com.hazelcast.cache.impl.client.CacheClearRequest Maven / Gradle / Ivy

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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.cache.impl.client;

import com.hazelcast.cache.impl.CacheOperationProvider;
import com.hazelcast.cache.impl.CachePortableHook;
import com.hazelcast.cache.impl.ICacheService;
import com.hazelcast.cache.impl.operation.CacheClearOperationFactory;
import com.hazelcast.client.impl.client.RetryableRequest;
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.security.permission.ActionConstants;
import com.hazelcast.security.permission.CachePermission;
import com.hazelcast.spi.OperationFactory;

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

/**
 * This client request  specifically calls {@link CacheClearOperationFactory} on the server side.
 *
 * @see com.hazelcast.cache.impl.operation.CacheClearOperationFactory
 */
public class CacheClearRequest
        extends AbstractCacheAllPartitionsRequest
        implements RetryableRequest {

    private Set keys;
    private boolean isRemoveAll;
    private int completionId;

    public CacheClearRequest() {
    }

    public CacheClearRequest(String name, Set keys, boolean isRemoveAll, int completionId) {
        super(name);
        this.keys = keys;
        this.isRemoveAll = isRemoveAll;
        this.completionId = completionId;
    }

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

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

    @Override
    public int getClassId() {
        return CachePortableHook.CLEAR;
    }

    @Override
    public void write(PortableWriter writer)
            throws IOException {
        super.write(writer);
        writer.writeInt("c", completionId);
        writer.writeBoolean("r", isRemoveAll);
        writer.writeBoolean("k", keys != null);
        if (keys != null) {
            if (!keys.isEmpty()) {
                ObjectDataOutput output = writer.getRawDataOutput();
                output.writeInt(keys.size());
                for (Data key : keys) {
                    output.writeData(key);
                }
            }
        }
    }

    @Override
    public void read(PortableReader reader)
            throws IOException {
        super.read(reader);
        completionId = reader.readInt("c");
        isRemoveAll = reader.readBoolean("r");
        final boolean isKeysNotNull = reader.readBoolean("k");
        if (isKeysNotNull) {
            ObjectDataInput input = reader.getRawDataInput();
            final int size = input.readInt();
            keys = new HashSet(size);
            if (size > 0) {
                for (int i = 0; i < size; i++) {
                    Data key = input.readData();
                    keys.add(key);
                }
            }
        }
    }

    @Override
    protected OperationFactory createOperationFactory() {
        CacheOperationProvider operationProvider = getOperationProvider();
        if (isRemoveAll) {
            return operationProvider.createRemoveAllOperationFactory(keys, completionId);
        }
        return operationProvider.createClearOperationFactory();
    }

    @Override
    protected Object reduce(Map map) {
        return map;
    }

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

    @Override
    public Object[] getParameters() {
        if (keys == null) {
            return null;
        }

        return new Object[]{keys};
    }

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

        return "clear";
    }

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

}