  public InterestRegistrationEventImpl(CacheClientProxy clientSession, String regionName, Set keysOfInterest,
      int interestType, boolean isRegister) {
    this.cache = clientSession.getCache();
    this.clientSession = clientSession;
    this.regionName = regionName;
    this.keysOfInterest = keysOfInterest;
    this.interestType = interestType;
    this.isRegister = isRegister;
  }

  
  public ClientSession getClientSession() {
    return this.clientSession;
  }
  
  public String getRegionName() {
    return this.regionName;
  }
  
  public Region getRegion() {
    return this.cache.getRegion(this.regionName);
  }
  
  public Set getKeysOfInterest() {
    return this.keysOfInterest;
  }

  public int getInterestType() {
    return this.interestType;
  }

  public boolean isRegister() {
    return this.isRegister;
  }

  public boolean isKey() {
    return this.interestType == InterestType.KEY;
  }

  public boolean isRegularExpression() {
    return this.interestType == InterestType.REGULAR_EXPRESSION;
  }

  public void toData(DataOutput out) throws IOException {
    // The proxy isn't being serialized right now, but if it needs to be 
    // then the proxyId would probably be the best way to do it. 
    DataSerializer.writeString(this.regionName, out);
    DataSerializer.writeHashSet((HashSet)this.keysOfInterest, out);
    DataSerializer.writePrimitiveInt(this.interestType, out);
    DataSerializer.writePrimitiveBoolean(this.isRegister, out);
  }

  public void fromData(DataInput in) throws IOException, ClassNotFoundException {
    this.regionName = DataSerializer.readString(in);
    this.keysOfInterest = DataSerializer.readHashSet(in);
    this.interestType = DataSerializer.readPrimitiveInt(in);
    this.isRegister = DataSerializer.readPrimitiveBoolean(in);
  }

  @Override // GemStoneAddition
  public String toString() {
    StringBuffer buffer = new StringBuffer();
    buffer.append("InterestRegistrationEvent [").append("isRegister=").append(
        this.isRegister).append("clientSession=").append(this.clientSession)
        .append("; isRegister=").append("; regionName=")
        .append(this.regionName).append("; keysOfInterest=").append(
            this.keysOfInterest).append("; interestType=").append(
            InterestType.getString(this.interestType)).append("]");
    return buffer.toString();
  }
}