org.apache.kylin.metadata.measure.fixedlen.FixedLenMeasureCodec Maven / Gradle / Ivy

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.kylin.metadata.measure.fixedlen;

import org.apache.kylin.measure.hllc.HLLCMeasureType;
import org.apache.kylin.metadata.datatype.DataType;

abstract public class FixedLenMeasureCodec {

    public static FixedLenMeasureCodec get(DataType type) {
        if (HLLCMeasureType.DATATYPE_HLLC.equals(type.getName())) {
            return new FixedHLLCodec(type);
        } else {
            return new FixedPointLongCodec(type);
        }
    }

    abstract public int getLength();

    abstract public DataType getDataType();

    abstract public T valueOf(String value);

    abstract public Object getValue();

    abstract public T read(byte[] buf, int offset);

    abstract public void write(T v, byte[] buf, int offset);

}