package com.hazelcast.map.client;
import com.hazelcast.client.MultiPartitionClientRequest;
import com.hazelcast.client.SecureRequest;
import com.hazelcast.map.EntryProcessor;
import com.hazelcast.map.MapEntrySet;
import com.hazelcast.map.MapPortableHook;
import com.hazelcast.map.MapService;
import com.hazelcast.map.operation.MultipleEntryOperationFactory;
import com.hazelcast.nio.ObjectDataInput;
import com.hazelcast.nio.ObjectDataOutput;
import com.hazelcast.nio.serialization.Data;
import com.hazelcast.nio.serialization.Portable;
import com.hazelcast.nio.serialization.PortableReader;
import com.hazelcast.nio.serialization.PortableWriter;
import com.hazelcast.partition.InternalPartitionService;
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.*;
/**
* date: 20/12/13
* author: eminn
*/
public class MapExecuteOnKeysRequest extends MultiPartitionClientRequest implements Portable,SecureRequest {
private String name;
private EntryProcessor processor;
private Set<Data> keys;
public MapExecuteOnKeysRequest() {
}
public MapExecuteOnKeysRequest(String name, EntryProcessor processor, Set<Data> keys) {
this.name = name;
this.processor = processor;
this.keys = keys;
}
@Override
protected OperationFactory createOperationFactory() {
return new MultipleEntryOperationFactory(name,keys,processor);
}
@Override
protected Object reduce(Map<Integer, Object> map) {
MapEntrySet result = new MapEntrySet();
MapService mapService = getService();
for (Object o : map.values()) {
if (o != null) {
MapEntrySet entrySet = (MapEntrySet)mapService.toObject(o);
Set<Map.Entry<Data,Data>> entries = entrySet.getEntrySet();
for (Map.Entry<Data, Data> entry : entries) {
result.add(entry);
}
}
}
return result;
}
@Override
public Collection<Integer> getPartitions() {
InternalPartitionService partitionService = getClientEngine().getPartitionService();
int partitions = partitionService.getPartitionCount();
int capacity = Math.min(partitions, keys.size()); //todo: is there better way to estimate size?
Set<Integer> partitionIds = new HashSet<Integer>(capacity);
Iterator<Data> iterator = keys.iterator();
while (iterator.hasNext() && partitionIds.size() < partitions){
Data key = iterator.next();
partitionIds.add(partitionService.getPartitionId(key));
}
return partitionIds;
}
@Override
public String getServiceName() {
return MapService.SERVICE_NAME;
}
@Override
public int getFactoryId() {
return MapPortableHook.F_ID;
}
@Override
public int getClassId() {
return MapPortableHook.EXECUTE_ON_KEYS;
}
@Override
public void write(PortableWriter writer) throws IOException {
writer.writeUTF("n",name);
writer.writeInt("size", keys.size());
ObjectDataOutput output = writer.getRawDataOutput();
for (Data key : keys) {
key.writeData(output);
}
output.writeObject(processor);
}
@Override
public void read(PortableReader reader) throws IOException {
name = reader.readUTF("n");
int size = reader.readInt("size");
keys = new HashSet<Data>();
ObjectDataInput input = reader.getRawDataInput();
for (int i = 0; i < size; i++) {
Data key = new Data();
key.readData(input);
keys.add(key);
}
processor = input.readObject();
}
@Override
public Permission getRequiredPermission() {
return new MapPermission(name, ActionConstants.ACTION_PUT, ActionConstants.ACTION_REMOVE);
}
}