/*
* Copyright (c) 2008-2013, 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.operation;
import com.hazelcast.core.ManagedContext;
import com.hazelcast.map.EntryBackupProcessor;
import com.hazelcast.map.EntryProcessor;
import com.hazelcast.map.impl.record.Record;
import com.hazelcast.nio.ObjectDataInput;
import com.hazelcast.nio.ObjectDataOutput;
import com.hazelcast.nio.serialization.Data;
import com.hazelcast.nio.serialization.SerializationService;
import com.hazelcast.query.Predicate;
import com.hazelcast.query.impl.QueryEntry;
import com.hazelcast.spi.BackupAwareOperation;
import com.hazelcast.spi.Operation;
import java.io.IOException;
import java.util.Iterator;
import java.util.Map;
/**
* GOTCHA : This operation does NOT load missing keys from map-store for now.
*/
public class PartitionWideEntryOperation extends AbstractMultipleEntryOperation implements BackupAwareOperation {
public PartitionWideEntryOperation(String name, EntryProcessor entryProcessor) {
super(name, entryProcessor);
}
public PartitionWideEntryOperation() {
}
@Override
public void innerBeforeRun() {
super.innerBeforeRun();
final SerializationService serializationService = getNodeEngine().getSerializationService();
final ManagedContext managedContext = serializationService.getManagedContext();
managedContext.initialize(entryProcessor);
}
@Override
public void run() {
final long now = getNow();
final Iterator<Record> iterator = recordStore.iterator(now, false);
while (iterator.hasNext()) {
final Record record = iterator.next();
final Data dataKey = record.getKey();
final Object oldValue = record.getValue();
final Object key = toObject(dataKey);
final Object value = toObject(oldValue);
if (!applyPredicate(dataKey, key, value)) {
continue;
}
final Map.Entry entry = createMapEntry(key, value);
final Data response = process(entry);
addToResponses(dataKey, response);
// first call noOp, other if checks below depends on it.
if (noOp(entry, oldValue)) {
continue;
}
if (entryRemoved(entry, dataKey, oldValue, now)) {
continue;
}
entryAddedOrUpdated(entry, dataKey, oldValue, now);
}
}
@Override
public boolean returnsResponse() {
return true;
}
@Override
public Object getResponse() {
return responses;
}
@Override
protected void readInternal(ObjectDataInput in) throws IOException {
super.readInternal(in);
entryProcessor = in.readObject();
}
@Override
protected void writeInternal(ObjectDataOutput out) throws IOException {
super.writeInternal(out);
out.writeObject(entryProcessor);
}
@Override
public String toString() {
return "PartitionWideEntryOperation{}";
}
public boolean shouldBackup() {
return entryProcessor.getBackupProcessor() != null;
}
public int getSyncBackupCount() {
return 0;
}
public int getAsyncBackupCount() {
return mapContainer.getTotalBackupCount();
}
@Override
public Operation getBackupOperation() {
EntryBackupProcessor backupProcessor = entryProcessor.getBackupProcessor();
return backupProcessor != null ? new PartitionWideEntryBackupOperation(name, backupProcessor) : null;
}
private boolean applyPredicate(Data dataKey, Object key, Object value) {
if (getPredicate() == null) {
return true;
}
final SerializationService ss = getNodeEngine().getSerializationService();
QueryEntry queryEntry = new QueryEntry(ss, dataKey, key, value);
return getPredicate().apply(queryEntry);
}
protected Predicate getPredicate() {
return null;
}
}