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Core Hazelcast Module
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/*
 * Copyright (c) 2008-2016, Hazelcast, 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.
 */

package com.hazelcast.collection.impl.queue.client;

import com.hazelcast.nio.ObjectDataInput;
import com.hazelcast.nio.ObjectDataOutput;
import com.hazelcast.nio.serialization.Data;
import com.hazelcast.nio.serialization.PortableReader;
import com.hazelcast.nio.serialization.PortableWriter;
import com.hazelcast.collection.impl.queue.operations.CompareAndRemoveOperation;
import com.hazelcast.collection.impl.queue.QueuePortableHook;
import com.hazelcast.security.permission.ActionConstants;
import com.hazelcast.security.permission.QueuePermission;
import com.hazelcast.spi.Operation;

import java.io.IOException;
import java.security.Permission;
import java.util.ArrayList;
import java.util.Collection;

/**
 * Provides the request service for {@link com.hazelcast.collection.impl.queue.operations.CompareAndRemoveOperation}
 */
public class CompareAndRemoveRequest extends QueueRequest {

    private Collection dataList;
    private boolean retain;

    public CompareAndRemoveRequest() {
    }

    public CompareAndRemoveRequest(String name, Collection dataList, boolean retain) {
        super(name);
        this.dataList = dataList;
        this.retain = retain;
    }

    @Override
    protected Operation prepareOperation() {
        return new CompareAndRemoveOperation(name, dataList, retain);
    }

    @Override
    public int getClassId() {
        return QueuePortableHook.COMPARE_AND_REMOVE;
    }

    @Override
    public void write(PortableWriter writer) throws IOException {
        super.write(writer);
        writer.writeBoolean("r", retain);
        writer.writeInt("s", dataList.size());
        final ObjectDataOutput out = writer.getRawDataOutput();
        for (Data data : dataList) {
            out.writeData(data);
        }
    }

    @Override
    public void read(PortableReader reader) throws IOException {
        super.read(reader);
        retain = reader.readBoolean("r");
        int size = reader.readInt("s");
        final ObjectDataInput in = reader.getRawDataInput();
        dataList = new ArrayList(size);
        for (int i = 0; i < size; i++) {
            Data data = in.readData();
            dataList.add(data);
        }
    }

    @Override
    public Permission getRequiredPermission() {
        return new QueuePermission(name, ActionConstants.ACTION_REMOVE);
    }

    @Override
    public String getMethodName() {
        if (retain) {
            return "retainAll";
        }
        return "removeAll";
    }

    @Override
    public Object[] getParameters() {
        return new Object[] {dataList};
    }
}