com.datastax.dse.protocol.internal.request.Revise Maven / Gradle / Ivy
/*
* Copyright DataStax, Inc.
*
* 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.datastax.dse.protocol.internal.request;
import com.datastax.dse.protocol.internal.DseProtocolConstants;
import com.datastax.oss.protocol.internal.Message;
import com.datastax.oss.protocol.internal.PrimitiveCodec;
import com.datastax.oss.protocol.internal.PrimitiveSizes;
public class Revise extends Message {
public static Revise cancelContinuousPaging(int streamId) {
return new Revise(DseProtocolConstants.RevisionType.CANCEL_CONTINUOUS_PAGING, streamId, -1);
}
public static Revise requestMoreContinuousPages(int streamId, int amount) {
return new Revise(DseProtocolConstants.RevisionType.MORE_CONTINUOUS_PAGES, streamId, amount);
}
/** @see DseProtocolConstants.RevisionType */
public final int revisionType;
public final int streamId;
public final int nextPages;
public Revise(int revisionType, int streamId, int nextPages) {
super(false, DseProtocolConstants.Opcode.REVISE_REQUEST);
this.revisionType = revisionType;
this.streamId = streamId;
this.nextPages = nextPages;
}
public static class Codec extends Message.Codec {
public Codec(int protocolVersion) {
super(DseProtocolConstants.Opcode.REVISE_REQUEST, protocolVersion);
}
@Override
public void encode(B dest, Message message, PrimitiveCodec encoder) {
Revise revise = (Revise) message;
encoder.writeInt(revise.revisionType, dest);
encoder.writeInt(revise.streamId, dest);
if (revise.revisionType == DseProtocolConstants.RevisionType.MORE_CONTINUOUS_PAGES) {
encoder.writeInt(revise.nextPages, dest);
}
}
@Override
public int encodedSize(Message message) {
Revise revise = (Revise) message;
return PrimitiveSizes.INT
* (revise.revisionType == DseProtocolConstants.RevisionType.MORE_CONTINUOUS_PAGES
? 3
: 2);
}
@Override
public Message decode(B source, PrimitiveCodec decoder) {
int revisionType = decoder.readInt(source);
int streamId = decoder.readInt(source);
int nextPages =
(revisionType == DseProtocolConstants.RevisionType.MORE_CONTINUOUS_PAGES)
? decoder.readInt(source)
: -1;
return new Revise(revisionType, streamId, nextPages);
}
}
}