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Schema Evolution: UpdateSchema api for addition and updates (apache#4)
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core/src/test/java/org/apache/iceberg/TestSchemaUpdates.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.iceberg; | ||
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| import org.apache.iceberg.types.Types; | ||
| import org.apache.iceberg.types.Types.NestedField; | ||
| import org.apache.iceberg.types.Types.StructType; | ||
| import org.junit.Assert; | ||
| import org.junit.Test; | ||
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| public class TestSchemaUpdates { | ||
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| @Test | ||
| public void testUpdates() { | ||
| Schema schema = new Schema( | ||
| NestedField.required(1, "id", Types.IntegerType.get()), | ||
| NestedField.optional(2, "partition", Types.DoubleType.get())); | ||
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| Schema newSchema = new Schema( | ||
| // type promotion with documentation | ||
| NestedField.required(1, "id", Types.LongType.get(), "type promoted"), | ||
| NestedField.optional(2, "partition", Types.DoubleType.get()), | ||
| // struct is added, as an optional field | ||
| NestedField.optional(3, "location", StructType.of( | ||
| NestedField.required(4, "lat", Types.FloatType.get()))), | ||
| // top level field added as optional | ||
| NestedField.optional(5, "tz", Types.TimestampType.withoutZone())); | ||
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| Schema applied = new SchemaUpdate(schema, 2).updateSchema(newSchema).apply(); | ||
| Assert.assertEquals(newSchema.asStruct(), applied.asStruct()); | ||
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| // nested adds | ||
| newSchema = new Schema( | ||
| NestedField.required(1, "id", Types.IntegerType.get()), | ||
| NestedField.optional(2, "partition", Types.DoubleType.get()), | ||
| // struct is added, as an optional field | ||
| NestedField.optional(3, "a", StructType.of( | ||
| NestedField.required(4, "a_b", StructType.of( | ||
| NestedField.required(5, "a_b_c", StructType.of( | ||
| NestedField.required(6, "a_b_c_d", Types.IntegerType.get())))))))); | ||
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| applied = new SchemaUpdate(schema, 2).updateSchema(newSchema).apply(); | ||
| Assert.assertEquals(newSchema.asStruct(), applied.asStruct()); | ||
| } | ||
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| @Test | ||
| public void testMapUpdates() { | ||
| Schema schema = new Schema( | ||
| NestedField.required(1, "id", Types.LongType.get())); | ||
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| Schema newSchema = new Schema( | ||
| // map addition | ||
| NestedField.required(1, "id", Types.LongType.get()), | ||
| NestedField.optional(2, "location", Types.MapType.ofRequired( | ||
| 3, 4, Types.LongType.get(), StructType.of( | ||
| NestedField.required(5, "lat", Types.FloatType.get()))))); | ||
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| Schema applied = new SchemaUpdate(schema, 1).updateSchema(newSchema).apply(); | ||
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| Assert.assertEquals(newSchema.asStruct(), applied.asStruct()); | ||
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| // complex maps | ||
| schema = new Schema( | ||
| NestedField.required(1, "locations", Types.MapType.ofOptional(2, 3, | ||
| StructType.of( | ||
| NestedField.required(4, "k1", Types.IntegerType.get()) | ||
| ), | ||
| StructType.of( | ||
| NestedField.required(5, "lat", Types.FloatType.get()), | ||
| NestedField.required(6, "long", Types.FloatType.get()) | ||
| ) | ||
| ))); | ||
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| newSchema = new Schema( | ||
| NestedField.required(1, "locations", Types.MapType.ofOptional(2, 3, | ||
| StructType.of( | ||
| NestedField.required(4, "k1", Types.IntegerType.get()) | ||
| ), | ||
| StructType.of( | ||
| NestedField.required(5, "lat", Types.FloatType.get()), | ||
| NestedField.required(6, "long", Types.DoubleType.get()) | ||
| ) | ||
| ))); | ||
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| applied = new SchemaUpdate(schema, 6).updateSchema(newSchema).apply(); | ||
| Assert.assertEquals(newSchema.asStruct(), applied.asStruct()); | ||
| } | ||
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| @Test | ||
| public void testListUpdates() { | ||
| Schema schema = new Schema( | ||
| NestedField.required(1, "id", Types.LongType.get())); | ||
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| Schema newSchema = new Schema( | ||
| // optional list field added | ||
| NestedField.required(1, "id", Types.LongType.get()), | ||
| NestedField.optional(2, "list", Types.ListType.ofRequired( | ||
| 3, | ||
| StructType.of( | ||
| NestedField.required(4, "lat", Types.FloatType.get()), | ||
| NestedField.required(5, "long", Types.FloatType.get()))))); | ||
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| Schema applied = new SchemaUpdate(schema, 1).updateSchema(newSchema).apply(); | ||
| Assert.assertEquals(newSchema.asStruct(), applied.asStruct()); | ||
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| schema = new Schema( | ||
| NestedField.required(1, "id", Types.LongType.get()), | ||
| NestedField.optional(2, "list", Types.ListType.ofRequired( | ||
| 3, | ||
| StructType.of( | ||
| NestedField.required(4, "lat", Types.FloatType.get()), | ||
| NestedField.required(5, "long", Types.FloatType.get()))))); | ||
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| newSchema = new Schema( | ||
| NestedField.required(1, "id", Types.LongType.get()), | ||
| NestedField.optional(2, "list", Types.ListType.ofRequired( | ||
| 3, | ||
| StructType.of( | ||
| NestedField.required(4, "lat", Types.DoubleType.get()), | ||
| NestedField.required(5, "long", Types.DoubleType.get()))))); | ||
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| applied = new SchemaUpdate(schema, 5).updateSchema(newSchema).apply(); | ||
| Assert.assertEquals(newSchema.asStruct(), applied.asStruct()); | ||
| } | ||
| } | ||
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