com.hazelcast.map.impl.query.QueryOperation 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.map.impl.query;

import com.hazelcast.core.MemberLeftException;
import com.hazelcast.map.impl.operation.MapOperation;
import com.hazelcast.nio.ObjectDataInput;
import com.hazelcast.nio.ObjectDataOutput;
import com.hazelcast.query.Predicate;
import com.hazelcast.spi.ExceptionAction;
import com.hazelcast.spi.ReadonlyOperation;
import com.hazelcast.spi.exception.TargetNotMemberException;
import com.hazelcast.util.IterationType;

import java.io.IOException;

import static com.hazelcast.spi.ExceptionAction.THROW_EXCEPTION;

public class QueryOperation extends MapOperation implements ReadonlyOperation {

    private Predicate predicate;
    private QueryResult result;
    private IterationType iterationType;

    public QueryOperation() {
    }

    public QueryOperation(String mapName, Predicate predicate, IterationType iterationType) {
        super(mapName);
        this.predicate = predicate;
        this.iterationType = iterationType;
    }

    @Override
    public void run() throws Exception {
        MapQueryEngine queryEngine = mapService.getMapServiceContext().getMapQueryEngine(name);
        result = queryEngine.queryLocalPartitions(name, predicate, iterationType);
    }

    @Override
    public ExceptionAction onInvocationException(Throwable throwable) {
        if (throwable instanceof MemberLeftException || throwable instanceof TargetNotMemberException) {
            return THROW_EXCEPTION;
        }
        return super.onInvocationException(throwable);
    }

    @Override
    public Object getResponse() {
        return result;
    }

    @Override
    protected void writeInternal(ObjectDataOutput out) throws IOException {
        super.writeInternal(out);
        out.writeUTF(name);
        out.writeObject(predicate);
        out.writeByte(iterationType.getId());
    }

    @Override
    protected void readInternal(ObjectDataInput in) throws IOException {
        super.readInternal(in);
        name = in.readUTF();
        predicate = in.readObject();
        iterationType = IterationType.getById(in.readByte());
    }
}