Examples with DataScanner herddb.model.DataScanner used on opensource projects

Example 16 with DataScanner

use of herddb.model.DataScanner in project herddb by diennea.

the class RawSQLTest method multipleColumnPrimaryKeyTest.

@Test
public void multipleColumnPrimaryKeyTest() throws Exception {
    String nodeId = "localhost";
    try (DBManager manager = new DBManager("localhost", new MemoryMetadataStorageManager(), new MemoryDataStorageManager(), new MemoryCommitLogManager(), null, null)) {
        manager.start();
        CreateTableSpaceStatement st1 = new CreateTableSpaceStatement("tblspace1", Collections.singleton(nodeId), nodeId, 1, 0, 0);
        manager.executeStatement(st1, StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), TransactionContext.NO_TRANSACTION);
        manager.waitForTablespace("tblspace1", 10000);
        execute(manager, "CREATE TABLE tblspace1.tsql (k1 string," + "n1 int," + "s1 string, " + "primary key (k1,n1)" + ")", Collections.emptyList());
        assertEquals(1, executeUpdate(manager, "INSERT INTO tblspace1.tsql(k1,n1) values(?,?)", Arrays.asList("mykey", Integer.valueOf(1234))).getUpdateCount());
        try (DataScanner scan1 = scan(manager, "SELECT k1 as theKey,'one' as theStringConstant,3  LongConstant FROM tblspace1.tsql where k1 ='mykey'", Collections.emptyList())) {
            assertEquals(1, scan1.consume().size());
        }
        assertEquals(1, executeUpdate(manager, "INSERT INTO tblspace1.tsql(k1,n1) values(?,?)", Arrays.asList("mykey", Integer.valueOf(1235))).getUpdateCount());
        try (DataScanner scan1 = scan(manager, "SELECT k1 as theKey,'one' as theStringConstant,3  LongConstant FROM tblspace1.tsql where k1 ='mykey'", Collections.emptyList())) {
            assertEquals(2, scan1.consume().size());
        }
        try {
            assertEquals(1, executeUpdate(manager, "INSERT INTO tblspace1.tsql(k1,n1) values(?,?)", Arrays.asList("mykey", Integer.valueOf(1235))).getUpdateCount());
            fail();
        } catch (DuplicatePrimaryKeyException err) {
        }
        try (DataScanner scan1 = scan(manager, "SELECT k1,n1  FROM tblspace1.tsql where k1 ='mykey' order by n1", Collections.emptyList())) {
            List<DataAccessor> rows = scan1.consume();
            assertEquals(2, rows.size());
            assertEquals(1234, rows.get(0).get("n1"));
            assertEquals(1235, rows.get(1).get("n1"));
        }
        try (DataScanner scan1 = scan(manager, "SELECT k1,n1 FROM tblspace1.tsql where k1 ='mykey' and n1=1234", Collections.emptyList())) {
            assertEquals(1, scan1.consume().size());
        }
        assertEquals(1, executeUpdate(manager, "INSERT INTO tblspace1.tsql(n1,k1) values(?,?)", Arrays.asList(Integer.valueOf(1236), "mykey")).getUpdateCount());
        try (DataScanner scan1 = scan(manager, "SELECT k1,n1  FROM tblspace1.tsql where k1 ='mykey' order by n1 desc", Collections.emptyList())) {
            List<DataAccessor> rows = scan1.consume();
            assertEquals(3, rows.size());
            assertEquals(1236, rows.get(0).get("n1"));
            assertEquals(1235, rows.get(1).get("n1"));
            assertEquals(1234, rows.get(2).get("n1"));
        }
        try (DataScanner scan1 = scan(manager, "SELECT k1,n1 FROM tblspace1.tsql where k1 ='mykey' and n1=1234", Collections.emptyList())) {
            assertEquals(1, scan1.consume().size());
        }
        try (DataScanner scan1 = scan(manager, "SELECT k1,n1 FROM tblspace1.tsql where k1 ='mykey'", Collections.emptyList())) {
            assertEquals(3, scan1.consume().size());
        }
        assertEquals(1, executeUpdate(manager, "UPDATE tblspace1.tsql set s1=? where k1 =? and n1=?", Arrays.asList("newvalue", "mykey", Integer.valueOf(1236))).getUpdateCount());
        try (DataScanner scan1 = scan(manager, "SELECT k1,n1,s1 FROM tblspace1.tsql where k1 ='mykey' and n1=1236", Collections.emptyList())) {
            List<DataAccessor> rows = scan1.consume();
            assertEquals(1, rows.size());
            assertEquals(RawString.of("newvalue"), rows.get(0).get("s1"));
        }
        assertEquals(1, executeUpdate(manager, "DELETE FROM tblspace1.tsql where k1 =? and n1=?", Arrays.asList("mykey", Integer.valueOf(1236))).getUpdateCount());
        try (DataScanner scan1 = scan(manager, "SELECT k1,n1 FROM tblspace1.tsql where k1 ='mykey' and n1=1236", Collections.emptyList())) {
            assertEquals(0, scan1.consume().size());
        }
    }
}

Example 17 with DataScanner

use of herddb.model.DataScanner in project herddb by diennea.

the class RawSQLTest method orderByTest.

@Test
public void orderByTest() throws Exception {
    String nodeId = "localhost";
    try (DBManager manager = new DBManager("localhost", new MemoryMetadataStorageManager(), new MemoryDataStorageManager(), new MemoryCommitLogManager(), null, null)) {
        manager.start();
        CreateTableSpaceStatement st1 = new CreateTableSpaceStatement("tblspace1", Collections.singleton(nodeId), nodeId, 1, 0, 0);
        manager.executeStatement(st1, StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), TransactionContext.NO_TRANSACTION);
        manager.waitForTablespace("tblspace1", 10000);
        execute(manager, "CREATE TABLE tblspace1.tsql (k1 string primary key,n1 int,s1 string)", Collections.emptyList());
        assertEquals(1, executeUpdate(manager, "INSERT INTO tblspace1.tsql(k1,n1) values(?,?)", Arrays.asList("mykey", Integer.valueOf(1))).getUpdateCount());
        assertEquals(1, executeUpdate(manager, "INSERT INTO tblspace1.tsql(k1,n1) values(?,?)", Arrays.asList("mykey2", Integer.valueOf(2))).getUpdateCount());
        assertEquals(1, executeUpdate(manager, "INSERT INTO tblspace1.tsql(k1,n1) values(?,?)", Arrays.asList("mykey3", Integer.valueOf(4))).getUpdateCount());
        assertEquals(1, executeUpdate(manager, "INSERT INTO tblspace1.tsql(k1) values(?)", Arrays.asList("mykey4")).getUpdateCount());
        {
            TranslatedQuery translate1 = manager.getPlanner().translate(TableSpace.DEFAULT, "SELECT k1 FROM tblspace1.tsql order by n1", Collections.emptyList(), true, true, false, -1);
            ScanStatement scan = translate1.plan.mainStatement.unwrap(ScanStatement.class);
            try (DataScanner scan1 = manager.scan(scan, translate1.context, TransactionContext.NO_TRANSACTION)) {
                List<DataAccessor> result = scan1.consume();
                assertEquals(4, result.size());
                assertEquals(RawString.of("mykey"), result.get(0).get(0));
                assertEquals(RawString.of("mykey2"), result.get(1).get(0));
                assertEquals(RawString.of("mykey3"), result.get(2).get(0));
                // NULLS LAST
                assertEquals(RawString.of("mykey4"), result.get(3).get(0));
            }
        }
        {
            TranslatedQuery translate1 = manager.getPlanner().translate(TableSpace.DEFAULT, "SELECT k1 FROM tblspace1.tsql order by n1 desc", Collections.emptyList(), true, true, false, -1);
            ScanStatement scan = translate1.plan.mainStatement.unwrap(ScanStatement.class);
            try (DataScanner scan1 = manager.scan(scan, translate1.context, TransactionContext.NO_TRANSACTION)) {
                List<DataAccessor> result = scan1.consume();
                assertEquals(4, result.size());
                assertEquals(RawString.of("mykey"), result.get(3).get(0));
                assertEquals(RawString.of("mykey2"), result.get(2).get(0));
                assertEquals(RawString.of("mykey3"), result.get(1).get(0));
                assertEquals(RawString.of("mykey4"), result.get(0).get(0));
            }
        }
        assertEquals(1, executeUpdate(manager, "INSERT INTO tblspace1.tsql(k1,n1) values(?,?)", Arrays.asList("mykey5", Integer.valueOf(3))).getUpdateCount());
        {
            TranslatedQuery translate1 = manager.getPlanner().translate(TableSpace.DEFAULT, "SELECT k1 FROM tblspace1.tsql order by n1, k1", Collections.emptyList(), true, true, false, -1);
            ScanStatement scan = translate1.plan.mainStatement.unwrap(ScanStatement.class);
            try (DataScanner scan1 = manager.scan(scan, translate1.context, TransactionContext.NO_TRANSACTION)) {
                List<DataAccessor> result = scan1.consume();
                assertEquals(5, result.size());
                assertEquals(RawString.of("mykey"), result.get(0).get(0));
                assertEquals(RawString.of("mykey2"), result.get(1).get(0));
                assertEquals(RawString.of("mykey5"), result.get(2).get(0));
                assertEquals(RawString.of("mykey3"), result.get(3).get(0));
                // NULLS LAST
                assertEquals(RawString.of("mykey4"), result.get(4).get(0));
            }
        }
        {
            TranslatedQuery translate1 = manager.getPlanner().translate(TableSpace.DEFAULT, "SELECT k1 FROM tblspace1.tsql order by n1, k1 desc", Collections.emptyList(), true, true, false, -1);
            ScanStatement scan = translate1.plan.mainStatement.unwrap(ScanStatement.class);
            try (DataScanner scan1 = manager.scan(scan, translate1.context, TransactionContext.NO_TRANSACTION)) {
                List<DataAccessor> result = scan1.consume();
                assertEquals(5, result.size());
                assertEquals(RawString.of("mykey"), result.get(0).get(0));
                assertEquals(RawString.of("mykey2"), result.get(1).get(0));
                assertEquals(RawString.of("mykey5"), result.get(2).get(0));
                assertEquals(RawString.of("mykey3"), result.get(3).get(0));
                // NULLS LAST
                assertEquals(RawString.of("mykey4"), result.get(4).get(0));
            }
        }
        {
            TranslatedQuery translate1 = manager.getPlanner().translate(TableSpace.DEFAULT, "SELECT k1 FROM tblspace1.tsql order by n1, k1 desc limit 2", Collections.emptyList(), true, true, false, -1);
            ScanStatement scan = translate1.plan.mainStatement.unwrap(ScanStatement.class);
            try (DataScanner scan1 = manager.scan(scan, translate1.context, TransactionContext.NO_TRANSACTION)) {
                List<DataAccessor> result = scan1.consume();
                assertEquals(2, result.size());
                assertEquals(RawString.of("mykey"), result.get(0).get(0));
                assertEquals(RawString.of("mykey2"), result.get(1).get(0));
            }
        }
        {
            TranslatedQuery translate1 = manager.getPlanner().translate(TableSpace.DEFAULT, "SELECT k1 FROM tblspace1.tsql order by n1 asc limit 2", Collections.emptyList(), true, true, false, -1);
            ScanStatement scan = translate1.plan.mainStatement.unwrap(ScanStatement.class);
            try (DataScanner scan1 = manager.scan(scan, translate1.context, TransactionContext.NO_TRANSACTION)) {
                List<DataAccessor> result = scan1.consume();
                assertEquals(2, result.size());
                assertEquals(RawString.of("mykey"), result.get(0).get(0));
                assertEquals(RawString.of("mykey2"), result.get(1).get(0));
            }
        }
        {
            TranslatedQuery translate1 = manager.getPlanner().translate(TableSpace.DEFAULT, "SELECT k1 FROM tblspace1.tsql order by n1 desc limit 3", Collections.emptyList(), true, true, false, -1);
            ScanStatement scan = translate1.plan.mainStatement.unwrap(ScanStatement.class);
            try (DataScanner scan1 = manager.scan(scan, translate1.context, TransactionContext.NO_TRANSACTION)) {
                List<DataAccessor> result = scan1.consume();
                assertEquals(3, result.size());
                assertEquals(RawString.of("mykey4"), result.get(0).get(0));
                assertEquals(RawString.of("mykey3"), result.get(1).get(0));
                assertEquals(RawString.of("mykey5"), result.get(2).get(0));
            }
        }
    }
}

Example 18 with DataScanner

use of herddb.model.DataScanner in project herddb by diennea.

the class RestartTest method recoverTableAndIndexNoData.

/**
 * Evaluate that a recover work even on a table without any data inserted
 */
@Test
public void recoverTableAndIndexNoData() throws Exception {
    Path dataPath = folder.newFolder("data").toPath();
    Path logsPath = folder.newFolder("logs").toPath();
    Path metadataPath = folder.newFolder("metadata").toPath();
    Path tmoDir = folder.newFolder("tmoDir").toPath();
    String nodeId = "localhost";
    Table table;
    Index index;
    try (DBManager manager = new DBManager("localhost", new FileMetadataStorageManager(metadataPath), new FileDataStorageManager(dataPath), new FileCommitLogManager(logsPath, 64 * 1024 * 1024), tmoDir, null)) {
        manager.start();
        CreateTableSpaceStatement st1 = new CreateTableSpaceStatement("tblspace1", Collections.singleton(nodeId), nodeId, 1, 0, 0);
        manager.executeStatement(st1, StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), TransactionContext.NO_TRANSACTION);
        assertTrue(manager.waitForTablespace("tblspace1", 10000));
        ;
        table = Table.builder().tablespace("tblspace1").name("t1").column("id", ColumnTypes.INTEGER).column("name", ColumnTypes.STRING).primaryKey("id").build();
        index = Index.builder().onTable(table).column("name", ColumnTypes.STRING).type(Index.TYPE_BRIN).build();
        manager.executeStatement(new CreateTableStatement(table), StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), TransactionContext.NO_TRANSACTION);
        manager.executeStatement(new CreateIndexStatement(index), StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), TransactionContext.NO_TRANSACTION);
        GetResult result = manager.get(new GetStatement("tblspace1", table.name, Bytes.from_int(1), null, false), StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), TransactionContext.NO_TRANSACTION);
        assertFalse(result.found());
        /* Access through index  */
        TranslatedQuery translated = manager.getPlanner().translate(TableSpace.DEFAULT, "SELECT * FROM tblspace1.t1 WHERE name=\'uno\'", Collections.emptyList(), true, true, false, -1);
        ScanStatement scan = translated.plan.mainStatement.unwrap(ScanStatement.class);
        assertTrue(scan.getPredicate().getIndexOperation() instanceof SecondaryIndexSeek);
        try (DataScanner scan1 = manager.scan(scan, translated.context, TransactionContext.NO_TRANSACTION)) {
            assertEquals(0, scan1.consume().size());
        }
        manager.checkpoint();
    }
    try (DBManager manager = new DBManager("localhost", new FileMetadataStorageManager(metadataPath), new FileDataStorageManager(dataPath), new FileCommitLogManager(logsPath, 64 * 1024 * 1024), tmoDir, null)) {
        manager.start();
        assertTrue(manager.waitForBootOfLocalTablespaces(10000));
        /* Access through key to page */
        GetResult result = manager.get(new GetStatement("tblspace1", table.name, Bytes.from_int(1), null, false), StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), TransactionContext.NO_TRANSACTION);
        assertFalse(result.found());
        /* Access through index  */
        TranslatedQuery translated = manager.getPlanner().translate(TableSpace.DEFAULT, "SELECT * FROM tblspace1.t1 WHERE name=\'uno\'", Collections.emptyList(), true, true, false, -1);
        ScanStatement scan = translated.plan.mainStatement.unwrap(ScanStatement.class);
        assertTrue(scan.getPredicate().getIndexOperation() instanceof SecondaryIndexSeek);
        try (DataScanner scan1 = manager.scan(scan, translated.context, TransactionContext.NO_TRANSACTION)) {
            assertEquals(0, scan1.consume().size());
        }
    }
}

Example 19 with DataScanner

use of herddb.model.DataScanner in project herddb by diennea.

the class RestartTest method recoverTableAndIndexWithCheckpoint.

@Test
public void recoverTableAndIndexWithCheckpoint() throws Exception {
    Path dataPath = folder.newFolder("data").toPath();
    Path logsPath = folder.newFolder("logs").toPath();
    Path metadataPath = folder.newFolder("metadata").toPath();
    Path tmoDir = folder.newFolder("tmoDir").toPath();
    String nodeId = "localhost";
    Table table;
    Index index;
    try (DBManager manager = new DBManager("localhost", new FileMetadataStorageManager(metadataPath), new FileDataStorageManager(dataPath), new FileCommitLogManager(logsPath, 64 * 1024 * 1024), tmoDir, null)) {
        manager.start();
        CreateTableSpaceStatement st1 = new CreateTableSpaceStatement("tblspace1", Collections.singleton(nodeId), nodeId, 1, 0, 0);
        manager.executeStatement(st1, StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), TransactionContext.NO_TRANSACTION);
        assertTrue(manager.waitForTablespace("tblspace1", 10000));
        ;
        table = Table.builder().tablespace("tblspace1").name("t1").column("id", ColumnTypes.INTEGER).column("name", ColumnTypes.STRING).primaryKey("id").build();
        index = Index.builder().onTable(table).column("name", ColumnTypes.STRING).type(Index.TYPE_BRIN).build();
        manager.executeStatement(new CreateTableStatement(table), StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), TransactionContext.NO_TRANSACTION);
        manager.executeStatement(new CreateIndexStatement(index), StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), TransactionContext.NO_TRANSACTION);
        manager.executeStatement(new InsertStatement("tblspace1", table.name, RecordSerializer.makeRecord(table, "id", 1, "name", "uno")), StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), TransactionContext.NO_TRANSACTION);
        GetResult result = manager.get(new GetStatement("tblspace1", table.name, Bytes.from_int(1), null, false), StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), TransactionContext.NO_TRANSACTION);
        assertTrue(result.found());
        /* Access through index  */
        TranslatedQuery translated = manager.getPlanner().translate(TableSpace.DEFAULT, "SELECT * FROM tblspace1.t1 WHERE name=\'uno\'", Collections.emptyList(), true, true, false, -1);
        ScanStatement scan = translated.plan.mainStatement.unwrap(ScanStatement.class);
        assertTrue(scan.getPredicate().getIndexOperation() instanceof SecondaryIndexSeek);
        try (DataScanner scan1 = manager.scan(scan, translated.context, TransactionContext.NO_TRANSACTION)) {
            assertEquals(1, scan1.consume().size());
        }
        manager.checkpoint();
    }
    try (DBManager manager = new DBManager("localhost", new FileMetadataStorageManager(metadataPath), new FileDataStorageManager(dataPath), new FileCommitLogManager(logsPath, 64 * 1024 * 1024), tmoDir, null)) {
        manager.start();
        assertTrue(manager.waitForBootOfLocalTablespaces(10000));
        /* Access through key to page */
        GetResult result = manager.get(new GetStatement("tblspace1", table.name, Bytes.from_int(1), null, false), StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), TransactionContext.NO_TRANSACTION);
        assertTrue(result.found());
        /* Access through index  */
        TranslatedQuery translated = manager.getPlanner().translate(TableSpace.DEFAULT, "SELECT * FROM tblspace1.t1 WHERE name=\'uno\'", Collections.emptyList(), true, true, false, -1);
        ScanStatement scan = translated.plan.mainStatement.unwrap(ScanStatement.class);
        assertTrue(scan.getPredicate().getIndexOperation() instanceof SecondaryIndexSeek);
        try (DataScanner scan1 = manager.scan(scan, translated.context, TransactionContext.NO_TRANSACTION)) {
            assertEquals(1, scan1.consume().size());
        }
    }
}

Example 20 with DataScanner

use of herddb.model.DataScanner in project herddb by diennea.

the class RestartTest method recoverTableAndIndexNoCheckpoint.

@Test
public void recoverTableAndIndexNoCheckpoint() throws Exception {
    Path dataPath = folder.newFolder("data").toPath();
    Path logsPath = folder.newFolder("logs").toPath();
    Path metadataPath = folder.newFolder("metadata").toPath();
    Path tmoDir = folder.newFolder("tmoDir").toPath();
    String nodeId = "localhost";
    Table table;
    Index index;
    try (DBManager manager = new DBManager("localhost", new FileMetadataStorageManager(metadataPath), new FileDataStorageManager(dataPath), new FileCommitLogManager(logsPath, 64 * 1024 * 1024), tmoDir, null)) {
        manager.start();
        CreateTableSpaceStatement st1 = new CreateTableSpaceStatement("tblspace1", Collections.singleton(nodeId), nodeId, 1, 0, 0);
        manager.executeStatement(st1, StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), TransactionContext.NO_TRANSACTION);
        assertTrue(manager.waitForTablespace("tblspace1", 10000));
        ;
        table = Table.builder().tablespace("tblspace1").name("t1").column("id", ColumnTypes.INTEGER).column("name", ColumnTypes.STRING).primaryKey("id").build();
        index = Index.builder().onTable(table).column("name", ColumnTypes.STRING).type(Index.TYPE_BRIN).build();
        manager.executeStatement(new CreateTableStatement(table), StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), TransactionContext.NO_TRANSACTION);
        manager.executeStatement(new CreateIndexStatement(index), StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), TransactionContext.NO_TRANSACTION);
        manager.executeStatement(new InsertStatement("tblspace1", table.name, RecordSerializer.makeRecord(table, "id", 1, "name", "uno")), StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), TransactionContext.NO_TRANSACTION);
        GetResult result = manager.get(new GetStatement("tblspace1", table.name, Bytes.from_int(1), null, false), StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), TransactionContext.NO_TRANSACTION);
        assertTrue(result.found());
        /* Access through index  */
        TranslatedQuery translated = manager.getPlanner().translate(TableSpace.DEFAULT, "SELECT * FROM tblspace1.t1 WHERE name=\'uno\'", Collections.emptyList(), true, true, false, -1);
        ScanStatement scan = translated.plan.mainStatement.unwrap(ScanStatement.class);
        assertTrue(scan.getPredicate().getIndexOperation() instanceof SecondaryIndexSeek);
        try (DataScanner scan1 = manager.scan(scan, translated.context, TransactionContext.NO_TRANSACTION)) {
            assertEquals(1, scan1.consume().size());
        }
    // no checkpoint
    }
    try (DBManager manager = new DBManager("localhost", new FileMetadataStorageManager(metadataPath), new FileDataStorageManager(dataPath), new FileCommitLogManager(logsPath, 64 * 1024 * 1024), tmoDir, null)) {
        manager.start();
        assertTrue(manager.waitForBootOfLocalTablespaces(30000));
        /* Access through key to page */
        GetResult result = manager.get(new GetStatement("tblspace1", table.name, Bytes.from_int(1), null, false), StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), TransactionContext.NO_TRANSACTION);
        assertTrue(result.found());
        /* Access through index  */
        TranslatedQuery translated = manager.getPlanner().translate(TableSpace.DEFAULT, "SELECT * FROM tblspace1.t1 WHERE name=\'uno\'", Collections.emptyList(), true, true, false, -1);
        ScanStatement scan = translated.plan.mainStatement.unwrap(ScanStatement.class);
        assertTrue(scan.getPredicate().getIndexOperation() instanceof SecondaryIndexSeek);
        try (DataScanner scan1 = manager.scan(scan, translated.context, TransactionContext.NO_TRANSACTION)) {
            assertEquals(1, scan1.consume().size());
        }
    }
}