com.epam.deltix.qsrv.hf.tickdb.impl.SimpleMessageDecoder Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of timebase-api Show documentation

Timebase API Library

There is a newer version: 6.2.9

/*
 * Copyright 2024 EPAM Systems, Inc
 *
 * See the NOTICE file distributed with this work for additional information
 * regarding copyright ownership. 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.epam.deltix.qsrv.hf.tickdb.impl;

import com.epam.deltix.timebase.messages.InstrumentMessage;
import com.epam.deltix.qsrv.hf.pub.TypeLoader;
import com.epam.deltix.qsrv.hf.pub.codec.BoundExternalDecoder;
import com.epam.deltix.qsrv.hf.pub.codec.CodecFactory;
import com.epam.deltix.qsrv.hf.pub.md.RecordClassDescriptor;
import com.epam.deltix.util.memory.MemoryDataInput;

public class SimpleMessageDecoder {

    private final BoundExternalDecoder      decoder;
    private final InstrumentMessage         message;
    private final RecordClassDescriptor     type;
    private final MemoryDataInput           input;

    public SimpleMessageDecoder (
            TypeLoader                  loader,
            CodecFactory                factory,
            RecordClassDescriptor       fixedType
    )
    {
        type = fixedType;
        message = (InstrumentMessage) fixedType.newInstanceNoX(loader);

        decoder = factory.createFixedExternalDecoder(loader, fixedType);
        decoder.setStaticFields (message);
        input = new MemoryDataInput();
    }

    public InstrumentMessage decode(MemoryDataInput in, int length) {

        input.setBytes(in.getBytes(), in.getCurrentOffset(), length);
        decoder.decode(input, message);
        return message;
    }

    public InstrumentMessage getMessage() {
        return message;
    }

    public RecordClassDescriptor getType() {
        return type;
    }
}