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paimon-arrow/src/main/java/org/apache/paimon/arrow/ArrowFieldTypeConversion.java
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| /* | ||
| * 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. | ||
| */ | ||
|
|
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| package org.apache.paimon.arrow; | ||
|
|
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| import org.apache.paimon.types.ArrayType; | ||
| import org.apache.paimon.types.BigIntType; | ||
| import org.apache.paimon.types.BinaryType; | ||
| import org.apache.paimon.types.BooleanType; | ||
| import org.apache.paimon.types.CharType; | ||
| import org.apache.paimon.types.DataType; | ||
| import org.apache.paimon.types.DataTypeVisitor; | ||
| import org.apache.paimon.types.DateType; | ||
| import org.apache.paimon.types.DecimalType; | ||
| import org.apache.paimon.types.DoubleType; | ||
| import org.apache.paimon.types.FloatType; | ||
| import org.apache.paimon.types.IntType; | ||
| import org.apache.paimon.types.LocalZonedTimestampType; | ||
| import org.apache.paimon.types.MapType; | ||
| import org.apache.paimon.types.MultisetType; | ||
| import org.apache.paimon.types.RowType; | ||
| import org.apache.paimon.types.SmallIntType; | ||
| import org.apache.paimon.types.TimeType; | ||
| import org.apache.paimon.types.TimestampType; | ||
| import org.apache.paimon.types.TinyIntType; | ||
| import org.apache.paimon.types.VarBinaryType; | ||
| import org.apache.paimon.types.VarCharType; | ||
|
|
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| import org.apache.arrow.vector.types.TimeUnit; | ||
| import org.apache.arrow.vector.types.Types; | ||
| import org.apache.arrow.vector.types.pojo.ArrowType; | ||
| import org.apache.arrow.vector.types.pojo.FieldType; | ||
|
|
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| import java.util.TimeZone; | ||
|
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| /** Utils for conversion between Paimon {@link DataType} and Arrow {@link FieldType}. */ | ||
| public class ArrowFieldTypeConversion { | ||
|
|
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| public static final ArrowFieldTypeVisitor ARROW_FIELD_TYPE_VISITOR = | ||
| new ArrowFieldTypeVisitor(); | ||
|
|
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| public static class ArrowFieldTypeVisitor implements DataTypeVisitor<FieldType> { | ||
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| @Override | ||
| public FieldType visit(CharType charType) { | ||
| return new FieldType(charType.isNullable(), Types.MinorType.VARCHAR.getType(), null); | ||
| } | ||
|
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| @Override | ||
| public FieldType visit(VarCharType varCharType) { | ||
| return new FieldType(varCharType.isNullable(), Types.MinorType.VARCHAR.getType(), null); | ||
| } | ||
|
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| @Override | ||
| public FieldType visit(BooleanType booleanType) { | ||
| return new FieldType(booleanType.isNullable(), Types.MinorType.BIT.getType(), null); | ||
| } | ||
|
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| @Override | ||
| public FieldType visit(BinaryType binaryType) { | ||
| return new FieldType( | ||
| binaryType.isNullable(), Types.MinorType.VARBINARY.getType(), null); | ||
| } | ||
|
|
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| @Override | ||
| public FieldType visit(VarBinaryType varBinaryType) { | ||
| return new FieldType( | ||
| varBinaryType.isNullable(), Types.MinorType.VARBINARY.getType(), null); | ||
| } | ||
|
|
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| @Override | ||
| public FieldType visit(DecimalType decimalType) { | ||
| return new FieldType( | ||
| decimalType.isNullable(), | ||
| new ArrowType.Decimal(decimalType.getPrecision(), decimalType.getScale(), 128), | ||
| null); | ||
| } | ||
|
|
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| @Override | ||
| public FieldType visit(TinyIntType tinyIntType) { | ||
| return new FieldType(tinyIntType.isNullable(), Types.MinorType.TINYINT.getType(), null); | ||
| } | ||
|
|
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| @Override | ||
| public FieldType visit(SmallIntType smallIntType) { | ||
| return new FieldType( | ||
| smallIntType.isNullable(), Types.MinorType.SMALLINT.getType(), null); | ||
| } | ||
|
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| @Override | ||
| public FieldType visit(IntType intType) { | ||
| return new FieldType(intType.isNullable(), Types.MinorType.INT.getType(), null); | ||
| } | ||
|
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| @Override | ||
| public FieldType visit(BigIntType bigIntType) { | ||
| return new FieldType(bigIntType.isNullable(), Types.MinorType.BIGINT.getType(), null); | ||
| } | ||
|
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| @Override | ||
| public FieldType visit(FloatType floatType) { | ||
| return new FieldType(floatType.isNullable(), Types.MinorType.FLOAT4.getType(), null); | ||
| } | ||
|
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| @Override | ||
| public FieldType visit(DoubleType doubleType) { | ||
| return new FieldType(doubleType.isNullable(), Types.MinorType.FLOAT8.getType(), null); | ||
| } | ||
|
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| @Override | ||
| public FieldType visit(DateType dateType) { | ||
| return new FieldType(dateType.isNullable(), Types.MinorType.DATEDAY.getType(), null); | ||
| } | ||
|
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| @Override | ||
| public FieldType visit(TimeType timeType) { | ||
| return new FieldType(timeType.isNullable(), Types.MinorType.TIMEMILLI.getType(), null); | ||
| } | ||
|
|
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| @Override | ||
| public FieldType visit(TimestampType timestampType) { | ||
| int precision = timestampType.getPrecision(); | ||
| TimeUnit timeUnit = getTimeUnit(precision); | ||
| ArrowType arrowType = new ArrowType.Timestamp(timeUnit, null); | ||
| return new FieldType(timestampType.isNullable(), arrowType, null); | ||
| } | ||
|
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| @Override | ||
| public FieldType visit(LocalZonedTimestampType localZonedTimestampType) { | ||
| int precision = localZonedTimestampType.getPrecision(); | ||
| TimeUnit timeUnit = getTimeUnit(precision); | ||
| ArrowType arrowType = | ||
| new ArrowType.Timestamp(timeUnit, TimeZone.getDefault().toString()); | ||
| return new FieldType(localZonedTimestampType.isNullable(), arrowType, null); | ||
| } | ||
|
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| private TimeUnit getTimeUnit(int precision) { | ||
| if (precision == 0) { | ||
| return TimeUnit.SECOND; | ||
| } else if (precision >= 1 && precision <= 3) { | ||
| return TimeUnit.MILLISECOND; | ||
| } else if (precision >= 4 && precision <= 6) { | ||
| return TimeUnit.MICROSECOND; | ||
| } else { | ||
| return TimeUnit.NANOSECOND; | ||
| } | ||
| } | ||
|
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| @Override | ||
| public FieldType visit(ArrayType arrayType) { | ||
| return new FieldType(arrayType.isNullable(), Types.MinorType.LIST.getType(), null); | ||
| } | ||
|
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| @Override | ||
| public FieldType visit(MultisetType multisetType) { | ||
| throw new UnsupportedOperationException("Doesn't support MultisetType."); | ||
| } | ||
|
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| @Override | ||
| public FieldType visit(MapType mapType) { | ||
| return new FieldType(mapType.isNullable(), new ArrowType.Map(false), null); | ||
| } | ||
|
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| @Override | ||
| public FieldType visit(RowType rowType) { | ||
| return new FieldType(rowType.isNullable(), Types.MinorType.STRUCT.getType(), null); | ||
| } | ||
| } | ||
| } |
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