rdblue commented on a change in pull request #1182: URL: https://github.com/apache/iceberg/pull/1182#discussion_r453793940
########## File path: flink/src/main/java/org/apache/iceberg/flink/TypeToFlinkType.java ########## @@ -0,0 +1,133 @@ +/* + * 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.iceberg.flink; + +import java.util.List; +import org.apache.flink.table.types.logical.ArrayType; +import org.apache.flink.table.types.logical.BigIntType; +import org.apache.flink.table.types.logical.BinaryType; +import org.apache.flink.table.types.logical.BooleanType; +import org.apache.flink.table.types.logical.CharType; +import org.apache.flink.table.types.logical.DateType; +import org.apache.flink.table.types.logical.DecimalType; +import org.apache.flink.table.types.logical.DoubleType; +import org.apache.flink.table.types.logical.FloatType; +import org.apache.flink.table.types.logical.IntType; +import org.apache.flink.table.types.logical.LocalZonedTimestampType; +import org.apache.flink.table.types.logical.LogicalType; +import org.apache.flink.table.types.logical.MapType; +import org.apache.flink.table.types.logical.RowType; +import org.apache.flink.table.types.logical.TimeType; +import org.apache.flink.table.types.logical.TimestampType; +import org.apache.flink.table.types.logical.VarBinaryType; +import org.apache.flink.table.types.logical.VarCharType; +import org.apache.iceberg.Schema; +import org.apache.iceberg.relocated.com.google.common.collect.Lists; +import org.apache.iceberg.types.Type; +import org.apache.iceberg.types.TypeUtil; +import org.apache.iceberg.types.Types; + +class TypeToFlinkType extends TypeUtil.SchemaVisitor<LogicalType> { + TypeToFlinkType() { + } + + @Override + public LogicalType schema(Schema schema, LogicalType structType) { + return structType; + } + + @Override + public LogicalType struct(Types.StructType struct, List<LogicalType> fieldResults) { + List<Types.NestedField> fields = struct.fields(); + + List<RowType.RowField> flinkFields = Lists.newArrayListWithExpectedSize(fieldResults.size()); + for (int i = 0; i < fields.size(); i += 1) { + Types.NestedField field = fields.get(i); + LogicalType type = fieldResults.get(i); + RowType.RowField flinkField = new RowType.RowField( + field.name(), type.copy(field.isOptional()), field.doc()); + flinkFields.add(flinkField); + } + + return new RowType(flinkFields); + } + + @Override + public LogicalType field(Types.NestedField field, LogicalType fieldResult) { + return fieldResult; + } + + @Override + public LogicalType list(Types.ListType list, LogicalType elementResult) { + return new ArrayType(elementResult.copy(list.isElementOptional())); + } + + @Override + public LogicalType map(Types.MapType map, LogicalType keyResult, LogicalType valueResult) { + // keys in map are not allowed to be null. + return new MapType(keyResult.copy(false), valueResult.copy(map.isValueOptional())); + } + + @Override + public LogicalType primitive(Type.PrimitiveType primitive) { + switch (primitive.typeId()) { + case BOOLEAN: + return new BooleanType(); + case INTEGER: + return new IntType(); + case LONG: + return new BigIntType(); + case FLOAT: + return new FloatType(); + case DOUBLE: + return new DoubleType(); + case DATE: + return new DateType(); + case TIME: + // MICROS + return new TimeType(6); + case TIMESTAMP: + Types.TimestampType timestamp = (Types.TimestampType) primitive; + if (timestamp.shouldAdjustToUTC()) { + // MICROS + return new LocalZonedTimestampType(6); + } else { + // MICROS + return new TimestampType(6); + } + case STRING: + return new VarCharType(VarCharType.MAX_LENGTH); + case UUID: + // UUID length is 16 + return new CharType(16); Review comment: I think either `CHAR(36)` or `VARBINARY(16)` would work, but not `CHAR(16)`. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
