use of org.wso2.siddhi.query.api.expression.Variable 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;
}
use of org.wso2.siddhi.query.api.expression.Variable in project siddhi by wso2.
the class ExternalTimeBatchWindowProcessor method init.
@Override
protected void init(ExpressionExecutor[] attributeExpressionExecutors, ConfigReader configReader, boolean outputExpectsExpiredEvents, SiddhiAppContext siddhiAppContext) {
this.outputExpectsExpiredEvents = outputExpectsExpiredEvents;
if (outputExpectsExpiredEvents) {
this.expiredEventChunk = new ComplexEventChunk<StreamEvent>(false);
this.storeExpiredEvents = true;
}
if (attributeExpressionExecutors.length >= 2 && attributeExpressionExecutors.length <= 5) {
if (!(attributeExpressionExecutors[0] instanceof VariableExpressionExecutor)) {
throw new SiddhiAppValidationException("ExternalTime window's 1st parameter timestamp should be a" + " variable, but found " + attributeExpressionExecutors[0].getClass());
}
if (attributeExpressionExecutors[0].getReturnType() != Attribute.Type.LONG) {
throw new SiddhiAppValidationException("ExternalTime window's 1st parameter timestamp should be " + "type long, but found " + attributeExpressionExecutors[0].getReturnType());
}
timestampExpressionExecutor = (VariableExpressionExecutor) attributeExpressionExecutors[0];
if (attributeExpressionExecutors[1].getReturnType() == Attribute.Type.INT) {
timeToKeep = (Integer) ((ConstantExpressionExecutor) attributeExpressionExecutors[1]).getValue();
} else if (attributeExpressionExecutors[1].getReturnType() == Attribute.Type.LONG) {
timeToKeep = (Long) ((ConstantExpressionExecutor) attributeExpressionExecutors[1]).getValue();
} else {
throw new SiddhiAppValidationException("ExternalTimeBatch window's 2nd parameter windowTime " + "should be either int or long, but found " + attributeExpressionExecutors[1].getReturnType());
}
if (attributeExpressionExecutors.length >= 3) {
isStartTimeEnabled = true;
if ((attributeExpressionExecutors[2] instanceof ConstantExpressionExecutor)) {
if (attributeExpressionExecutors[2].getReturnType() == Attribute.Type.INT) {
startTime = Integer.parseInt(String.valueOf(((ConstantExpressionExecutor) attributeExpressionExecutors[2]).getValue()));
} else if (attributeExpressionExecutors[2].getReturnType() == Attribute.Type.LONG) {
startTime = Long.parseLong(String.valueOf(((ConstantExpressionExecutor) attributeExpressionExecutors[2]).getValue()));
} else {
throw new SiddhiAppValidationException("ExternalTimeBatch window's 3rd parameter " + "startTime should either be a constant (of type int or long) or an attribute (of type" + " long), but found " + attributeExpressionExecutors[2].getReturnType());
}
} else if (attributeExpressionExecutors[2].getReturnType() != Attribute.Type.LONG) {
throw new SiddhiAppValidationException("ExternalTimeBatch window's 3rd parameter startTime " + "should either be a constant (of type int or long) or an attribute (of type long), but " + "found " + attributeExpressionExecutors[2].getReturnType());
} else {
startTimeAsVariable = attributeExpressionExecutors[2];
}
}
if (attributeExpressionExecutors.length >= 4) {
if (attributeExpressionExecutors[3].getReturnType() == Attribute.Type.INT) {
schedulerTimeout = Integer.parseInt(String.valueOf(((ConstantExpressionExecutor) attributeExpressionExecutors[3]).getValue()));
} else if (attributeExpressionExecutors[3].getReturnType() == Attribute.Type.LONG) {
schedulerTimeout = Long.parseLong(String.valueOf(((ConstantExpressionExecutor) attributeExpressionExecutors[3]).getValue()));
} else {
throw new SiddhiAppValidationException("ExternalTimeBatch window's 4th parameter timeout " + "should be either int or long, but found " + attributeExpressionExecutors[3].getReturnType());
}
}
if (attributeExpressionExecutors.length == 5) {
if (attributeExpressionExecutors[4].getReturnType() == Attribute.Type.BOOL) {
replaceTimestampWithBatchEndTime = Boolean.parseBoolean(String.valueOf(((ConstantExpressionExecutor) attributeExpressionExecutors[4]).getValue()));
} else {
throw new SiddhiAppValidationException("ExternalTimeBatch window's 5th parameter " + "replaceTimestampWithBatchEndTime should be bool, but found " + attributeExpressionExecutors[4].getReturnType());
}
}
} else {
throw new SiddhiAppValidationException("ExternalTimeBatch window should only have two to five " + "parameters (<long> timestamp, <int|long|time> windowTime, <long> startTime, <int|long|time> " + "timeout, <bool> replaceTimestampWithBatchEndTime), but found " + attributeExpressionExecutors.length + " input attributes");
}
if (schedulerTimeout > 0) {
if (expiredEventChunk == null) {
this.expiredEventChunk = new ComplexEventChunk<StreamEvent>(false);
}
}
}
use of org.wso2.siddhi.query.api.expression.Variable in project siddhi by wso2.
the class SortWindowProcessor method init.
@Override
protected void init(ExpressionExecutor[] attributeExpressionExecutors, ConfigReader configReader, boolean outputExpectsExpiredEvents, SiddhiAppContext siddhiAppContext) {
if (attributeExpressionExecutors[0].getReturnType() == Attribute.Type.INT) {
lengthToKeep = Integer.parseInt(String.valueOf(((ConstantExpressionExecutor) attributeExpressionExecutors[0]).getValue()));
} else {
throw new UnsupportedOperationException("The first parameter should be an integer");
}
parameterInfo = new ArrayList<Object[]>();
eventComparator = new EventComparator();
for (int i = 1, parametersLength = attributeExpressionExecutors.length; i < parametersLength; i++) {
if (!(attributeExpressionExecutors[i] instanceof VariableExpressionExecutor)) {
throw new UnsupportedOperationException("Required a variable, but found a string parameter");
} else {
ExpressionExecutor variableExpressionExecutor = attributeExpressionExecutors[i];
int order;
String nextParameter;
if (i + 1 < parametersLength && attributeExpressionExecutors[i + 1].getReturnType() == Attribute.Type.STRING) {
nextParameter = (String) ((ConstantExpressionExecutor) attributeExpressionExecutors[i + 1]).getValue();
if (nextParameter.equalsIgnoreCase(DESC)) {
order = -1;
i++;
} else if (nextParameter.equalsIgnoreCase(ASC)) {
order = 1;
i++;
} else {
throw new UnsupportedOperationException("Parameter string literals should only be \"asc\" or " + "\"desc\"");
}
} else {
// assigning the default order: "asc"
order = 1;
}
parameterInfo.add(new Object[] { variableExpressionExecutor, order });
}
}
}
use of org.wso2.siddhi.query.api.expression.Variable in project siddhi by wso2.
the class SiddhiQLBaseVisitorImpl method visitQuery_section.
/**
* {@inheritDoc}
* <p>The default implementation returns the result of calling
* {@link #visitChildren} on {@code ctx}.</p>
*
* @param ctx
*/
@Override
public Selector visitQuery_section(@NotNull SiddhiQLParser.Query_sectionContext ctx) {
// query_section
// :(SELECT ('*'| (output_attribute (',' output_attribute)* ))) group_by? having?
// ;
Selector selector = new Selector();
List<OutputAttribute> attributeList = new ArrayList<OutputAttribute>(ctx.output_attribute().size());
for (SiddhiQLParser.Output_attributeContext output_attributeContext : ctx.output_attribute()) {
attributeList.add((OutputAttribute) visit(output_attributeContext));
}
selector.addSelectionList(attributeList);
if (ctx.group_by() != null) {
selector.addGroupByList((List<Variable>) visit(ctx.group_by()));
}
if (ctx.having() != null) {
selector.having((Expression) visit(ctx.having()));
}
if (ctx.order_by() != null) {
selector.addOrderByList((List<OrderByAttribute>) visit(ctx.order_by()));
}
if (ctx.limit() != null) {
selector.limit((Constant) visit(ctx.limit()));
}
populateQueryContext(selector, ctx);
return selector;
}
use of org.wso2.siddhi.query.api.expression.Variable in project siddhi by wso2.
the class SiddhiQLBaseVisitorImpl method visitDefinition_aggregation.
@Override
public AggregationDefinition visitDefinition_aggregation(@NotNull SiddhiQLParser.Definition_aggregationContext ctx) {
// Read the name of the aggregation
String aggregationName = (String) visitAggregation_name(ctx.aggregation_name());
// Create the aggregation using the extracted aggregation name
AggregationDefinition aggregationDefinition = AggregationDefinition.id(aggregationName);
// Get all annotation and populate the aggregation
for (SiddhiQLParser.AnnotationContext annotationContext : ctx.annotation()) {
aggregationDefinition.annotation((Annotation) visit(annotationContext));
}
// Attach the input stream
BasicSingleInputStream basicSingleInputStream = (BasicSingleInputStream) visit(ctx.standard_stream());
aggregationDefinition.from(basicSingleInputStream);
// Extract the selector and attach it to the new aggregation
BasicSelector selector = (BasicSelector) visit(ctx.group_by_query_selection());
aggregationDefinition.select(selector);
// Get the variable (if available) and aggregate on that variable
if (ctx.attribute_reference() != null) {
Variable aggregatedBy = (Variable) visit(ctx.attribute_reference());
aggregationDefinition.aggregateBy(aggregatedBy);
}
// Extract the specified time-durations and attache it to the aggregation definition
TimePeriod timePeriod = (TimePeriod) visit(ctx.aggregation_time());
aggregationDefinition.every(timePeriod);
populateQueryContext(aggregationDefinition, ctx);
return aggregationDefinition;
}
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