com.hazelcast.client.impl.protocol.codec.MapDeleteCodec Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of hazelcast-java-client Show documentation
Hazelcast Java Client
The newest version!
/*
 * Copyright (c) 2008-2024, 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.codec;

import com.hazelcast.client.impl.protocol.ClientMessage;
import com.hazelcast.client.impl.protocol.Generated;
import com.hazelcast.client.impl.protocol.codec.builtin.DataCodec;
import com.hazelcast.client.impl.protocol.codec.builtin.StringCodec;

import static com.hazelcast.client.impl.protocol.ClientMessage.ForwardFrameIterator;
import static com.hazelcast.client.impl.protocol.ClientMessage.Frame;
import static com.hazelcast.client.impl.protocol.ClientMessage.PARTITION_ID_FIELD_OFFSET;
import static com.hazelcast.client.impl.protocol.ClientMessage.RESPONSE_BACKUP_ACKS_FIELD_OFFSET;
import static com.hazelcast.client.impl.protocol.ClientMessage.TYPE_FIELD_OFFSET;
import static com.hazelcast.client.impl.protocol.ClientMessage.UNFRAGMENTED_MESSAGE;
import static com.hazelcast.client.impl.protocol.codec.builtin.FixedSizeTypesCodec.BOOLEAN_SIZE_IN_BYTES;
import static com.hazelcast.client.impl.protocol.codec.builtin.FixedSizeTypesCodec.BYTE_SIZE_IN_BYTES;
import static com.hazelcast.client.impl.protocol.codec.builtin.FixedSizeTypesCodec.INT_SIZE_IN_BYTES;
import static com.hazelcast.client.impl.protocol.codec.builtin.FixedSizeTypesCodec.LONG_SIZE_IN_BYTES;
import static com.hazelcast.client.impl.protocol.codec.builtin.FixedSizeTypesCodec.decodeBoolean;
import static com.hazelcast.client.impl.protocol.codec.builtin.FixedSizeTypesCodec.decodeLong;
import static com.hazelcast.client.impl.protocol.codec.builtin.FixedSizeTypesCodec.encodeBoolean;
import static com.hazelcast.client.impl.protocol.codec.builtin.FixedSizeTypesCodec.encodeInt;
import static com.hazelcast.client.impl.protocol.codec.builtin.FixedSizeTypesCodec.encodeLong;

/*
 * This file is auto-generated by the Hazelcast Client Protocol Code Generator.
 * To change this file, edit the templates or the protocol
 * definitions on the https://github.com/hazelcast/hazelcast-client-protocol
 * and regenerate it.
 */

/**
 * Removes the mapping for a key from this map if it is present.Unlike remove(Object), this operation does not return
 * the removed value, which avoids the serialization cost of the returned value.If the removed value will not be used,
 * a delete operation is preferred over a remove operation for better performance. The map will not contain a mapping
 * for the specified key once the call returns.
 * This method breaks the contract of EntryListener. When an entry is removed by delete(), it fires an EntryEvent
 * with a null oldValue. Also, a listener with predicates will have null values, so only keys can be queried via predicates
 */
@SuppressWarnings("unused")
@Generated("ef7af7a622f146afce3944fdd7426ac7")
public final class MapDeleteCodec {
    //hex: 0x010900
    public static final int REQUEST_MESSAGE_TYPE = 67840;
    //hex: 0x010901
    public static final int RESPONSE_MESSAGE_TYPE = 67841;
    private static final int REQUEST_THREAD_ID_FIELD_OFFSET = PARTITION_ID_FIELD_OFFSET + INT_SIZE_IN_BYTES;
    private static final int REQUEST_INITIAL_FRAME_SIZE = REQUEST_THREAD_ID_FIELD_OFFSET + LONG_SIZE_IN_BYTES;
    private static final int RESPONSE_RESPONSE_FIELD_OFFSET = RESPONSE_BACKUP_ACKS_FIELD_OFFSET + BYTE_SIZE_IN_BYTES;
    private static final int RESPONSE_INITIAL_FRAME_SIZE = RESPONSE_RESPONSE_FIELD_OFFSET + BOOLEAN_SIZE_IN_BYTES;

    private MapDeleteCodec() {
    }

    @edu.umd.cs.findbugs.annotations.SuppressFBWarnings({"URF_UNREAD_PUBLIC_OR_PROTECTED_FIELD"})
    public static class RequestParameters {

        /**
         * Name of the map.
         */
        public String name;

        /**
         * Key for the map entry.
         */
        public com.hazelcast.internal.serialization.Data key;

        /**
         * The id of the user thread performing the operation. It is used to guarantee that only the lock holder thread (if a lock exists on the entry) can perform the requested operation.
         */
        public long threadId;
    }

    public static ClientMessage encodeRequest(String name, com.hazelcast.internal.serialization.Data key, long threadId) {
        ClientMessage clientMessage = ClientMessage.createForEncode();
        clientMessage.setContainsSerializedDataInRequest(true);
        clientMessage.setRetryable(false);
        clientMessage.setOperationName("Map.Delete");
        Frame initialFrame = new Frame(new byte[REQUEST_INITIAL_FRAME_SIZE], UNFRAGMENTED_MESSAGE);
        encodeInt(initialFrame.content, TYPE_FIELD_OFFSET, REQUEST_MESSAGE_TYPE);
        encodeInt(initialFrame.content, PARTITION_ID_FIELD_OFFSET, -1);
        encodeLong(initialFrame.content, REQUEST_THREAD_ID_FIELD_OFFSET, threadId);
        clientMessage.add(initialFrame);
        StringCodec.encode(clientMessage, name);
        DataCodec.encode(clientMessage, key);
        return clientMessage;
    }

    public static RequestParameters decodeRequest(ClientMessage clientMessage) {
        ForwardFrameIterator iterator = clientMessage.frameIterator();
        RequestParameters request = new RequestParameters();
        Frame initialFrame = iterator.next();
        request.threadId = decodeLong(initialFrame.content, REQUEST_THREAD_ID_FIELD_OFFSET);
        request.name = StringCodec.decode(iterator);
        request.key = DataCodec.decode(iterator);
        return request;
    }

    @edu.umd.cs.findbugs.annotations.SuppressFBWarnings({"URF_UNREAD_PUBLIC_OR_PROTECTED_FIELD"})
    public static class ResponseParameters {

        /**
         * Returns true if the key exists and removed, otherwise returns false.
         */
        public boolean response;

        /**
         * True if the response is received from the member, false otherwise.
         * If this is false, response has the default value for its type.
         */
        public boolean isResponseExists;
    }

    public static ClientMessage encodeResponse(boolean response) {
        ClientMessage clientMessage = ClientMessage.createForEncode();
        Frame initialFrame = new Frame(new byte[RESPONSE_INITIAL_FRAME_SIZE], UNFRAGMENTED_MESSAGE);
        encodeInt(initialFrame.content, TYPE_FIELD_OFFSET, RESPONSE_MESSAGE_TYPE);
        encodeBoolean(initialFrame.content, RESPONSE_RESPONSE_FIELD_OFFSET, response);
        clientMessage.add(initialFrame);

        return clientMessage;
    }

    public static ResponseParameters decodeResponse(ClientMessage clientMessage) {
        ForwardFrameIterator iterator = clientMessage.frameIterator();
        ResponseParameters response = new ResponseParameters();
        Frame initialFrame = iterator.next();
        if (initialFrame.content.length >= RESPONSE_RESPONSE_FIELD_OFFSET + BOOLEAN_SIZE_IN_BYTES) {
            response.response = decodeBoolean(initialFrame.content, RESPONSE_RESPONSE_FIELD_OFFSET);
            response.isResponseExists = true;
        } else {
            response.isResponseExists = false;
        }
        return response;
    }
}