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

Example 46 with Attribute

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

the class AbstractQueryableRecordTable method initCache.

@Override
public void initCache(TableDefinition tableDefinition, SiddhiAppContext siddhiAppContext, StreamEventCloner storeEventCloner, ConfigReader configReader) {
    String[] annotationNames = { ANNOTATION_STORE, ANNOTATION_CACHE };
    Annotation cacheTableAnnotation = getAnnotation(annotationNames, tableDefinition.getAnnotations());
    if (cacheTableAnnotation != null) {
        cacheEnabled = true;
        maxCacheSize = Integer.parseInt(cacheTableAnnotation.getElement(CACHE_TABLE_SIZE));
        TableDefinition cacheTableDefinition = TableDefinition.id(tableDefinition.getId());
        for (Attribute attribute : tableDefinition.getAttributeList()) {
            cacheTableDefinition.attribute(attribute.getName(), attribute.getType());
        }
        for (Annotation annotation : tableDefinition.getAnnotations()) {
            if (!annotation.getName().equalsIgnoreCase("Store")) {
                cacheTableDefinition.annotation(annotation);
            }
        }
        String cachePolicy = cacheTableAnnotation.getElement(ANNOTATION_CACHE_POLICY);
        if (cachePolicy == null || cachePolicy.equalsIgnoreCase("FIFO")) {
            cachePolicy = "FIFO";
            cacheTable = new CacheTableFIFO();
        } else if (cachePolicy.equalsIgnoreCase("LRU")) {
            cacheTable = new CacheTableLRU();
        } else if (cachePolicy.equalsIgnoreCase("LFU")) {
            cacheTable = new CacheTableLFU();
        } else {
            throw new SiddhiAppCreationException(siddhiAppContext.getName() + " : Cache policy can only be one " + "of FIFO, LRU, and LFU but given as " + cachePolicy);
        }
        // check if cache expiry enabled and initialize relevant parameters
        if (cacheTableAnnotation.getElement(ANNOTATION_CACHE_RETENTION_PERIOD) != null) {
            cacheExpiryEnabled = true;
            retentionPeriod = Expression.Time.timeToLong(cacheTableAnnotation.getElement(ANNOTATION_CACHE_RETENTION_PERIOD));
            if (cacheTableAnnotation.getElement(ANNOTATION_CACHE_PURGE_INTERVAL) == null) {
                purgeInterval = retentionPeriod;
            } else {
                purgeInterval = Expression.Time.timeToLong(cacheTableAnnotation.getElement(ANNOTATION_CACHE_PURGE_INTERVAL));
            }
            storeSizeCheckInterval = purgeInterval * 5;
        } else {
            storeSizeCheckInterval = 10000;
        }
        ((CacheTable) cacheTable).initCacheTable(cacheTableDefinition, configReader, siddhiAppContext, recordTableHandler, cacheExpiryEnabled, maxCacheSize, cachePolicy);
        // creating objects needed to load cache
        SiddhiQueryContext siddhiQueryContext = new SiddhiQueryContext(siddhiAppContext, CACHE_QUERY_NAME + tableDefinition.getId());
        MatchingMetaInfoHolder matchingMetaInfoHolder = generateMatchingMetaInfoHolderForCacheTable(tableDefinition);
        OnDemandQuery onDemandQuery = OnDemandQuery.query().from(InputStore.store(tableDefinition.getId())).select(Selector.selector().limit(Expression.value((maxCacheSize + 1))));
        List<VariableExpressionExecutor> variableExpressionExecutors = new ArrayList<>();
        compiledConditionForCaching = compileCondition(Expression.value(true), matchingMetaInfoHolder, variableExpressionExecutors, tableMap, siddhiQueryContext);
        List<Attribute> expectedOutputAttributes = buildExpectedOutputAttributes(onDemandQuery, tableMap, SiddhiConstants.UNKNOWN_STATE, matchingMetaInfoHolder, siddhiQueryContext);
        compiledSelectionForCaching = compileSelection(onDemandQuery.getSelector(), expectedOutputAttributes, matchingMetaInfoHolder, variableExpressionExecutors, tableMap, siddhiQueryContext);
        outputAttributesForCaching = expectedOutputAttributes.toArray(new Attribute[0]);
        QueryParserHelper.reduceMetaComplexEvent(matchingMetaInfoHolder.getMetaStateEvent());
        QueryParserHelper.updateVariablePosition(matchingMetaInfoHolder.getMetaStateEvent(), variableExpressionExecutors);
        compiledSelectionForSelectAll = generateCSForSelectAll();
    }
}

Example 47 with Attribute

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

the class AbstractQueryableRecordTable method generateCSForSelectAll.

private CompiledSelection generateCSForSelectAll() {
    MetaStreamEvent metaStreamEventForSelectAll = new MetaStreamEvent();
    for (Attribute attribute : tableDefinition.getAttributeList()) {
        metaStreamEventForSelectAll.addOutputData(attribute);
    }
    metaStreamEventForSelectAll.addInputDefinition(tableDefinition);
    MetaStateEvent metaStateEventForSelectAll = new MetaStateEvent(1);
    metaStateEventForSelectAll.addEvent(metaStreamEventForSelectAll);
    MatchingMetaInfoHolder matchingMetaInfoHolderForSlectAll = new MatchingMetaInfoHolder(metaStateEventForSelectAll, -1, 0, tableDefinition, tableDefinition, 0);
    List<OutputAttribute> outputAttributesAll = new ArrayList<>();
    List<Attribute> attributeList = tableDefinition.getAttributeList();
    for (Attribute attribute : attributeList) {
        outputAttributesAll.add(new OutputAttribute(new Variable(attribute.getName())));
    }
    List<SelectAttributeBuilder> selectAttributeBuilders = new ArrayList<>(outputAttributesAll.size());
    List<VariableExpressionExecutor> variableExpressionExecutors = new ArrayList<>();
    for (OutputAttribute outputAttribute : outputAttributesAll) {
        ExpressionBuilder expressionBuilder = new ExpressionBuilder(outputAttribute.getExpression(), matchingMetaInfoHolderForSlectAll, variableExpressionExecutors, tableMap, null, null, null);
        selectAttributeBuilders.add(new SelectAttributeBuilder(expressionBuilder, outputAttribute.getRename()));
    }
    return compileSelection(selectAttributeBuilders, null, null, null, null, null);
}

Example 48 with Attribute

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

the class CacheExpirer method generateExpiryCompiledCondition.

private CompiledCondition generateExpiryCompiledCondition() {
    MetaStreamEvent tableMetaStreamEvent = new MetaStreamEvent();
    tableMetaStreamEvent.setEventType(MetaStreamEvent.EventType.TABLE);
    TableDefinition matchingTableDefinition = TableDefinition.id(cacheTable.getTableDefinition().getId());
    for (Attribute attribute : cacheTable.getTableDefinition().getAttributeList()) {
        tableMetaStreamEvent.addOutputData(attribute);
        matchingTableDefinition.attribute(attribute.getName(), attribute.getType());
    }
    tableMetaStreamEvent.addInputDefinition(matchingTableDefinition);
    streamEventFactory = new StreamEventFactory(tableMetaStreamEvent);
    Variable rightExpressionForSubtract = new Variable(CACHE_TABLE_TIMESTAMP_ADDED);
    rightExpressionForSubtract.setStreamId(cacheTable.getTableDefinition().getId());
    Expression rightExpressionForCompare = new LongConstant(retentionPeriod);
    Compare.Operator greaterThanOperator = Compare.Operator.GREATER_THAN;
    MetaStreamEvent currentTimeMetaStreamEvent = new MetaStreamEvent();
    currentTimeMetaStreamEvent.setEventType(MetaStreamEvent.EventType.TABLE);
    Attribute currentTimeAttribute = new Attribute(CACHE_EXPIRE_CURRENT_TIME, Attribute.Type.LONG);
    currentTimeMetaStreamEvent.addOutputData(currentTimeAttribute);
    TableDefinition currentTimeTableDefinition = TableDefinition.id("");
    currentTimeTableDefinition.attribute(CACHE_EXPIRE_CURRENT_TIME, Attribute.Type.LONG);
    currentTimeMetaStreamEvent.addInputDefinition(currentTimeTableDefinition);
    MetaStateEvent metaStateEvent = new MetaStateEvent(2);
    metaStateEvent.addEvent(currentTimeMetaStreamEvent);
    metaStateEvent.addEvent(tableMetaStreamEvent);
    MatchingMetaInfoHolder matchingMetaInfoHolder = MatcherParser.constructMatchingMetaStateHolder(metaStateEvent, 0, cacheTable.getTableDefinition(), 0);
    List<VariableExpressionExecutor> variableExpressionExecutors = new ArrayList<>();
    Expression leftExpressionForSubtract = new Variable(CACHE_EXPIRE_CURRENT_TIME);
    Expression leftExpressionForCompare = new Subtract(leftExpressionForSubtract, rightExpressionForSubtract);
    Expression deleteCondition = new Compare(leftExpressionForCompare, greaterThanOperator, rightExpressionForCompare);
    SiddhiQueryContext siddhiQueryContext = new SiddhiQueryContext(siddhiAppContext, "expiryDeleteQuery");
    return cacheTable.compileCondition(deleteCondition, matchingMetaInfoHolder, variableExpressionExecutors, tableMap, siddhiQueryContext);
}

Example 49 with Attribute

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

the class IncrementalDataPurger method matchingMetaInfoHolder.

/**
 * Building the MatchingMetaInfoHolder for delete records
 */
private MatchingMetaInfoHolder matchingMetaInfoHolder(Table table, Attribute attribute) {
    MetaStateEvent metaStateEvent = new MetaStateEvent(2);
    MetaStreamEvent metaStreamEventWithDeletePara = new MetaStreamEvent();
    MetaStreamEvent metaStreamEventForTable = new MetaStreamEvent();
    TableDefinition deleteTableDefinition = TableDefinition.id("");
    deleteTableDefinition.attribute(attribute.getName(), attribute.getType());
    metaStreamEventWithDeletePara.setEventType(MetaStreamEvent.EventType.TABLE);
    metaStreamEventWithDeletePara.addOutputData(attribute);
    metaStreamEventWithDeletePara.addInputDefinition(deleteTableDefinition);
    metaStreamEventForTable.setEventType(MetaStreamEvent.EventType.TABLE);
    for (Attribute attributes : table.getTableDefinition().getAttributeList()) {
        metaStreamEventForTable.addOutputData(attributes);
    }
    metaStreamEventForTable.addInputDefinition(table.getTableDefinition());
    metaStateEvent.addEvent(metaStreamEventWithDeletePara);
    metaStateEvent.addEvent(metaStreamEventForTable);
    TableDefinition definition = table.getTableDefinition();
    return new MatchingMetaInfoHolder(metaStateEvent, 0, 1, deleteTableDefinition, definition, 0);
}

Example 50 with Attribute

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

the class StreamEventConverterFactory method getConversionElements.

private static List<StreamEventConverter.ConversionMapping> getConversionElements(MetaStreamEvent metaStreamEvent, int size) {
    AbstractDefinition inputDefinition = metaStreamEvent.getInputDefinitions().get(0);
    List<StreamEventConverter.ConversionMapping> conversionMappings = new ArrayList<StreamEventConverter.ConversionMapping>(size);
    for (int j = 0; j < 3; j++) {
        List<Attribute> currentDataList = null;
        if (j == 0) {
            currentDataList = metaStreamEvent.getBeforeWindowData();
        } else if (j == 1) {
            currentDataList = metaStreamEvent.getOnAfterWindowData();
        } else if (j == 2) {
            currentDataList = metaStreamEvent.getOutputData();
        }
        if (currentDataList != null) {
            int i = 0;
            for (Attribute attribute : currentDataList) {
                // Only variable slots will be filled.
                if (attribute == null) {
                    i++;
                } else if (!inputDefinition.getAttributeList().contains(attribute)) {
                    i++;
                } else {
                    int fromPosition = inputDefinition.getAttributePosition(attribute.getName());
                    StreamEventConverter.ConversionMapping conversionMapping = new StreamEventConverter.ConversionMapping();
                    conversionMapping.setFromPosition(fromPosition);
                    int[] toPosition = new int[2];
                    toPosition[0] = j;
                    toPosition[1] = i;
                    conversionMapping.setToPosition(toPosition);
                    conversionMappings.add(conversionMapping);
                    i++;
                }
            }
        }
    }
    return conversionMappings;
}