content: /*
   * 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.calcite.avatica;
  
  import org.junit.Test;
  
  import java.sql.Types;
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.Collections;
  import java.util.List;
  
  import static org.apache.calcite.avatica.CursorFactoryDeduceTest.DOUBLE_TYPE;
  import static org.apache.calcite.avatica.CursorFactoryDeduceTest.INT_TYPE;
  import static org.apache.calcite.avatica.CursorFactoryDeduceTest.ROWS;
  import static org.apache.calcite.avatica.CursorFactoryDeduceTest.STRING_TYPE;
  
  import static org.junit.Assert.assertEquals;
  
  /**
   * Tests for {@code MetaImpl} relative to the {@code collect} method.
   */
  public class MetaImplCollectTest {
  
    /**
     * Collecting from records where columns are the fields of a Java object.
     */
    @Test
    public void collectRecord() {
      List<ColumnMetaData> columnsMetaDataList = Arrays.asList(
          MetaImpl.columnMetaData("stringField", 2, STRING_TYPE, true),
          MetaImpl.columnMetaData("doubleField", 3, DOUBLE_TYPE, true),
          MetaImpl.columnMetaData("intField", 1, INT_TYPE, true));
  
      Meta.CursorFactory cursorFactory =
          Meta.CursorFactory.deduce(columnsMetaDataList, CursorFactoryDeduceTest.SimplePOJO.class);
  
      List<List<Object>> rows = new ArrayList<>();
      MetaImpl.collect(cursorFactory, ROWS, rows);
  
      for (int i = 0; i < ROWS.size(); i++) {
        CursorFactoryDeduceTest.SimplePOJO inputRow =
            (CursorFactoryDeduceTest.SimplePOJO) ROWS.get(i);
        List<Object> collectedRow = rows.get(i);
        assertEquals(inputRow.stringField, collectedRow.get(0));
        assertEquals(inputRow.doubleField, collectedRow.get(1));
        assertEquals(inputRow.intField, collectedRow.get(2));
      }
    }
  
    /**
     * Collecting from records where columns are (a subset of) the fields of a Java object.
     */
    @Test public void collectProjectedRecord() {
      List<ColumnMetaData> columnsMetaDataList = Arrays.asList(
          MetaImpl.columnMetaData("stringField", 2, STRING_TYPE, true),
          MetaImpl.columnMetaData("doubleField", 3, DOUBLE_TYPE, true));
  
      Meta.CursorFactory cursorFactory =
          Meta.CursorFactory.deduce(columnsMetaDataList, CursorFactoryDeduceTest.SimplePOJO.class);
  
      List<List<Object>> rows = new ArrayList<>();
      MetaImpl.collect(cursorFactory, ROWS, rows);
  
      for (int i = 0; i < ROWS.size(); i++) {
        CursorFactoryDeduceTest.SimplePOJO inputRow =
            (CursorFactoryDeduceTest.SimplePOJO) ROWS.get(i);
        List<Object> collectedRow = rows.get(i);
        assertEquals(inputRow.stringField, collectedRow.get(0));
        assertEquals(inputRow.doubleField, collectedRow.get(1));
      }
    }
  
    /**
     * Collect from a single column having a Java object as type.
     */
    @Test public void collectObject() {
      ColumnMetaData.Rep rep = ColumnMetaData.Rep.of(CursorFactoryDeduceTest.SimplePOJO.class);
      ColumnMetaData.AvaticaType pojoType =
          ColumnMetaData.scalar(Types.OTHER, "OTHER", rep);
  
      ColumnMetaData pojoMetadata =
          MetaImpl.columnMetaData("POJO", 1, pojoType, true);
  
      List<ColumnMetaData> columnMetaDataList = Collections.singletonList(pojoMetadata);
  
      Meta.CursorFactory cursorFactory =
          Meta.CursorFactory.deduce(columnMetaDataList, CursorFactoryDeduceTest.SimplePOJO.class);
  
      List<List<Object>> rows = new ArrayList<>();
      MetaImpl.collect(cursorFactory, ROWS, rows);
  
      for (int i = 0; i < ROWS.size(); i++) {
        assertEquals(ROWS.get(i), rows.get(i).get(0));
      }
    }
  }
  
  // End MetaImplCollectTest.java
  