| /* |
| * 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.drill.exec.store.cassandra; |
| |
| import com.datastax.oss.driver.api.core.data.CqlDuration; |
| import org.apache.drill.common.types.TypeProtos; |
| import org.apache.drill.exec.record.ColumnConverter; |
| import org.apache.drill.exec.record.ColumnConverterFactory; |
| import org.apache.drill.exec.record.metadata.ColumnMetadata; |
| import org.apache.drill.exec.record.metadata.TupleMetadata; |
| import org.apache.drill.exec.vector.accessor.TupleWriter; |
| import org.apache.drill.exec.vector.accessor.ValueWriter; |
| import org.joda.time.Period; |
| import org.joda.time.format.PeriodFormatter; |
| import org.joda.time.format.PeriodFormatterBuilder; |
| |
| import java.math.BigDecimal; |
| import java.math.BigInteger; |
| import java.net.Inet4Address; |
| import java.nio.ByteBuffer; |
| import java.nio.ByteOrder; |
| import java.util.Map; |
| import java.util.UUID; |
| import java.util.stream.Collectors; |
| import java.util.stream.StreamSupport; |
| |
| public class CassandraColumnConverterFactory extends ColumnConverterFactory { |
| |
| private static final PeriodFormatter FORMATTER = new PeriodFormatterBuilder() |
| .appendYears() |
| .appendSuffix("Y") |
| .appendMonths() |
| .appendSuffix("M") |
| .appendWeeks() |
| .appendSuffix("W") |
| .appendDays() |
| .appendSuffix("D") |
| .appendHours() |
| .appendSuffix("H") |
| .appendMinutes() |
| .appendSuffix("M") |
| .appendSecondsWithOptionalMillis() |
| .appendSuffix("S") |
| .toFormatter(); |
| |
| public CassandraColumnConverterFactory(TupleMetadata providedSchema) { |
| super(providedSchema); |
| } |
| |
| @Override |
| public ColumnConverter.ScalarColumnConverter buildScalar(ColumnMetadata readerSchema, ValueWriter writer) { |
| switch (readerSchema.type()) { |
| case INTERVAL: |
| return new ColumnConverter.ScalarColumnConverter(value -> { |
| CqlDuration duration = (CqlDuration) value; |
| writer.setPeriod(Period.parse(duration.toString(), FORMATTER)); |
| }); |
| case BIGINT: |
| return new ColumnConverter.ScalarColumnConverter(value -> { |
| long longValue; |
| if (value instanceof BigInteger) { |
| longValue = ((BigInteger) value).longValue(); |
| } else { |
| longValue = (Long) value; |
| } |
| writer.setLong(longValue); |
| }); |
| case VARCHAR: |
| return new ColumnConverter.ScalarColumnConverter(value -> writer.setString(value.toString())); |
| case VARDECIMAL: |
| return new ColumnConverter.ScalarColumnConverter(value -> writer.setDecimal((BigDecimal) value)); |
| case VARBINARY: |
| return new ColumnConverter.ScalarColumnConverter(value -> { |
| byte[] bytes; |
| if (value instanceof Inet4Address) { |
| bytes = ((Inet4Address) value).getAddress(); |
| } else if (value instanceof UUID) { |
| UUID uuid = (UUID) value; |
| bytes = ByteBuffer.wrap(new byte[16]) |
| .order(ByteOrder.BIG_ENDIAN) |
| .putLong(uuid.getMostSignificantBits()) |
| .putLong(uuid.getLeastSignificantBits()) |
| .array(); |
| } else { |
| bytes = (byte[]) value; |
| } |
| writer.setBytes(bytes, bytes.length); |
| }); |
| case BIT: |
| return new ColumnConverter.ScalarColumnConverter(value -> writer.setBoolean((Boolean) value)); |
| default: |
| return super.buildScalar(readerSchema, writer); |
| } |
| } |
| |
| @Override |
| protected ColumnConverter getMapConverter(TupleMetadata providedSchema, |
| TupleMetadata readerSchema, TupleWriter tupleWriter) { |
| Map<String, ColumnConverter> converters = StreamSupport.stream(readerSchema.spliterator(), false) |
| .collect(Collectors.toMap( |
| ColumnMetadata::name, |
| columnMetadata -> |
| getConverter(providedSchema, columnMetadata, tupleWriter.column(columnMetadata.name())))); |
| |
| return new CassandraMapColumnConverter(this, providedSchema, tupleWriter, converters); |
| } |
| |
| private static class CassandraMapColumnConverter extends ColumnConverter.MapColumnConverter { |
| |
| public CassandraMapColumnConverter(ColumnConverterFactory factory, TupleMetadata providedSchema, TupleWriter tupleWriter, Map<String, ColumnConverter> converters) { |
| super(factory, providedSchema, tupleWriter, converters); |
| } |
| |
| @Override |
| protected TypeProtos.MinorType getScalarMinorType(Class<?> clazz) { |
| if (clazz == CqlDuration.class) { |
| return TypeProtos.MinorType.INTERVAL; |
| } else if (clazz == Inet4Address.class |
| || clazz == UUID.class) { |
| return TypeProtos.MinorType.VARBINARY; |
| } else if (clazz == java.math.BigInteger.class) { |
| return TypeProtos.MinorType.BIGINT; |
| } else if (clazz == org.apache.calcite.avatica.util.ByteString.class) { |
| return TypeProtos.MinorType.VARCHAR; |
| } |
| return super.getScalarMinorType(clazz); |
| } |
| } |
| } |