Examples with RelationalPlan org.teiid.query.processor.relational.RelationalPlan used on opensource projects

Example 26 with RelationalPlan

use of org.teiid.query.processor.relational.RelationalPlan in project teiid by teiid.

the class CriteriaCapabilityValidatorVisitor method getAccessNode.

public static AccessNode getAccessNode(ProcessorPlan plan) {
    if (!(plan instanceof RelationalPlan)) {
        return null;
    }
    RelationalPlan rplan = (RelationalPlan) plan;
    // Check that the plan is just an access node
    RelationalNode accessNode = rplan.getRootNode();
    if (accessNode instanceof LimitNode) {
        LimitNode ln = (LimitNode) accessNode;
        if (!ln.isImplicit()) {
            return null;
        }
        accessNode = ln.getChildren()[0];
    }
    if (!(accessNode instanceof AccessNode)) {
        return null;
    }
    return (AccessNode) accessNode;
}

Example 27 with RelationalPlan

use of org.teiid.query.processor.relational.RelationalPlan in project teiid by teiid.

the class BatchedUpdatePlanner method optimize.

/**
 * Optimizes batched updates by batching all contiguous commands that relate to the same physical model.
 * For example, for the following batch of commands:
 * <br/>
 * <ol>
 *      <li>1.  INSERT INTO physicalModel.myPhysical ...</li>
 *      <li>2.  UPDATE physicalModel.myPhysical ... </li>
 *      <li>3.  DELETE FROM virtualmodel.myVirtual ... </li>
 *      <li>4.  UPDATE virtualmodel.myVirtual ... </li>
 *      <li>5.  UPDATE physicalModel.myOtherPhysical ...</li>
 *      <li>6.  INSERT INTO physicalModel.myOtherPhysical ... <li>
 *      <li>7.  DELETE FROM physicalModel.myOtherPhysical ...</li>
 *      <li>8.  INSERT INTO physicalModel.myPhysical ... </li>
 *      <li>9.  INSERT INTO physicalModel.myPhysical ... </li>
 *      <li>10. INSERT INTO physicalModel.myPhysical ... </li>
 *      <li>11. INSERT INTO physicalModel.myPhysical ... </li>
 *      <li>12. INSERT INTO physicalModel.myPhysical ... </li>
 * </ol>
 * <br/> this implementation will batch as follows: (1,2), (5, 6, 7), (8 thru 12).
 * The remaining commands/plans will be executed individually.
 * @see org.teiid.query.optimizer.CommandPlanner#optimize(Command, org.teiid.core.id.IDGenerator, org.teiid.query.metadata.QueryMetadataInterface, org.teiid.query.optimizer.capabilities.CapabilitiesFinder, org.teiid.query.analysis.AnalysisRecord, CommandContext)
 * @since 4.2
 */
public ProcessorPlan optimize(Command command, IDGenerator idGenerator, QueryMetadataInterface metadata, CapabilitiesFinder capFinder, AnalysisRecord analysisRecord, CommandContext context) throws QueryPlannerException, QueryMetadataException, TeiidComponentException {
    BatchedUpdateCommand batchedUpdateCommand = (BatchedUpdateCommand) command;
    List<ProcessorPlan> childPlans = new ArrayList<ProcessorPlan>(batchedUpdateCommand.getUpdateCommands().size());
    List<Command> updateCommands = batchedUpdateCommand.getUpdateCommands();
    int numCommands = updateCommands.size();
    List<VariableContext> allContexts = batchedUpdateCommand.getVariableContexts();
    List<VariableContext> planContexts = null;
    if (allContexts != null) {
        planContexts = new ArrayList<VariableContext>(allContexts.size());
    }
    for (int commandIndex = 0; commandIndex < numCommands; commandIndex++) {
        // Potentially the first command of a batch
        Command updateCommand = updateCommands.get(commandIndex);
        boolean commandWasBatched = false;
        // If this command can be placed in a batch
        if (isEligibleForBatching(updateCommand, metadata)) {
            // Get the model ID. Subsequent and contiguous commands that update a group in this model are candidates for this batch
            Object batchModelID = metadata.getModelID(getUpdatedGroup(updateCommand).getMetadataID());
            String modelName = metadata.getFullName(batchModelID);
            SourceCapabilities caps = capFinder.findCapabilities(modelName);
            // Only attempt batching if the source supports batching
            if (caps.supportsCapability(Capability.BATCHED_UPDATES)) {
                // Start a new batch
                List<Command> batch = new ArrayList<Command>();
                List<VariableContext> contexts = new ArrayList<VariableContext>();
                List<Boolean> shouldEvaluate = new ArrayList<Boolean>();
                // This is the first command in a potential batch, so add it to the batch
                batch.add(updateCommand);
                if (allContexts != null) {
                    contexts.add(allContexts.get(commandIndex));
                    shouldEvaluate.add(Boolean.TRUE);
                } else {
                    shouldEvaluate.add(EvaluatableVisitor.needsProcessingEvaluation(updateCommand));
                }
                // immediately and contiguously after this one
                batchLoop: for (int batchIndex = commandIndex + 1; batchIndex < numCommands; batchIndex++) {
                    Command batchingCandidate = updateCommands.get(batchIndex);
                    // If this command updates the same model, and is eligible for batching, add it to the batch
                    if (canBeAddedToBatch(batchingCandidate, batchModelID, metadata, capFinder)) {
                        batch.add(batchingCandidate);
                        if (allContexts != null) {
                            contexts.add(allContexts.get(batchIndex));
                            shouldEvaluate.add(Boolean.TRUE);
                        } else {
                            shouldEvaluate.add(EvaluatableVisitor.needsProcessingEvaluation(batchingCandidate));
                        }
                    } else {
                        // Otherwise, stop batching at this point. The next command may well be the start of a new batch
                        break batchLoop;
                    }
                }
                // If two or more contiguous commands made on the same model were found, then batch them
                if (batch.size() > 1) {
                    ProjectNode projectNode = new ProjectNode(idGenerator.nextInt());
                    // Create a BatchedUpdateNode that creates a batched request for the connector
                    BatchedUpdateNode batchNode = new BatchedUpdateNode(idGenerator.nextInt(), batch, contexts, shouldEvaluate, modelName);
                    List symbols = batchedUpdateCommand.getProjectedSymbols();
                    projectNode.setSelectSymbols(symbols);
                    projectNode.setElements(symbols);
                    batchNode.setElements(symbols);
                    projectNode.addChild(batchNode);
                    // Add a new RelationalPlan that represents the plan for this batch.
                    childPlans.add(new RelationalPlan(projectNode));
                    if (planContexts != null) {
                        planContexts.add(new VariableContext());
                    }
                    // Skip those commands that were added to this batch
                    commandIndex += batch.size() - 1;
                    commandWasBatched = true;
                }
            }
        }
        if (!commandWasBatched) {
            // If the command wasn't batched, just add the plan for this command to the list of plans
            Command cmd = batchedUpdateCommand.getUpdateCommands().get(commandIndex);
            ProcessorPlan plan = cmd.getProcessorPlan();
            if (plan == null) {
                plan = QueryOptimizer.optimizePlan(cmd, metadata, idGenerator, capFinder, analysisRecord, context);
            }
            childPlans.add(plan);
            if (allContexts != null) {
                planContexts.add(allContexts.get(commandIndex));
            }
        }
    }
    return new BatchedUpdatePlan(childPlans, batchedUpdateCommand.getUpdateCommands().size(), planContexts, batchedUpdateCommand.isSingleResult());
}

Example 28 with RelationalPlan

use of org.teiid.query.processor.relational.RelationalPlan in project teiid by teiid.

the class TestConformedTables method testConformedJoin.

@Test
public void testConformedJoin() throws Exception {
    String sql = "select pm1.g1.e1 from pm1.g1, pm2.g2 where g1.e1=g2.e1";
    RelationalPlan plan = (RelationalPlan) helpPlan(sql, tm, new String[] { "SELECT g_0.e1 FROM pm1.g1 AS g_0, pm2.g2 AS g_1 WHERE g_0.e1 = g_1.e1" }, ComparisonMode.EXACT_COMMAND_STRING);
    AccessNode anode = (AccessNode) plan.getRootNode();
    assertEquals("pm2", anode.getModelName());
    // it should work either way
    sql = "select pm1.g1.e1 from pm2.g2, pm1.g1 where g1.e1=g2.e1";
    plan = (RelationalPlan) helpPlan(sql, tm, new String[] { "SELECT g_1.e1 FROM pm2.g2 AS g_0, pm1.g1 AS g_1 WHERE g_1.e1 = g_0.e1" }, ComparisonMode.EXACT_COMMAND_STRING);
    anode = (AccessNode) plan.getRootNode();
    assertEquals("pm2", anode.getModelName());
}

Example 29 with RelationalPlan

use of org.teiid.query.processor.relational.RelationalPlan in project teiid by teiid.

the class TestSortOptimization method testProjectionRaisingWithAccess1.

@Test
public void testProjectionRaisingWithAccess1() throws Exception {
    // Create query
    // $NON-NLS-1$
    String sql = "select e1, 1 as z from pm1.g1 as x group by e1 order by e1";
    BasicSourceCapabilities caps = TestOptimizer.getTypicalCapabilities();
    caps.setCapabilitySupport(Capability.QUERY_GROUP_BY, true);
    caps.setCapabilitySupport(Capability.QUERY_SELECT_EXPRESSION, false);
    RelationalPlan plan = (RelationalPlan) helpPlan(sql, RealMetadataFactory.example1Cached(), null, new DefaultCapabilitiesFinder(caps), new String[] { "SELECT g_0.e1 FROM pm1.g1 AS g_0 GROUP BY g_0.e1 ORDER BY g_0.e1" }, // $NON-NLS-1$
    ComparisonMode.EXACT_COMMAND_STRING);
    assertTrue(plan.getRootNode() instanceof ProjectNode);
}

Example 30 with RelationalPlan

use of org.teiid.query.processor.relational.RelationalPlan in project teiid by teiid.

the class TestSortOptimization method testProjectionRaisingWithLimit.

@Test
public void testProjectionRaisingWithLimit() {
    // Create query
    // $NON-NLS-1$
    String sql = "select e1, (select e1 from pm2.g1 where e2 = x.e2) from pm1.g1 as x order by e1 limit 2";
    RelationalPlan plan = (RelationalPlan) helpPlan(sql, RealMetadataFactory.example1Cached(), null, new DefaultCapabilitiesFinder(), new String[] { "SELECT pm1.g1.e1, pm1.g1.e2 FROM pm1.g1" }, // $NON-NLS-1$
    TestOptimizer.SHOULD_SUCCEED);
    assertTrue(plan.getRootNode() instanceof ProjectNode);
}