Java Code Examples for org.apache.kylin.metadata.model.TableDesc#setName()

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Example 1
Source File: CoprocessorRowType.java    From Kylin with Apache License 2.0 6 votes vote down vote up 
@Override
public CoprocessorRowType deserialize(ByteBuffer in) {
    int n = BytesUtil.readVInt(in);
    TblColRef[] cols = new TblColRef[n];
    int[] colSizes = new int[n];
    for (int i = 0; i < n; i++) {
        String tableName = BytesUtil.readAsciiString(in);
        String colName = BytesUtil.readAsciiString(in);
        TableDesc table = new TableDesc();
        table.setName(tableName);
        ColumnDesc col = new ColumnDesc();
        col.setTable(table);
        col.setName(colName);
        cols[i] = new TblColRef(col);

        int colSize = BytesUtil.readVInt(in);
        colSizes[i] = colSize;
    }
    return new CoprocessorRowType(cols, colSizes);
}
Example 2
Source File: FilterBaseTest.java    From Kylin with Apache License 2.0 6 votes vote down vote up 
protected List<TblColRef> buildGroups() {
    List<TblColRef> groups = new ArrayList<TblColRef>();

    TableDesc t1 = new TableDesc();
    t1.setName("TEST_KYLIN_FACT");
    t1.setDatabase("DEFAULT");
    ColumnDesc c1 = new ColumnDesc();
    c1.setName("CAL_DT");
    c1.setDatatype("String");
    c1.setTable(t1);
    TblColRef cf1 = new TblColRef(c1);
    groups.add(cf1);

    TableDesc t2 = new TableDesc();
    t2.setName("TEST_CATEGORY_GROUPINGS");
    t2.setDatabase("DEFAULT");
    ColumnDesc c2 = new ColumnDesc();
    c2.setName("META_CATEG_NAME");
    c1.setDatatype("String");
    c2.setTable(t2);
    TblColRef cf2 = new TblColRef(c2);
    groups.add(cf2);

    return groups;
}
Example 3
Source File: ColumnTupleFilter.java    From Kylin with Apache License 2.0 6 votes vote down vote up 
@Override
public void deserialize(byte[] bytes) {
    ColumnDesc column = new ColumnDesc();
    ByteBuffer buffer = ByteBuffer.wrap(bytes);
    String tableName = BytesUtil.readUTFString(buffer);
    if (tableName != null) {
        TableDesc table = new TableDesc();
        table.setName(tableName);
        column.setTable(table);
    }

    column.setName(BytesUtil.readUTFString(buffer));
    column.setDatatype(BytesUtil.readUTFString(buffer));

    this.columnRef = new TblColRef(column);
}
Example 4
Source File: StreamingControllerTest.java    From kylin with Apache License 2.0 6 votes vote down vote up 
@Test
public void testReadTableDesc() throws IOException {
    String requestTableData = "{\"name\":\"my_table_name\",\"source_type\":1,\"columns\":[{\"id\":1,\"name\":"
            + "\"amount\",\"datatype\":\"decimal\"},{\"id\":2,\"name\":\"category\",\"datatype\":\"varchar(256)\"},"
            + "{\"id\":3,\"name\":\"order_time\",\"datatype\":\"timestamp\"},{\"id\":4,\"name\":\"device\","
            + "\"datatype\":\"varchar(256)\"},{\"id\":5,\"name\":\"qty\",\"datatype\":\"int\"},{\"id\":6,\"name\":"
            + "\"user_id\",\"datatype\":\"varchar(256)\"},{\"id\":7,\"name\":\"user_age\",\"datatype\":\"int\"},"
            + "{\"id\":8,\"name\":\"user_gender\",\"datatype\":\"varchar(256)\"},{\"id\":9,\"name\":\"currency\","
            + "\"datatype\":\"varchar(256)\"},{\"id\":10,\"name\":\"country\",\"datatype\":\"varchar(256)\"},"
            + "{\"id\":11,\"name\":\"year_start\",\"datatype\":\"date\"},{\"id\":12,\"name\":\"quarter_start\","
            + "\"datatype\":\"date\"},{\"id\":13,\"name\":\"month_start\",\"datatype\":\"date\"},{\"id\":14,"
            + "\"name\":\"week_start\",\"datatype\":\"date\"},{\"id\":15,\"name\":\"day_start\",\"datatype\":"
            + "\"date\"},{\"id\":16,\"name\":\"hour_start\",\"datatype\":\"timestamp\"},{\"id\":17,\"name\":"
            + "\"minute_start\",\"datatype\":\"timestamp\"}],\"database\":\"my_database_name\"}";
    TableDesc desc = JsonUtil.readValue(requestTableData, TableDesc.class);
    String[] dbTable = HadoopUtil.parseHiveTableName(desc.getIdentity());
    desc.setName(dbTable[1]);
    desc.setDatabase(dbTable[0]);
    Assert.assertEquals("my_table_name".toUpperCase(Locale.ROOT), desc.getName());
    Assert.assertEquals("my_database_name".toUpperCase(Locale.ROOT), desc.getDatabase());
}
Example 5
Source File: StreamingControllerTest.java    From kylin-on-parquet-v2 with Apache License 2.0 6 votes vote down vote up 
@Test
public void testReadTableDesc() throws IOException {
    String requestTableData = "{\"name\":\"my_table_name\",\"source_type\":1,\"columns\":[{\"id\":1,\"name\":"
            + "\"amount\",\"datatype\":\"decimal\"},{\"id\":2,\"name\":\"category\",\"datatype\":\"varchar(256)\"},"
            + "{\"id\":3,\"name\":\"order_time\",\"datatype\":\"timestamp\"},{\"id\":4,\"name\":\"device\","
            + "\"datatype\":\"varchar(256)\"},{\"id\":5,\"name\":\"qty\",\"datatype\":\"int\"},{\"id\":6,\"name\":"
            + "\"user_id\",\"datatype\":\"varchar(256)\"},{\"id\":7,\"name\":\"user_age\",\"datatype\":\"int\"},"
            + "{\"id\":8,\"name\":\"user_gender\",\"datatype\":\"varchar(256)\"},{\"id\":9,\"name\":\"currency\","
            + "\"datatype\":\"varchar(256)\"},{\"id\":10,\"name\":\"country\",\"datatype\":\"varchar(256)\"},"
            + "{\"id\":11,\"name\":\"year_start\",\"datatype\":\"date\"},{\"id\":12,\"name\":\"quarter_start\","
            + "\"datatype\":\"date\"},{\"id\":13,\"name\":\"month_start\",\"datatype\":\"date\"},{\"id\":14,"
            + "\"name\":\"week_start\",\"datatype\":\"date\"},{\"id\":15,\"name\":\"day_start\",\"datatype\":"
            + "\"date\"},{\"id\":16,\"name\":\"hour_start\",\"datatype\":\"timestamp\"},{\"id\":17,\"name\":"
            + "\"minute_start\",\"datatype\":\"timestamp\"}],\"database\":\"my_database_name\"}";
    TableDesc desc = JsonUtil.readValue(requestTableData, TableDesc.class);
    String[] dbTable = HadoopUtil.parseHiveTableName(desc.getIdentity());
    desc.setName(dbTable[1]);
    desc.setDatabase(dbTable[0]);
    Assert.assertEquals("my_table_name".toUpperCase(Locale.ROOT), desc.getName());
    Assert.assertEquals("my_database_name".toUpperCase(Locale.ROOT), desc.getDatabase());
}
Example 6
Source File: StorageTest.java    From Kylin with Apache License 2.0 6 votes vote down vote up 
private List<TblColRef> buildGroups() {
    List<TblColRef> groups = new ArrayList<TblColRef>();

    TableDesc t1 = new TableDesc();
    t1.setName("TEST_KYLIN_FACT");
    t1.setDatabase("DEFAULT");
    ColumnDesc c1 = new ColumnDesc();
    c1.setName("CAL_DT");
    c1.setTable(t1);
    c1.setDatatype("string");
    TblColRef cf1 = new TblColRef(c1);
    groups.add(cf1);

    TableDesc t2 = new TableDesc();
    t2.setName("TEST_CATEGORY_GROUPINGS");
    t2.setDatabase("DEFAULT");
    ColumnDesc c2 = new ColumnDesc();
    c2.setName("META_CATEG_NAME");
    c2.setTable(t2);
    c2.setDatatype("string");
    TblColRef cf2 = new TblColRef(c2);
    groups.add(cf2);

    return groups;
}
Example 7
Source File: FilterSerializeTest.java    From Kylin with Apache License 2.0 6 votes vote down vote up 
@Test
public void testSerialize07() {
    TableDesc table = new TableDesc();
    table.setName("TEST_KYLIN_FACT");
    table.setDatabase("DEFAULT");

    ColumnDesc column = new ColumnDesc();
    column.setTable(table);
    TblColRef colRef = new TblColRef(column);
    List<TblColRef> groups = new ArrayList<TblColRef>();
    groups.add(colRef);
    TupleFilter filter = buildCompareFilter(groups, 0);

    byte[] bytes = TupleFilterSerializer.serialize(filter);
    TupleFilter newFilter = TupleFilterSerializer.deserialize(bytes);

    compareFilter(filter, newFilter);
}
Example 8
Source File: CoprocessorRowType.java    From kylin with Apache License 2.0 6 votes vote down vote up 
@Override
public CoprocessorRowType deserialize(ByteBuffer in) {
    int n = BytesUtil.readVInt(in);
    int bodyOffset = BytesUtil.readVInt(in);
    TblColRef[] cols = new TblColRef[n];
    int[] colSizes = new int[n];
    for (int i = 0; i < n; i++) {
        String tableName = BytesUtil.readAsciiString(in);
        String colName = BytesUtil.readAsciiString(in);
        String datatype = BytesUtil.readAsciiString(in);
        TableDesc table = new TableDesc();
        table.setName(tableName);
        ColumnDesc col = new ColumnDesc();
        col.setTable(table);
        col.setName(colName);
        col.setDatatype(datatype);
        col.init(table);
        cols[i] = col.getRef();

        int colSize = BytesUtil.readVInt(in);
        colSizes[i] = colSize;
    }
    return new CoprocessorRowType(cols, colSizes, bodyOffset);
}
Example 9
Source File: JdbcExplorer.java    From kylin with Apache License 2.0 5 votes vote down vote up 
@Override
public Pair<TableDesc, TableExtDesc> loadTableMetadata(String database, String table, String prj)
        throws SQLException {
    TableDesc tableDesc = new TableDesc();
    tableDesc.setDatabase(database.toUpperCase(Locale.ROOT));
    tableDesc.setName(table.toUpperCase(Locale.ROOT));
    tableDesc.setUuid(RandomUtil.randomUUID().toString());
    tableDesc.setLastModified(0);
    tableDesc.setSourceType(ISourceAware.ID_JDBC);

    Connection con = SqlUtil.getConnection(dbconf);
    DatabaseMetaData dbmd = con.getMetaData();

    try (ResultSet rs = jdbcMetadataDialect.getTable(dbmd, database, table)) {
        String tableType = null;
        while (rs.next()) {
            tableType = rs.getString("TABLE_TYPE");
        }
        if (tableType != null) {
            tableDesc.setTableType(tableType);
        } else {
            throw new RuntimeException(
                    String.format(Locale.ROOT, "table %s not found in schema:%s", table, database));
        }
    }

    try (ResultSet rs = jdbcMetadataDialect.listColumns(dbmd, database, table)) {
        tableDesc.setColumns(extractColumnFromMeta(rs));
    } finally {
        DBUtils.closeQuietly(con);
    }

    TableExtDesc tableExtDesc = new TableExtDesc();
    tableExtDesc.setIdentity(tableDesc.getIdentity());
    tableExtDesc.setUuid(RandomUtil.randomUUID().toString());
    tableExtDesc.setLastModified(0);
    tableExtDesc.init(prj);

    return Pair.newPair(tableDesc, tableExtDesc);
}
Example 10
Source File: AggregateRegionObserverTest.java    From Kylin with Apache License 2.0 5 votes vote down vote up 
private CoprocessorRowType newRowType() {
    TableDesc t = new TableDesc();
    t.setName("TABLE");
    t.setDatabase("DEFAULT");
    TblColRef[] cols = new TblColRef[] { newCol("A", t), newCol("B", t), newCol("C", t), newCol("D", t) };
    int[] sizes = new int[] { 1, 1, 1, 1 };
    return new CoprocessorRowType(cols, sizes);
}
Example 11
Source File: CacheServiceTest.java    From Kylin with Apache License 2.0 5 votes vote down vote up 
private TableDesc createTestTableDesc() {
    TableDesc tableDesc = new TableDesc();
    tableDesc.setDatabase("TEST_DB");
    tableDesc.setName("TEST_TABLE");
    tableDesc.setUuid(UUID.randomUUID().toString());
    tableDesc.setLastModified(0);
    return tableDesc;
}
Example 12
Source File: FilterSerializeTest.java    From kylin with Apache License 2.0 5 votes vote down vote up 
@Test
public void testSerialize07() {
    TableDesc table = new TableDesc();
    table.setName("TEST_KYLIN_FACT");
    table.setDatabase("DEFAULT");

    ColumnDesc column = new ColumnDesc();
    column.setTable(table);
    TblColRef colRef = column.getRef();
    List<TblColRef> groups = new ArrayList<TblColRef>();
    groups.add(colRef);

    assertFilterSerDe(buildEQCompareFilter(groups, 0));
}
Example 13
Source File: CacheServiceTest.java    From kylin with Apache License 2.0 5 votes vote down vote up 
private TableDesc createTestTableDesc() {
    TableDesc tableDesc = new TableDesc();
    tableDesc.setDatabase("TEST_DB");
    tableDesc.setName("TEST_TABLE");
    tableDesc.setUuid(RandomUtil.randomUUID().toString());
    tableDesc.setLastModified(0);
    return tableDesc;
}
Example 14
Source File: KylinTableCreator.java    From kylin with Apache License 2.0 5 votes vote down vote up 
public static TableDesc generateKylinTable(KylinConfig kylinConfig, MetricsSinkDesc sinkDesc, String subject,
                                           List<Pair<String, String>> columns) {
    TableDesc kylinTable = new TableDesc();

    Pair<String, String> tableNameSplits = ActiveReservoirReporter
            .getTableNameSplits(sinkDesc.getTableNameForMetrics(subject));
    kylinTable.setUuid(RandomUtil.randomUUID().toString());
    kylinTable.setDatabase(tableNameSplits.getFirst());
    kylinTable.setName(tableNameSplits.getSecond());
    kylinTable.setTableType(null);
    kylinTable.setLastModified(0L);
    kylinTable.setSourceType(sinkDesc.getSourceType());

    ColumnDesc[] columnDescs = new ColumnDesc[columns.size()];
    for (int i = 0; i < columns.size(); i++) {
        columnDescs[i] = new ColumnDesc();
        Pair<String, String> entry = columns.get(i);
        columnDescs[i].setId(Integer.toString(i + 1));
        columnDescs[i].setName(entry.getFirst());
        columnDescs[i].setDatatype(entry.getSecond());
    }
    kylinTable.setColumns(columnDescs);

    kylinTable.init(kylinConfig, MetricsManager.SYSTEM_PROJECT);

    return kylinTable;
}
Example 15
Source File: TableService.java    From kylin-on-parquet-v2 with Apache License 2.0 5 votes vote down vote up 
public TableDesc generateCsvTableDesc(String tableName, List<String> columnDescList) throws IOException {
    String[] strs = tableName.split("\\.");
    if (strs.length != 2) {
        throw new IllegalArgumentException("Invalid table name + '" + tableName + "'");
    }
    TableDesc tableDesc = new TableDesc();

    tableDesc.setDatabase(strs[0]);
    tableDesc.setName(strs[1]);
    tableDesc.setUuid(RandomUtil.randomUUID().toString());
    tableDesc.setLastModified(0);
    tableDesc.setSourceType(ISourceAware.ID_SPARK);
    List<ColumnDesc> columnDescs = new ArrayList<>();
    int index = 0;

    for (String csvColumnDescStr : columnDescList) {
        index++;
        ColumnDesc columnDesc = new ColumnDesc();
        CsvColumnDesc csvColumnDesc = JsonUtil.readValue(csvColumnDescStr, CsvColumnDesc.class);
        columnDesc.setId("" + index);
        columnDesc.setName((csvColumnDesc).getName());
        columnDesc.setDatatype((csvColumnDesc).getType());
        columnDescs.add(columnDesc);
    }

    tableDesc.setColumns(columnDescs.toArray(new ColumnDesc[columnDescs.size()]));

    return tableDesc;
}
Example 16
Source File: FilterSerializeTest.java    From kylin-on-parquet-v2 with Apache License 2.0 5 votes vote down vote up 
@Test
public void testSerialize07() {
    TableDesc table = new TableDesc();
    table.setName("TEST_KYLIN_FACT");
    table.setDatabase("DEFAULT");

    ColumnDesc column = new ColumnDesc();
    column.setTable(table);
    TblColRef colRef = column.getRef();
    List<TblColRef> groups = new ArrayList<TblColRef>();
    groups.add(colRef);

    assertFilterSerDe(buildEQCompareFilter(groups, 0));
}
Example 17
Source File: CacheServiceTest.java    From kylin-on-parquet-v2 with Apache License 2.0 5 votes vote down vote up 
private TableDesc createTestTableDesc() {
    TableDesc tableDesc = new TableDesc();
    tableDesc.setDatabase("TEST_DB");
    tableDesc.setName("TEST_TABLE");
    tableDesc.setUuid(RandomUtil.randomUUID().toString());
    tableDesc.setLastModified(0);
    return tableDesc;
}
Example 18
Source File: JdbcExplorer.java    From kylin-on-parquet-v2 with Apache License 2.0 5 votes vote down vote up 
@Override
public Pair<TableDesc, TableExtDesc> loadTableMetadata(String database, String table, String prj)
        throws SQLException {
    TableDesc tableDesc = new TableDesc();
    tableDesc.setDatabase(database.toUpperCase(Locale.ROOT));
    tableDesc.setName(table.toUpperCase(Locale.ROOT));
    tableDesc.setUuid(RandomUtil.randomUUID().toString());
    tableDesc.setLastModified(0);
    tableDesc.setSourceType(ISourceAware.ID_JDBC);

    Connection con = SqlUtil.getConnection(dbconf);
    DatabaseMetaData dbmd = con.getMetaData();

    try (ResultSet rs = jdbcMetadataDialect.getTable(dbmd, database, table)) {
        String tableType = null;
        while (rs.next()) {
            tableType = rs.getString("TABLE_TYPE");
        }
        if (tableType != null) {
            tableDesc.setTableType(tableType);
        } else {
            throw new RuntimeException(
                    String.format(Locale.ROOT, "table %s not found in schema:%s", table, database));
        }
    }

    try (ResultSet rs = jdbcMetadataDialect.listColumns(dbmd, database, table)) {
        tableDesc.setColumns(extractColumnFromMeta(rs));
    } finally {
        DBUtils.closeQuietly(con);
    }

    TableExtDesc tableExtDesc = new TableExtDesc();
    tableExtDesc.setIdentity(tableDesc.getIdentity());
    tableExtDesc.setUuid(RandomUtil.randomUUID().toString());
    tableExtDesc.setLastModified(0);
    tableExtDesc.init(prj);

    return Pair.newPair(tableDesc, tableExtDesc);
}
Example 19
Source File: JdbcExplorer.java    From kylin with Apache License 2.0 4 votes vote down vote up 
@Override
public Pair<TableDesc, TableExtDesc> loadTableMetadata(String database, String table, String prj)
        throws SQLException {
    TableDesc tableDesc = new TableDesc();
    tableDesc.setDatabase(database.toUpperCase(Locale.ROOT));
    tableDesc.setName(table.toUpperCase(Locale.ROOT));
    tableDesc.setUuid(UUID.randomUUID().toString());
    tableDesc.setLastModified(0);
    tableDesc.setProject(prj);
    tableDesc.setSourceType(JdbcSource.SOURCE_ID);

    try (CachedRowSet tables = dataSource.getTable(database, table)) {
        String tableType = null;
        while (tables.next()) {
            tableType = tables.getString("TABLE_TYPE");
        }
        if (tableType != null) {
            tableDesc.setTableType(tableType);
        } else {
            throw new RuntimeException(String.format(Locale.ROOT, "table %s not found in schema:%s", table, database));
        }
    }

    try (CachedRowSet columns = dataSource.listColumns(database, table)) {
        List<ColumnDesc> columnDescs = new ArrayList<>();

        while (columns.next()) {
            String cname = columns.getString("COLUMN_NAME");
            int type = columns.getInt("DATA_TYPE");
            int csize = columns.getInt("COLUMN_SIZE");
            int digits = columns.getInt("DECIMAL_DIGITS");
            int pos = columns.getInt("ORDINAL_POSITION");
            String remarks = columns.getString("REMARKS");

            ColumnDesc cdesc = new ColumnDesc();
            cdesc.setName(cname.toUpperCase(Locale.ROOT));

            String kylinType = dataSource.toKylinTypeName(type);
            if ("any".equals(kylinType)) {
                String typeName = columns.getString("TYPE_NAME");
                int kylinTypeId = dataSource.toKylinTypeId(typeName, type);
                kylinType = dataSource.toKylinTypeName(kylinTypeId);
            }
            int precision = (SqlUtil.isPrecisionApplicable(kylinType) && csize > 0) ? csize : -1;
            precision = Math.min(precision, KylinConfig.getInstanceFromEnv().getDefaultVarcharPrecision());
            int scale = (SqlUtil.isScaleApplicable(kylinType) && digits > 0) ? digits : -1;

            cdesc.setDatatype(new DataType(kylinType, precision, scale).toString());
            cdesc.setId(String.valueOf(pos));
            cdesc.setComment(remarks);
            columnDescs.add(cdesc);
        }

        tableDesc.setColumns(columnDescs.toArray(new ColumnDesc[columnDescs.size()]));

        TableExtDesc tableExtDesc = new TableExtDesc();
        tableExtDesc.setIdentity(tableDesc.getIdentity());
        tableExtDesc.setUuid(UUID.randomUUID().toString());
        tableExtDesc.setLastModified(0);
        tableExtDesc.init(prj);

        return Pair.newPair(tableDesc, tableExtDesc);
    }
}
Example 20
Source File: JdbcExplorer.java    From kylin-on-parquet-v2 with Apache License 2.0 4 votes vote down vote up 
@Override
public Pair<TableDesc, TableExtDesc> loadTableMetadata(String database, String table, String prj)
        throws SQLException {
    TableDesc tableDesc = new TableDesc();
    tableDesc.setDatabase(database.toUpperCase(Locale.ROOT));
    tableDesc.setName(table.toUpperCase(Locale.ROOT));
    tableDesc.setUuid(UUID.randomUUID().toString());
    tableDesc.setLastModified(0);
    tableDesc.setProject(prj);
    tableDesc.setSourceType(JdbcSource.SOURCE_ID);

    try (CachedRowSet tables = dataSource.getTable(database, table)) {
        String tableType = null;
        while (tables.next()) {
            tableType = tables.getString("TABLE_TYPE");
        }
        if (tableType != null) {
            tableDesc.setTableType(tableType);
        } else {
            throw new RuntimeException(String.format(Locale.ROOT, "table %s not found in schema:%s", table, database));
        }
    }

    try (CachedRowSet columns = dataSource.listColumns(database, table)) {
        List<ColumnDesc> columnDescs = new ArrayList<>();

        while (columns.next()) {
            String cname = columns.getString("COLUMN_NAME");
            int type = columns.getInt("DATA_TYPE");
            int csize = columns.getInt("COLUMN_SIZE");
            int digits = columns.getInt("DECIMAL_DIGITS");
            int pos = columns.getInt("ORDINAL_POSITION");
            String remarks = columns.getString("REMARKS");

            ColumnDesc cdesc = new ColumnDesc();
            cdesc.setName(cname.toUpperCase(Locale.ROOT));

            String kylinType = dataSource.toKylinTypeName(type);
            if ("any".equals(kylinType)) {
                String typeName = columns.getString("TYPE_NAME");
                int kylinTypeId = dataSource.toKylinTypeId(typeName, type);
                kylinType = dataSource.toKylinTypeName(kylinTypeId);
            }
            int precision = (SqlUtil.isPrecisionApplicable(kylinType) && csize > 0) ? csize : -1;
            precision = Math.min(precision, KylinConfig.getInstanceFromEnv().getDefaultVarcharPrecision());
            int scale = (SqlUtil.isScaleApplicable(kylinType) && digits > 0) ? digits : -1;

            cdesc.setDatatype(new DataType(kylinType, precision, scale).toString());
            cdesc.setId(String.valueOf(pos));
            cdesc.setComment(remarks);
            columnDescs.add(cdesc);
        }

        tableDesc.setColumns(columnDescs.toArray(new ColumnDesc[columnDescs.size()]));

        TableExtDesc tableExtDesc = new TableExtDesc();
        tableExtDesc.setIdentity(tableDesc.getIdentity());
        tableExtDesc.setUuid(UUID.randomUUID().toString());
        tableExtDesc.setLastModified(0);
        tableExtDesc.init(prj);

        return Pair.newPair(tableDesc, tableExtDesc);
    }
}