com.facebook.presto.jdbc.internal.common.block.BlockSerdeUtil Maven / Gradle / Ivy

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/*
 * 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.facebook.presto.jdbc.internal.common.block;

import com.facebook.presto.jdbc.internal.common.GenericInternalException;
import com.facebook.presto.jdbc.internal.io.airlift.slice.Slice;
import com.facebook.presto.jdbc.internal.io.airlift.slice.SliceInput;
import com.facebook.presto.jdbc.internal.io.airlift.slice.SliceOutput;

import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;

public final class BlockSerdeUtil
{
    public static final MethodHandle READ_BLOCK;

    static {
        try {
            READ_BLOCK = MethodHandles.lookup().unreflect(BlockSerdeUtil.class.getMethod("readBlock", BlockEncodingSerde.class, Slice.class));
        }
        catch (IllegalAccessException | NoSuchMethodException e) {
            throw new GenericInternalException(e);
        }
    }

    private BlockSerdeUtil()
    {
    }

    public static Block readBlock(BlockEncodingSerde blockEncodingSerde, Slice slice)
    {
        return readBlock(blockEncodingSerde, slice.getInput());
    }

    public static Block readBlock(BlockEncodingSerde blockEncodingSerde, SliceInput input)
    {
        return blockEncodingSerde.readBlock(input);
    }

    public static void writeBlock(BlockEncodingSerde blockEncodingSerde, SliceOutput output, Block block)
    {
        blockEncodingSerde.writeBlock(output, block);
    }
}