Examples with Attribute org.wso2.siddhi.query.api.definition.Attribute used on opensource projects

Example 21 with Attribute

use of org.wso2.siddhi.query.api.definition.Attribute in project siddhi by wso2.

the class SelectorParser method getAttributeProcessors.

/**
 * Method to construct AttributeProcessor list for the selector.
 *
 * @param selector                    Selector
 * @param id                          stream id
 * @param siddhiAppContext            siddhi app context
 * @param metaComplexEvent            meta ComplexEvent
 * @param tableMap                    Table Map
 * @param variableExpressionExecutors list of VariableExpressionExecutors
 * @param outputStream
 * @return list of AttributeProcessors
 */
private static List<AttributeProcessor> getAttributeProcessors(Selector selector, String id, SiddhiAppContext siddhiAppContext, MetaComplexEvent metaComplexEvent, Map<String, Table> tableMap, List<VariableExpressionExecutor> variableExpressionExecutors, OutputStream outputStream, String queryName, int metaPosition) {
    List<AttributeProcessor> attributeProcessorList = new ArrayList<>();
    StreamDefinition outputDefinition = StreamDefinition.id(id);
    outputDefinition.setQueryContextStartIndex(outputStream.getQueryContextStartIndex());
    outputDefinition.setQueryContextEndIndex(outputStream.getQueryContextEndIndex());
    List<OutputAttribute> outputAttributes = selector.getSelectionList();
    if (selector.getSelectionList().size() == 0) {
        if (metaComplexEvent instanceof MetaStreamEvent) {
            List<Attribute> attributeList = ((MetaStreamEvent) metaComplexEvent).getLastInputDefinition().getAttributeList();
            for (Attribute attribute : attributeList) {
                outputAttributes.add(new OutputAttribute(new Variable(attribute.getName())));
            }
        } else {
            int position = 0;
            for (MetaStreamEvent metaStreamEvent : ((MetaStateEvent) metaComplexEvent).getMetaStreamEvents()) {
                if (metaPosition == SiddhiConstants.UNKNOWN_STATE || metaPosition == position) {
                    List<Attribute> attributeList = metaStreamEvent.getLastInputDefinition().getAttributeList();
                    for (Attribute attribute : attributeList) {
                        OutputAttribute outputAttribute = new OutputAttribute(new Variable(attribute.getName()));
                        if (!outputAttributes.contains(outputAttribute)) {
                            outputAttributes.add(outputAttribute);
                        } else {
                            List<AbstractDefinition> definitions = new ArrayList<>();
                            for (MetaStreamEvent aMetaStreamEvent : ((MetaStateEvent) metaComplexEvent).getMetaStreamEvents()) {
                                definitions.add(aMetaStreamEvent.getLastInputDefinition());
                            }
                            throw new DuplicateAttributeException("Duplicate attribute exist in streams " + definitions, outputStream.getQueryContextStartIndex(), outputStream.getQueryContextEndIndex());
                        }
                    }
                }
                ++position;
            }
        }
    }
    int i = 0;
    for (OutputAttribute outputAttribute : outputAttributes) {
        ExpressionExecutor expressionExecutor = ExpressionParser.parseExpression(outputAttribute.getExpression(), metaComplexEvent, SiddhiConstants.UNKNOWN_STATE, tableMap, variableExpressionExecutors, siddhiAppContext, !(selector.getGroupByList().isEmpty()), 0, queryName);
        if (expressionExecutor instanceof VariableExpressionExecutor) {
            // for variables we will directly put
            // value at conversion stage
            VariableExpressionExecutor executor = ((VariableExpressionExecutor) expressionExecutor);
            if (metaComplexEvent instanceof MetaStateEvent) {
                ((MetaStateEvent) metaComplexEvent).addOutputDataAllowingDuplicate(new MetaStateEventAttribute(executor.getAttribute(), executor.getPosition()));
            } else {
                ((MetaStreamEvent) metaComplexEvent).addOutputDataAllowingDuplicate(executor.getAttribute());
            }
            outputDefinition.attribute(outputAttribute.getRename(), ((VariableExpressionExecutor) expressionExecutor).getAttribute().getType());
        } else {
            // To maintain output variable positions
            if (metaComplexEvent instanceof MetaStateEvent) {
                ((MetaStateEvent) metaComplexEvent).addOutputDataAllowingDuplicate(null);
            } else {
                ((MetaStreamEvent) metaComplexEvent).addOutputDataAllowingDuplicate(null);
            }
            AttributeProcessor attributeProcessor = new AttributeProcessor(expressionExecutor);
            attributeProcessor.setOutputPosition(i);
            attributeProcessorList.add(attributeProcessor);
            outputDefinition.attribute(outputAttribute.getRename(), attributeProcessor.getOutputType());
        }
        i++;
    }
    metaComplexEvent.setOutputDefinition(outputDefinition);
    return attributeProcessorList;
}

Example 22 with Attribute

use of org.wso2.siddhi.query.api.definition.Attribute in project siddhi by wso2.

the class SingleInputStreamParser method generateProcessor.

public static Processor generateProcessor(StreamHandler streamHandler, MetaComplexEvent metaEvent, List<VariableExpressionExecutor> variableExpressionExecutors, SiddhiAppContext siddhiAppContext, Map<String, Table> tableMap, boolean supportsBatchProcessing, boolean outputExpectsExpiredEvents, String queryName) {
    Expression[] parameters = streamHandler.getParameters();
    MetaStreamEvent metaStreamEvent;
    int stateIndex = SiddhiConstants.UNKNOWN_STATE;
    if (metaEvent instanceof MetaStateEvent) {
        stateIndex = ((MetaStateEvent) metaEvent).getStreamEventCount() - 1;
        metaStreamEvent = ((MetaStateEvent) metaEvent).getMetaStreamEvent(stateIndex);
    } else {
        metaStreamEvent = (MetaStreamEvent) metaEvent;
    }
    ExpressionExecutor[] attributeExpressionExecutors;
    if (parameters != null) {
        if (parameters.length > 0) {
            attributeExpressionExecutors = new ExpressionExecutor[parameters.length];
            for (int i = 0, parametersLength = parameters.length; i < parametersLength; i++) {
                attributeExpressionExecutors[i] = ExpressionParser.parseExpression(parameters[i], metaEvent, stateIndex, tableMap, variableExpressionExecutors, siddhiAppContext, false, SiddhiConstants.CURRENT, queryName);
            }
        } else {
            List<Attribute> attributeList = metaStreamEvent.getLastInputDefinition().getAttributeList();
            int parameterSize = attributeList.size();
            attributeExpressionExecutors = new ExpressionExecutor[parameterSize];
            for (int i = 0; i < parameterSize; i++) {
                attributeExpressionExecutors[i] = ExpressionParser.parseExpression(new Variable(attributeList.get(i).getName()), metaEvent, stateIndex, tableMap, variableExpressionExecutors, siddhiAppContext, false, SiddhiConstants.CURRENT, queryName);
            }
        }
    } else {
        attributeExpressionExecutors = new ExpressionExecutor[0];
    }
    ConfigReader configReader;
    if (streamHandler instanceof Filter) {
        return new FilterProcessor(attributeExpressionExecutors[0]);
    } else if (streamHandler instanceof Window) {
        WindowProcessor windowProcessor = (WindowProcessor) SiddhiClassLoader.loadExtensionImplementation((Extension) streamHandler, WindowProcessorExtensionHolder.getInstance(siddhiAppContext));
        configReader = siddhiAppContext.getSiddhiContext().getConfigManager().generateConfigReader(((Window) streamHandler).getNamespace(), ((Window) streamHandler).getName());
        windowProcessor.initProcessor(metaStreamEvent.getLastInputDefinition(), attributeExpressionExecutors, configReader, siddhiAppContext, outputExpectsExpiredEvents, queryName, streamHandler);
        return windowProcessor;
    } else if (streamHandler instanceof StreamFunction) {
        AbstractStreamProcessor abstractStreamProcessor;
        configReader = siddhiAppContext.getSiddhiContext().getConfigManager().generateConfigReader(((StreamFunction) streamHandler).getNamespace(), ((StreamFunction) streamHandler).getName());
        if (supportsBatchProcessing) {
            try {
                abstractStreamProcessor = (StreamProcessor) SiddhiClassLoader.loadExtensionImplementation((Extension) streamHandler, StreamProcessorExtensionHolder.getInstance(siddhiAppContext));
                metaStreamEvent.addInputDefinition(abstractStreamProcessor.initProcessor(metaStreamEvent.getLastInputDefinition(), attributeExpressionExecutors, configReader, siddhiAppContext, outputExpectsExpiredEvents, queryName, streamHandler));
                return abstractStreamProcessor;
            } catch (SiddhiAppCreationException e) {
                if (!e.isClassLoadingIssue()) {
                    ExceptionUtil.populateQueryContext(e, streamHandler, siddhiAppContext);
                    throw e;
                }
            }
        }
        abstractStreamProcessor = (StreamFunctionProcessor) SiddhiClassLoader.loadExtensionImplementation((Extension) streamHandler, StreamFunctionProcessorExtensionHolder.getInstance(siddhiAppContext));
        metaStreamEvent.addInputDefinition(abstractStreamProcessor.initProcessor(metaStreamEvent.getLastInputDefinition(), attributeExpressionExecutors, configReader, siddhiAppContext, outputExpectsExpiredEvents, queryName, streamHandler));
        return abstractStreamProcessor;
    } else {
        throw new SiddhiAppCreationException(streamHandler.getClass().getName() + " is not supported", streamHandler.getQueryContextStartIndex(), streamHandler.getQueryContextEndIndex());
    }
}

Example 23 with Attribute

use of org.wso2.siddhi.query.api.definition.Attribute in project siddhi by wso2.

the class StoreQueryParser method buildExpectedOutputAttributes.

private static List<Attribute> buildExpectedOutputAttributes(StoreQuery storeQuery, SiddhiAppContext siddhiAppContext, Map<String, Table> tableMap, String queryName, int metaPosition, MatchingMetaInfoHolder metaStreamInfoHolder) {
    MetaStateEvent selectMetaStateEvent = new MetaStateEvent(metaStreamInfoHolder.getMetaStateEvent().getMetaStreamEvents());
    SelectorParser.parse(storeQuery.getSelector(), new ReturnStream(OutputStream.OutputEventType.CURRENT_EVENTS), siddhiAppContext, selectMetaStateEvent, tableMap, new ArrayList<>(), queryName, metaPosition);
    return selectMetaStateEvent.getOutputStreamDefinition().getAttributeList();
}

Example 24 with Attribute

use of org.wso2.siddhi.query.api.definition.Attribute in project siddhi by wso2.

the class PartitionTestCase1 method testPartitionQuery39.

@Test
public void testPartitionQuery39() throws InterruptedException {
    log.info("Partition test");
    SiddhiApp siddhiApp = SiddhiApp.siddhiApp("Test").defineStream(StreamDefinition.id("streamA").attribute("symbol", Attribute.Type.STRING).attribute("price", Attribute.Type.INT));
    Query query = Query.query();
    query.from(InputStream.stream("streamA"));
    query.select(Selector.selector().select("symbol", Expression.variable("symbol")).select("price", Expression.variable("price")));
    query.insertInto("StockQuote");
    Partition partition = Partition.partition().annotation(Annotation.annotation("info").element("name", "partitionA")).with("streamA", Expression.variable("symbol")).addQuery(query);
    siddhiApp.addPartition(partition);
    SiddhiManager siddhiManager = new SiddhiManager();
    SiddhiAppRuntime siddhiAppRuntime = siddhiManager.createSiddhiAppRuntime(siddhiApp);
    StreamCallback streamCallback = new StreamCallback() {

        @Override
        public void receive(Event[] events) {
            EventPrinter.print(events);
            AssertJUnit.assertTrue("IBM".equals(events[0].getData(0)) || "WSO2".equals(events[0].getData(0)));
            count.addAndGet(events.length);
            eventArrived = true;
        }
    };
    siddhiAppRuntime.addCallback("StockQuote", streamCallback);
    InputHandler inputHandler = siddhiAppRuntime.getInputHandler("streamA");
    siddhiAppRuntime.start();
    inputHandler.send(new Event(System.currentTimeMillis(), new Object[] { "IBM", 700 }));
    inputHandler.send(new Event(System.currentTimeMillis(), new Object[] { "WSO2", 60 }));
    inputHandler.send(new Event(System.currentTimeMillis(), new Object[] { "WSO2", 60 }));
    Thread.sleep(1000);
    AssertJUnit.assertEquals(3, count.get());
    siddhiAppRuntime.shutdown();
}

Example 25 with Attribute

use of org.wso2.siddhi.query.api.definition.Attribute in project siddhi by wso2.

the class PartitionTestCase1 method testPartitionQuery42.

@Test(expectedExceptions = SiddhiAppCreationException.class)
public void testPartitionQuery42() throws InterruptedException {
    log.info("Partition test");
    SiddhiApp siddhiApp = SiddhiApp.siddhiApp("Test").defineStream(StreamDefinition.id("streamA").attribute("symbol", Attribute.Type.STRING).attribute("price", Attribute.Type.INT));
    Query query = Query.query();
    query.annotation(Annotation.annotation("info").element("name", "query1"));
    query.from(InputStream.stream("streamA"));
    query.select(Selector.selector().select("symbol", Expression.variable("symbol")).select("price", Expression.variable("price")));
    query.insertInto("StockQuote");
    Partition partition = Partition.partition();
    partition.addQuery(query);
    siddhiApp.addPartition(partition);
    SiddhiManager siddhiManager = new SiddhiManager();
    SiddhiAppRuntime siddhiAppRuntime = siddhiManager.createSiddhiAppRuntime(siddhiApp);
    StreamCallback streamCallback = new StreamCallback() {

        @Override
        public void receive(Event[] events) {
            EventPrinter.print(events);
            AssertJUnit.assertTrue("IBM".equals(events[0].getData(0)) || "WSO2".equals(events[0].getData(0)));
            count.addAndGet(events.length);
            eventArrived = true;
        }
    };
    siddhiAppRuntime.addCallback("StockQuote", streamCallback);
    InputHandler inputHandler = siddhiAppRuntime.getInputHandler("streamA");
    siddhiAppRuntime.start();
    inputHandler.send(new Event(System.currentTimeMillis(), new Object[] { "IBM", 700 }));
    inputHandler.send(new Event(System.currentTimeMillis(), new Object[] { "WSO2", 60 }));
    inputHandler.send(new Event(System.currentTimeMillis(), new Object[] { "WSO2", 60 }));
    Thread.sleep(1000);
    AssertJUnit.assertEquals(0, count.get());
    siddhiAppRuntime.shutdown();
}