use of org.ballerinalang.siddhi.query.api.execution.query.input.handler.Window in project ballerina by ballerina-lang.
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());
}
}
use of org.ballerinalang.siddhi.query.api.execution.query.input.handler.Window in project ballerina by ballerina-lang.
the class SiddhiQLBaseVisitorImpl method visitWindow.
/**
* {@inheritDoc}
* <p>The default implementation returns the result of calling
* {@link #visitChildren} on {@code ctx}.</p>
*
* @param ctx
*/
@Override
public Window visitWindow(@NotNull SiddhiQLParser.WindowContext ctx) {
AttributeFunction attributeFunction = (AttributeFunction) visit(ctx.function_operation());
Window window = new Window(attributeFunction.getNamespace(), attributeFunction.getName(), attributeFunction.getParameters());
populateQueryContext(window, ctx);
return window;
}
use of org.ballerinalang.siddhi.query.api.execution.query.input.handler.Window in project ballerina by ballerina-lang.
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);
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 org.ballerinalang.siddhi.query.api.execution.query.input.handler.Window in project ballerina by ballerina-lang.
the class SiddhiQLBaseVisitorImpl method visitDefinition_window.
@Override
public Object visitDefinition_window(@NotNull SiddhiQLParser.Definition_windowContext ctx) {
Source source = (Source) visit(ctx.source());
if (source.isInnerStream) {
throw newSiddhiParserException(ctx, "'#' cannot be used, because Windows can't be defined as InnerStream!");
}
WindowDefinition windowDefinition = WindowDefinition.id(source.streamId);
List<SiddhiQLParser.Attribute_nameContext> attribute_names = ctx.attribute_name();
List<SiddhiQLParser.Attribute_typeContext> attribute_types = ctx.attribute_type();
for (int i = 0; i < attribute_names.size(); i++) {
SiddhiQLParser.Attribute_nameContext attributeNameContext = attribute_names.get(i);
SiddhiQLParser.Attribute_typeContext attributeTypeContext = attribute_types.get(i);
windowDefinition.attribute((String) visit(attributeNameContext), (Attribute.Type) visit(attributeTypeContext));
}
for (SiddhiQLParser.AnnotationContext annotationContext : ctx.annotation()) {
windowDefinition.annotation((Annotation) visit(annotationContext));
}
AttributeFunction attributeFunction = (AttributeFunction) visit(ctx.function_operation());
Window window = new Window(attributeFunction.getNamespace(), attributeFunction.getName(), attributeFunction.getParameters());
windowDefinition.window(window);
// Optional output event type
if (ctx.output_event_type() != null) {
windowDefinition.setOutputEventType((OutputStream.OutputEventType) visit(ctx.output_event_type()));
}
populateQueryContext(windowDefinition, ctx);
return windowDefinition;
}
use of org.ballerinalang.siddhi.query.api.execution.query.input.handler.Window 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);
}
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