/*
 * Copyright (c) 2008-2012, Hazel Bilisim Ltd. 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.
 */

package com.hazelcast.web.tomcat;

import com.hazelcast.nio.DataSerializable;
import com.hazelcast.nio.SerializationHelper;

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

/**
 * @author ali
 */

public class HazelcastAttribute implements DataSerializable {

    private String sessionId = null;

    private String name = null;

    private Object value = null;

    private transient Set<Long> touchedByRequest = null;

    public HazelcastAttribute() {
        touchedByRequest = Collections.synchronizedSet(new HashSet<Long>());
    }

    public HazelcastAttribute(String sessionId, String name, Object value) {
        this();
        this.sessionId = sessionId;
        this.name = name;
        this.value = value;
    }

    public String getSessionId() {
        return sessionId;
    }

    public String getName() {
        return name;
    }

    public Object getValue() {
        return value;
    }

    public void setValue(Object value) {
        this.value = value;
    }

    public void touch(long requestId) {
        touchedByRequest.add(requestId);
    }

    public boolean isTouched(long requestId) {
        return touchedByRequest.remove(requestId);
    }

    public String getKey() {
        return sessionId + "_" + name;
    }

    public void writeData(DataOutput out) throws IOException {
        out.writeUTF(sessionId);
        out.writeUTF(name);
        SerializationHelper.writeObject(out, value);
    }

    public void readData(DataInput in) throws IOException {
        sessionId = in.readUTF();
        name = in.readUTF();
        value = SerializationHelper.readObject(in);
    }

    @Override
    public String toString() {
        return "HazelcastAttribute [sessionId=" + sessionId + ", name=" + name
                + ", value=" + value + "]";
    }
}