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MapFetchKeysMessageTask.java
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MapFetchKeysMessageTask.java
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/*
* Copyright (c) 2008-2023, 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.client.impl.protocol.task.map;
import com.hazelcast.client.impl.protocol.ClientMessage;
import com.hazelcast.client.impl.protocol.codec.MapFetchKeysCodec;
import com.hazelcast.instance.impl.Node;
import com.hazelcast.internal.iteration.IterationPointer;
import com.hazelcast.internal.nio.Connection;
import com.hazelcast.map.impl.MapService;
import com.hazelcast.map.impl.iterator.MapKeysWithCursor;
import com.hazelcast.map.impl.operation.MapOperationProvider;
import com.hazelcast.security.permission.ActionConstants;
import com.hazelcast.security.permission.MapPermission;
import com.hazelcast.spi.impl.operationservice.Operation;
import java.security.Permission;
import java.util.Collections;
import static com.hazelcast.internal.iteration.IterationPointer.decodePointers;
import static com.hazelcast.internal.iteration.IterationPointer.encodePointers;
public class MapFetchKeysMessageTask extends AbstractMapPartitionMessageTask<MapFetchKeysCodec.RequestParameters> {
public MapFetchKeysMessageTask(ClientMessage clientMessage, Node node, Connection connection) {
super(clientMessage, node, connection);
}
@Override
protected Operation prepareOperation() {
MapOperationProvider operationProvider = getMapOperationProvider(parameters.name);
IterationPointer[] pointers = decodePointers(parameters.iterationPointers);
return operationProvider.createFetchKeysOperation(parameters.name, pointers, parameters.batch);
}
@Override
protected MapFetchKeysCodec.RequestParameters decodeClientMessage(ClientMessage clientMessage) {
return MapFetchKeysCodec.decodeRequest(clientMessage);
}
@Override
protected ClientMessage encodeResponse(Object response) {
if (response == null) {
return MapFetchKeysCodec.encodeResponse(Collections.emptyList(), Collections.emptyList());
}
MapKeysWithCursor mapKeysWithCursor = (MapKeysWithCursor) response;
IterationPointer[] pointers = mapKeysWithCursor.getIterationPointers();
return MapFetchKeysCodec.encodeResponse(
encodePointers(pointers), mapKeysWithCursor.getBatch());
}
@Override
public String getServiceName() {
return MapService.SERVICE_NAME;
}
@Override
public Permission getRequiredPermission() {
return new MapPermission(parameters.name, ActionConstants.ACTION_READ);
}
@Override
public String getDistributedObjectName() {
return parameters.name;
}
@Override
public String getMethodName() {
return "iterator";
}
@Override
public Object[] getParameters() {
return new Object[0];
}
}