/**
* 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.hadoop.zebra.types;
import java.io.StringReader;
import junit.framework.Assert;
import org.apache.hadoop.zebra.schema.ColumnType;
import org.apache.hadoop.zebra.parser.ParseException;
import org.apache.hadoop.zebra.schema.Schema;
import org.apache.hadoop.zebra.parser.TableSchemaParser;
import org.apache.hadoop.zebra.schema.Schema.ColumnSchema;
import org.junit.Test;
public class TestSchemaCollection {
@Test
public void testSchemaValid1() throws ParseException {
String strSch = "c1:collection(record(f1:int, f2:int)), c2:collection(record(c3:collection(record(f3:float, f4))))";
TableSchemaParser parser;
Schema schema;
parser = new TableSchemaParser(new StringReader(strSch));
schema = parser.RecordSchema(null);
System.out.println(schema);
// test 1st level schema;
ColumnSchema f1 = schema.getColumn(0);
Assert.assertEquals("c1", f1.getName());
Assert.assertEquals(ColumnType.COLLECTION, f1.getType());
ColumnSchema f2 = schema.getColumn(1);
Assert.assertEquals("c2", f2.getName());
Assert.assertEquals(ColumnType.COLLECTION, f2.getType());
// test 2nd level schema;
Schema f1Schema = f1.getSchema();
ColumnSchema f11 = f1Schema.getColumn(0).getSchema().getColumn(0);
Assert.assertEquals("f1", f11.getName());
Assert.assertEquals(ColumnType.INT, f11.getType());
ColumnSchema f12 = f1Schema.getColumn(0).getSchema().getColumn(1);
Assert.assertEquals("f2", f12.getName());
Assert.assertEquals(ColumnType.INT, f12.getType());
Schema f2Schema = f2.getSchema();
ColumnSchema f21 = f2Schema.getColumn(0).getSchema().getColumn(0);
Assert.assertEquals("c3", f21.getName());
Assert.assertEquals(ColumnType.COLLECTION, f21.getType());
// test 3rd level schema;
Schema f21Schema = f21.getSchema();
ColumnSchema f211 = f21Schema.getColumn(0).getSchema().getColumn(0);
Assert.assertEquals("f3", f211.getName());
Assert.assertEquals(ColumnType.FLOAT, f211.getType());
ColumnSchema f212 = f21Schema.getColumn(0).getSchema().getColumn(1);
Assert.assertEquals("f4", f212.getName());
Assert.assertEquals(ColumnType.BYTES, f212.getType());
}
@Test
public void testSchemaInvalid1() throws ParseException, Exception {
try {
String strSch = "c1:collection(record(f1:int, f2:int)), c2:collection(record(c3:collection(record(f3:float, f4)))))";
TableSchemaParser parser;
Schema schema;
parser = new TableSchemaParser(new StringReader(strSch));
schema = parser.RecordSchema(null);
System.out.println(schema);
} catch (Exception e) {
String errMsg = e.getMessage();
String str = "Encountered \" \")\" \") \"\" at line 1, column 98.";
System.out.println(errMsg);
System.out.println(str);
Assert.assertEquals(errMsg.startsWith(str), true);
}
}
@Test
public void testInvalidCollectionSchema() throws ParseException {
String[] strSchs = { "c0:int, c1:collection(f1:int, f2:string)",
"c0:int, c1:collection(f1:int)",
"c0:int, c1:collection(int)" };
for( String strSch : strSchs ) {
TableSchemaParser parser = new TableSchemaParser( new StringReader( strSch ) );
try {
parser.RecordSchema(null);
} catch(ParseException ex) {
System.out.println( "Catch expected exception for schema: " + strSch );
continue;
}
Assert.fail( "Exception expected for invalid schemes: "+ strSch );
}
}
// private void printSchema(Schema schema, int indent) {
// for( int i = 0; i < schema.getNumColumns(); i++ ) {
// ColumnSchema cs = schema.getColumn( i );
// for( int j = 0; j < indent; j++ )
// System.out.print( "\t" );
// System.out.println( cs.getName() + ": " + cs.getType().toString() );
// if( cs.getSchema() != null )
// printSchema( cs.getSchema(), indent + 1 );
// }
//
// }
}