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Support decoding varbinary in Pinot broker queries
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56 changes: 56 additions & 0 deletions
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plugin/trino-pinot/src/main/java/io/trino/plugin/pinot/decoders/VarbinaryDecoder.java
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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 io.trino.plugin.pinot.decoders; | ||
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import io.airlift.slice.Slice; | ||
import io.airlift.slice.Slices; | ||
import io.trino.spi.TrinoException; | ||
import io.trino.spi.block.BlockBuilder; | ||
import org.apache.commons.codec.DecoderException; | ||
import org.apache.commons.codec.binary.Hex; | ||
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import java.util.function.Supplier; | ||
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import static io.trino.spi.StandardErrorCode.TYPE_MISMATCH; | ||
import static java.lang.String.format; | ||
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public class VarbinaryDecoder | ||
implements Decoder | ||
{ | ||
@Override | ||
public void decode(Supplier<Object> getter, BlockBuilder output) | ||
{ | ||
Object value = getter.get(); | ||
if (value == null) { | ||
output.appendNull(); | ||
} | ||
else if (value instanceof String) { | ||
Slice slice = Slices.wrappedBuffer(toBytes((String) value)); | ||
output.writeBytes(slice, 0, slice.length()).closeEntry(); | ||
} | ||
else { | ||
throw new TrinoException(TYPE_MISMATCH, format("Expected a string value of type VARBINARY: %s [%s]", value, value.getClass().getSimpleName())); | ||
} | ||
} | ||
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public static byte[] toBytes(String stringValue) | ||
{ | ||
try { | ||
return Hex.decodeHex(stringValue.toCharArray()); | ||
} | ||
catch (DecoderException e) { | ||
throw new IllegalArgumentException("Value: " + stringValue + " is not Hex encoded", e); | ||
} | ||
} | ||
} |
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