use of io.siddhi.query.api.execution.query.input.handler.Window in project siddhi by wso2.
the class SingleInputStreamParser method generateProcessor.
public static Processor generateProcessor(StreamHandler streamHandler, MetaComplexEvent metaEvent, List<VariableExpressionExecutor> variableExpressionExecutors, Map<String, Table> tableMap, boolean supportsBatchProcessing, boolean outputExpectsExpiredEvents, boolean findToBeExecuted, SiddhiQueryContext siddhiQueryContext) {
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;
}
if (streamHandler instanceof Window) {
metaStreamEvent.initializeOnAfterWindowData();
}
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, false, SiddhiConstants.CURRENT, ProcessingMode.BATCH, false, siddhiQueryContext);
}
} 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, false, SiddhiConstants.CURRENT, ProcessingMode.BATCH, false, siddhiQueryContext);
}
}
} 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(siddhiQueryContext.getSiddhiAppContext()));
configReader = siddhiQueryContext.getSiddhiContext().getConfigManager().generateConfigReader(((Window) streamHandler).getNamespace(), ((Window) streamHandler).getName());
windowProcessor.initProcessor(metaStreamEvent, attributeExpressionExecutors, configReader, outputExpectsExpiredEvents, findToBeExecuted, false, streamHandler, siddhiQueryContext);
return windowProcessor;
} else if (streamHandler instanceof StreamFunction) {
AbstractStreamProcessor abstractStreamProcessor;
configReader = siddhiQueryContext.getSiddhiContext().getConfigManager().generateConfigReader(((StreamFunction) streamHandler).getNamespace(), ((StreamFunction) streamHandler).getName());
if (supportsBatchProcessing) {
try {
abstractStreamProcessor = (StreamProcessor) SiddhiClassLoader.loadExtensionImplementation((Extension) streamHandler, StreamProcessorExtensionHolder.getInstance(siddhiQueryContext.getSiddhiAppContext()));
abstractStreamProcessor.initProcessor(metaStreamEvent, attributeExpressionExecutors, configReader, outputExpectsExpiredEvents, false, false, streamHandler, siddhiQueryContext);
return abstractStreamProcessor;
} catch (SiddhiAppCreationException e) {
if (!e.isClassLoadingIssue()) {
ExceptionUtil.populateQueryContext(e, streamHandler, siddhiQueryContext.getSiddhiAppContext(), siddhiQueryContext);
throw e;
}
}
}
abstractStreamProcessor = (StreamFunctionProcessor) SiddhiClassLoader.loadExtensionImplementation((Extension) streamHandler, StreamFunctionProcessorExtensionHolder.getInstance(siddhiQueryContext.getSiddhiAppContext()));
abstractStreamProcessor.initProcessor(metaStreamEvent, attributeExpressionExecutors, configReader, outputExpectsExpiredEvents, false, false, streamHandler, siddhiQueryContext);
return abstractStreamProcessor;
} else {
throw new SiddhiAppCreationException(streamHandler.getClass().getName() + " is not supported", streamHandler.getQueryContextStartIndex(), streamHandler.getQueryContextEndIndex());
}
}
use of io.siddhi.query.api.execution.query.input.handler.Window in project siddhi by wso2.
the class SiddhiQLBaseVisitorImpl method visitStandard_stream.
/**
* {@inheritDoc}
* <p>The default implementation returns the result of calling
* {@link #visitChildren} on {@code ctx}.</p>
*
* @param ctx
*/
@Override
public SingleInputStream visitStandard_stream(@NotNull SiddhiQLParser.Standard_streamContext ctx) {
// standard_stream
// : io (basic_source_stream_handler)* window? (basic_source_stream_handler)*
// ;
Source source = (Source) visit(ctx.source());
BasicSingleInputStream basicSingleInputStream = new BasicSingleInputStream(null, source.streamId, source.isInnerStream, source.isFaultStream);
if (ctx.pre_window_handlers != null) {
basicSingleInputStream.addStreamHandlers((List<StreamHandler>) visit(ctx.pre_window_handlers));
}
if (ctx.window() == null && ctx.post_window_handlers == null) {
populateQueryContext(basicSingleInputStream, ctx);
return basicSingleInputStream;
} else if (ctx.window() != null) {
SingleInputStream singleInputStream = new SingleInputStream(basicSingleInputStream, (Window) visit(ctx.window()));
if (ctx.post_window_handlers != null) {
singleInputStream.addStreamHandlers((List<StreamHandler>) visit(ctx.post_window_handlers));
}
populateQueryContext(singleInputStream, ctx);
return singleInputStream;
} else {
throw newSiddhiParserException(ctx);
}
}
use of io.siddhi.query.api.execution.query.input.handler.Window in project siddhi by wso2.
the class SimpleQueryTestCase method testCreatingReturnFilterQueryWithExtension3.
@Test
public void testCreatingReturnFilterQueryWithExtension3() {
Query query = Query.query();
Window window1 = new Window("Foo");
AssertJUnit.assertFalse(window1.equals("falsewindow"));
query.from(InputStream.stream("StockStream").filter(Expression.and(Expression.compare(Expression.function("ext", "FooBarCond", Expression.value(7), Expression.value(9.5)), Compare.Operator.GREATER_THAN, Expression.variable("price")), Expression.function("ext", "BarCond", Expression.value(100), Expression.variable("volume")))).function("ext", "Foo", Expression.value(67), Expression.value(89)).window(window1));
query.select(Selector.selector().select("symbol", Expression.variable("symbol")).select("avgPrice", Expression.function("ext", "avg", Expression.variable("price"))));
}
use of io.siddhi.query.api.execution.query.input.handler.Window in project siddhi by wso2.
the class SimpleQueryTestCase method testCreatingReturnFilterQueryWithExtension2.
@Test
public void testCreatingReturnFilterQueryWithExtension2() {
Query query = Query.query();
Window window1 = new Window("ext", "Foo");
query.from(InputStream.stream("StockStream").filter(Expression.and(Expression.compare(Expression.function("ext", "FooBarCond", Expression.value(7), Expression.value(9.5)), Compare.Operator.GREATER_THAN, Expression.variable("price")), Expression.function("ext", "BarCond", Expression.value(100), Expression.variable("volume")))).function("ext", "Foo", Expression.value(67), Expression.value(89)).window(window1));
query.select(Selector.selector().select("symbol", Expression.variable("symbol")).select("avgPrice", Expression.function("ext", "avg", Expression.variable("price"))));
}
use of io.siddhi.query.api.execution.query.input.handler.Window in project siddhi by wso2.
the class SingleInputStreamParser method parseInputStream.
/**
* Parse single InputStream and return SingleStreamRuntime
*
* @param inputStream single input stream 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 expired events sent as output
* @param findToBeExecuted find will be executed in the steam stores
* @param multiValue event has the possibility to produce multiple values
* @param siddhiQueryContext @return SingleStreamRuntime
*/
public static SingleStreamRuntime parseInputStream(SingleInputStream inputStream, 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, boolean findToBeExecuted, boolean multiValue, SiddhiQueryContext siddhiQueryContext) {
Processor processor = null;
EntryValveProcessor entryValveProcessor = null;
ProcessingMode processingMode = ProcessingMode.BATCH;
boolean first = true;
MetaStreamEvent metaStreamEvent;
if (metaComplexEvent instanceof MetaStateEvent) {
metaStreamEvent = new MetaStreamEvent();
((MetaStateEvent) metaComplexEvent).addEvent(metaStreamEvent);
initMetaStreamEvent(inputStream, streamDefinitionMap, tableDefinitionMap, windowDefinitionMap, aggregationDefinitionMap, multiValue, metaStreamEvent);
} else {
metaStreamEvent = (MetaStreamEvent) metaComplexEvent;
initMetaStreamEvent(inputStream, streamDefinitionMap, tableDefinitionMap, windowDefinitionMap, aggregationDefinitionMap, multiValue, 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, tableMap, supportsBatchProcessing, outputExpectsExpiredEvents, findToBeExecuted, siddhiQueryContext);
if (currentProcessor instanceof SchedulingProcessor) {
if (entryValveProcessor == null) {
entryValveProcessor = new EntryValveProcessor(siddhiQueryContext.getSiddhiAppContext());
if (first) {
processor = entryValveProcessor;
first = false;
} else {
processor.setToLast(entryValveProcessor);
}
}
Scheduler scheduler = SchedulerParser.parse(entryValveProcessor, siddhiQueryContext);
((SchedulingProcessor) currentProcessor).setScheduler(scheduler);
}
if (currentProcessor instanceof AbstractStreamProcessor) {
processingMode = ProcessingMode.findUpdatedProcessingMode(processingMode, ((AbstractStreamProcessor) currentProcessor).getProcessingMode());
}
if (first) {
processor = currentProcessor;
first = false;
} else {
processor.setToLast(currentProcessor);
}
}
}
metaStreamEvent.initializeOnAfterWindowData();
return new SingleStreamRuntime(processStreamReceiver, processor, processingMode, metaComplexEvent);
}
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