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/**
* Licensed to the Apache Software Foundation (ASF) under one
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* 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"));
}
}
}