public EventPropertyDescriptor getWritableProperty(String propertyName) {
if (writablePropertyDescriptors == null) {
initializeWriters();
}
Pair<EventPropertyDescriptor, ? extends EventPropertyWriter> pair =
propertyWriters.get(propertyName);
if (pair != null) {
return pair.getFirst();
}
Property property = PropertyParser.parse(propertyName, false);
if (property instanceof MappedProperty) {
EventPropertyWriter writer = getWriter(propertyName);
if (writer == null) {
return null;
}
MappedProperty mapProp = (MappedProperty) property;
return new EventPropertyDescriptor(
mapProp.getPropertyNameAtomic(), Object.class, null, false, true, false, true, false);
}
if (property instanceof IndexedProperty) {
EventPropertyWriter writer = getWriter(propertyName);
if (writer == null) {
return null;
}
IndexedProperty indexedProp = (IndexedProperty) property;
return new EventPropertyDescriptor(
indexedProp.getPropertyNameAtomic(), Object.class, null, true, false, true, false, false);
}
return null;
}
public EventBeanWriter getWriter(String[] properties) {
if (writablePropertyDescriptors == null) {
initializeWriters();
}
boolean allSimpleProps = true;
MapEventBeanPropertyWriter[] writers = new MapEventBeanPropertyWriter[properties.length];
for (int i = 0; i < properties.length; i++) {
Pair<EventPropertyDescriptor, MapEventBeanPropertyWriter> writerPair =
propertyWriters.get(properties[i]);
if (writerPair != null) {
writers[i] = writerPair.getSecond();
} else {
writers[i] = getWriter(properties[i]);
if (writers[i] == null) {
return null;
}
allSimpleProps = false;
}
}
if (allSimpleProps) {
return new MapEventBeanWriterSimpleProps(properties);
} else {
return new MapEventBeanWriterPerProp(writers);
}
}
public MapEventBeanPropertyWriter getWriter(String propertyName) {
if (writablePropertyDescriptors == null) {
initializeWriters();
}
Pair<EventPropertyDescriptor, MapEventBeanPropertyWriter> pair =
propertyWriters.get(propertyName);
if (pair != null) {
return pair.getSecond();
}
Property property = PropertyParser.parse(propertyName, false);
if (property instanceof MappedProperty) {
MappedProperty mapProp = (MappedProperty) property;
return new MapEventBeanPropertyWriterMapProp(
mapProp.getPropertyNameAtomic(), mapProp.getKey());
}
if (property instanceof IndexedProperty) {
IndexedProperty indexedProp = (IndexedProperty) property;
return new MapEventBeanPropertyWriterIndexedProp(
indexedProp.getPropertyNameAtomic(), indexedProp.getIndex());
}
return null;
}
private void handleEvent(EventBean theEvent, boolean isNew) {
Object groupByValuesKey = getGroupKey(theEvent);
// Get child views that belong to this group-by value combination
Object subViews = this.subViewsPerKey.get(groupByValuesKey);
// If this is a new group-by value, the list of subviews is null and we need to make clone
// sub-views
if (subViews == null) {
subViews = makeSubViews(this, propertyNames, groupByValuesKey, agentInstanceContext);
subViewsPerKey.put(groupByValuesKey, subViews);
}
// Construct a pair of lists to hold the events for the grouped value if not already there
Pair<Object, Object> pair = groupedEvents.get(subViews);
if (pair == null) {
pair = new Pair<Object, Object>(null, null);
groupedEvents.put(subViews, pair);
}
// Add event to a child view event list for later child update that includes new and old events
if (isNew) {
pair.setFirst(addUpgradeToDequeIfPopulated(pair.getFirst(), theEvent));
} else {
pair.setSecond(addUpgradeToDequeIfPopulated(pair.getSecond(), theEvent));
}
}
/**
* Adds configured variables to the variable service.
*
* @param variableService service to add to
* @param variables configured variables
*/
protected static void initVariables(
VariableService variableService,
Map<String, ConfigurationVariable> variables,
EngineImportService engineImportService) {
for (Map.Entry<String, ConfigurationVariable> entry : variables.entrySet()) {
try {
Pair<String, Boolean> arrayType =
JavaClassHelper.isGetArrayType(entry.getValue().getType());
variableService.createNewVariable(
null,
entry.getKey(),
arrayType.getFirst(),
entry.getValue().isConstant(),
arrayType.getSecond(),
false,
entry.getValue().getInitializationValue(),
engineImportService);
variableService.allocateVariableState(entry.getKey(), 0, null);
} catch (VariableExistsException e) {
throw new ConfigurationException("Error configuring variables: " + e.getMessage(), e);
} catch (VariableTypeException e) {
throw new ConfigurationException("Error configuring variables: " + e.getMessage(), e);
}
}
}
public void testGetPropertyNameEscaped() throws Exception {
final String PROPERTY = "a\\.b\\.c";
Pair<Tree, CommonTokenStream> parsed = SupportParserHelper.parseEventProperty(PROPERTY);
Tree propertyNameExprNode = parsed.getFirst();
ASTUtil.dumpAST(propertyNameExprNode);
String propertyName = ASTFilterSpecHelper.getPropertyName(propertyNameExprNode, 0);
assertEquals(PROPERTY, propertyName);
}
public EventPropertyDescriptor getWritableProperty(String propertyName) {
if (writableProperties == null) {
initializeWriters();
}
Pair<EventPropertyDescriptor, EventPropertyWriter> pair = writers.get(propertyName);
if (pair == null) {
return null;
}
return pair.getFirst();
}
public void testGetPropertyName() throws Exception {
final String PROPERTY = "a('aa').b[1].c";
// Should parse and result in the exact same property name
Pair<Tree, CommonTokenStream> parsed = SupportParserHelper.parseEventProperty(PROPERTY);
Tree propertyNameExprNode = parsed.getFirst();
ASTUtil.dumpAST(propertyNameExprNode);
String propertyName = ASTFilterSpecHelper.getPropertyName(propertyNameExprNode, 0);
assertEquals(PROPERTY, propertyName);
// Try AST with tokens separated, same property name
parsed = SupportParserHelper.parseEventProperty("a( 'aa' ). b [ 1 ] . c");
propertyNameExprNode = parsed.getFirst();
propertyName = ASTFilterSpecHelper.getPropertyName(propertyNameExprNode, 0);
assertEquals(PROPERTY, propertyName);
}
public Pair<IndexMultiKey, EventTableAndNamePair> findTable(
Set<String> keyPropertyNames,
Set<String> rangePropertyNames,
List<IndexHintInstruction> optionalIndexHintInstructions) {
Pair<IndexMultiKey, EventTableIndexEntryBase> pair =
EventTableIndexUtil.findIndexBestAvailable(
tableIndexesRefCount,
keyPropertyNames,
rangePropertyNames,
optionalIndexHintInstructions);
if (pair == null) {
return null;
}
EventTable tableFound = ((EventTableIndexRepositoryEntry) pair.getSecond()).getTable();
return new Pair<IndexMultiKey, EventTableAndNamePair>(
pair.getFirst(),
new EventTableAndNamePair(tableFound, pair.getSecond().getOptionalIndexName()));
}
/**
* Close resources.
*
* @param pair is the resources to close.
*/
protected static void close(Pair<Connection, PreparedStatement> pair) {
log.info(".close Closing statement and connection");
try {
pair.getSecond().close();
} catch (SQLException ex) {
try {
pair.getFirst().close();
} catch (SQLException e) {
log.error("Error closing JDBC connection:" + e.getMessage(), e);
}
throw new EPException("Error closing statement", ex);
}
try {
pair.getFirst().close();
} catch (SQLException ex) {
throw new EPException("Error closing statement", ex);
}
}
public List<EventBean> poll(Object[] lookupValues) {
List<EventBean> result;
try {
result = execute(resources.getSecond(), lookupValues);
} catch (EPException ex) {
connectionCache.doneWith(resources);
throw ex;
}
return result;
}
public void addVariable(
String variableName, String type, Object initializationValue, boolean constant)
throws ConfigurationException {
try {
Pair<String, Boolean> arrayType = JavaClassHelper.isGetArrayType(type);
variableService.createNewVariable(
variableName,
arrayType.getFirst(),
initializationValue,
constant,
arrayType.getSecond(),
null,
engineImportService);
statementVariableRef.addConfiguredVariable(variableName);
} catch (VariableExistsException e) {
throw new ConfigurationException("Error creating variable: " + e.getMessage(), e);
} catch (VariableTypeException e) {
throw new ConfigurationException("Error creating variable: " + e.getMessage(), e);
}
}
public Pair<Class, String> resolveSingleRow(String name)
throws EngineImportException, EngineImportUndefinedException {
Pair<String, String> pair = singleRowFunctions.get(name);
if (pair == null) {
pair = singleRowFunctions.get(name.toLowerCase());
}
if (pair == null) {
throw new EngineImportUndefinedException("A function named '" + name + "' is not defined");
}
Class clazz;
try {
ClassLoader cl = Thread.currentThread().getContextClassLoader();
clazz = Class.forName(pair.getFirst(), true, cl);
} catch (ClassNotFoundException ex) {
throw new EngineImportException(
"Could not load single-row function class by name '" + pair.getFirst() + "'", ex);
}
return new Pair<Class, String>(clazz, pair.getSecond());
}
public TableMetadata(
String tableName,
String eplExpression,
String statementName,
Class[] keyTypes,
Map<String, TableMetadataColumn> tableColumns,
TableStateRowFactory rowFactory,
int numberMethodAggregations,
StatementResourceService createTableResources,
String contextName,
ObjectArrayEventType internalEventType,
ObjectArrayEventType publicEventType,
TableMetadataInternalEventToPublic eventToPublic,
boolean queryPlanLogging,
String createTableStatementName)
throws ExprValidationException {
this.tableName = tableName;
this.eplExpression = eplExpression;
this.statementName = statementName;
this.keyTypes = keyTypes;
this.tableColumns = tableColumns;
this.rowFactory = rowFactory;
this.numberMethodAggregations = numberMethodAggregations;
this.createTableResources = createTableResources;
this.contextName = contextName;
this.internalEventType = internalEventType;
this.publicEventType = publicEventType;
this.eventToPublic = eventToPublic;
this.queryPlanLogging = queryPlanLogging;
if (keyTypes.length > 0) {
Pair<int[], IndexMultiKey> pair =
TableServiceUtil.getIndexMultikeyForKeys(tableColumns, internalEventType);
eventTableIndexMetadataRepo.addIndex(
true, pair.getSecond(), tableName, createTableStatementName, true);
tableRowKeyFactory = new TableRowKeyFactory(pair.getFirst());
}
}
public void validateAddExplicitIndex(
boolean unique,
String indexName,
List<CreateIndexItem> columns,
EventType eventType,
Iterable<EventBean> dataWindowContents)
throws ExprValidationException {
if (explicitIndexes.containsKey(indexName)) {
throw new ExprValidationException("Index by name '" + indexName + "' already exists");
}
EventTableCreateIndexDesc desc =
EventTableIndexUtil.validateCompileExplicitIndex(unique, columns, eventType);
Pair<IndexMultiKey, EventTableAndNamePair> pair =
addExplicitIndexOrReuse(
unique,
desc.getHashProps(),
desc.getBtreeProps(),
dataWindowContents,
eventType,
indexName);
explicitIndexes.put(indexName, pair.getSecond().getEventTable());
}
public void testNestedPojo() {
Pair<String[], Object[]> pair = getTestDefTwo();
EPServiceProvider epService =
getEngineInitialized("NestedObjectArr", pair.getFirst(), pair.getSecond());
String statementText =
"select "
+ "simple, object, nodefmap, map, "
+ "object.id as a1, nodefmap.key1? as a2, nodefmap.key2? as a3, nodefmap.key3?.key4 as a4, "
+ "map.objectOne as b1, map.simpleOne as b2, map.nodefmapOne.key2? as b3, map.mapOne.simpleTwo? as b4, "
+ "map.objectOne.indexed[1] as c1, map.objectOne.nested.nestedValue as c2,"
+ "map.mapOne.simpleTwo as d1, map.mapOne.objectTwo as d2, map.mapOne.nodefmapTwo as d3, "
+ "map.mapOne.mapTwo as e1, map.mapOne.mapTwo.simpleThree as e2, map.mapOne.mapTwo.objectThree as e3, "
+ "map.mapOne.objectTwo.array[1].mapped('1ma').value as f1, map.mapOne.mapTwo.objectThree.id as f2"
+ " from NestedObjectArr";
EPStatement statement = epService.getEPAdministrator().createEPL(statementText);
SupportUpdateListener listener = new SupportUpdateListener();
statement.addListener(listener);
Object[] testdata = getTestDataTwo();
epService.getEPRuntime().sendEvent(testdata, "NestedObjectArr");
// test all properties exist
EventBean received = listener.assertOneGetNewAndReset();
EPAssertionUtil.assertProps(
received,
"simple,object,nodefmap,map".split(","),
new Object[] {"abc", new SupportBean_A("A1"), testdata[2], testdata[3]});
EPAssertionUtil.assertProps(
received, "a1,a2,a3,a4".split(","), new Object[] {"A1", "val1", null, null});
EPAssertionUtil.assertProps(
received,
"b1,b2,b3,b4".split(","),
new Object[] {getNestedKey(testdata, 3, "objectOne"), 10, "val2", 300});
EPAssertionUtil.assertProps(received, "c1,c2".split(","), new Object[] {2, "nestedValue"});
EPAssertionUtil.assertProps(
received,
"d1,d2,d3".split(","),
new Object[] {
300,
getNestedKey(testdata, 3, "mapOne", "objectTwo"),
getNestedKey(testdata, 3, "mapOne", "nodefmapTwo")
});
EPAssertionUtil.assertProps(
received,
"e1,e2,e3".split(","),
new Object[] {
getNestedKey(testdata, 3, "mapOne", "mapTwo"), 4000L, new SupportBean_B("B1")
});
EPAssertionUtil.assertProps(received, "f1,f2".split(","), new Object[] {"1ma0", "B1"});
// assert type info
EPStatement stmt = epService.getEPAdministrator().createEPL(("select * from NestedObjectArr"));
EventType eventType = stmt.getEventType();
String[] propertiesReceived = eventType.getPropertyNames();
String[] propertiesExpected = new String[] {"simple", "object", "nodefmap", "map"};
EPAssertionUtil.assertEqualsAnyOrder(propertiesReceived, propertiesExpected);
assertEquals(String.class, eventType.getPropertyType("simple"));
assertEquals(Map.class, eventType.getPropertyType("map"));
assertEquals(Map.class, eventType.getPropertyType("nodefmap"));
assertEquals(SupportBean_A.class, eventType.getPropertyType("object"));
assertNull(eventType.getPropertyType("map.mapOne.simpleOne"));
// nested POJO with generic return type
listener.reset();
epService
.getEPAdministrator()
.getConfiguration()
.addEventType("MyNested", new String[] {"bean"}, new Object[] {MyNested.class});
EPStatement stmtTwo =
epService
.getEPAdministrator()
.createEPL("select * from MyNested(bean.insides.anyOf(i=>id = 'A'))");
stmtTwo.addListener(listener);
epService
.getEPRuntime()
.sendEvent(
new Object[] {new MyNested(Arrays.asList(new MyInside[] {new MyInside("A")}))},
"MyNested");
assertTrue(listener.isInvoked());
}
/**
* Ctor.
*
* @param assignments the list of variable assignments
* @param variableService variable service
* @param eventAdapterService event adapters
* @throws com.espertech.esper.epl.expression.core.ExprValidationException when variables cannot
* be found
*/
public VariableReadWritePackage(
List<OnTriggerSetAssignment> assignments,
VariableService variableService,
EventAdapterService eventAdapterService)
throws ExprValidationException {
this.metaData = new VariableMetaData[assignments.size()];
this.readersForGlobalVars = new VariableReader[assignments.size()];
this.mustCoerce = new boolean[assignments.size()];
this.writers = new WriteDesc[assignments.size()];
this.variableTypes = new HashMap<String, Object>();
this.eventAdapterService = eventAdapterService;
this.variableService = variableService;
Map<EventTypeSPI, CopyMethodDesc> eventTypeWrittenProps =
new HashMap<EventTypeSPI, CopyMethodDesc>();
int count = 0;
List<VariableTriggerSetDesc> assignmentList = new ArrayList<VariableTriggerSetDesc>();
for (OnTriggerSetAssignment expressionWithAssignments : assignments) {
Pair<String, ExprNode> possibleVariableAssignment =
ExprNodeUtility.checkGetAssignmentToVariableOrProp(
expressionWithAssignments.getExpression());
if (possibleVariableAssignment == null) {
throw new ExprValidationException(
"Missing variable assignment expression in assignment number " + count);
}
assignmentList.add(
new VariableTriggerSetDesc(
possibleVariableAssignment.getFirst(),
possibleVariableAssignment.getSecond().getExprEvaluator()));
String fullVariableName = possibleVariableAssignment.getFirst();
String variableName = fullVariableName;
String subPropertyName = null;
int indexOfDot = variableName.indexOf('.');
if (indexOfDot != -1) {
subPropertyName = variableName.substring(indexOfDot + 1, variableName.length());
variableName = variableName.substring(0, indexOfDot);
}
VariableMetaData variableMetadata = variableService.getVariableMetaData(variableName);
metaData[count] = variableMetadata;
if (variableMetadata == null) {
throw new ExprValidationException(
"Variable by name '" + variableName + "' has not been created or configured");
}
if (variableMetadata.isConstant()) {
throw new ExprValidationException(
"Variable by name '" + variableName + "' is declared constant and may not be set");
}
if (variableMetadata.getContextPartitionName() == null) {
readersForGlobalVars[count] =
variableService.getReader(variableName, VariableService.NOCONTEXT_AGENTINSTANCEID);
}
if (subPropertyName != null) {
if (variableMetadata.getEventType() == null) {
throw new ExprValidationException(
"Variable by name '"
+ variableName
+ "' does not have a property named '"
+ subPropertyName
+ "'");
}
EventType type = variableMetadata.getEventType();
if (!(type instanceof EventTypeSPI)) {
throw new ExprValidationException(
"Variable by name '"
+ variableName
+ "' event type '"
+ type.getName()
+ "' not writable");
}
EventTypeSPI spi = (EventTypeSPI) type;
EventPropertyWriter writer = spi.getWriter(subPropertyName);
EventPropertyGetter getter = spi.getGetter(subPropertyName);
if (writer == null) {
throw new ExprValidationException(
"Variable by name '"
+ variableName
+ "' the property '"
+ subPropertyName
+ "' is not writable");
}
variableTypes.put(fullVariableName, spi.getPropertyType(subPropertyName));
CopyMethodDesc writtenProps = eventTypeWrittenProps.get(spi);
if (writtenProps == null) {
writtenProps = new CopyMethodDesc(variableName, new ArrayList<String>());
eventTypeWrittenProps.put(spi, writtenProps);
}
writtenProps.getPropertiesCopied().add(subPropertyName);
writers[count] = new WriteDesc(spi, variableName, writer, getter);
} else {
// determine types
Class expressionType = possibleVariableAssignment.getSecond().getExprEvaluator().getType();
if (variableMetadata.getEventType() != null) {
if ((expressionType != null)
&& (!JavaClassHelper.isSubclassOrImplementsInterface(
expressionType, variableMetadata.getEventType().getUnderlyingType()))) {
throw new VariableValueException(
"Variable '"
+ variableName
+ "' of declared event type '"
+ variableMetadata.getEventType().getName()
+ "' underlying type '"
+ variableMetadata.getEventType().getUnderlyingType().getName()
+ "' cannot be assigned a value of type '"
+ expressionType.getName()
+ "'");
}
variableTypes.put(variableName, variableMetadata.getEventType().getUnderlyingType());
} else {
Class variableType = variableMetadata.getType();
variableTypes.put(variableName, variableType);
// determine if the expression type can be assigned
if (variableType != java.lang.Object.class) {
if ((JavaClassHelper.getBoxedType(expressionType) != variableType)
&& (expressionType != null)) {
if ((!JavaClassHelper.isNumeric(variableType))
|| (!JavaClassHelper.isNumeric(expressionType))) {
throw new ExprValidationException(
VariableServiceUtil.getAssigmentExMessage(
variableName, variableType, expressionType));
}
if (!(JavaClassHelper.canCoerce(expressionType, variableType))) {
throw new ExprValidationException(
VariableServiceUtil.getAssigmentExMessage(
variableName, variableType, expressionType));
}
mustCoerce[count] = true;
}
}
}
}
count++;
}
this.assignments = assignmentList.toArray(new VariableTriggerSetDesc[assignmentList.size()]);
if (eventTypeWrittenProps.isEmpty()) {
copyMethods = Collections.EMPTY_MAP;
return;
}
copyMethods = new HashMap<EventTypeSPI, EventBeanCopyMethod>();
for (Map.Entry<EventTypeSPI, CopyMethodDesc> entry : eventTypeWrittenProps.entrySet()) {
List<String> propsWritten = entry.getValue().getPropertiesCopied();
String[] props = propsWritten.toArray(new String[propsWritten.size()]);
EventBeanCopyMethod copyMethod = entry.getKey().getCopyMethod(props);
if (copyMethod == null) {
throw new ExprValidationException(
"Variable '"
+ entry.getValue().getVariableName()
+ "' of declared type "
+ JavaClassHelper.getClassNameFullyQualPretty(entry.getKey().getUnderlyingType())
+ "' cannot be assigned to");
}
copyMethods.put(entry.getKey(), copyMethod);
}
}
private static void recursiveCompile(
EvalNode evalNode,
StatementContext context,
Set<String> eventTypeReferences,
boolean isInsertInto,
MatchEventSpec tags,
Deque<Integer> subexpressionIdStack)
throws ExprValidationException {
int counter = 0;
for (EvalNode child : evalNode.getChildNodes()) {
subexpressionIdStack.addLast(counter++);
recursiveCompile(
child, context, eventTypeReferences, isInsertInto, tags, subexpressionIdStack);
subexpressionIdStack.removeLast();
}
LinkedHashMap<String, Pair<EventType, String>> newTaggedEventTypes = null;
LinkedHashMap<String, Pair<EventType, String>> newArrayEventTypes = null;
if (evalNode instanceof EvalFilterNode) {
EvalFilterNode filterNode = (EvalFilterNode) evalNode;
String eventName = filterNode.getRawFilterSpec().getEventTypeName();
EventType resolvedEventType =
FilterStreamSpecRaw.resolveType(
context.getEngineURI(),
eventName,
context.getEventAdapterService(),
context.getPlugInTypeResolutionURIs());
EventType finalEventType = resolvedEventType;
String optionalTag = filterNode.getEventAsName();
boolean isPropertyEvaluation = false;
// obtain property event type, if final event type is properties
if (filterNode.getRawFilterSpec().getOptionalPropertyEvalSpec() != null) {
PropertyEvaluator optionalPropertyEvaluator =
PropertyEvaluatorFactory.makeEvaluator(
filterNode.getRawFilterSpec().getOptionalPropertyEvalSpec(),
resolvedEventType,
filterNode.getEventAsName(),
context.getEventAdapterService(),
context.getMethodResolutionService(),
context.getSchedulingService(),
context.getVariableService(),
context.getEngineURI(),
context.getStatementId(),
context.getStatementName(),
context.getAnnotations(),
subexpressionIdStack);
finalEventType = optionalPropertyEvaluator.getFragmentEventType();
isPropertyEvaluation = true;
}
if (finalEventType instanceof EventTypeSPI) {
eventTypeReferences.add(((EventTypeSPI) finalEventType).getMetadata().getPrimaryName());
}
// If a tag was supplied for the type, the tags must stay with this type, i.e. a=BeanA ->
// b=BeanA -> a=BeanB is a no
if (optionalTag != null) {
Pair<EventType, String> pair = tags.getTaggedEventTypes().get(optionalTag);
EventType existingType = null;
if (pair != null) {
existingType = pair.getFirst();
}
if (existingType == null) {
pair = tags.getArrayEventTypes().get(optionalTag);
if (pair != null) {
throw new ExprValidationException(
"Tag '"
+ optionalTag
+ "' for event '"
+ eventName
+ "' used in the repeat-until operator cannot also appear in other filter expressions");
}
}
if ((existingType != null) && (existingType != finalEventType)) {
throw new ExprValidationException(
"Tag '"
+ optionalTag
+ "' for event '"
+ eventName
+ "' has already been declared for events of type "
+ existingType.getUnderlyingType().getName());
}
pair = new Pair<EventType, String>(finalEventType, eventName);
// add tagged type
if (isPropertyEvaluation) {
newArrayEventTypes = new LinkedHashMap<String, Pair<EventType, String>>();
newArrayEventTypes.put(optionalTag, pair);
} else {
newTaggedEventTypes = new LinkedHashMap<String, Pair<EventType, String>>();
newTaggedEventTypes.put(optionalTag, pair);
}
}
// For this filter, filter types are all known tags at this time,
// and additionally stream 0 (self) is our event type.
// Stream type service allows resolution by property name event if that name appears in other
// tags.
// by defaulting to stream zero.
// Stream zero is always the current event type, all others follow the order of the map
// (stream 1 to N).
String selfStreamName = optionalTag;
if (selfStreamName == null) {
selfStreamName = "s_" + UuidGenerator.generate();
}
LinkedHashMap<String, Pair<EventType, String>> filterTypes =
new LinkedHashMap<String, Pair<EventType, String>>();
Pair<EventType, String> typePair = new Pair<EventType, String>(finalEventType, eventName);
filterTypes.put(selfStreamName, typePair);
filterTypes.putAll(tags.getTaggedEventTypes());
// for the filter, specify all tags used
LinkedHashMap<String, Pair<EventType, String>> filterTaggedEventTypes =
new LinkedHashMap<String, Pair<EventType, String>>(tags.getTaggedEventTypes());
filterTaggedEventTypes.remove(optionalTag);
// handle array tags (match-until clause)
LinkedHashMap<String, Pair<EventType, String>> arrayCompositeEventTypes = null;
if (tags.getArrayEventTypes() != null) {
arrayCompositeEventTypes = new LinkedHashMap<String, Pair<EventType, String>>();
String patternSubexEventType =
getPatternSubexEventType(context.getStatementId(), "pattern", subexpressionIdStack);
EventType arrayTagCompositeEventType =
context
.getEventAdapterService()
.createSemiAnonymousMapType(
patternSubexEventType, new HashMap(), tags.getArrayEventTypes(), isInsertInto);
for (Map.Entry<String, Pair<EventType, String>> entry :
tags.getArrayEventTypes().entrySet()) {
String tag = entry.getKey();
if (!filterTypes.containsKey(tag)) {
Pair<EventType, String> pair =
new Pair<EventType, String>(arrayTagCompositeEventType, tag);
filterTypes.put(tag, pair);
arrayCompositeEventTypes.put(tag, pair);
}
}
}
StreamTypeService streamTypeService =
new StreamTypeServiceImpl(filterTypes, context.getEngineURI(), true, false);
List<ExprNode> exprNodes = filterNode.getRawFilterSpec().getFilterExpressions();
FilterSpecCompiled spec =
FilterSpecCompiler.makeFilterSpec(
resolvedEventType,
eventName,
exprNodes,
filterNode.getRawFilterSpec().getOptionalPropertyEvalSpec(),
filterTaggedEventTypes,
arrayCompositeEventTypes,
streamTypeService,
context.getMethodResolutionService(),
context.getSchedulingService(),
context.getVariableService(),
context.getEventAdapterService(),
context.getEngineURI(),
null,
context,
subexpressionIdStack);
filterNode.setFilterSpec(spec);
} else if (evalNode instanceof EvalObserverNode) {
EvalObserverNode observerNode = (EvalObserverNode) evalNode;
try {
ObserverFactory observerFactory =
context.getPatternResolutionService().create(observerNode.getPatternObserverSpec());
StreamTypeService streamTypeService =
getStreamTypeService(
context.getEngineURI(),
context.getStatementId(),
context.getEventAdapterService(),
tags.taggedEventTypes,
tags.arrayEventTypes,
subexpressionIdStack,
"observer");
ExprValidationContext validationContext =
new ExprValidationContext(
streamTypeService,
context.getMethodResolutionService(),
null,
context.getSchedulingService(),
context.getVariableService(),
context,
context.getEventAdapterService(),
context.getStatementName(),
context.getStatementId(),
context.getAnnotations());
List<ExprNode> validated =
validateExpressions(
observerNode.getPatternObserverSpec().getObjectParameters(), validationContext);
MatchedEventConvertor convertor =
new MatchedEventConvertorImpl(
tags.taggedEventTypes, tags.arrayEventTypes, context.getEventAdapterService());
observerNode.setObserverFactory(observerFactory);
observerFactory.setObserverParameters(validated, convertor);
} catch (ObserverParameterException e) {
throw new ExprValidationException(
"Invalid parameter for pattern observer: " + e.getMessage(), e);
} catch (PatternObjectException e) {
throw new ExprValidationException(
"Failed to resolve pattern observer: " + e.getMessage(), e);
}
} else if (evalNode instanceof EvalGuardNode) {
EvalGuardNode guardNode = (EvalGuardNode) evalNode;
try {
GuardFactory guardFactory =
context.getPatternResolutionService().create(guardNode.getPatternGuardSpec());
StreamTypeService streamTypeService =
getStreamTypeService(
context.getEngineURI(),
context.getStatementId(),
context.getEventAdapterService(),
tags.taggedEventTypes,
tags.arrayEventTypes,
subexpressionIdStack,
"guard");
ExprValidationContext validationContext =
new ExprValidationContext(
streamTypeService,
context.getMethodResolutionService(),
null,
context.getSchedulingService(),
context.getVariableService(),
context,
context.getEventAdapterService(),
context.getStatementName(),
context.getStatementId(),
context.getAnnotations());
List<ExprNode> validated =
validateExpressions(
guardNode.getPatternGuardSpec().getObjectParameters(), validationContext);
MatchedEventConvertor convertor =
new MatchedEventConvertorImpl(
tags.taggedEventTypes, tags.arrayEventTypes, context.getEventAdapterService());
guardNode.setGuardFactory(guardFactory);
guardFactory.setGuardParameters(validated, convertor);
} catch (GuardParameterException e) {
throw new ExprValidationException(
"Invalid parameter for pattern guard: " + e.getMessage(), e);
} catch (PatternObjectException e) {
throw new ExprValidationException("Failed to resolve pattern guard: " + e.getMessage(), e);
}
} else if (evalNode instanceof EvalEveryDistinctNode) {
EvalEveryDistinctNode distinctNode = (EvalEveryDistinctNode) evalNode;
MatchEventSpec matchEventFromChildNodes = analyzeMatchEvent(distinctNode);
StreamTypeService streamTypeService =
getStreamTypeService(
context.getEngineURI(),
context.getStatementId(),
context.getEventAdapterService(),
matchEventFromChildNodes.getTaggedEventTypes(),
matchEventFromChildNodes.getArrayEventTypes(),
subexpressionIdStack,
"every-distinct");
ExprValidationContext validationContext =
new ExprValidationContext(
streamTypeService,
context.getMethodResolutionService(),
null,
context.getSchedulingService(),
context.getVariableService(),
context,
context.getEventAdapterService(),
context.getStatementName(),
context.getStatementId(),
context.getAnnotations());
List<ExprNode> validated;
try {
validated = validateExpressions(distinctNode.getExpressions(), validationContext);
} catch (ExprValidationPropertyException ex) {
throw new ExprValidationPropertyException(
ex.getMessage()
+ ", every-distinct requires that all properties resolve from sub-expressions to the every-distinct",
ex.getCause());
}
MatchedEventConvertor convertor =
new MatchedEventConvertorImpl(
matchEventFromChildNodes.getTaggedEventTypes(),
matchEventFromChildNodes.getArrayEventTypes(),
context.getEventAdapterService());
distinctNode.setConvertor(convertor);
// Determine whether some expressions are constants or time period
List<ExprNode> distinctExpressions = new ArrayList<ExprNode>();
Long msecToExpire = null;
for (ExprNode expr : validated) {
if (expr instanceof ExprTimePeriod) {
Double secondsExpire = (Double) ((ExprTimePeriod) expr).evaluate(null, true, context);
if ((secondsExpire != null) && (secondsExpire > 0)) {
msecToExpire = Math.round(1000d * secondsExpire);
}
log.debug("Setting every-distinct msec-to-expire to " + msecToExpire);
} else if (expr.isConstantResult()) {
log.warn(
"Every-distinct node utilizes an expression returning a constant value, please check expression '"
+ expr.toExpressionString()
+ "', not adding expression to distinct-value expression list");
} else {
distinctExpressions.add(expr);
}
}
if (distinctExpressions.isEmpty()) {
throw new ExprValidationException(
"Every-distinct node requires one or more distinct-value expressions that each return non-constant result values");
}
distinctNode.setExpressions(distinctExpressions, msecToExpire);
} else if (evalNode instanceof EvalMatchUntilNode) {
EvalMatchUntilNode matchUntilNode = (EvalMatchUntilNode) evalNode;
// compile bounds expressions, if any
MatchEventSpec untilMatchEventSpec =
new MatchEventSpec(tags.getTaggedEventTypes(), tags.getArrayEventTypes());
StreamTypeService streamTypeService =
getStreamTypeService(
context.getEngineURI(),
context.getStatementId(),
context.getEventAdapterService(),
untilMatchEventSpec.getTaggedEventTypes(),
untilMatchEventSpec.getArrayEventTypes(),
subexpressionIdStack,
"until");
ExprValidationContext validationContext =
new ExprValidationContext(
streamTypeService,
context.getMethodResolutionService(),
null,
context.getSchedulingService(),
context.getVariableService(),
context,
context.getEventAdapterService(),
context.getStatementName(),
context.getStatementId(),
context.getAnnotations());
String message = "Match-until bounds value expressions must return a numeric value";
if (matchUntilNode.getLowerBounds() != null) {
ExprNode validated =
ExprNodeUtility.getValidatedSubtree(matchUntilNode.getLowerBounds(), validationContext);
matchUntilNode.setLowerBounds(validated);
if ((validated.getExprEvaluator().getType() == null)
|| (!JavaClassHelper.isNumeric(validated.getExprEvaluator().getType()))) {
throw new ExprValidationException(message);
}
}
if (matchUntilNode.getUpperBounds() != null) {
ExprNode validated =
ExprNodeUtility.getValidatedSubtree(matchUntilNode.getUpperBounds(), validationContext);
matchUntilNode.setUpperBounds(validated);
if ((validated.getExprEvaluator().getType() == null)
|| (!JavaClassHelper.isNumeric(validated.getExprEvaluator().getType()))) {
throw new ExprValidationException(message);
}
}
MatchedEventConvertor convertor =
new MatchedEventConvertorImpl(
untilMatchEventSpec.getTaggedEventTypes(),
untilMatchEventSpec.getArrayEventTypes(),
context.getEventAdapterService());
matchUntilNode.setConvertor(convertor);
// compile new tag lists
Set<String> arrayTags = null;
EvalNodeAnalysisResult matchUntilAnalysisResult =
EvalNodeUtil.recursiveAnalyzeChildNodes(matchUntilNode.getChildNodes().get(0));
for (EvalFilterNode filterNode : matchUntilAnalysisResult.getFilterNodes()) {
String optionalTag = filterNode.getEventAsName();
if (optionalTag != null) {
if (arrayTags == null) {
arrayTags = new HashSet<String>();
}
arrayTags.add(optionalTag);
}
}
if (arrayTags != null) {
for (String arrayTag : arrayTags) {
if (!tags.arrayEventTypes.containsKey(arrayTag)) {
tags.arrayEventTypes.put(arrayTag, tags.taggedEventTypes.get(arrayTag));
tags.taggedEventTypes.remove(arrayTag);
}
}
}
matchUntilNode.setTagsArrayedSet(arrayTags);
} else if (evalNode instanceof EvalFollowedByNode) {
EvalFollowedByNode followedByNode = (EvalFollowedByNode) evalNode;
StreamTypeService streamTypeService =
new StreamTypeServiceImpl(context.getEngineURI(), false);
ExprValidationContext validationContext =
new ExprValidationContext(
streamTypeService,
context.getMethodResolutionService(),
null,
context.getSchedulingService(),
context.getVariableService(),
context,
context.getEventAdapterService(),
context.getStatementName(),
context.getStatementId(),
context.getAnnotations());
if (followedByNode.getOptionalMaxExpressions() != null) {
List<ExprNode> validated = new ArrayList<ExprNode>();
for (ExprNode maxExpr : followedByNode.getOptionalMaxExpressions()) {
if (maxExpr == null) {
validated.add(null);
} else {
ExprNodeSummaryVisitor visitor = new ExprNodeSummaryVisitor();
maxExpr.accept(visitor);
if (!visitor.isPlain()) {
String errorMessage =
"Invalid maximum expression in followed-by, "
+ visitor.getMessage()
+ " are not allowed within the expression";
log.error(errorMessage);
throw new ExprValidationException(errorMessage);
}
ExprNode validatedExpr =
ExprNodeUtility.getValidatedSubtree(maxExpr, validationContext);
validated.add(validatedExpr);
if ((validatedExpr.getExprEvaluator().getType() == null)
|| (!JavaClassHelper.isNumeric(validatedExpr.getExprEvaluator().getType()))) {
String message =
"Invalid maximum expression in followed-by, the expression must return an integer value";
throw new ExprValidationException(message);
}
}
}
followedByNode.setOptionalMaxExpressions(validated);
}
}
if (newTaggedEventTypes != null) {
tags.getTaggedEventTypes().putAll(newTaggedEventTypes);
}
if (newArrayEventTypes != null) {
tags.getArrayEventTypes().putAll(newArrayEventTypes);
}
}
