/**
* (c) Copyright 2013 WibiData, 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 org.kiji.schema.impl;
import java.io.IOException;
import com.google.common.base.Preconditions;
import org.kiji.annotations.ApiAudience;
import org.kiji.schema.DecodedCell;
import org.kiji.schema.KijiCellDecoder;
import org.kiji.schema.avro.SchemaType;
import org.kiji.schema.layout.CellSpec;
import org.kiji.schema.layout.ColumnReaderSpec.Encoding;
/**
* Deserializes an HBase cell as a raw byte array.
*
* @param <T> The type of the decoded cell data. Should be byte[].
*/
@ApiAudience.Private
public final class RawBytesCellDecoder<T> implements KijiCellDecoder<T> {
/**
* Initializes a new RawBytesCellDecoder.
*
* @param cellSpec Specification of the cell encoding.
*/
public RawBytesCellDecoder(CellSpec cellSpec) {
Preconditions.checkNotNull(cellSpec);
Preconditions.checkArgument(
cellSpec.getCellSchema().getType() == SchemaType.RAW_BYTES);
}
/**
* Initializes a new RawBytesCellDecoder.
*
* @param spec Specification of the cell encoding.
*/
public RawBytesCellDecoder(BoundColumnReaderSpec spec) {
Preconditions.checkNotNull(spec);
Preconditions.checkArgument(
spec.getColumnReaderSpec().getEncoding() == Encoding.RAW_BYTES);
}
/** {@inheritDoc} */
@Override
public DecodedCell<T> decodeCell(byte[] encodedBytes) throws IOException {
return new DecodedCell(DecodedCell.NO_SCHEMA, encodedBytes);
}
/** {@inheritDoc} */
@Override
public T decodeValue(byte[] bytes) throws IOException {
return (T) bytes;
}
}