| /** |
| * 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.hcatalog.data.schema; |
| |
| import junit.framework.TestCase; |
| import org.apache.hcatalog.common.HCatException; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| public class TestHCatSchema extends TestCase { |
| public void testCannotAddFieldMoreThanOnce() throws HCatException { |
| List<HCatFieldSchema> fieldSchemaList = new ArrayList<HCatFieldSchema>(); |
| fieldSchemaList.add(new HCatFieldSchema("name", HCatFieldSchema.Type.STRING, "What's your handle?")); |
| fieldSchemaList.add(new HCatFieldSchema("age", HCatFieldSchema.Type.INT, "So very old")); |
| |
| HCatSchema schema = new HCatSchema(fieldSchemaList); |
| |
| assertTrue(schema.getFieldNames().contains("age")); |
| assertEquals(2, schema.getFields().size()); |
| |
| try { |
| schema.append(new HCatFieldSchema("age", HCatFieldSchema.Type.INT, "So very old")); |
| fail("Was able to append field schema with same name"); |
| } catch(HCatException he) { |
| assertTrue(he.getMessage().contains("Attempt to append HCatFieldSchema with already existing name: age.")); |
| } |
| |
| assertTrue(schema.getFieldNames().contains("age")); |
| assertEquals(2, schema.getFields().size()); |
| |
| // Should also not be able to add fields of different types with same name |
| try { |
| schema.append(new HCatFieldSchema("age", HCatFieldSchema.Type.STRING, "Maybe spelled out?")); |
| fail("Was able to append field schema with same name"); |
| } catch(HCatException he) { |
| assertTrue(he.getMessage().contains("Attempt to append HCatFieldSchema with already existing name: age.")); |
| } |
| |
| assertTrue(schema.getFieldNames().contains("age")); |
| assertEquals(2, schema.getFields().size()); |
| } |
| |
| public void testCannotInstantiateSchemaWithRepeatedFieldNames() throws HCatException { |
| List<HCatFieldSchema> fieldSchemaList = new ArrayList<HCatFieldSchema>(); |
| |
| fieldSchemaList.add(new HCatFieldSchema("memberID", HCatFieldSchema.Type.INT, "as a number")); |
| fieldSchemaList.add(new HCatFieldSchema("location", HCatFieldSchema.Type.STRING, "there's Waldo")); |
| |
| // No duplicate names. This should be ok |
| HCatSchema schema = new HCatSchema(fieldSchemaList); |
| |
| fieldSchemaList.add(new HCatFieldSchema("memberID", HCatFieldSchema.Type.STRING, "as a String")); |
| |
| // Now a duplicated field name. Should fail |
| try { |
| HCatSchema schema2 = new HCatSchema(fieldSchemaList); |
| fail("Able to add duplicate field name"); |
| } catch (IllegalArgumentException iae) { |
| assertTrue(iae.getMessage().contains("Field named memberID already exists")); |
| } |
| } |
| } |