Package org.apache.metamodel.jdbc

Examples of org.apache.metamodel.jdbc.JdbcDataContext

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    JdbcTestTemplates.meaningOfOneSizeChar(_connection);
  }

  public void testAlternativeConnectionString() throws Exception {
    _connection = DriverManager.getConnection("jdbc:mysql://localhost", USERNAME, PASSWORD);
    DataContext dc = new JdbcDataContext(_connection, TableType.DEFAULT_TABLE_TYPES, "sakila");
    Schema[] schemas = dc.getSchemas();
    assertEquals("[Schema[name=mysql], Schema[name=performance_schema], Schema[name=portal], "
        + "Schema[name=sakila], Schema[name=world]]", Arrays.toString(schemas));

    Table table = dc.getSchemaByName("sakila").getTableByName("film");
    Query q = new Query().from(table).select(table.getColumns());
    DataSet data = dc.executeQuery(q);
    TableModel tableModel = new DataSetTableModel(data);
    assertEquals(13, tableModel.getColumnCount());
    assertEquals(1000, tableModel.getRowCount());
  }
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    super.tearDown();
    _connection.close();
  }

  public void testGetCatalogNames() throws Exception {
    JdbcDataContext strategy = new JdbcDataContext(_connection);
    assertTrue(strategy.getQueryRewriter() instanceof MysqlQueryRewriter);
    String[] catalogNames = strategy.getCatalogNames();
    assertEquals("[information_schema, mysql, performance_schema, portal, sakila, world]",
        Arrays.toString(catalogNames));
  }
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    assertEquals("[information_schema, mysql, performance_schema, portal, sakila, world]",
        Arrays.toString(catalogNames));
  }

  public void testGetDefaultSchema() throws Exception {
    DataContext dc = new JdbcDataContext(_connection);
    Schema schema = dc.getDefaultSchema();
    assertEquals("sakila", schema.getName());
  }
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    Schema schema = dc.getDefaultSchema();
    assertEquals("sakila", schema.getName());
  }

  public void testExecuteQuery() throws Exception {
    DataContext dc = new JdbcDataContext(_connection);
    Schema schema = dc.getDefaultSchema();
    Table actorTable = schema.getTableByName("actor");
    assertEquals(
        "[Column[name=actor_id,columnNumber=0,type=SMALLINT,nullable=false,nativeType=SMALLINT UNSIGNED,columnSize=5], Column[name=first_name,columnNumber=1,type=VARCHAR,nullable=false,nativeType=VARCHAR,columnSize=45], Column[name=last_name,columnNumber=2,type=VARCHAR,nullable=false,nativeType=VARCHAR,columnSize=45], Column[name=last_update,columnNumber=3,type=TIMESTAMP,nullable=false,nativeType=TIMESTAMP,columnSize=19]]",
        Arrays.toString(actorTable.getColumns()));
    Table filmTable = schema.getTableByName("film");
    assertEquals(
        "[Column[name=film_id,columnNumber=0,type=SMALLINT,nullable=false,nativeType=SMALLINT UNSIGNED,columnSize=5], Column[name=title,columnNumber=1,type=VARCHAR,nullable=false,nativeType=VARCHAR,columnSize=255], Column[name=description,columnNumber=2,type=LONGVARCHAR,nullable=true,nativeType=TEXT,columnSize=65535], Column[name=release_year,columnNumber=3,type=DATE,nullable=true,nativeType=YEAR,columnSize=0], Column[name=language_id,columnNumber=4,type=TINYINT,nullable=false,nativeType=TINYINT UNSIGNED,columnSize=3], Column[name=original_language_id,columnNumber=5,type=TINYINT,nullable=true,nativeType=TINYINT UNSIGNED,columnSize=3], Column[name=rental_duration,columnNumber=6,type=TINYINT,nullable=false,nativeType=TINYINT UNSIGNED,columnSize=3], Column[name=rental_rate,columnNumber=7,type=DECIMAL,nullable=false,nativeType=DECIMAL,columnSize=4], Column[name=length,columnNumber=8,type=SMALLINT,nullable=true,nativeType=SMALLINT UNSIGNED,columnSize=5], Column[name=replacement_cost,columnNumber=9,type=DECIMAL,nullable=false,nativeType=DECIMAL,columnSize=5], Column[name=rating,columnNumber=10,type=CHAR,nullable=true,nativeType=ENUM,columnSize=5], Column[name=special_features,columnNumber=11,type=CHAR,nullable=true,nativeType=SET,columnSize=54], Column[name=last_update,columnNumber=12,type=TIMESTAMP,nullable=false,nativeType=TIMESTAMP,columnSize=19]]",
        Arrays.toString(filmTable.getColumns()));
    Table filmActorJoinTable = schema.getTableByName("film_actor");
    assertEquals(
        "[Column[name=actor_id,columnNumber=0,type=SMALLINT,nullable=false,nativeType=SMALLINT UNSIGNED,columnSize=5], "
            + "Column[name=film_id,columnNumber=1,type=SMALLINT,nullable=false,nativeType=SMALLINT UNSIGNED,columnSize=5], "
            + "Column[name=last_update,columnNumber=2,type=TIMESTAMP,nullable=false,nativeType=TIMESTAMP,columnSize=19]]",
        Arrays.toString(filmActorJoinTable.getColumns()));

    Query q = new Query();
    q.from(new FromItem(actorTable).setAlias("a"));
    q.select(actorTable.getColumns());
    q.getSelectClause().getItem(0).setAlias("foo-bar");
    assertEquals(
        "SELECT a.`actor_id` AS foo-bar, a.`first_name`, a.`last_name`, a.`last_update` FROM sakila.`actor` a",
        q.toString());
    FilterItem f1 = new FilterItem(q.getSelectClause().getItem(0), OperatorType.EQUALS_TO, 5);
    FilterItem f2 = new FilterItem(q.getSelectClause().getItem(0), OperatorType.EQUALS_TO, 8);
    q.where(new FilterItem(f1, f2));

    DataSet dataSet = dc.executeQuery(q);
    TableModel tableModel = new DataSetTableModel(dataSet);
    assertEquals(4, tableModel.getColumnCount());
    assertEquals(2, tableModel.getRowCount());
    assertEquals("LOLLOBRIGIDA", tableModel.getValueAt(0, 2));

    q.setMaxRows(1);
    dataSet = dc.executeQuery(q);
    tableModel = new DataSetTableModel(dataSet);
    assertEquals(4, tableModel.getColumnCount());
    assertEquals(1, tableModel.getRowCount());
    assertEquals("LOLLOBRIGIDA", tableModel.getValueAt(0, 2));
   
    q.setMaxRows(1);
    q.setFirstRow(2);
        dataSet = dc.executeQuery(q);
        tableModel = new DataSetTableModel(dataSet);
        assertEquals(4, tableModel.getColumnCount());
        assertEquals(1, tableModel.getRowCount());
        assertEquals("JOHANSSON", tableModel.getValueAt(0, 2));

    q.getWhereClause().removeItems();
    q.setMaxRows(25);
    q.setFirstRow(1);
    dataSet = dc.executeQuery(q);
    tableModel = new DataSetTableModel(dataSet);
    assertEquals(4, tableModel.getColumnCount());
    assertEquals(25, tableModel.getRowCount());
    assertEquals("GUINESS", tableModel.getValueAt(0, 2).toString());
  }
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    assertEquals("GUINESS", tableModel.getValueAt(0, 2).toString());
  }

  // Test to query the film table (caused troubles in DataCleaner)
  public void testFilmQuery() throws Exception {
    DataContext dc = new JdbcDataContext(_connection);
    Table table = dc.getDefaultSchema().getTableByName("film");
    Query q = new Query().select(table.getColumns()).from(table).setMaxRows(400);
    dc.executeQuery(q);
  }
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    Query q = new Query().select(table.getColumns()).from(table).setMaxRows(400);
    dc.executeQuery(q);
  }

  public void testGetSchema() throws Exception {
    DataContext dc = new JdbcDataContext(_connection);
    Schema[] schemas = dc.getSchemas();
    assertEquals(5, schemas.length);
    Schema schema = dc.getDefaultSchema();

    assertEquals("[Table[name=actor,type=TABLE,remarks=], " + "Table[name=address,type=TABLE,remarks=], "
        + "Table[name=category,type=TABLE,remarks=], " + "Table[name=city,type=TABLE,remarks=], "
        + "Table[name=country,type=TABLE,remarks=], " + "Table[name=customer,type=TABLE,remarks=], "
        + "Table[name=film,type=TABLE,remarks=], " + "Table[name=film_actor,type=TABLE,remarks=], "
        + "Table[name=film_category,type=TABLE,remarks=], " + "Table[name=film_text,type=TABLE,remarks=], "
        + "Table[name=inventory,type=TABLE,remarks=], " + "Table[name=language,type=TABLE,remarks=], "
        + "Table[name=payment,type=TABLE,remarks=], " + "Table[name=rental,type=TABLE,remarks=], "
        + "Table[name=staff,type=TABLE,remarks=], " + "Table[name=store,type=TABLE,remarks=], "
        + "Table[name=actor_info,type=VIEW,remarks=], " + "Table[name=customer_list,type=VIEW,remarks=], "
        + "Table[name=film_list,type=VIEW,remarks=], "
        + "Table[name=nicer_but_slower_film_list,type=VIEW,remarks=], "
        + "Table[name=sales_by_film_category,type=VIEW,remarks=], "
        + "Table[name=sales_by_store,type=VIEW,remarks=], " + "Table[name=staff_list,type=VIEW,remarks=]]",
        Arrays.toString(schema.getTables()));

    Table filmTable = schema.getTableByName("film");
    assertEquals(
        "[Column[name=film_id,columnNumber=0,type=SMALLINT,nullable=false,nativeType=SMALLINT UNSIGNED,columnSize=5], "
            + "Column[name=title,columnNumber=1,type=VARCHAR,nullable=false,nativeType=VARCHAR,columnSize=255], "
            + "Column[name=description,columnNumber=2,type=LONGVARCHAR,nullable=true,nativeType=TEXT,columnSize=65535], "
            + "Column[name=release_year,columnNumber=3,type=DATE,nullable=true,nativeType=YEAR,columnSize=0], "
            + "Column[name=language_id,columnNumber=4,type=TINYINT,nullable=false,nativeType=TINYINT UNSIGNED,columnSize=3], "
            + "Column[name=original_language_id,columnNumber=5,type=TINYINT,nullable=true,nativeType=TINYINT UNSIGNED,columnSize=3], "
            + "Column[name=rental_duration,columnNumber=6,type=TINYINT,nullable=false,nativeType=TINYINT UNSIGNED,columnSize=3], "
            + "Column[name=rental_rate,columnNumber=7,type=DECIMAL,nullable=false,nativeType=DECIMAL,columnSize=4], "
            + "Column[name=length,columnNumber=8,type=SMALLINT,nullable=true,nativeType=SMALLINT UNSIGNED,columnSize=5], "
            + "Column[name=replacement_cost,columnNumber=9,type=DECIMAL,nullable=false,nativeType=DECIMAL,columnSize=5], "
            + "Column[name=rating,columnNumber=10,type=CHAR,nullable=true,nativeType=ENUM,columnSize=5], "
            + "Column[name=special_features,columnNumber=11,type=CHAR,nullable=true,nativeType=SET,columnSize=54], "
            + "Column[name=last_update,columnNumber=12,type=TIMESTAMP,nullable=false,nativeType=TIMESTAMP,columnSize=19]]",
        Arrays.toString(filmTable.getColumns()));
    assertEquals(
        "[Relationship[primaryTable=language,primaryColumns=[language_id],foreignTable=film,foreignColumns=[language_id]], Relationship[primaryTable=language,primaryColumns=[language_id],foreignTable=film,foreignColumns=[original_language_id]], Relationship[primaryTable=film,primaryColumns=[film_id],foreignTable=film_actor,foreignColumns=[film_id]], Relationship[primaryTable=film,primaryColumns=[film_id],foreignTable=film_category,foreignColumns=[film_id]], Relationship[primaryTable=film,primaryColumns=[film_id],foreignTable=inventory,foreignColumns=[film_id]]]",
        Arrays.toString(filmTable.getRelationships()));

    dc = new JdbcDataContext(_connection, TableType.DEFAULT_TABLE_TYPES, "sakila");
    schemas = dc.getSchemas();
    assertEquals(6, schemas.length);
    assertEquals("[Table[name=actor,type=TABLE,remarks=], " + "Table[name=address,type=TABLE,remarks=], "
        + "Table[name=category,type=TABLE,remarks=], " + "Table[name=city,type=TABLE,remarks=], "
        + "Table[name=country,type=TABLE,remarks=], " + "Table[name=customer,type=TABLE,remarks=], "
        + "Table[name=film,type=TABLE,remarks=], " + "Table[name=film_actor,type=TABLE,remarks=], "
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            + "Column[name=SID,columnNumber=7,type=TINYINT,nullable=false,nativeType=TINYINT UNSIGNED,columnSize=3]]",
        Arrays.toString(staffView.getColumns()));
  }

  public void testSplitQuery() throws Exception {
    DataContext dc = new JdbcDataContext(_connection, TableType.DEFAULT_TABLE_TYPES, "sakila");
    Schema schema = dc.getSchemaByName("sakila");
    Table staffListTable = schema.getTableByName("staff_list");
    assertNotNull(staffListTable);
    Table paymentTable = schema.getTableByName("payment");
    assertNotNull(paymentTable);
    Column countryColumn = staffListTable.getColumnByName("country");
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    data.close();
    assertEquals(32098, count);
  }

  public void testQueryWithSingleQuote() throws Exception {
    DataContext dc = new JdbcDataContext(_connection, TableType.DEFAULT_TABLE_TYPES, "sakila");
    Query q = dc.query().from("category").selectCount().where("name").eq("kasper's horror movies").toQuery();
    DataSet ds = dc.executeQuery(q);
    assertTrue(ds.next());
    assertEquals(0, ((Number) ds.getRow().getValue(0)).intValue());
    assertFalse(ds.next());
  }
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    public void testInterpretationOfNull() throws Exception {
        JdbcTestTemplates.interpretationOfNulls(_connection);
    }

    public void testDefaultSchema() throws Exception {
        JdbcDataContext dc = new JdbcDataContext(_connection);
        Schema schema = dc.getDefaultSchema();
        assertEquals(USERNAME.toUpperCase(), schema.getName());

        Table countryTable = schema.getTableByName("COUNTRY");
        assertNotNull(countryTable);

        DataSet ds = dc.query().from(countryTable).selectCount().execute();
        assertTrue(ds.next());
        assertEquals("Row[values=[1008]]", ds.getRow().toString());
        assertFalse(ds.next());
        ds.close();
    }
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        assertFalse(ds.next());
        ds.close();
    }

    public void testMaxRowsOnly() throws Exception {
        JdbcDataContext dc = new JdbcDataContext(_connection);
        Schema schema = dc.getDefaultSchema();
        String[] tableNames = schema.getTableNames();
        System.out.println("Tables: " + Arrays.toString(tableNames));

        Table countryTable = schema.getTableByName("COUNTRY");
        assertNotNull(countryTable);

        Query query = dc.query().from(countryTable).select("COUNTRYCODE").limit(200).toQuery();
        assertEquals("SELECT DB2INST1.\"COUNTRY\".\"COUNTRYCODE\" FROM DB2INST1.\"COUNTRY\" "
                + "FETCH FIRST 200 ROWS ONLY", dc.getQueryRewriter().rewriteQuery(query));

        DataSet ds = dc.executeQuery(query);
        for (int i = 0; i < 200; i++) {
            assertTrue(ds.next());
            assertEquals(1, ds.getRow().getValues().length);
        }
        assertFalse(ds.next());
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Related Classes of org.apache.metamodel.jdbc.JdbcDataContext

  • org.apache.metamodel.data.DataSet
  • org.apache.metamodel.data.EmptyDataSet
  • org.apache.metamodel.data.MaxRowsDataSet
  • org.apache.metamodel.DataContextFactory
  • org.apache.metamodel.DB2Test
  • org.apache.metamodel.dbmains.PostgresqlMain
  • org.apache.metamodel.FirebirdTest
  • org.apache.metamodel.jdbc.dialects.DB2QueryRewriter
  • org.apache.metamodel.jdbc.dialects.DefaultQueryRewriter
  • org.apache.metamodel.jdbc.dialects.H2QueryRewriter
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