/*
* 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.qubole.presto.kinesis.decoder.dummy;
import static com.google.common.base.Preconditions.checkNotNull;
import static java.lang.String.format;
import com.qubole.presto.kinesis.decoder.KinesisFieldDecoder;
import io.airlift.slice.Slice;
import java.util.Set;
import com.qubole.presto.kinesis.KinesisColumnHandle;
import com.qubole.presto.kinesis.KinesisFieldValueProvider;
import com.facebook.presto.spi.PrestoException;
import com.google.common.collect.ImmutableSet;
import static com.qubole.presto.kinesis.KinesisErrorCode.KINESIS_CONVERSION_NOT_SUPPORTED;
public class DummyKinesisFieldDecoder
implements KinesisFieldDecoder<Void>
{
@Override
public Set<Class<?>> getJavaTypes()
{
return ImmutableSet.<Class<?>>of(boolean.class, long.class, double.class, Slice.class);
}
@Override
public String getRowDecoderName()
{
return DummyKinesisRowDecoder.NAME;
}
@Override
public String getFieldDecoderName()
{
return KinesisFieldDecoder.DEFAULT_FIELD_DECODER_NAME;
}
@Override
public String toString()
{
return format("FieldDecoder[%s/%s]", getRowDecoderName(), getFieldDecoderName());
}
@Override
public KinesisFieldValueProvider decode(Void value, KinesisColumnHandle columnHandle)
{
checkNotNull(columnHandle, "columnHandle is null");
return new KinesisFieldValueProvider()
{
@Override
public boolean accept(KinesisColumnHandle handle)
{
return false;
}
@Override
public boolean isNull()
{
throw new PrestoException(KINESIS_CONVERSION_NOT_SUPPORTED, "is null check not supported");
}
};
}
}