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Java-based middleware for in-memory processing of big data in a distributed environment.
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.ignite.internal.visor.query;
import java.util.Iterator;
import java.util.List;
import org.apache.ignite.internal.processors.task.GridInternal;
import org.apache.ignite.internal.util.typedef.internal.S;
import org.apache.ignite.internal.util.typedef.internal.U;
import org.apache.ignite.internal.visor.VisorJob;
import org.apache.ignite.internal.visor.VisorOneNodeTask;
import static org.apache.ignite.internal.visor.query.VisorQueryUtils.getQueryHolder;
import static org.apache.ignite.internal.visor.query.VisorQueryUtils.removeQueryHolder;
/**
* Task for collecting next page previously executed SQL or SCAN query.
*/
@GridInternal
public class VisorQueryNextPageTask extends VisorOneNodeTask {
/** */
private static final long serialVersionUID = 0L;
/** {@inheritDoc} */
@Override protected VisorQueryNextPageJob job(VisorQueryNextPageTaskArg arg) {
return new VisorQueryNextPageJob(arg, debug);
}
/**
* Job for collecting next page previously executed SQL or SCAN query.
*/
private static class VisorQueryNextPageJob extends VisorJob {
/** */
private static final long serialVersionUID = 0L;
/**
* Create job with specified argument.
*
* @param arg Job argument.
* @param debug Debug flag.
*/
private VisorQueryNextPageJob(VisorQueryNextPageTaskArg arg, boolean debug) {
super(arg, debug);
}
/** {@inheritDoc} */
@Override protected VisorQueryResult run(VisorQueryNextPageTaskArg arg) {
long start = U.currentTimeMillis();
String qryId = arg.getQueryId();
VisorQueryHolder holder = getQueryHolder(ignite, qryId);
Iterator itr = holder.getIterator();
List