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

Example 1 with Predicate

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

the class SQLPlanner method buildSelectStatement.

private ExecutionPlan buildSelectStatement(String defaultTableSpace, Select s, boolean scan, int maxRows) throws StatementExecutionException {
    PlainSelect selectBody = (PlainSelect) s.getSelectBody();
    net.sf.jsqlparser.schema.Table fromTable = (net.sf.jsqlparser.schema.Table) selectBody.getFromItem();
    TableRef mainTable = TableRef.buildFrom(fromTable, defaultTableSpace);
    String mainTableAlias = mainTable.tableAlias;
    String tableSpace = mainTable.tableSpace;
    TableSpaceManager tableSpaceManager = manager.getTableSpaceManager(tableSpace);
    if (tableSpaceManager == null) {
        throw new TableSpaceDoesNotExistException("no such tablespace " + tableSpace + " here at " + manager.getNodeId());
    }
    AbstractTableManager tableManager = tableSpaceManager.getTableManager(mainTable.tableName);
    if (tableManager == null) {
        throw new TableDoesNotExistException("no such table " + mainTable.tableName + " in tablespace " + tableSpace);
    }
    // linked hash map retains the order of insertions
    LinkedHashMap<String, JoinSupport> joins = new LinkedHashMap<>();
    boolean joinPresent = false;
    joins.put(mainTable.tableAlias, new JoinSupport(mainTable, tableManager));
    if (selectBody.getJoins() != null) {
        for (Join join : selectBody.getJoins()) {
            joinPresent = true;
            if (join.isLeft() || join.isCross() || join.isRight() || join.isOuter() || join.isSimple()) {
                throw new StatementExecutionException("unsupported JOIN type: " + join);
            }
            net.sf.jsqlparser.schema.Table joinedTable = (net.sf.jsqlparser.schema.Table) join.getRightItem();
            TableRef joinedTableRef = TableRef.buildFrom(joinedTable, defaultTableSpace);
            if (!joinedTableRef.tableSpace.equalsIgnoreCase(mainTable.tableSpace)) {
                throw new TableDoesNotExistException("unsupported cross-tablespace JOIN " + "between" + mainTable.tableSpace + "." + mainTable.tableName + " and " + joinedTableRef.tableSpace + "." + joinedTableRef.tableName);
            }
            AbstractTableManager joinedTableManager = tableSpaceManager.getTableManager(joinedTableRef.tableName);
            if (joinedTableManager == null) {
                throw new TableDoesNotExistException("no such table " + joinedTableRef.tableName + " in tablespace " + tableSpace);
            }
            JoinSupport joinSupport = new JoinSupport(joinedTableRef, joinedTableManager);
            joins.put(joinedTableRef.tableAlias, joinSupport);
        }
    }
    Projection mainTableProjection;
    Table table = tableManager.getTable();
    boolean allColumns = false;
    boolean containsAggregateFunctions = false;
    for (SelectItem c : selectBody.getSelectItems()) {
        if (c instanceof AllColumns) {
            allColumns = true;
            break;
        } else if (c instanceof AllTableColumns) {
            AllTableColumns allTableColumns = (AllTableColumns) c;
            TableRef ref = TableRef.buildFrom(allTableColumns.getTable(), defaultTableSpace);
            if (!joinPresent && ref.tableAlias.equals(mainTable.tableAlias)) {
                // select a.*  FROM table a
                allColumns = true;
            } else {
                // select a.*, b.* FROM table a JOIN table b
                joins.get(ref.tableAlias).allColumns = true;
            }
        } else if (c instanceof SelectExpressionItem) {
            SelectExpressionItem se = (SelectExpressionItem) c;
            if (isAggregateFunction(se.getExpression())) {
                containsAggregateFunctions = true;
            }
            if (!joinPresent) {
                joins.get(mainTable.tableAlias).selectItems.add(c);
            } else {
                ColumnReferencesDiscovery discoverMainTableAlias = discoverMainTableAlias(se.getExpression());
                String mainTableAliasForItem = discoverMainTableAlias.getMainTableAlias();
                if (discoverMainTableAlias.isContainsMixedAliases()) {
                    throw new StatementExecutionException("unsupported single SELECT ITEM with mixed aliases: " + c);
                }
                if (mainTableAliasForItem == null) {
                    mainTableAliasForItem = mainTable.tableAlias;
                }
                joins.get(mainTableAliasForItem).selectItems.add(c);
            }
        } else {
            throw new StatementExecutionException("unsupported SELECT ITEM type: " + c);
        }
    }
    if (allColumns) {
        mainTableProjection = Projection.IDENTITY(table.columnNames, table.columns);
        for (Map.Entry<String, JoinSupport> join : joins.entrySet()) {
            JoinSupport support = join.getValue();
            support.projection = Projection.IDENTITY(support.table.columnNames, support.table.columns);
            support.allColumns = true;
        }
    } else {
        if (!joinPresent) {
            mainTableProjection = new SQLProjection(table, mainTableAlias, selectBody.getSelectItems());
        } else {
            for (JoinSupport support : joins.values()) {
                if (support.allColumns) {
                    support.projection = Projection.IDENTITY(support.table.columnNames, support.table.columns);
                } else {
                    support.projection = new SQLProjection(support.table, support.tableRef.tableAlias, support.selectItems);
                }
            }
            mainTableProjection = joins.get(mainTableAlias).projection;
        }
    }
    if (scan) {
        if (!joinPresent) {
            SQLRecordPredicate where = selectBody.getWhere() != null ? new SQLRecordPredicate(table, mainTableAlias, selectBody.getWhere()) : null;
            if (where != null) {
                discoverIndexOperations(selectBody.getWhere(), table, mainTableAlias, where, tableSpaceManager);
            }
            Aggregator aggregator = null;
            ScanLimitsImpl scanLimits = null;
            if (containsAggregateFunctions || (selectBody.getGroupByColumnReferences() != null && !selectBody.getGroupByColumnReferences().isEmpty())) {
                aggregator = new SQLAggregator(selectBody.getSelectItems(), selectBody.getGroupByColumnReferences(), manager.getRecordSetFactory());
            }
            TupleComparator comparatorOnScan = null;
            TupleComparator comparatorOnPlan = null;
            if (selectBody.getOrderByElements() != null && !selectBody.getOrderByElements().isEmpty()) {
                if (aggregator != null) {
                    comparatorOnPlan = SingleColumnSQLTupleComparator.make(mainTableAlias, selectBody.getOrderByElements(), null);
                } else {
                    comparatorOnScan = SingleColumnSQLTupleComparator.make(mainTableAlias, selectBody.getOrderByElements(), table.primaryKey);
                }
            }
            Limit limit = selectBody.getLimit();
            Top top = selectBody.getTop();
            if (limit != null && top != null) {
                throw new StatementExecutionException("LIMIT and TOP cannot be used on the same query");
            }
            if (limit != null) {
                if (limit.isLimitAll() || limit.isLimitNull() || limit.getOffset() instanceof JdbcParameter) {
                    throw new StatementExecutionException("Invalid LIMIT clause (limit=" + limit + ")");
                }
                if (maxRows > 0 && limit.getRowCount() instanceof JdbcParameter) {
                    throw new StatementExecutionException("Invalid LIMIT clause (limit=" + limit + ") and JDBC setMaxRows=" + maxRows);
                }
                int rowCount;
                int rowCountJdbcParameter = -1;
                if (limit.getRowCount() instanceof JdbcParameter) {
                    rowCount = -1;
                    rowCountJdbcParameter = ((JdbcParameter) limit.getRowCount()).getIndex() - 1;
                } else {
                    rowCount = ((Number) resolveValue(limit.getRowCount(), false)).intValue();
                }
                int offset = limit.getOffset() != null ? ((Number) resolveValue(limit.getOffset(), false)).intValue() : 0;
                scanLimits = new ScanLimitsImpl(rowCount, offset, rowCountJdbcParameter + 1);
            } else if (top != null) {
                if (top.isPercentage() || top.getExpression() == null) {
                    throw new StatementExecutionException("Invalid TOP clause (top=" + top + ")");
                }
                try {
                    int rowCount = Integer.parseInt(resolveValue(top.getExpression(), false) + "");
                    scanLimits = new ScanLimitsImpl(rowCount, 0);
                } catch (NumberFormatException error) {
                    throw new StatementExecutionException("Invalid TOP clause: " + error, error);
                }
            }
            if (maxRows > 0) {
                if (scanLimits == null) {
                    scanLimits = new ScanLimitsImpl(maxRows, 0);
                } else if (scanLimits.getMaxRows() <= 0 || scanLimits.getMaxRows() > maxRows) {
                    scanLimits = new ScanLimitsImpl(maxRows, scanLimits.getOffset());
                }
            }
            ScanLimitsImpl limitsOnScan = null;
            ScanLimitsImpl limitsOnPlan = null;
            if (aggregator != null) {
                limitsOnPlan = scanLimits;
            } else {
                limitsOnScan = scanLimits;
            }
            try {
                ScanStatement statement = new ScanStatement(tableSpace, mainTable.tableName, mainTableProjection, where, comparatorOnScan, limitsOnScan);
                return ExecutionPlan.make(statement, aggregator, limitsOnPlan, comparatorOnPlan);
            } catch (IllegalArgumentException err) {
                throw new StatementExecutionException(err);
            }
        } else {
            if (containsAggregateFunctions || (selectBody.getGroupByColumnReferences() != null && !selectBody.getGroupByColumnReferences().isEmpty())) {
                throw new StatementExecutionException("AGGREGATEs are not yet supported with JOIN");
            }
            Limit limit = selectBody.getLimit();
            Top top = selectBody.getTop();
            if (limit != null && top != null) {
                throw new StatementExecutionException("LIMIT and TOP cannot be used on the same query");
            }
            ScanLimitsImpl scanLimits = null;
            if (limit != null) {
                if (limit.isLimitAll() || limit.isLimitNull() || limit.getOffset() instanceof JdbcParameter) {
                    throw new StatementExecutionException("Invalid LIMIT clause (limit=" + limit + ")");
                }
                if (maxRows > 0 && limit.getRowCount() instanceof JdbcParameter) {
                    throw new StatementExecutionException("Invalid LIMIT clause (limit=" + limit + ") and JDBC setMaxRows=" + maxRows);
                }
                int rowCount;
                int rowCountJdbcParameter = -1;
                if (limit.getRowCount() instanceof JdbcParameter) {
                    rowCount = -1;
                    rowCountJdbcParameter = ((JdbcParameter) limit.getRowCount()).getIndex() - 1;
                } else {
                    rowCount = ((Number) resolveValue(limit.getRowCount(), false)).intValue();
                }
                int offset = limit.getOffset() != null ? ((Number) resolveValue(limit.getOffset(), false)).intValue() : 0;
                scanLimits = new ScanLimitsImpl(rowCount, offset, rowCountJdbcParameter + 1);
            } else if (top != null) {
                if (top.isPercentage() || top.getExpression() == null) {
                    throw new StatementExecutionException("Invalid TOP clause");
                }
                try {
                    int rowCount = Integer.parseInt(resolveValue(top.getExpression(), false) + "");
                    scanLimits = new ScanLimitsImpl(rowCount, 0);
                } catch (NumberFormatException error) {
                    throw new StatementExecutionException("Invalid TOP clause: " + error, error);
                }
            }
            if (maxRows > 0) {
                if (scanLimits == null) {
                    scanLimits = new ScanLimitsImpl(maxRows, 0);
                } else if (scanLimits.getMaxRows() <= 0 || scanLimits.getMaxRows() > maxRows) {
                    scanLimits = new ScanLimitsImpl(maxRows, scanLimits.getOffset());
                }
            }
            List<ColumnReferencesDiscovery> conditionsOnJoinedResult = new ArrayList<>();
            List<ScanStatement> scans = new ArrayList<>();
            for (Map.Entry<String, JoinSupport> join : joins.entrySet()) {
                String alias = join.getKey();
                JoinSupport joinSupport = join.getValue();
                Expression collectedConditionsForAlias = collectConditionsForAlias(alias, selectBody.getWhere(), conditionsOnJoinedResult, mainTableAlias);
                LOG.severe("Collected WHERE for alias " + alias + ": " + collectedConditionsForAlias);
                if (collectedConditionsForAlias == null) {
                    joinSupport.predicate = null;
                } else {
                    joinSupport.predicate = new SQLRecordPredicate(join.getValue().table, alias, collectedConditionsForAlias);
                }
            }
            for (Join join : selectBody.getJoins()) {
                if (join.getOnExpression() != null) {
                    ColumnReferencesDiscovery discoverMainTableAliasForJoinCondition = discoverMainTableAlias(join.getOnExpression());
                    conditionsOnJoinedResult.add(discoverMainTableAliasForJoinCondition);
                    LOG.severe("Collected ON-condition on final JOIN result: " + join.getOnExpression());
                }
            }
            for (ColumnReferencesDiscovery e : conditionsOnJoinedResult) {
                LOG.severe("Collected WHERE on final JOIN result: " + e.getExpression());
                for (Map.Entry<String, List<net.sf.jsqlparser.schema.Column>> entry : e.getColumnsByTable().entrySet()) {
                    String tableAlias = entry.getKey();
                    List<net.sf.jsqlparser.schema.Column> filteredColumnsOnJoin = entry.getValue();
                    LOG.severe("for  TABLE " + tableAlias + " we need to load " + filteredColumnsOnJoin);
                    JoinSupport support = joins.get(tableAlias);
                    if (support == null) {
                        throw new StatementExecutionException("invalid table alias " + tableAlias);
                    }
                    if (!support.allColumns) {
                        for (net.sf.jsqlparser.schema.Column c : filteredColumnsOnJoin) {
                            support.selectItems.add(new SelectExpressionItem(c));
                        }
                        support.projection = new SQLProjection(support.table, support.tableRef.tableAlias, support.selectItems);
                    }
                }
            }
            Map<String, Table> tables = new HashMap<>();
            for (Map.Entry<String, JoinSupport> join : joins.entrySet()) {
                JoinSupport joinSupport = join.getValue();
                tables.put(join.getKey(), joinSupport.table);
                ScanStatement statement = new ScanStatement(tableSpace, joinSupport.table.name, joinSupport.projection, joinSupport.predicate, null, null);
                scans.add(statement);
            }
            TuplePredicate joinFilter = null;
            if (!conditionsOnJoinedResult.isEmpty()) {
                joinFilter = new SQLRecordPredicate(null, null, composeAndExpression(conditionsOnJoinedResult));
            }
            Projection joinProjection = null;
            if (!allColumns) {
                joinProjection = new SQLProjection(tableSpace, tables, selectBody.getSelectItems());
            }
            TupleComparator comparatorOnPlan = null;
            if (selectBody.getOrderByElements() != null && !selectBody.getOrderByElements().isEmpty()) {
                comparatorOnPlan = SingleColumnSQLTupleComparator.make(mainTableAlias, selectBody.getOrderByElements(), null);
            }
            try {
                return ExecutionPlan.joinedScan(scans, joinFilter, joinProjection, scanLimits, comparatorOnPlan);
            } catch (IllegalArgumentException err) {
                throw new StatementExecutionException(err);
            }
        }
    } else {
        if (selectBody.getWhere() == null) {
            throw new StatementExecutionException("unsupported GET without WHERE");
        }
        if (joinPresent) {
            throw new StatementExecutionException("unsupported GET with JOIN");
        }
        // SELECT * FROM WHERE KEY=? AND ....
        SQLRecordKeyFunction keyFunction = findPrimaryKeyIndexSeek(selectBody.getWhere(), table, mainTableAlias);
        if (keyFunction == null || !keyFunction.isFullPrimaryKey()) {
            throw new StatementExecutionException("unsupported GET not on PK, bad where clause: " + selectBody.getWhere() + " (" + selectBody.getWhere().getClass() + ")");
        }
        Predicate where = buildSimplePredicate(selectBody.getWhere(), table, mainTableAlias);
        try {
            return ExecutionPlan.simple(new GetStatement(tableSpace, mainTable.tableName, keyFunction, where, false));
        } catch (IllegalArgumentException err) {
            throw new StatementExecutionException(err);
        }
    }
}

Example 2 with Predicate

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

the class CalcitePlanner method planUpdate.

private PlannerOp planUpdate(EnumerableTableModify dml, boolean returnValues) {
    PlannerOp input = convertRelNode(dml.getInput(), null, false);
    List<String> updateColumnList = dml.getUpdateColumnList();
    List<RexNode> sourceExpressionList = dml.getSourceExpressionList();
    final String tableSpace = dml.getTable().getQualifiedName().get(0);
    final String tableName = dml.getTable().getQualifiedName().get(1);
    final TableImpl tableImpl = (TableImpl) dml.getTable().unwrap(org.apache.calcite.schema.Table.class);
    Table table = tableImpl.tableManager.getTable();
    List<CompiledSQLExpression> expressions = new ArrayList<>(sourceExpressionList.size());
    for (RexNode node : sourceExpressionList) {
        CompiledSQLExpression exp = SQLExpressionCompiler.compileExpression(node);
        expressions.add(exp);
    }
    RecordFunction function = new SQLRecordFunction(updateColumnList, table, expressions);
    UpdateStatement update = null;
    if (input instanceof TableScanOp) {
        update = new UpdateStatement(tableSpace, tableName, null, function, null);
    } else if (input instanceof FilterOp) {
        FilterOp filter = (FilterOp) input;
        if (filter.getInput() instanceof TableScanOp) {
            SQLRecordPredicate pred = new SQLRecordPredicate(table, null, filter.getCondition());
            update = new UpdateStatement(tableSpace, tableName, null, function, pred);
        }
    } else if (input instanceof ProjectOp) {
        ProjectOp proj = (ProjectOp) input;
        if (proj.getInput() instanceof TableScanOp) {
            update = new UpdateStatement(tableSpace, tableName, null, function, null);
        } else if (proj.getInput() instanceof FilterOp) {
            FilterOp filter = (FilterOp) proj.getInput();
            if (filter.getInput() instanceof TableScanOp) {
                SQLRecordPredicate pred = new SQLRecordPredicate(table, null, filter.getCondition());
                update = new UpdateStatement(tableSpace, tableName, null, function, pred);
            }
        } else if (proj.getInput() instanceof FilteredTableScanOp) {
            FilteredTableScanOp filter = (FilteredTableScanOp) proj.getInput();
            Predicate pred = filter.getPredicate();
            update = new UpdateStatement(tableSpace, tableName, null, function, pred);
        } else if (proj.getInput() instanceof BindableTableScanOp) {
            BindableTableScanOp filter = (BindableTableScanOp) proj.getInput();
            ScanStatement scan = filter.getStatement();
            if (scan.getComparator() == null && scan.getLimits() == null && scan.getTableDef() != null) {
                Predicate pred = scan.getPredicate();
                update = new UpdateStatement(tableSpace, tableName, null, function, pred);
            }
        }
    }
    if (update != null) {
        return new SimpleUpdateOp(update.setReturnValues(returnValues));
    } else {
        return new UpdateOp(tableSpace, tableName, input, returnValues, function);
    }
}

Example 3 with Predicate

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

the class CalcitePlanner method planDelete.

private PlannerOp planDelete(EnumerableTableModify dml) {
    PlannerOp input = convertRelNode(dml.getInput(), null, false);
    final String tableSpace = dml.getTable().getQualifiedName().get(0);
    final String tableName = dml.getTable().getQualifiedName().get(1);
    final TableImpl tableImpl = (TableImpl) dml.getTable().unwrap(org.apache.calcite.schema.Table.class);
    Table table = tableImpl.tableManager.getTable();
    DeleteStatement delete = null;
    if (input instanceof TableScanOp) {
        delete = new DeleteStatement(tableSpace, tableName, null, null);
    } else if (input instanceof FilterOp) {
        FilterOp filter = (FilterOp) input;
        if (filter.getInput() instanceof TableScanOp) {
            SQLRecordPredicate pred = new SQLRecordPredicate(table, null, filter.getCondition());
            delete = new DeleteStatement(tableSpace, tableName, null, pred);
        }
    } else if (input instanceof BindableTableScanOp) {
        BindableTableScanOp filter = (BindableTableScanOp) input;
        Predicate pred = filter.getStatement().getPredicate();
        delete = new DeleteStatement(tableSpace, tableName, null, pred);
    }
    if (delete != null) {
        return new SimpleDeleteOp(delete);
    } else {
        return new DeleteOp(tableSpace, tableName, input);
    }
}

Example 4 with Predicate

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

the class ScanDuringCheckPointTest method bigTableScan.

@Test
public // @Ignore
void bigTableScan() throws Exception {
    int testSize = 10000;
    String nodeId = "localhost";
    try (DBManager manager = new DBManager("localhost", new MemoryMetadataStorageManager(), new MemoryDataStorageManager(), new MemoryCommitLogManager(), null, null)) {
        // manager.setMaxLogicalPageSize(10);
        // manager.setMaxPagesUsedMemory(Long.MAX_VALUE);
        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);
        String tableSpaceUUID = manager.getTableSpaceManager("tblspace1").getTableSpaceUUID();
        Table table = Table.builder().tablespace("tblspace1").name("t1").column("id", ColumnTypes.STRING).column("name", ColumnTypes.STRING).primaryKey("id").build();
        CreateTableStatement st2 = new CreateTableStatement(table);
        manager.executeStatement(st2, StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), TransactionContext.NO_TRANSACTION);
        for (int i = 0; i < testSize / 2; i++) {
            InsertStatement insert = new InsertStatement(table.tablespace, table.name, RecordSerializer.makeRecord(table, "id", "k" + i, "name", RandomString.getInstance().nextString(50, new StringBuilder().append("testname").append(i).append("_")).toString()));
            assertEquals(1, manager.executeUpdate(insert, StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), TransactionContext.NO_TRANSACTION).getUpdateCount());
        }
        manager.checkpoint();
        for (int i = testSize / 2; i < testSize; i++) {
            InsertStatement insert = new InsertStatement(table.tablespace, table.name, RecordSerializer.makeRecord(table, "id", "k" + i, "name", RandomString.getInstance().nextString(50, new StringBuilder().append("testname").append(i).append("_")).toString()));
            assertEquals(1, manager.executeUpdate(insert, StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), TransactionContext.NO_TRANSACTION).getUpdateCount());
        }
        manager.checkpoint();
        assertTrue(manager.getDataStorageManager().getActualNumberOfPages(tableSpaceUUID, table.uuid) > 1);
        TableManagerStats stats = manager.getTableSpaceManager(table.tablespace).getTableManager(table.name).getStats();
        assertEquals(testSize, stats.getTablesize());
        assertTrue(testSize > 100);
        ExecutorService service = Executors.newFixedThreadPool(1);
        Runnable checkPointPerformer = new Runnable() {

            @Override
            public void run() {
                CountDownLatch checkpointDone = new CountDownLatch(1);
                Thread fakeCheckpointThread = new Thread(new Runnable() {

                    @Override
                    public void run() {
                        try {
                            manager.checkpoint();
                        } catch (Throwable t) {
                            t.printStackTrace();
                            fail();
                        }
                        checkpointDone.countDown();
                    }
                });
                fakeCheckpointThread.setDaemon(true);
                try {
                    fakeCheckpointThread.start();
                    checkpointDone.await();
                    fakeCheckpointThread.join();
                } catch (InterruptedException err) {
                    throw new RuntimeException(err);
                }
            }
        };
        AtomicInteger done = new AtomicInteger();
        Predicate slowPredicate = new Predicate() {

            int count = 0;

            @Override
            public boolean evaluate(Record record, StatementEvaluationContext context) throws StatementExecutionException {
                if (count++ % 10 == 0) {
                    // checkpoint will flush buffers, in the middle of the scan
                    try {
                        System.out.println("GO checkpoint !");
                        service.submit(checkPointPerformer).get();
                        done.incrementAndGet();
                    } catch (ExecutionException | InterruptedException err) {
                        throw new StatementExecutionException(err);
                    }
                }
                return true;
            }
        };
        try (DataScanner scan = manager.scan(new ScanStatement(table.tablespace, table, slowPredicate), StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), TransactionContext.NO_TRANSACTION)) {
            AtomicInteger count = new AtomicInteger();
            scan.forEach(tuple -> {
                count.incrementAndGet();
            });
            assertEquals(testSize, count.get());
        }
        assertEquals(testSize, stats.getTablesize());
        assertEquals(testSize / 10, done.get());
    }
}

Example 5 with Predicate

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

the class ScanTest method testTransaction.

@Test
public void testTransaction() throws Exception {
    for (int i = 0; i < 5; i++) {
        Map<String, Object> data = new HashMap<>();
        data.put("id", "key_" + i);
        data.put("number", i);
        Record record = RecordSerializer.toRecord(data, table);
        InsertStatement st = new InsertStatement(tableSpace, tableName, record);
        assertEquals(1, manager.executeUpdate(st, StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), TransactionContext.NO_TRANSACTION).getUpdateCount());
    }
    BeginTransactionStatement begin = new BeginTransactionStatement(tableSpace);
    long tx = ((TransactionResult) manager.executeStatement(begin, StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), TransactionContext.NO_TRANSACTION)).getTransactionId();
    for (int i = 5; i < 10; i++) {
        Map<String, Object> data = new HashMap<>();
        data.put("id", "key_" + i);
        data.put("number", i);
        Record record = RecordSerializer.toRecord(data, table);
        InsertStatement st = new InsertStatement(tableSpace, tableName, record);
        assertEquals(1, manager.executeUpdate(st, StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), new TransactionContext(tx)).getUpdateCount());
    }
    {
        ScanStatement scan = new ScanStatement(tableSpace, table, new Predicate() {

            @Override
            public boolean evaluate(Record record, StatementEvaluationContext context) throws StatementExecutionException {
                return true;
            }
        });
        DataScanner scanner = manager.scan(scan, StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), new TransactionContext(tx));
        List<?> result = scanner.consume();
        assertEquals(10, result.size());
    }
    for (int i = 0; i < 10; i++) {
        DeleteStatement st = new DeleteStatement(tableSpace, tableName, Bytes.from_string("key_" + i), null);
        assertEquals(1, manager.executeUpdate(st, StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), new TransactionContext(tx)).getUpdateCount());
    }
    {
        ScanStatement scan = new ScanStatement(tableSpace, table, new Predicate() {

            @Override
            public boolean evaluate(Record record, StatementEvaluationContext context) throws StatementExecutionException {
                return true;
            }
        });
        DataScanner scanner = manager.scan(scan, StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), new TransactionContext(tx));
        List<?> result = scanner.consume();
        assertEquals(0, result.size());
    }
}