Examples with Processor org.ballerinalang.siddhi.core.query.processor.Processor used on opensource projects

Example 6 with Processor

use of org.ballerinalang.siddhi.core.query.processor.Processor in project ballerina by ballerina-lang.

the class SingleInputStreamParser method parseInputStream.

/**
 * Parse single InputStream and return SingleStreamRuntime.
 *
 * @param inputStream                 single input stream to be parsed
 * @param siddhiAppContext            query to be parsed
 * @param variableExpressionExecutors List to hold VariableExpressionExecutors to update after query parsing
 * @param streamDefinitionMap         Stream Definition Map
 * @param tableDefinitionMap          Table Definition Map
 * @param windowDefinitionMap         window definition map
 * @param aggregationDefinitionMap    aggregation definition map
 * @param tableMap                    Table Map
 * @param metaComplexEvent            MetaComplexEvent
 * @param processStreamReceiver       ProcessStreamReceiver
 * @param supportsBatchProcessing     supports batch processing
 * @param outputExpectsExpiredEvents  is output expects ExpiredEvents
 * @param queryName                   query name of single input stream belongs to.
 * @return SingleStreamRuntime
 */
public static SingleStreamRuntime parseInputStream(SingleInputStream inputStream, SiddhiAppContext siddhiAppContext, List<VariableExpressionExecutor> variableExpressionExecutors, Map<String, AbstractDefinition> streamDefinitionMap, Map<String, AbstractDefinition> tableDefinitionMap, Map<String, AbstractDefinition> windowDefinitionMap, Map<String, AbstractDefinition> aggregationDefinitionMap, Map<String, Table> tableMap, MetaComplexEvent metaComplexEvent, ProcessStreamReceiver processStreamReceiver, boolean supportsBatchProcessing, boolean outputExpectsExpiredEvents, String queryName) {
    Processor processor = null;
    EntryValveProcessor entryValveProcessor = null;
    boolean first = true;
    MetaStreamEvent metaStreamEvent;
    if (metaComplexEvent instanceof MetaStateEvent) {
        metaStreamEvent = new MetaStreamEvent();
        ((MetaStateEvent) metaComplexEvent).addEvent(metaStreamEvent);
        initMetaStreamEvent(inputStream, streamDefinitionMap, tableDefinitionMap, windowDefinitionMap, aggregationDefinitionMap, metaStreamEvent);
    } else {
        metaStreamEvent = (MetaStreamEvent) metaComplexEvent;
        initMetaStreamEvent(inputStream, streamDefinitionMap, tableDefinitionMap, windowDefinitionMap, aggregationDefinitionMap, metaStreamEvent);
    }
    // A window cannot be defined for a window stream
    if (!inputStream.getStreamHandlers().isEmpty() && windowDefinitionMap != null && windowDefinitionMap.containsKey(inputStream.getStreamId())) {
        for (StreamHandler handler : inputStream.getStreamHandlers()) {
            if (handler instanceof Window) {
                throw new OperationNotSupportedException("Cannot create " + ((Window) handler).getName() + " " + "window for the window stream " + inputStream.getStreamId());
            }
        }
    }
    if (!inputStream.getStreamHandlers().isEmpty()) {
        for (StreamHandler handler : inputStream.getStreamHandlers()) {
            Processor currentProcessor = generateProcessor(handler, metaComplexEvent, variableExpressionExecutors, siddhiAppContext, tableMap, supportsBatchProcessing, outputExpectsExpiredEvents, queryName);
            if (currentProcessor instanceof SchedulingProcessor) {
                if (entryValveProcessor == null) {
                    entryValveProcessor = new EntryValveProcessor(siddhiAppContext);
                    if (first) {
                        processor = entryValveProcessor;
                        first = false;
                    } else {
                        processor.setToLast(entryValveProcessor);
                    }
                }
                Scheduler scheduler = SchedulerParser.parse(siddhiAppContext.getScheduledExecutorService(), entryValveProcessor, siddhiAppContext);
                ((SchedulingProcessor) currentProcessor).setScheduler(scheduler);
            }
            if (first) {
                processor = currentProcessor;
                first = false;
            } else {
                processor.setToLast(currentProcessor);
            }
        }
    }
    metaStreamEvent.initializeAfterWindowData();
    return new SingleStreamRuntime(processStreamReceiver, processor, metaComplexEvent);
}