Package java.sql

Examples of java.sql.ResultSetMetaData

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    }

    private void testColumnLength() throws SQLException {
        trace("testColumnDisplayLength");
        ResultSet rs;
        ResultSetMetaData meta;

        stat.execute("CREATE TABLE one (ID INT, NAME VARCHAR(255))");
        rs = stat.executeQuery("select * from one");
        meta = rs.getMetaData();
        assertEquals("ID", meta.getColumnLabel(1));
        assertEquals(11, meta.getColumnDisplaySize(1));
        assertEquals("NAME", meta.getColumnLabel(2));
        assertEquals(255, meta.getColumnDisplaySize(2));
        stat.execute("DROP TABLE one");

        rs = stat.executeQuery("select 1, 'Hello' union select 2, 'Hello World!'");
        meta = rs.getMetaData();
        assertEquals(11, meta.getColumnDisplaySize(1));
        assertEquals(12, meta.getColumnDisplaySize(2));

        rs = stat.executeQuery("explain select * from dual");
        meta = rs.getMetaData();
        assertEquals(Integer.MAX_VALUE, meta.getColumnDisplaySize(1));
        assertEquals(Integer.MAX_VALUE, meta.getPrecision(1));

        rs = stat.executeQuery("script");
        meta = rs.getMetaData();
        assertEquals(Integer.MAX_VALUE, meta.getColumnDisplaySize(1));
        assertEquals(Integer.MAX_VALUE, meta.getPrecision(1));

        rs = stat.executeQuery("select group_concat(table_name) from information_schema.tables");
        rs.next();
        meta = rs.getMetaData();
        assertEquals(Integer.MAX_VALUE, meta.getColumnDisplaySize(1));
        assertEquals(Integer.MAX_VALUE, meta.getPrecision(1));

    }
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    private void testLimitMaxRows() throws SQLException {
        trace("Test LimitMaxRows");
        ResultSet rs;
        stat.execute("CREATE TABLE one (C CHARACTER(10))");
        rs = stat.executeQuery("SELECT C || C FROM one;");
        ResultSetMetaData md = rs.getMetaData();
        assertEquals(20, md.getPrecision(1));
        ResultSet rs2 = stat.executeQuery("SELECT UPPER (C)  FROM one;");
        ResultSetMetaData md2 = rs2.getMetaData();
        assertEquals(10, md2.getPrecision(1));
        rs = stat.executeQuery("SELECT UPPER (C), CHAR(10), CONCAT(C,C,C), HEXTORAW(C), RAWTOHEX(C) FROM one");
        ResultSetMetaData meta = rs.getMetaData();
        assertEquals(10, meta.getPrecision(1));
        assertEquals(1, meta.getPrecision(2));
        assertEquals(30, meta.getPrecision(3));
        assertEquals(3, meta.getPrecision(4));
        assertEquals(40, meta.getPrecision(5));
        stat.execute("DROP TABLE one");
    }
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        rs = stat.getGeneratedKeys();
        assertTrue(rs.next());
        assertEquals(2, rs.getInt(1));

        rs = stat.executeQuery("SELECT ID AS I, NAME AS N, ID+1 AS IP1 FROM TEST");
        ResultSetMetaData meta = rs.getMetaData();
        assertTrue(meta.isAutoIncrement(1));
        assertFalse(meta.isAutoIncrement(2));
        assertFalse(meta.isAutoIncrement(3));
        assertEquals(ResultSetMetaData.columnNoNulls, meta.isNullable(1));
        assertEquals(ResultSetMetaData.columnNullable, meta.isNullable(2));
        assertEquals(ResultSetMetaData.columnNullableUnknown, meta.isNullable(3));
        assertTrue(rs.next());
        assertTrue(rs.next());
        assertFalse(rs.next());

    }
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        // MySQL compatibility
        assertEquals(1, rs.findColumn("TEST.ID"));
        assertEquals(2, rs.findColumn("TEST.VALUE"));

        ResultSetMetaData meta = rs.getMetaData();
        assertEquals(3, meta.getColumnCount());
        assertEquals("resultSet".toUpperCase(), meta.getCatalogName(1));
        assertTrue("PUBLIC".equals(meta.getSchemaName(2)));
        assertTrue("TEST".equals(meta.getTableName(1)));
        assertTrue("ID".equals(meta.getColumnName(1)));
        assertTrue("VALUE".equals(meta.getColumnName(2)));
        assertTrue(!meta.isAutoIncrement(1));
        assertTrue(meta.isCaseSensitive(1));
        assertTrue(meta.isSearchable(1));
        assertFalse(meta.isCurrency(1));
        assertTrue(meta.getColumnDisplaySize(1) > 0);
        assertTrue(meta.isSigned(1));
        assertTrue(meta.isSearchable(2));
        assertEquals(ResultSetMetaData.columnNoNulls, meta.isNullable(1));
        assertFalse(meta.isReadOnly(1));
        assertTrue(meta.isWritable(1));
        assertFalse(meta.isDefinitelyWritable(1));
        assertTrue(meta.getColumnDisplaySize(1) > 0);
        assertTrue(meta.getColumnDisplaySize(2) > 0);
        assertEquals(null, meta.getColumnClassName(3));

        assertTrue(rs.getRow() == 0);
        assertResultSetMeta(rs, 3, new String[] { "ID", "VALUE", "N" }, new int[] { Types.INTEGER, Types.INTEGER,
                Types.NULL }, new int[] { 10, 10, 1 }, new int[] { 0, 0, 0 });
        rs.next();
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        stat.execute("create alias x as 'ResultSet x(Connection conn, String sql) " +
                "throws SQLException { return conn.createStatement(" +
                "ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY).executeQuery(sql); }'");
        stat.execute("insert into test values(select x('select x from system_range(1, 2)'))");
        ResultSet rs = stat.executeQuery("select * from test");
        ResultSetMetaData rsMeta = rs.getMetaData();
        assertEquals("java.sql.ResultSet", rsMeta.getColumnClassName(1));
        assertEquals(DataType.TYPE_RESULT_SET, rsMeta.getColumnType(1));
        rs.next();
        assertTrue(rs.getObject(1) instanceof java.sql.ResultSet);
        assertEquals("org.h2.tools.SimpleResultSet", rs.getObject(1).getClass().getName());
        stat.executeUpdate("drop alias x");
        stat.executeUpdate("drop table test");
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    private void testColumnLobMeta() throws SQLException {
        stat = conn.createStatement();
        stat.executeUpdate("CREATE TABLE t (blob BLOB, clob CLOB)");
        stat.execute("INSERT INTO t VALUES('', '')");
        ResultSet rs = stat.executeQuery("SELECT blob,clob FROM t");
        ResultSetMetaData rsMeta = rs.getMetaData();
        if (SysProperties.RETURN_LOB_OBJECTS) {
            assertEquals("java.sql.Blob", rsMeta.getColumnClassName(1));
            assertEquals("java.sql.Clob", rsMeta.getColumnClassName(2));
        } else {
            assertEquals("java.io.InputStream", rsMeta.getColumnClassName(1));
            assertEquals("java.io.Reader", rsMeta.getColumnClassName(2));
        }
        rs.next();
        if (SysProperties.RETURN_LOB_OBJECTS) {
            assertTrue(rs.getObject(1) instanceof java.sql.Blob);
            assertTrue(rs.getObject(2) instanceof java.sql.Clob);
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        stat = conn.createStatement();
        stat.execute("create table a(x array)");
        stat.execute("insert into a values((1, 2))");
        rs = stat.executeQuery("SELECT x[1] FROM a");
        ResultSetMetaData rsMeta = rs.getMetaData();
        assertEquals(Types.VARCHAR, rsMeta.getColumnType(1));
        rs.next();
        // assertEquals(String.class.getName(), rs.getObject(1).getClass().getName());
        stat.execute("drop table a");
    }
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    private void testColumnPrecision() throws SQLException {
        stat = conn.createStatement();
        stat.execute("CREATE TABLE ONE(X NUMBER(12,2), Y FLOAT)");
        stat.execute("CREATE TABLE TWO AS SELECT * FROM ONE");
        ResultSet rs;
        ResultSetMetaData rsMeta;
        rs = stat.executeQuery("SELECT * FROM ONE");
        rsMeta = rs.getMetaData();
        assertEquals(12, rsMeta.getPrecision(1));
        assertEquals(17, rsMeta.getPrecision(2));
        assertEquals(Types.DECIMAL, rsMeta.getColumnType(1));
        assertEquals(Types.DOUBLE, rsMeta.getColumnType(2));
        rs = stat.executeQuery("SELECT * FROM TWO");
        rsMeta = rs.getMetaData();
        assertEquals(12, rsMeta.getPrecision(1));
        assertEquals(17, rsMeta.getPrecision(2));
        assertEquals(Types.DECIMAL, rsMeta.getColumnType(1));
        assertEquals(Types.DOUBLE, rsMeta.getColumnType(2));
        stat.execute("DROP TABLE ONE, TWO");
    }
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     * @param rs the result set
     * @param index the column index
     * @return the value
     */
    static Value read(TestSynth config, ResultSet rs, int index) throws SQLException {
        ResultSetMetaData meta = rs.getMetaData();
        Object data;
        int type = meta.getColumnType(index);
        switch (type) {
        case Types.REAL:
        case Types.DOUBLE:
            data = rs.getDouble(index);
            break;
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                        } else {
                            results = new ArrayList();
                            ResultSet rs = stmt.getResultSet();

                            try {
                                ResultSetMetaData metaData = rs.getMetaData();

                                while(rs.next() && (maxRows < 0 || results.size() < maxRows)) {
                                    Map record = new LinkedHashMap();

                                    for (int i = 1; i <= metaData.getColumnCount(); i++) {
                                        String value = rs.getString(i);

                                        if (rs.wasNull()) {
                                            value = getMessageSourceAccessor().getMessage("probe.src.dataSourceTest.sql.null");
                                        } else {
                                            value = HtmlUtils.htmlEscape(value);
                                        }

                                        // a work around for IE browsers bug of not displaying
                                        // a border around an empty table column

                                        if (value.equals("")) {
                                            value = "&nbsp;";
                                        }

                                        record.put(HtmlUtils.htmlEscape(metaData.getColumnName(i)), value);
                                    }

                                    results.add(record);
                                }
                            } finally {
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