Examples with VDBMetaData org.teiid.adminapi.impl.VDBMetaData used on opensource projects

Example 6 with VDBMetaData

use of org.teiid.adminapi.impl.VDBMetaData in project teiid by teiid.

the class SubqueryAwareEvaluator method evaluatePushdown.

/**
 * Implements must pushdown function handling if supported by the source.
 *
 * The basic strategy is to create a dummy subquery to represent the evaluation
 */
@Override
protected Object evaluatePushdown(Function function, List<?> tuple, Object[] values) throws TeiidComponentException, TeiidProcessingException {
    final FunctionDescriptor fd = function.getFunctionDescriptor();
    if (fd.getMethod() == null) {
        throw new FunctionExecutionException(QueryPlugin.Event.TEIID30341, QueryPlugin.Util.gs(QueryPlugin.Event.TEIID30341, fd.getFullName()));
    }
    String schema = null;
    if (fd.getMethod().getParent() == null || !fd.getMethod().getParent().isPhysical()) {
        // find a suitable target
        // TODO: do better than a linear search
        VDBMetaData vdb = this.context.getVdb();
        CapabilitiesFinder capabiltiesFinder = this.context.getQueryProcessorFactory().getCapabiltiesFinder();
        for (ModelMetaData mmd : vdb.getModelMetaDatas().values()) {
            if (!mmd.isSource()) {
                continue;
            }
            SourceCapabilities caps = capabiltiesFinder.findCapabilities(mmd.getName());
            if (caps.supportsCapability(Capability.SELECT_WITHOUT_FROM) && caps.supportsFunction(fd.getMethod().getFullName())) {
                schema = mmd.getName();
                break;
            }
        }
        if (schema == null) {
            throw new FunctionExecutionException(QueryPlugin.Event.TEIID30341, QueryPlugin.Util.gs(QueryPlugin.Event.TEIID30341, fd.getFullName()));
        }
    } else {
        if (!CapabilitiesUtil.supports(Capability.SELECT_WITHOUT_FROM, fd.getMethod().getParent(), context.getMetadata(), context.getQueryProcessorFactory().getCapabiltiesFinder())) {
            if (elements != null) {
                Integer index = (Integer) elements.get(function);
                if (index != null) {
                    return tuple.get(index.intValue());
                }
            }
            throw new FunctionExecutionException(QueryPlugin.Event.TEIID30341, QueryPlugin.Util.gs(QueryPlugin.Event.TEIID30341, fd.getFullName()));
        }
        schema = fd.getSchema();
    }
    ScalarSubquery ss = null;
    if (functionState != null) {
        ss = functionState.get(function);
    }
    Expression[] functionArgs = new Expression[values.length];
    for (int i = 0; i < values.length; i++) {
        functionArgs[i] = new Constant(values[i]);
    }
    if (ss == null) {
        final Query command = new Query();
        Select select = new Select();
        command.setSelect(select);
        Function f = new Function(function.getName(), functionArgs);
        f.setType(function.getType());
        f.setFunctionDescriptor(fd);
        select.addSymbol(f);
        ss = new ScalarSubquery(command);
        SymbolMap correlatedReferences = new SymbolMap();
        Collection<ElementSymbol> elements = ElementCollectorVisitor.getElements(function, true);
        if (!elements.isEmpty()) {
            for (ElementSymbol es : elements) {
                correlatedReferences.addMapping(es, es);
            }
            command.setCorrelatedReferences(correlatedReferences);
        }
        command.setProcessorPlan(new SimpleProcessorPlan(command, schema, fd, Arrays.asList(new Constant(null, fd.getReturnType()))));
    } else {
        ((Function) ((ExpressionSymbol) ss.getCommand().getProjectedSymbols().get(0)).getExpression()).setArgs(functionArgs);
    }
    if (functionState == null) {
        this.functionState = new HashMap<Function, ScalarSubquery>(2);
    }
    functionState.put(function, ss);
    return internalEvaluate(ss, tuple);
}

Example 7 with VDBMetaData

use of org.teiid.adminapi.impl.VDBMetaData in project teiid by teiid.

the class AccessNode method openInternal.

private void openInternal() throws TeiidComponentException, TeiidProcessingException {
    // TODO: support a partitioning concept with multi-source and full dependent join pushdown
    if (subPlans != null) {
        if (this.evaluatedPlans == null) {
            this.evaluatedPlans = new HashMap<GroupSymbol, SubqueryState>();
            for (Map.Entry<GroupSymbol, RelationalPlan> entry : subPlans.entrySet()) {
                SubqueryState state = new SubqueryState();
                RelationalPlan value = entry.getValue();
                value.reset();
                state.processor = new QueryProcessor(value, getContext().clone(), getBufferManager(), getDataManager());
                state.collector = state.processor.createBatchCollector();
                this.evaluatedPlans.put(entry.getKey(), state);
            }
        }
        BlockedException be = null;
        for (SubqueryState state : evaluatedPlans.values()) {
            try {
                state.collector.collectTuples();
            } catch (BlockedException e) {
                be = e;
            }
        }
        if (be != null) {
            throw be;
        }
    }
    /*
		 * Check to see if we need a multi-source expansion.  If the connectorBindingExpression != null, then 
		 * the logic below will handle that case
		 */
    if (multiSource && connectorBindingExpression == null) {
        synchronized (this) {
            // the description can be obtained asynchly, so we need to synchronize
            VDBMetaData vdb = getContext().getVdb();
            ModelMetaData model = vdb.getModel(getModelName());
            List<String> sources = model.getSourceNames();
            // make sure that we have the right nodes
            if (this.getChildCount() != 0 && (this.sourceNames == null || !this.sourceNames.equals(sources))) {
                this.childCount--;
                this.getChildren()[0] = null;
            }
            if (this.getChildCount() == 0) {
                sourceNames = sources;
                RelationalNode node = multiSourceModify(this, connectorBindingExpression, getContext().getMetadata(), sourceNames);
                RelationalPlan.connectExternal(node, getContext(), getDataManager(), getBufferManager());
                this.addChild(node);
            }
        }
        this.getChildren()[0].open();
        return;
    }
    // Copy command and resolve references if necessary
    if (processingCommand == null) {
        processingCommand = command;
        isUpdate = RelationalNodeUtil.isUpdate(command);
    }
    boolean needProcessing = true;
    if (this.connectorBindingExpression != null && connectorBindingId == null) {
        this.connectorBindingId = (String) getEvaluator(Collections.emptyMap()).evaluate(this.connectorBindingExpression, null);
        VDBMetaData vdb = getContext().getVdb();
        ModelMetaData model = vdb.getModel(getModelName());
        List<String> sources = model.getSourceNames();
        String replacement = this.connectorBindingId;
        if (!sources.contains(this.connectorBindingId)) {
            shouldExecute = false;
            if (command instanceof StoredProcedure) {
                StoredProcedure sp = (StoredProcedure) command;
                if (sp.returnParameters() && sp.getProjectedSymbols().size() > sp.getResultSetColumns().size()) {
                    throw new TeiidProcessingException(QueryPlugin.Event.TEIID30561, QueryPlugin.Util.gs(QueryPlugin.Event.TEIID30561, command));
                }
            }
            return;
        }
        if (!(command instanceof StoredProcedure || command instanceof Insert)) {
            processingCommand = (Command) command.clone();
            MultiSourceElementReplacementVisitor.visit(replacement, getContext().getMetadata(), processingCommand);
        }
    }
    do {
        Command atomicCommand = nextCommand();
        if (shouldEvaluate) {
            needProcessing = prepareNextCommand(atomicCommand);
            nextCommand = null;
        } else {
            needProcessing = RelationalNodeUtil.shouldExecute(atomicCommand, true);
        }
        if (needProcessing) {
            registerRequest(atomicCommand);
        }
    // We use an upper limit here to the currency because these commands have potentially large in-memory value sets
    } while (!processCommandsIndividually() && hasNextCommand() && this.tupleSources.size() < Math.max(Math.min(MAX_CONCURRENT, this.getContext().getUserRequestSourceConcurrency()), this.getContext().getUserRequestSourceConcurrency() / 2));
}

Example 8 with VDBMetaData

use of org.teiid.adminapi.impl.VDBMetaData in project teiid by teiid.

the class RealMetadataFactory method createTransformationMetadata.

public static TransformationMetadata createTransformationMetadata(CompositeMetadataStore store, String vdbName, Properties vdbProperties, FunctionTree... functionModels) {
    VDBMetaData vdbMetaData = new VDBMetaData();
    // $NON-NLS-1$
    vdbMetaData.setName(vdbName);
    vdbMetaData.setVersion(1);
    if (vdbProperties != null) {
        vdbMetaData.setProperties(vdbProperties);
    }
    List<FunctionTree> udfs = new ArrayList<FunctionTree>();
    udfs.addAll(Arrays.asList(functionModels));
    for (Schema schema : store.getSchemas().values()) {
        vdbMetaData.addModel(RealMetadataFactory.createModel(schema.getName(), schema.isPhysical()));
        if (!schema.getFunctions().isEmpty()) {
            udfs.add(new FunctionTree(schema.getName(), new UDFSource(schema.getFunctions().values()), true));
        }
        if (!schema.getProcedures().isEmpty()) {
            FunctionTree ft = FunctionTree.getFunctionProcedures(schema);
            if (ft != null) {
                udfs.add(ft);
            }
        }
    }
    TransformationMetadata metadata = new TransformationMetadata(vdbMetaData, store, null, SFM.getSystemFunctions(), udfs);
    vdbMetaData.addAttchment(TransformationMetadata.class, metadata);
    vdbMetaData.addAttchment(QueryMetadataInterface.class, metadata);
    return metadata;
}

Example 9 with VDBMetaData

use of org.teiid.adminapi.impl.VDBMetaData in project teiid by teiid.

the class RealMetadataFactory method exampleMultiBindingVDB.

public static VDBMetaData exampleMultiBindingVDB() {
    VDBMetaData vdb = new VDBMetaData();
    vdb.setName("exampleMultiBinding");
    vdb.setVersion(1);
    ModelMetaData model = new ModelMetaData();
    model.setName("MultiModel");
    model.setModelType(Model.Type.PHYSICAL);
    model.setVisible(true);
    model.setSupportsMultiSourceBindings(true);
    vdb.addModel(model);
    vdb.addModel(RealMetadataFactory.createModel("Virt", false));
    return vdb;
}

Example 10 with VDBMetaData

use of org.teiid.adminapi.impl.VDBMetaData in project teiid by teiid.

the class TestSessionServiceImpl method testActiveVDBNameWithVersion.

@Test
public void testActiveVDBNameWithVersion() throws Exception {
    VDBRepository repo = Mockito.mock(VDBRepository.class);
    VDBMetaData vdb = new VDBMetaData();
    vdb.setName("name");
    vdb.setVersion(1);
    vdb.setStatus(Status.ACTIVE);
    Mockito.stub(repo.getLiveVDB("name", "1")).toReturn(vdb);
    ssi.setVDBRepository(repo);
    ssi.getActiveVDB("name", "1");
    Mockito.verify(repo, Mockito.times(1)).getLiveVDB("name", "1");
}