| /** |
| * 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.metamodel.intercept; |
| |
| import java.io.File; |
| import java.util.Arrays; |
| |
| import junit.framework.TestCase; |
| |
| import org.apache.metamodel.UpdateCallback; |
| import org.apache.metamodel.UpdateScript; |
| import org.apache.metamodel.UpdateableDataContext; |
| import org.apache.metamodel.create.TableCreationBuilder; |
| import org.apache.metamodel.csv.CsvDataContext; |
| import org.apache.metamodel.data.DataSet; |
| import org.apache.metamodel.insert.RowInsertionBuilder; |
| import org.apache.metamodel.schema.Table; |
| |
| public class InterceptionCsvIntegrationTest extends TestCase { |
| |
| public void testScenario() throws Exception { |
| final UpdateableDataContext source = new CsvDataContext(new File( |
| "target/test_interception_scenario.txt")); |
| final InterceptableDataContext dc = Interceptors.intercept(source); |
| |
| dc.addTableCreationInterceptor(new TableCreationInterceptor() { |
| @Override |
| public TableCreationBuilder intercept(TableCreationBuilder input) { |
| return input.withColumn("foobar"); |
| } |
| }); |
| |
| dc.addRowInsertionInterceptor(new RowInsertionInterceptor() { |
| @Override |
| public RowInsertionBuilder intercept(RowInsertionBuilder input) { |
| return input.value("foobar", "elite!"); |
| } |
| }); |
| |
| dc.executeUpdate(new UpdateScript() { |
| @Override |
| public void run(UpdateCallback callback) { |
| Table table = callback |
| .createTable(dc.getDefaultSchema(), "table") |
| .withColumn("col1").withColumn("col2").execute(); |
| |
| callback.insertInto(table).value("col1", "hello") |
| .value("col2", "world").execute(); |
| callback.insertInto(table).value("col1", "123") |
| .value("col2", "567").execute(); |
| } |
| }); |
| |
| assertEquals("[table, default_table]", |
| Arrays.toString(dc.getDefaultSchema().getTableNames().toArray())); |
| Table table = dc.getDefaultSchema().getTables().get(0); |
| assertEquals("[col1, col2, foobar]", |
| Arrays.toString(table.getColumnNames().toArray())); |
| |
| DataSet ds = dc.query().from(table).select(table.getColumns()) |
| .execute(); |
| assertTrue(ds.next()); |
| assertEquals("Row[values=[hello, world, elite!]]", ds.getRow() |
| .toString()); |
| assertTrue(ds.next()); |
| assertEquals("Row[values=[123, 567, elite!]]", ds.getRow().toString()); |
| assertFalse(ds.next()); |
| } |
| } |