Examples with MetaStateEventAttribute io.siddhi.core.event.state.MetaStateEventAttribute used on opensource projects

Example 1 with MetaStateEventAttribute

use of io.siddhi.core.event.state.MetaStateEventAttribute in project siddhi by wso2.

the class StateEventPopulatorFactory method getMappingElements.

private static List<StateMappingElement> getMappingElements(MetaStateEvent metaStateEvent) {
    List<StateMappingElement> stateMappingElements = new ArrayList<StateMappingElement>(metaStateEvent.getOutputDataAttributes().size());
    List<MetaStateEventAttribute> currentDataList = metaStateEvent.getOutputDataAttributes();
    if (currentDataList != null) {
        int i = 0;
        for (MetaStateEventAttribute metaStateEventAttribute : currentDataList) {
            // will be filled.
            if (metaStateEventAttribute == null) {
                i++;
            } else {
                StateMappingElement stateMappingElement = new StateMappingElement();
                stateMappingElement.setFromPosition(metaStateEventAttribute.getPosition());
                int toPosition = i;
                stateMappingElement.setToPosition(toPosition);
                stateMappingElements.add(stateMappingElement);
                i++;
            }
        }
    }
    return stateMappingElements;
}

Example 2 with MetaStateEventAttribute

use of io.siddhi.core.event.state.MetaStateEventAttribute 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 metaComplexEvent            meta ComplexEvent
 * @param tableMap                    Table Map
 * @param variableExpressionExecutors list of VariableExpressionExecutors
 * @param outputStream                output stream
 * @param processingMode              processing mode of the query
 * @param outputExpectsExpiredEvents  is expired events sent as output
 * @param groupBy                     is Attributes groupBy
 * @param siddhiQueryContext          current siddhi query context  @return list of AttributeProcessors
 */
private static List<AttributeProcessor> getAttributeProcessors(Selector selector, String id, MetaComplexEvent metaComplexEvent, Map<String, Table> tableMap, List<VariableExpressionExecutor> variableExpressionExecutors, OutputStream outputStream, int metaPosition, ProcessingMode processingMode, boolean outputExpectsExpiredEvents, boolean groupBy, SiddhiQueryContext siddhiQueryContext) {
    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) {
                Variable variable = new Variable(attribute.getName());
                variable.setQueryContextStartIndex(selector.getQueryContextStartIndex());
                variable.setQueryContextEndIndex(selector.getQueryContextEndIndex());
                OutputAttribute outputAttribute = new OutputAttribute(variable);
                outputAttribute.setQueryContextStartIndex(selector.getQueryContextStartIndex());
                outputAttribute.setQueryContextEndIndex(selector.getQueryContextEndIndex());
                outputAttributes.add(outputAttribute);
            }
        } 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) {
                        Variable variable = new Variable(attribute.getName());
                        variable.setQueryContextStartIndex(selector.getQueryContextStartIndex());
                        variable.setQueryContextEndIndex(selector.getQueryContextEndIndex());
                        OutputAttribute outputAttribute = new OutputAttribute(variable);
                        outputAttribute.setQueryContextStartIndex(selector.getQueryContextStartIndex());
                        outputAttribute.setQueryContextEndIndex(selector.getQueryContextEndIndex());
                        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, groupBy, 0, processingMode, outputExpectsExpiredEvents, siddhiQueryContext);
        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 3 with MetaStateEventAttribute

use of io.siddhi.core.event.state.MetaStateEventAttribute in project siddhi by wso2.

the class AbstractQueryableRecordTable method compileSelection.

public CompiledSelection compileSelection(Selector selector, List<Attribute> expectedOutputAttributes, MatchingMetaInfoHolder matchingMetaInfoHolder, List<VariableExpressionExecutor> variableExpressionExecutors, Map<String, Table> tableMap, SiddhiQueryContext siddhiQueryContext) {
    selectorForTestOnDemandQuery = selector;
    siddhiQueryContextForTestOnDemandQuery = siddhiQueryContext;
    matchingMetaInfoHolderForTestOnDemandQuery = matchingMetaInfoHolder;
    List<OutputAttribute> outputAttributes = selector.getSelectionList();
    if (outputAttributes.size() == 0) {
        MetaStreamEvent metaStreamEvent = matchingMetaInfoHolder.getMetaStateEvent().getMetaStreamEvent(matchingMetaInfoHolder.getStoreEventIndex());
        List<Attribute> attributeList = metaStreamEvent.getLastInputDefinition().getAttributeList();
        for (Attribute attribute : attributeList) {
            outputAttributes.add(new OutputAttribute(new Variable(attribute.getName())));
        }
    }
    List<SelectAttributeBuilder> selectAttributeBuilders = new ArrayList<>(outputAttributes.size());
    for (OutputAttribute outputAttribute : outputAttributes) {
        ExpressionBuilder expressionBuilder = new ExpressionBuilder(outputAttribute.getExpression(), matchingMetaInfoHolder, variableExpressionExecutors, tableMap, null, null, siddhiQueryContext);
        selectAttributeBuilders.add(new SelectAttributeBuilder(expressionBuilder, outputAttribute.getRename()));
    }
    MatchingMetaInfoHolder metaInfoHolderAfterSelect = new MatchingMetaInfoHolder(matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getMatchingStreamEventIndex(), matchingMetaInfoHolder.getStoreEventIndex(), matchingMetaInfoHolder.getMatchingStreamDefinition(), matchingMetaInfoHolder.getMatchingStreamDefinition(), matchingMetaInfoHolder.getCurrentState());
    List<ExpressionBuilder> groupByExpressionBuilders = null;
    if (selector.getGroupByList().size() != 0) {
        groupByExpressionBuilders = new ArrayList<>(outputAttributes.size());
        for (Variable variable : selector.getGroupByList()) {
            groupByExpressionBuilders.add(new ExpressionBuilder(variable, metaInfoHolderAfterSelect, variableExpressionExecutors, tableMap, null, null, siddhiQueryContext));
        }
    }
    ExpressionBuilder havingExpressionBuilder = null;
    if (selector.getHavingExpression() != null) {
        havingExpressionBuilder = new ExpressionBuilder(selector.getHavingExpression(), metaInfoHolderAfterSelect, variableExpressionExecutors, tableMap, null, null, siddhiQueryContext);
    }
    List<OrderByAttributeBuilder> orderByAttributeBuilders = null;
    if (selector.getOrderByList().size() != 0) {
        orderByAttributeBuilders = new ArrayList<>(selector.getOrderByList().size());
        for (OrderByAttribute orderByAttribute : selector.getOrderByList()) {
            ExpressionBuilder expressionBuilder = new ExpressionBuilder(orderByAttribute.getVariable(), metaInfoHolderAfterSelect, variableExpressionExecutors, tableMap, null, null, siddhiQueryContext);
            orderByAttributeBuilders.add(new OrderByAttributeBuilder(expressionBuilder, orderByAttribute.getOrder()));
        }
    }
    Long limit = null;
    Long offset = null;
    if (selector.getLimit() != null) {
        ExpressionExecutor expressionExecutor = ExpressionParser.parseExpression((Expression) selector.getLimit(), metaInfoHolderAfterSelect.getMetaStateEvent(), SiddhiConstants.HAVING_STATE, tableMap, variableExpressionExecutors, false, 0, ProcessingMode.BATCH, false, siddhiQueryContext);
        limit = ((Number) (((ConstantExpressionExecutor) expressionExecutor).getValue())).longValue();
        if (limit < 0) {
            throw new SiddhiAppCreationException("'limit' cannot have negative value, but found '" + limit + "'", selector, siddhiQueryContext.getSiddhiAppContext());
        }
    }
    if (selector.getOffset() != null) {
        ExpressionExecutor expressionExecutor = ExpressionParser.parseExpression((Expression) selector.getOffset(), metaInfoHolderAfterSelect.getMetaStateEvent(), SiddhiConstants.HAVING_STATE, tableMap, variableExpressionExecutors, false, 0, ProcessingMode.BATCH, false, siddhiQueryContext);
        offset = ((Number) (((ConstantExpressionExecutor) expressionExecutor).getValue())).longValue();
        if (offset < 0) {
            throw new SiddhiAppCreationException("'offset' cannot have negative value, but found '" + offset + "'", selector, siddhiQueryContext.getSiddhiAppContext());
        }
    }
    CompiledSelection compiledSelection = compileSelection(selectAttributeBuilders, groupByExpressionBuilders, havingExpressionBuilder, orderByAttributeBuilders, limit, offset);
    Map<String, ExpressionExecutor> expressionExecutorMap = new HashMap<>();
    if (selectAttributeBuilders.size() != 0) {
        for (SelectAttributeBuilder selectAttributeBuilder : selectAttributeBuilders) {
            expressionExecutorMap.putAll(selectAttributeBuilder.getExpressionBuilder().getVariableExpressionExecutorMap());
        }
    }
    if (groupByExpressionBuilders != null && groupByExpressionBuilders.size() != 0) {
        for (ExpressionBuilder groupByExpressionBuilder : groupByExpressionBuilders) {
            expressionExecutorMap.putAll(groupByExpressionBuilder.getVariableExpressionExecutorMap());
        }
    }
    if (havingExpressionBuilder != null) {
        expressionExecutorMap.putAll(havingExpressionBuilder.getVariableExpressionExecutorMap());
    }
    if (orderByAttributeBuilders != null && orderByAttributeBuilders.size() != 0) {
        for (OrderByAttributeBuilder orderByAttributeBuilder : orderByAttributeBuilders) {
            expressionExecutorMap.putAll(orderByAttributeBuilder.getExpressionBuilder().getVariableExpressionExecutorMap());
        }
    }
    if (cacheEnabled) {
        CompiledSelectionWithCache compiledSelectionWithCache;
        MetaStateEvent metaStateEventForCacheSelection = matchingMetaInfoHolder.getMetaStateEvent().clone();
        ReturnStream returnStream = new ReturnStream(OutputStream.OutputEventType.CURRENT_EVENTS);
        int metaPosition = SiddhiConstants.UNKNOWN_STATE;
        List<VariableExpressionExecutor> variableExpressionExecutorsForQuerySelector = new ArrayList<>();
        QuerySelector querySelector = SelectorParser.parse(selector, returnStream, metaStateEventForCacheSelection, tableMap, variableExpressionExecutorsForQuerySelector, metaPosition, ProcessingMode.BATCH, false, siddhiQueryContext);
        if (matchingMetaInfoHolder.getMetaStateEvent().getOutputDataAttributes().size() == 0) {
            for (MetaStateEventAttribute outputDataAttribute : metaStateEventForCacheSelection.getOutputDataAttributes()) {
                matchingMetaInfoHolder.getMetaStateEvent().addOutputDataAllowingDuplicate(outputDataAttribute);
            }
        }
        QueryParserHelper.updateVariablePosition(metaStateEventForCacheSelection, variableExpressionExecutorsForQuerySelector);
        querySelector.setEventPopulator(StateEventPopulatorFactory.constructEventPopulator(metaStateEventForCacheSelection));
        RecordStoreCompiledSelection recordStoreCompiledSelection = new RecordStoreCompiledSelection(expressionExecutorMap, compiledSelection);
        compiledSelectionWithCache = new CompiledSelectionWithCache(recordStoreCompiledSelection, querySelector, metaStateEventForCacheSelection, matchingMetaInfoHolder.getStoreEventIndex(), variableExpressionExecutorsForQuerySelector);
        return compiledSelectionWithCache;
    } else {
        return new RecordStoreCompiledSelection(expressionExecutorMap, compiledSelection);
    }
}

Example 4 with MetaStateEventAttribute

use of io.siddhi.core.event.state.MetaStateEventAttribute in project siddhi by siddhi-io.

the class StateEventPopulatorFactory method getMappingElements.

private static List<StateMappingElement> getMappingElements(MetaStateEvent metaStateEvent) {
    List<StateMappingElement> stateMappingElements = new ArrayList<StateMappingElement>(metaStateEvent.getOutputDataAttributes().size());
    List<MetaStateEventAttribute> currentDataList = metaStateEvent.getOutputDataAttributes();
    if (currentDataList != null) {
        int i = 0;
        for (MetaStateEventAttribute metaStateEventAttribute : currentDataList) {
            // will be filled.
            if (metaStateEventAttribute == null) {
                i++;
            } else {
                StateMappingElement stateMappingElement = new StateMappingElement();
                stateMappingElement.setFromPosition(metaStateEventAttribute.getPosition());
                int toPosition = i;
                stateMappingElement.setToPosition(toPosition);
                stateMappingElements.add(stateMappingElement);
                i++;
            }
        }
    }
    return stateMappingElements;
}

Example 5 with MetaStateEventAttribute

use of io.siddhi.core.event.state.MetaStateEventAttribute in project siddhi by siddhi-io.

the class AbstractQueryableRecordTable method compileSelection.

public CompiledSelection compileSelection(Selector selector, List<Attribute> expectedOutputAttributes, MatchingMetaInfoHolder matchingMetaInfoHolder, List<VariableExpressionExecutor> variableExpressionExecutors, Map<String, Table> tableMap, SiddhiQueryContext siddhiQueryContext) {
    selectorForTestOnDemandQuery = selector;
    siddhiQueryContextForTestOnDemandQuery = siddhiQueryContext;
    matchingMetaInfoHolderForTestOnDemandQuery = matchingMetaInfoHolder;
    List<OutputAttribute> outputAttributes = selector.getSelectionList();
    if (outputAttributes.size() == 0) {
        MetaStreamEvent metaStreamEvent = matchingMetaInfoHolder.getMetaStateEvent().getMetaStreamEvent(matchingMetaInfoHolder.getStoreEventIndex());
        List<Attribute> attributeList = metaStreamEvent.getLastInputDefinition().getAttributeList();
        for (Attribute attribute : attributeList) {
            outputAttributes.add(new OutputAttribute(new Variable(attribute.getName())));
        }
    }
    List<SelectAttributeBuilder> selectAttributeBuilders = new ArrayList<>(outputAttributes.size());
    for (OutputAttribute outputAttribute : outputAttributes) {
        ExpressionBuilder expressionBuilder = new ExpressionBuilder(outputAttribute.getExpression(), matchingMetaInfoHolder, variableExpressionExecutors, tableMap, null, null, siddhiQueryContext);
        selectAttributeBuilders.add(new SelectAttributeBuilder(expressionBuilder, outputAttribute.getRename()));
    }
    MatchingMetaInfoHolder metaInfoHolderAfterSelect = new MatchingMetaInfoHolder(matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getMatchingStreamEventIndex(), matchingMetaInfoHolder.getStoreEventIndex(), matchingMetaInfoHolder.getMatchingStreamDefinition(), matchingMetaInfoHolder.getMatchingStreamDefinition(), matchingMetaInfoHolder.getCurrentState());
    List<ExpressionBuilder> groupByExpressionBuilders = null;
    if (selector.getGroupByList().size() != 0) {
        groupByExpressionBuilders = new ArrayList<>(outputAttributes.size());
        for (Variable variable : selector.getGroupByList()) {
            groupByExpressionBuilders.add(new ExpressionBuilder(variable, metaInfoHolderAfterSelect, variableExpressionExecutors, tableMap, null, null, siddhiQueryContext));
        }
    }
    ExpressionBuilder havingExpressionBuilder = null;
    if (selector.getHavingExpression() != null) {
        havingExpressionBuilder = new ExpressionBuilder(selector.getHavingExpression(), metaInfoHolderAfterSelect, variableExpressionExecutors, tableMap, null, null, siddhiQueryContext);
    }
    List<OrderByAttributeBuilder> orderByAttributeBuilders = null;
    if (selector.getOrderByList().size() != 0) {
        orderByAttributeBuilders = new ArrayList<>(selector.getOrderByList().size());
        for (OrderByAttribute orderByAttribute : selector.getOrderByList()) {
            ExpressionBuilder expressionBuilder = new ExpressionBuilder(orderByAttribute.getVariable(), metaInfoHolderAfterSelect, variableExpressionExecutors, tableMap, null, null, siddhiQueryContext);
            orderByAttributeBuilders.add(new OrderByAttributeBuilder(expressionBuilder, orderByAttribute.getOrder()));
        }
    }
    Long limit = null;
    Long offset = null;
    if (selector.getLimit() != null) {
        ExpressionExecutor expressionExecutor = ExpressionParser.parseExpression((Expression) selector.getLimit(), metaInfoHolderAfterSelect.getMetaStateEvent(), SiddhiConstants.HAVING_STATE, tableMap, variableExpressionExecutors, false, 0, ProcessingMode.BATCH, false, siddhiQueryContext);
        limit = ((Number) (((ConstantExpressionExecutor) expressionExecutor).getValue())).longValue();
        if (limit < 0) {
            throw new SiddhiAppCreationException("'limit' cannot have negative value, but found '" + limit + "'", selector, siddhiQueryContext.getSiddhiAppContext());
        }
    }
    if (selector.getOffset() != null) {
        ExpressionExecutor expressionExecutor = ExpressionParser.parseExpression((Expression) selector.getOffset(), metaInfoHolderAfterSelect.getMetaStateEvent(), SiddhiConstants.HAVING_STATE, tableMap, variableExpressionExecutors, false, 0, ProcessingMode.BATCH, false, siddhiQueryContext);
        offset = ((Number) (((ConstantExpressionExecutor) expressionExecutor).getValue())).longValue();
        if (offset < 0) {
            throw new SiddhiAppCreationException("'offset' cannot have negative value, but found '" + offset + "'", selector, siddhiQueryContext.getSiddhiAppContext());
        }
    }
    CompiledSelection compiledSelection = compileSelection(selectAttributeBuilders, groupByExpressionBuilders, havingExpressionBuilder, orderByAttributeBuilders, limit, offset);
    Map<String, ExpressionExecutor> expressionExecutorMap = new HashMap<>();
    if (selectAttributeBuilders.size() != 0) {
        for (SelectAttributeBuilder selectAttributeBuilder : selectAttributeBuilders) {
            expressionExecutorMap.putAll(selectAttributeBuilder.getExpressionBuilder().getVariableExpressionExecutorMap());
        }
    }
    if (groupByExpressionBuilders != null && groupByExpressionBuilders.size() != 0) {
        for (ExpressionBuilder groupByExpressionBuilder : groupByExpressionBuilders) {
            expressionExecutorMap.putAll(groupByExpressionBuilder.getVariableExpressionExecutorMap());
        }
    }
    if (havingExpressionBuilder != null) {
        expressionExecutorMap.putAll(havingExpressionBuilder.getVariableExpressionExecutorMap());
    }
    if (orderByAttributeBuilders != null && orderByAttributeBuilders.size() != 0) {
        for (OrderByAttributeBuilder orderByAttributeBuilder : orderByAttributeBuilders) {
            expressionExecutorMap.putAll(orderByAttributeBuilder.getExpressionBuilder().getVariableExpressionExecutorMap());
        }
    }
    if (cacheEnabled) {
        CompiledSelectionWithCache compiledSelectionWithCache;
        MetaStateEvent metaStateEventForCacheSelection = matchingMetaInfoHolder.getMetaStateEvent().clone();
        ReturnStream returnStream = new ReturnStream(OutputStream.OutputEventType.CURRENT_EVENTS);
        int metaPosition = SiddhiConstants.UNKNOWN_STATE;
        List<VariableExpressionExecutor> variableExpressionExecutorsForQuerySelector = new ArrayList<>();
        QuerySelector querySelector = SelectorParser.parse(selector, returnStream, metaStateEventForCacheSelection, tableMap, variableExpressionExecutorsForQuerySelector, metaPosition, ProcessingMode.BATCH, false, siddhiQueryContext);
        if (matchingMetaInfoHolder.getMetaStateEvent().getOutputDataAttributes().size() == 0) {
            for (MetaStateEventAttribute outputDataAttribute : metaStateEventForCacheSelection.getOutputDataAttributes()) {
                matchingMetaInfoHolder.getMetaStateEvent().addOutputDataAllowingDuplicate(outputDataAttribute);
            }
        }
        QueryParserHelper.updateVariablePosition(metaStateEventForCacheSelection, variableExpressionExecutorsForQuerySelector);
        querySelector.setEventPopulator(StateEventPopulatorFactory.constructEventPopulator(metaStateEventForCacheSelection));
        RecordStoreCompiledSelection recordStoreCompiledSelection = new RecordStoreCompiledSelection(expressionExecutorMap, compiledSelection);
        compiledSelectionWithCache = new CompiledSelectionWithCache(recordStoreCompiledSelection, querySelector, metaStateEventForCacheSelection, matchingMetaInfoHolder.getStoreEventIndex(), variableExpressionExecutorsForQuerySelector);
        return compiledSelectionWithCache;
    } else {
        return new RecordStoreCompiledSelection(expressionExecutorMap, compiledSelection);
    }
}