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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.map.impl.client;

import com.hazelcast.map.EntryProcessor;
import com.hazelcast.map.impl.MapEntries;
import com.hazelcast.map.impl.MapPortableHook;
import com.hazelcast.map.impl.MapService;
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.query.Predicate;
import com.hazelcast.security.permission.ActionConstants;
import com.hazelcast.security.permission.MapPermission;
import com.hazelcast.spi.OperationFactory;

import java.io.IOException;
import java.security.Permission;
import java.util.Map;

public class MapExecuteWithPredicateRequest extends MapAllPartitionsClientRequest {
    private EntryProcessor processor;
    private Predicate predicate;

    public MapExecuteWithPredicateRequest() {
    }

    public MapExecuteWithPredicateRequest(String name, EntryProcessor processor, Predicate predicate) {
        super(name);
        this.processor = processor;
        this.predicate = predicate;
    }

    @Override
    protected OperationFactory createOperationFactory() {
        return getOperationProvider()
                .createPartitionWideEntryWithPredicateOperationFactory(name, processor, predicate);
    }

    @Override
    protected Object reduce(Map map) {
        MapEntries result = new MapEntries();
        MapService mapService = getService();
        for (Object o : map.values()) {
            if (o != null) {
                MapEntries entries = (MapEntries) mapService.getMapServiceContext().toObject(o);
                for (Map.Entry entry : entries) {
                    result.add(entry);
                }
            }
        }
        return result;
    }

    public String getServiceName() {
        return MapService.SERVICE_NAME;
    }

    @Override
    public int getFactoryId() {
        return MapPortableHook.F_ID;
    }

    public int getClassId() {
        return MapPortableHook.EXECUTE_WITH_PREDICATE;
    }

    public void write(PortableWriter writer) throws IOException {
        writer.writeUTF("n", name);
        final ObjectDataOutput out = writer.getRawDataOutput();
        out.writeObject(processor);
        out.writeObject(predicate);
    }

    public void read(PortableReader reader) throws IOException {
        name = reader.readUTF("n");
        final ObjectDataInput in = reader.getRawDataInput();
        processor = in.readObject();
        predicate = in.readObject();
    }

    public Permission getRequiredPermission() {
        return new MapPermission(name, ActionConstants.ACTION_PUT, ActionConstants.ACTION_REMOVE);
    }

    @Override
    public String getDistributedObjectName() {
        return name;
    }

    @Override
    public String getMethodName() {
        return "executeOnEntries";
    }

    @Override
    public Object[] getParameters() {
        return new Object[]{processor, predicate};
    }
}