use of io.siddhi.core.event.stream.MetaStreamEvent 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);
}
use of io.siddhi.core.event.stream.MetaStreamEvent in project siddhi by wso2.
the class ExpressionParser method parseExpression.
/**
* Parse the given expression and create the appropriate Executor by recursively traversing the expression
*
* @param expression Expression to be parsed
* @param metaEvent Meta Event
* @param currentState Current state number
* @param tableMap Event Table Map
* @param executorList List to hold VariableExpressionExecutors to update after query parsing
* @param groupBy is for groupBy expression
* @param defaultStreamEventIndex Default StreamEvent Index
* @param processingMode processing mode of the query
* @param outputExpectsExpiredEvents is expired events sent as output
* @param siddhiQueryContext current siddhi query context
* @return ExpressionExecutor
*/
public static ExpressionExecutor parseExpression(Expression expression, MetaComplexEvent metaEvent, int currentState, Map<String, Table> tableMap, List<VariableExpressionExecutor> executorList, boolean groupBy, int defaultStreamEventIndex, ProcessingMode processingMode, boolean outputExpectsExpiredEvents, SiddhiQueryContext siddhiQueryContext) {
try {
if (expression instanceof And) {
return new AndConditionExpressionExecutor(parseExpression(((And) expression).getLeftExpression(), metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext), parseExpression(((And) expression).getRightExpression(), metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext));
} else if (expression instanceof Or) {
return new OrConditionExpressionExecutor(parseExpression(((Or) expression).getLeftExpression(), metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext), parseExpression(((Or) expression).getRightExpression(), metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext));
} else if (expression instanceof Not) {
return new NotConditionExpressionExecutor(parseExpression(((Not) expression).getExpression(), metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext));
} else if (expression instanceof Compare) {
if (((Compare) expression).getOperator() == Compare.Operator.EQUAL) {
Expression leftExpression = ((Compare) expression).getLeftExpression();
Expression rightExpression = ((Compare) expression).getRightExpression();
ExpressionExecutor leftExpressionExecutor = parseExpression(leftExpression, metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext);
ExpressionExecutor rightExpressionExecutor = parseExpression(rightExpression, metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext);
return parseEqualCompare(leftExpressionExecutor, rightExpressionExecutor);
} else if (((Compare) expression).getOperator() == Compare.Operator.NOT_EQUAL) {
return parseNotEqualCompare(parseExpression(((Compare) expression).getLeftExpression(), metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext), parseExpression(((Compare) expression).getRightExpression(), metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext));
} else if (((Compare) expression).getOperator() == Compare.Operator.GREATER_THAN) {
return parseGreaterThanCompare(parseExpression(((Compare) expression).getLeftExpression(), metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext), parseExpression(((Compare) expression).getRightExpression(), metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext));
} else if (((Compare) expression).getOperator() == Compare.Operator.GREATER_THAN_EQUAL) {
return parseGreaterThanEqualCompare(parseExpression(((Compare) expression).getLeftExpression(), metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext), parseExpression(((Compare) expression).getRightExpression(), metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext));
} else if (((Compare) expression).getOperator() == Compare.Operator.LESS_THAN) {
return parseLessThanCompare(parseExpression(((Compare) expression).getLeftExpression(), metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext), parseExpression(((Compare) expression).getRightExpression(), metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext));
} else if (((Compare) expression).getOperator() == Compare.Operator.LESS_THAN_EQUAL) {
return parseLessThanEqualCompare(parseExpression(((Compare) expression).getLeftExpression(), metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext), parseExpression(((Compare) expression).getRightExpression(), metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext));
}
} else if (expression instanceof Constant) {
if (expression instanceof BoolConstant) {
return new ConstantExpressionExecutor(((BoolConstant) expression).getValue(), Attribute.Type.BOOL);
} else if (expression instanceof StringConstant) {
return new ConstantExpressionExecutor(((StringConstant) expression).getValue(), Attribute.Type.STRING);
} else if (expression instanceof IntConstant) {
return new ConstantExpressionExecutor(((IntConstant) expression).getValue(), Attribute.Type.INT);
} else if (expression instanceof LongConstant) {
return new ConstantExpressionExecutor(((LongConstant) expression).getValue(), Attribute.Type.LONG);
} else if (expression instanceof FloatConstant) {
return new ConstantExpressionExecutor(((FloatConstant) expression).getValue(), Attribute.Type.FLOAT);
} else if (expression instanceof DoubleConstant) {
return new ConstantExpressionExecutor(((DoubleConstant) expression).getValue(), Attribute.Type.DOUBLE);
}
} else if (expression instanceof Variable) {
return parseVariable((Variable) expression, metaEvent, currentState, executorList, defaultStreamEventIndex, siddhiQueryContext);
} else if (expression instanceof Multiply) {
ExpressionExecutor left = parseExpression(((Multiply) expression).getLeftValue(), metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext);
ExpressionExecutor right = parseExpression(((Multiply) expression).getRightValue(), metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext);
Attribute.Type type = parseArithmeticOperationResultType(left, right);
switch(type) {
case INT:
return new MultiplyExpressionExecutorInt(left, right);
case LONG:
return new MultiplyExpressionExecutorLong(left, right);
case FLOAT:
return new MultiplyExpressionExecutorFloat(left, right);
case DOUBLE:
return new MultiplyExpressionExecutorDouble(left, right);
// Will not happen. Handled in parseArithmeticOperationResultType()
default:
}
} else if (expression instanceof Add) {
ExpressionExecutor left = parseExpression(((Add) expression).getLeftValue(), metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext);
ExpressionExecutor right = parseExpression(((Add) expression).getRightValue(), metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext);
Attribute.Type type = parseArithmeticOperationResultType(left, right);
switch(type) {
case INT:
return new AddExpressionExecutorInt(left, right);
case LONG:
return new AddExpressionExecutorLong(left, right);
case FLOAT:
return new AddExpressionExecutorFloat(left, right);
case DOUBLE:
return new AddExpressionExecutorDouble(left, right);
// Will not happen. Handled in parseArithmeticOperationResultType()
default:
}
} else if (expression instanceof Subtract) {
ExpressionExecutor left = parseExpression(((Subtract) expression).getLeftValue(), metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext);
ExpressionExecutor right = parseExpression(((Subtract) expression).getRightValue(), metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext);
Attribute.Type type = parseArithmeticOperationResultType(left, right);
switch(type) {
case INT:
return new SubtractExpressionExecutorInt(left, right);
case LONG:
return new SubtractExpressionExecutorLong(left, right);
case FLOAT:
return new SubtractExpressionExecutorFloat(left, right);
case DOUBLE:
return new SubtractExpressionExecutorDouble(left, right);
// Will not happen. Handled in parseArithmeticOperationResultType()
default:
}
} else if (expression instanceof Mod) {
ExpressionExecutor left = parseExpression(((Mod) expression).getLeftValue(), metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext);
ExpressionExecutor right = parseExpression(((Mod) expression).getRightValue(), metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext);
Attribute.Type type = parseArithmeticOperationResultType(left, right);
switch(type) {
case INT:
return new ModExpressionExecutorInt(left, right);
case LONG:
return new ModExpressionExecutorLong(left, right);
case FLOAT:
return new ModExpressionExecutorFloat(left, right);
case DOUBLE:
return new ModExpressionExecutorDouble(left, right);
// Will not happen. Handled in parseArithmeticOperationResultType()
default:
}
} else if (expression instanceof Divide) {
ExpressionExecutor left = parseExpression(((Divide) expression).getLeftValue(), metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext);
ExpressionExecutor right = parseExpression(((Divide) expression).getRightValue(), metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext);
Attribute.Type type = parseArithmeticOperationResultType(left, right);
switch(type) {
case INT:
return new DivideExpressionExecutorInt(left, right);
case LONG:
return new DivideExpressionExecutorLong(left, right);
case FLOAT:
return new DivideExpressionExecutorFloat(left, right);
case DOUBLE:
return new DivideExpressionExecutorDouble(left, right);
// Will not happen. Handled in parseArithmeticOperationResultType()
default:
}
} else if (expression instanceof AttributeFunction) {
// extensions
Object executor;
try {
if ((siddhiQueryContext.getSiddhiAppContext().isFunctionExist(((AttributeFunction) expression).getName())) && (((AttributeFunction) expression).getNamespace()).isEmpty()) {
executor = new ScriptFunctionExecutor(((AttributeFunction) expression).getName());
} else {
executor = SiddhiClassLoader.loadExtensionImplementation((AttributeFunction) expression, FunctionExecutorExtensionHolder.getInstance(siddhiQueryContext.getSiddhiAppContext()));
}
} catch (SiddhiAppCreationException ex) {
try {
executor = SiddhiClassLoader.loadExtensionImplementation((AttributeFunction) expression, AttributeAggregatorExtensionHolder.getInstance(siddhiQueryContext.getSiddhiAppContext()));
} catch (SiddhiAppCreationException e) {
throw new ExtensionNotFoundException("'" + ((AttributeFunction) expression).getName() + "' is" + " neither a function extension nor an aggregated attribute extension", expression.getQueryContextStartIndex(), expression.getQueryContextEndIndex());
}
}
ConfigReader configReader = siddhiQueryContext.getSiddhiContext().getConfigManager().generateConfigReader(((AttributeFunction) expression).getNamespace(), ((AttributeFunction) expression).getName());
if (executor instanceof FunctionExecutor) {
FunctionExecutor expressionExecutor = (FunctionExecutor) executor;
Expression[] innerExpressions = ((AttributeFunction) expression).getParameters();
ExpressionExecutor[] innerExpressionExecutors = parseInnerExpression(innerExpressions, metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext);
expressionExecutor.initExecutor(innerExpressionExecutors, processingMode, configReader, groupBy, siddhiQueryContext);
if (expressionExecutor.getReturnType() == Attribute.Type.BOOL) {
return new BoolConditionExpressionExecutor(expressionExecutor);
}
return expressionExecutor;
} else {
AttributeAggregatorExecutor attributeAggregatorExecutor = (AttributeAggregatorExecutor) executor;
Expression[] innerExpressions = ((AttributeFunction) expression).getParameters();
ExpressionExecutor[] innerExpressionExecutors = parseInnerExpression(innerExpressions, metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext);
attributeAggregatorExecutor.initAggregator(innerExpressionExecutors, processingMode, outputExpectsExpiredEvents, configReader, groupBy, siddhiQueryContext);
// AbstractAggregationAttributeExecutor aggregationAttributeProcessor;
// if (groupBy) {
// aggregationAttributeProcessor = new GroupByAggregationAttributeExecutor(attributeAggregatorExecutor,
// innerExpressionExecutors, configReader, siddhiQueryContext);
// } else {
// aggregationAttributeProcessor = new AggregationAttributeExecutor(attributeAggregatorExecutor,
// innerExpressionExecutors, siddhiQueryContext);
// }
SelectorParser.getContainsAggregatorThreadLocal().set("true");
return attributeAggregatorExecutor;
}
} else if (expression instanceof In) {
Table table = tableMap.get(((In) expression).getSourceId());
MatchingMetaInfoHolder matchingMetaInfoHolder = MatcherParser.constructMatchingMetaStateHolder(metaEvent, defaultStreamEventIndex, table.getTableDefinition(), defaultStreamEventIndex);
CompiledCondition compiledCondition = table.compileCondition(((In) expression).getExpression(), matchingMetaInfoHolder, executorList, tableMap, siddhiQueryContext);
return new InConditionExpressionExecutor(table, compiledCondition, matchingMetaInfoHolder.getMetaStateEvent().getMetaStreamEvents().length, metaEvent instanceof StateEvent, 0);
} else if (expression instanceof IsNull) {
IsNull isNull = (IsNull) expression;
if (isNull.getExpression() != null) {
ExpressionExecutor innerExpressionExecutor = parseExpression(isNull.getExpression(), metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext);
return new IsNullConditionExpressionExecutor(innerExpressionExecutor);
} else {
String streamId = isNull.getStreamId();
Integer streamIndex = isNull.getStreamIndex();
if (metaEvent instanceof MetaStateEvent) {
int[] eventPosition = new int[2];
if (streamIndex != null) {
if (streamIndex <= SiddhiConstants.LAST) {
eventPosition[SiddhiConstants.STREAM_EVENT_INDEX_IN_CHAIN] = streamIndex + 1;
} else {
eventPosition[SiddhiConstants.STREAM_EVENT_INDEX_IN_CHAIN] = streamIndex;
}
} else {
eventPosition[SiddhiConstants.STREAM_EVENT_INDEX_IN_CHAIN] = defaultStreamEventIndex;
}
eventPosition[SiddhiConstants.STREAM_EVENT_CHAIN_INDEX] = SiddhiConstants.UNKNOWN_STATE;
MetaStateEvent metaStateEvent = (MetaStateEvent) metaEvent;
if (streamId == null) {
throw new SiddhiAppCreationException("IsNull does not support streamId being null", expression.getQueryContextStartIndex(), expression.getQueryContextEndIndex());
} else {
MetaStreamEvent[] metaStreamEvents = metaStateEvent.getMetaStreamEvents();
for (int i = 0, metaStreamEventsLength = metaStreamEvents.length; i < metaStreamEventsLength; i++) {
MetaStreamEvent metaStreamEvent = metaStreamEvents[i];
AbstractDefinition definition = metaStreamEvent.getLastInputDefinition();
if (metaStreamEvent.getInputReferenceId() == null) {
if (definition.getId().equals(streamId)) {
eventPosition[SiddhiConstants.STREAM_EVENT_CHAIN_INDEX] = i;
break;
}
} else {
if (metaStreamEvent.getInputReferenceId().equals(streamId)) {
eventPosition[SiddhiConstants.STREAM_EVENT_CHAIN_INDEX] = i;
if (currentState > -1 && metaStreamEvents[currentState].getInputReferenceId() != null && streamIndex != null && streamIndex <= SiddhiConstants.LAST) {
if (streamId.equals(metaStreamEvents[currentState].getInputReferenceId())) {
eventPosition[SiddhiConstants.STREAM_EVENT_INDEX_IN_CHAIN] = streamIndex;
}
}
break;
}
}
}
}
return new IsNullStreamConditionExpressionExecutor(eventPosition);
} else {
return new IsNullStreamConditionExpressionExecutor(null);
}
}
}
throw new UnsupportedOperationException(expression.toString() + " not supported!");
} catch (Throwable t) {
ExceptionUtil.populateQueryContext(t, expression, siddhiQueryContext.getSiddhiAppContext(), siddhiQueryContext);
throw t;
}
}
use of io.siddhi.core.event.stream.MetaStreamEvent in project siddhi by wso2.
the class ExpressionParser method parseVariable.
/**
* Parse and validate the given Siddhi variable and return a VariableExpressionExecutor
*
* @param variable Variable to be parsed
* @param metaEvent Meta event used to collect execution info of stream associated with query
* @param currentState Current State Number
* @param executorList List to hold VariableExpressionExecutors to update after query parsing @return
* @param siddhiQueryContext Siddhi Query Context
* @return VariableExpressionExecutor representing given variable
*/
private static ExpressionExecutor parseVariable(Variable variable, MetaComplexEvent metaEvent, int currentState, List<VariableExpressionExecutor> executorList, int defaultStreamEventIndex, SiddhiQueryContext siddhiQueryContext) {
String attributeName = variable.getAttributeName();
int[] eventPosition = new int[2];
if (variable.getStreamIndex() != null) {
if (variable.getStreamIndex() <= SiddhiConstants.LAST) {
eventPosition[SiddhiConstants.STREAM_EVENT_INDEX_IN_CHAIN] = variable.getStreamIndex() + 1;
} else {
eventPosition[SiddhiConstants.STREAM_EVENT_INDEX_IN_CHAIN] = variable.getStreamIndex();
}
} else {
eventPosition[SiddhiConstants.STREAM_EVENT_INDEX_IN_CHAIN] = defaultStreamEventIndex;
}
eventPosition[SiddhiConstants.STREAM_EVENT_CHAIN_INDEX] = SiddhiConstants.UNKNOWN_STATE;
if (metaEvent instanceof MetaStreamEvent) {
MetaStreamEvent metaStreamEvent = (MetaStreamEvent) metaEvent;
AbstractDefinition abstractDefinition;
Attribute.Type type;
if (currentState == SiddhiConstants.HAVING_STATE) {
abstractDefinition = metaStreamEvent.getOutputStreamDefinition();
type = abstractDefinition.getAttributeType(attributeName);
eventPosition[SiddhiConstants.STREAM_EVENT_CHAIN_INDEX] = SiddhiConstants.HAVING_STATE;
} else {
abstractDefinition = metaStreamEvent.getLastInputDefinition();
type = abstractDefinition.getAttributeType(attributeName);
((MetaStreamEvent) metaEvent).addData(new Attribute(attributeName, type));
}
if (variable.getStreamId() != null && !variable.getStreamId().equals(abstractDefinition.getId())) {
throw new SiddhiAppCreationException("Id '" + variable.getStreamId() + "' not defined within the " + "current scope", variable, siddhiQueryContext.getSiddhiAppContext());
}
VariableExpressionExecutor variableExpressionExecutor = new VariableExpressionExecutor(new Attribute(attributeName, type), eventPosition[SiddhiConstants.STREAM_EVENT_CHAIN_INDEX], eventPosition[SiddhiConstants.STREAM_EVENT_INDEX_IN_CHAIN]);
if (((MetaStreamEvent) metaEvent).getEventType() != MetaStreamEvent.EventType.DEFAULT) {
variableExpressionExecutor.getPosition()[SiddhiConstants.STREAM_ATTRIBUTE_TYPE_INDEX] = SiddhiConstants.OUTPUT_DATA_INDEX;
variableExpressionExecutor.getPosition()[SiddhiConstants.STREAM_ATTRIBUTE_INDEX_IN_TYPE] = abstractDefinition.getAttributePosition(variableExpressionExecutor.getAttribute().getName());
}
if (executorList != null) {
executorList.add(variableExpressionExecutor);
}
return variableExpressionExecutor;
} else {
MetaStateEvent metaStateEvent = (MetaStateEvent) metaEvent;
Attribute.Type type = null;
AbstractDefinition definition = null;
String firstInput = null;
boolean multiValue = false;
if (variable.getStreamId() == null) {
MetaStreamEvent[] metaStreamEvents = metaStateEvent.getMetaStreamEvents();
if (currentState == SiddhiConstants.HAVING_STATE) {
definition = metaStateEvent.getOutputStreamDefinition();
try {
type = definition.getAttributeType(attributeName);
eventPosition[SiddhiConstants.STREAM_EVENT_CHAIN_INDEX] = SiddhiConstants.HAVING_STATE;
} catch (AttributeNotExistException e) {
currentState = SiddhiConstants.UNKNOWN_STATE;
}
}
if (currentState == SiddhiConstants.UNKNOWN_STATE) {
for (int i = 0; i < metaStreamEvents.length; i++) {
MetaStreamEvent metaStreamEvent = metaStreamEvents[i];
definition = metaStreamEvent.getLastInputDefinition();
if (type == null) {
try {
type = definition.getAttributeType(attributeName);
firstInput = "Input Stream: " + definition.getId() + " with " + "reference: " + metaStreamEvent.getInputReferenceId();
eventPosition[SiddhiConstants.STREAM_EVENT_CHAIN_INDEX] = i;
} catch (AttributeNotExistException e) {
// do nothing
}
} else {
try {
definition.getAttributeType(attributeName);
throw new SiddhiAppValidationException(firstInput + " and Input Stream: " + definition.getId() + " with " + "reference: " + metaStreamEvent.getInputReferenceId() + " contains attribute " + "with same" + " name '" + attributeName + "'");
} catch (AttributeNotExistException e) {
// do nothing as its expected
}
}
}
} else if (currentState >= 0) {
MetaStreamEvent metaStreamEvent = metaStreamEvents[currentState];
definition = metaStreamEvent.getLastInputDefinition();
try {
type = definition.getAttributeType(attributeName);
eventPosition[SiddhiConstants.STREAM_EVENT_CHAIN_INDEX] = currentState;
} catch (AttributeNotExistException e) {
ExpressionExecutor functionExecutor = constructEventExpressionExecutor(variable, currentState, siddhiQueryContext, eventPosition, metaStateEvent);
if (functionExecutor != null) {
return functionExecutor;
}
throw new SiddhiAppValidationException(e.getMessageWithOutContext() + " Input stream '" + definition.getId() + "' with reference '" + metaStreamEvent.getInputReferenceId() + "' for attribute '" + variable.getAttributeName() + "'", e, e.getQueryContextStartIndex(), e.getQueryContextEndIndex());
}
}
} else {
MetaStreamEvent[] metaStreamEvents = metaStateEvent.getMetaStreamEvents();
for (int i = 0, metaStreamEventsLength = metaStreamEvents.length; i < metaStreamEventsLength; i++) {
MetaStreamEvent metaStreamEvent = metaStreamEvents[i];
definition = metaStreamEvent.getLastInputDefinition();
if (metaStreamEvent.getInputReferenceId() == null) {
if (definition.getId().equals(variable.getStreamId())) {
type = definition.getAttributeType(attributeName);
eventPosition[SiddhiConstants.STREAM_EVENT_CHAIN_INDEX] = i;
break;
}
} else {
if (metaStreamEvent.getInputReferenceId().equals(variable.getStreamId())) {
type = definition.getAttributeType(attributeName);
eventPosition[SiddhiConstants.STREAM_EVENT_CHAIN_INDEX] = i;
if (currentState > -1 && metaStreamEvents[currentState].getInputReferenceId() != null && variable.getStreamIndex() != null && variable.getStreamIndex() <= SiddhiConstants.LAST) {
if (variable.getStreamId().equals(metaStreamEvents[currentState].getInputReferenceId())) {
eventPosition[SiddhiConstants.STREAM_EVENT_INDEX_IN_CHAIN] = variable.getStreamIndex();
}
} else if (currentState == SiddhiConstants.UNKNOWN_STATE && variable.getStreamIndex() == null) {
multiValue = metaStreamEvent.isMultiValue();
}
break;
}
}
}
}
if (eventPosition[SiddhiConstants.STREAM_EVENT_CHAIN_INDEX] == SiddhiConstants.UNKNOWN_STATE) {
if (variable.getStreamId() == null) {
ExpressionExecutor functionExecutor = constructEventExpressionExecutor(variable, currentState, siddhiQueryContext, eventPosition, metaStateEvent);
if (functionExecutor != null) {
return functionExecutor;
}
throw new SiddhiAppValidationException("No matching stream reference found for attribute '" + variable.getAttributeName() + "'");
} else {
throw new SiddhiAppValidationException("Stream with reference '" + variable.getStreamId() + "' not found for attribute '" + variable.getAttributeName() + "'");
}
}
VariableExpressionExecutor variableExpressionExecutor = new VariableExpressionExecutor(new Attribute(attributeName, type), eventPosition[SiddhiConstants.STREAM_EVENT_CHAIN_INDEX], eventPosition[SiddhiConstants.STREAM_EVENT_INDEX_IN_CHAIN]);
if (eventPosition[SiddhiConstants.STREAM_EVENT_CHAIN_INDEX] != SiddhiConstants.HAVING_STATE) {
MetaStreamEvent metaStreamEvent = ((MetaStateEvent) metaEvent).getMetaStreamEvent(eventPosition[SiddhiConstants.STREAM_EVENT_CHAIN_INDEX]);
if (metaStreamEvent.getEventType() != MetaStreamEvent.EventType.DEFAULT) {
variableExpressionExecutor.getPosition()[SiddhiConstants.STREAM_ATTRIBUTE_TYPE_INDEX] = SiddhiConstants.OUTPUT_DATA_INDEX;
variableExpressionExecutor.getPosition()[SiddhiConstants.STREAM_ATTRIBUTE_INDEX_IN_TYPE] = metaStreamEvent.getLastInputDefinition().getAttributePosition(variableExpressionExecutor.getAttribute().getName());
for (Attribute attribute : metaStreamEvent.getLastInputDefinition().getAttributeList()) {
metaStreamEvent.addOutputData(new Attribute(attribute.getName(), attribute.getType()));
}
}
metaStreamEvent.addData(new Attribute(attributeName, type));
}
if (executorList != null) {
executorList.add(variableExpressionExecutor);
}
if (multiValue) {
FunctionExecutor functionExecutor = new MultiValueVariableFunctionExecutor();
ExpressionExecutor[] innerExpressionExecutors = new ExpressionExecutor[] { variableExpressionExecutor };
functionExecutor.initExecutor(innerExpressionExecutors, ProcessingMode.BATCH, null, false, siddhiQueryContext);
return functionExecutor;
}
return variableExpressionExecutor;
}
}
use of io.siddhi.core.event.stream.MetaStreamEvent in project siddhi by wso2.
the class ExpressionParser method parseInnerExpression.
/**
* Parse the set of inner expression of AttributeFunctionExtensions and handling all (*) cases
*
* @param innerExpressions InnerExpressions to be parsed
* @param metaEvent Meta Event
* @param currentState Current state number
* @param tableMap Event Table Map
* @param executorList List to hold VariableExpressionExecutors to update after query parsing @return
* @param groupBy is for groupBy expression
* @param defaultStreamEventIndex Default StreamEvent Index
* @param processingMode processing mode of the query
* @param outputExpectsExpiredEvents is expired events sent as output
* @param siddhiQueryContext current siddhi query context
* @return List of expressionExecutors
*/
private static ExpressionExecutor[] parseInnerExpression(Expression[] innerExpressions, MetaComplexEvent metaEvent, int currentState, Map<String, Table> tableMap, List<VariableExpressionExecutor> executorList, boolean groupBy, int defaultStreamEventIndex, ProcessingMode processingMode, boolean outputExpectsExpiredEvents, SiddhiQueryContext siddhiQueryContext) {
ExpressionExecutor[] innerExpressionExecutors;
if (innerExpressions != null) {
if (innerExpressions.length > 0) {
innerExpressionExecutors = new ExpressionExecutor[innerExpressions.length];
for (int i = 0, innerExpressionsLength = innerExpressions.length; i < innerExpressionsLength; i++) {
innerExpressionExecutors[i] = parseExpression(innerExpressions[i], metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext);
}
} else {
List<Expression> outputAttributes = new ArrayList<Expression>();
if (metaEvent instanceof MetaStreamEvent) {
List<Attribute> attributeList = ((MetaStreamEvent) metaEvent).getLastInputDefinition().getAttributeList();
for (Attribute attribute : attributeList) {
outputAttributes.add(new Variable(attribute.getName()));
}
} else {
for (MetaStreamEvent metaStreamEvent : ((MetaStateEvent) metaEvent).getMetaStreamEvents()) {
List<Attribute> attributeList = metaStreamEvent.getLastInputDefinition().getAttributeList();
for (Attribute attribute : attributeList) {
Expression outputAttribute = new Variable(attribute.getName());
if (!outputAttributes.contains(outputAttribute)) {
outputAttributes.add(outputAttribute);
} else {
List<AbstractDefinition> definitions = new ArrayList<AbstractDefinition>();
for (MetaStreamEvent aMetaStreamEvent : ((MetaStateEvent) metaEvent).getMetaStreamEvents()) {
definitions.add(aMetaStreamEvent.getLastInputDefinition());
}
throw new DuplicateAttributeException("Duplicate attribute exist in streams " + definitions, attribute.getQueryContextStartIndex(), attribute.getQueryContextEndIndex());
}
}
}
}
innerExpressionExecutors = new ExpressionExecutor[outputAttributes.size()];
for (int i = 0, innerExpressionsLength = outputAttributes.size(); i < innerExpressionsLength; i++) {
innerExpressionExecutors[i] = parseExpression(outputAttributes.get(i), metaEvent, currentState, tableMap, executorList, groupBy, defaultStreamEventIndex, processingMode, outputExpectsExpiredEvents, siddhiQueryContext);
}
}
} else {
innerExpressionExecutors = new ExpressionExecutor[0];
}
return innerExpressionExecutors;
}
use of io.siddhi.core.event.stream.MetaStreamEvent in project siddhi by wso2.
the class OnDemandQueryParser method generateMatchingMetaInfoHolderForCacheTable.
public static MatchingMetaInfoHolder generateMatchingMetaInfoHolderForCacheTable(TableDefinition tableDefinition) {
MetaStateEvent metaStateEvent = new MetaStateEvent(1);
MetaStreamEvent metaStreamEvent = new MetaStreamEvent();
initMetaStreamEvent(metaStreamEvent, tableDefinition);
metaStateEvent.addEvent(metaStreamEvent);
MatchingMetaInfoHolder matchingMetaInfoHolder = new MatchingMetaInfoHolder(metaStateEvent, -1, 0, tableDefinition, tableDefinition, 0);
return matchingMetaInfoHolder;
}
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