private void initializeWriters() {
List<EventPropertyDescriptor> writables = new ArrayList<EventPropertyDescriptor>();
Map<String, Pair<EventPropertyDescriptor, EventPropertyWriter>> writerMap =
new HashMap<String, Pair<EventPropertyDescriptor, EventPropertyWriter>>();
writables.addAll(Arrays.asList(underlyingMapType.getWriteableProperties()));
for (EventPropertyDescriptor writableMapProp : underlyingMapType.getWriteableProperties()) {
final String propertyName = writableMapProp.getPropertyName();
writables.add(writableMapProp);
EventPropertyWriter writer =
new EventPropertyWriter() {
public void write(Object value, EventBean target) {
DecoratingEventBean decorated = (DecoratingEventBean) target;
decorated.getDecoratingProperties().put(propertyName, value);
}
};
writerMap.put(
propertyName,
new Pair<EventPropertyDescriptor, EventPropertyWriter>(writableMapProp, writer));
}
if (underlyingEventType instanceof EventTypeSPI) {
EventTypeSPI spi = (EventTypeSPI) underlyingEventType;
for (EventPropertyDescriptor writableUndProp : spi.getWriteableProperties()) {
final String propertyName = writableUndProp.getPropertyName();
final EventPropertyWriter innerWriter = spi.getWriter(propertyName);
if (innerWriter == null) {
continue;
}
writables.add(writableUndProp);
EventPropertyWriter writer =
new EventPropertyWriter() {
public void write(Object value, EventBean target) {
DecoratingEventBean decorated = (DecoratingEventBean) target;
innerWriter.write(value, decorated.getUnderlyingEvent());
}
};
writerMap.put(
propertyName,
new Pair<EventPropertyDescriptor, EventPropertyWriter>(writableUndProp, writer));
}
}
writers = writerMap;
writableProperties = writables.toArray(new EventPropertyDescriptor[writables.size()]);
}
private static PropertyDescriptorComposite getCompositeProperties(
EventType underlyingEventType, MapEventType underlyingMapType) {
List<String> propertyNames = new ArrayList<String>();
propertyNames.addAll(Arrays.asList(underlyingEventType.getPropertyNames()));
propertyNames.addAll(Arrays.asList(underlyingMapType.getPropertyNames()));
String[] propertyNamesArr = propertyNames.toArray(new String[propertyNames.size()]);
List<EventPropertyDescriptor> propertyDesc = new ArrayList<EventPropertyDescriptor>();
HashMap<String, EventPropertyDescriptor> propertyDescriptorMap =
new HashMap<String, EventPropertyDescriptor>();
for (EventPropertyDescriptor eventProperty : underlyingEventType.getPropertyDescriptors()) {
propertyDesc.add(eventProperty);
propertyDescriptorMap.put(eventProperty.getPropertyName(), eventProperty);
}
for (EventPropertyDescriptor mapProperty : underlyingMapType.getPropertyDescriptors()) {
propertyDesc.add(mapProperty);
propertyDescriptorMap.put(mapProperty.getPropertyName(), mapProperty);
}
EventPropertyDescriptor[] propertyDescArr =
propertyDesc.toArray(new EventPropertyDescriptor[propertyDesc.size()]);
return new PropertyDescriptorComposite(
propertyDescriptorMap, propertyNamesArr, propertyDescArr);
}
public SelectExprProcessor getEvaluator() throws ExprValidationException {
// Get the named and un-named stream selectors (i.e. select s0.* from S0 as s0), if any
List<SelectClauseStreamCompiledSpec> namedStreams =
new ArrayList<SelectClauseStreamCompiledSpec>();
List<SelectExprStreamDesc> unnamedStreams = new ArrayList<SelectExprStreamDesc>();
for (SelectExprStreamDesc spec : selectedStreams) {
if (spec.getStreamSelected() != null && spec.getStreamSelected().getOptionalName() == null) {
unnamedStreams.add(spec);
} else if (spec.getExpressionSelectedAsStream()
!= null) { // handle special "transpose(...)" function
unnamedStreams.add(spec);
} else {
namedStreams.add(spec.getStreamSelected());
if (spec.getStreamSelected().isProperty()) {
throw new ExprValidationException(
"The property wildcard syntax must be used without column name");
}
}
}
// Error if there are more then one un-named streams (i.e. select s0.*, s1.* from S0 as s0, S1
// as s1)
// Thus there is only 1 unnamed stream selector maximum.
if (unnamedStreams.size() > 1) {
throw new ExprValidationException(
"A column name must be supplied for all but one stream if multiple streams are selected via the stream.* notation");
}
if (selectedStreams.isEmpty() && selectionList.isEmpty() && !isUsingWildcard) {
throw new IllegalArgumentException("Empty selection list not supported");
}
for (SelectClauseExprCompiledSpec entry : selectionList) {
if (entry.getAssignedName() == null) {
throw new IllegalArgumentException(
"Expected name for each expression has not been supplied");
}
}
// Verify insert into clause
if (insertIntoDesc != null) {
verifyInsertInto(insertIntoDesc, selectionList);
}
// Build a subordinate wildcard processor for joins
SelectExprProcessor joinWildcardProcessor = null;
if (typeService.getStreamNames().length > 1 && isUsingWildcard) {
joinWildcardProcessor =
SelectExprJoinWildcardProcessorFactory.create(
assignedTypeNumberStack,
statementId,
typeService.getStreamNames(),
typeService.getEventTypes(),
eventAdapterService,
null,
selectExprEventTypeRegistry,
methodResolutionService,
annotations,
configuration);
}
// Resolve underlying event type in the case of wildcard select
EventType eventType = null;
boolean singleStreamWrapper = false;
if (isUsingWildcard) {
if (joinWildcardProcessor != null) {
eventType = joinWildcardProcessor.getResultEventType();
} else {
eventType = typeService.getEventTypes()[0];
if (eventType instanceof WrapperEventType) {
singleStreamWrapper = true;
}
}
}
// Get expression nodes
ExprEvaluator[] exprEvaluators = new ExprEvaluator[selectionList.size()];
ExprNode[] exprNodes = new ExprNode[selectionList.size()];
Object[] expressionReturnTypes = new Object[selectionList.size()];
for (int i = 0; i < selectionList.size(); i++) {
ExprNode expr = selectionList.get(i).getSelectExpression();
exprNodes[i] = expr;
exprEvaluators[i] = expr.getExprEvaluator();
Map<String, Object> eventTypeExpr = exprEvaluators[i].getEventType();
if (eventTypeExpr == null) {
expressionReturnTypes[i] = exprEvaluators[i].getType();
} else {
final ExprEvaluator innerExprEvaluator = expr.getExprEvaluator();
final EventType mapType =
eventAdapterService.createAnonymousMapType(
statementId
+ "_innereval_"
+ CollectionUtil.toString(assignedTypeNumberStack, "_")
+ "_"
+ i,
eventTypeExpr);
ExprEvaluator evaluatorFragment =
new ExprEvaluator() {
public Object evaluate(
EventBean[] eventsPerStream,
boolean isNewData,
ExprEvaluatorContext exprEvaluatorContext) {
Map<String, Object> values =
(Map<String, Object>)
innerExprEvaluator.evaluate(
eventsPerStream, isNewData, exprEvaluatorContext);
if (values == null) {
values = Collections.emptyMap();
}
return eventAdapterService.adapterForTypedMap(values, mapType);
}
public Class getType() {
return Map.class;
}
public Map<String, Object> getEventType() {
return null;
}
};
expressionReturnTypes[i] = mapType;
exprEvaluators[i] = evaluatorFragment;
}
}
// Get column names
String[] columnNames;
String[] columnNamesAsProvided;
if ((insertIntoDesc != null) && (!insertIntoDesc.getColumnNames().isEmpty())) {
columnNames =
insertIntoDesc
.getColumnNames()
.toArray(new String[insertIntoDesc.getColumnNames().size()]);
columnNamesAsProvided = columnNames;
} else if (!selectedStreams.isEmpty()) { // handle stream selection column names
int numStreamColumnsJoin = 0;
if (isUsingWildcard && typeService.getEventTypes().length > 1) {
numStreamColumnsJoin = typeService.getEventTypes().length;
}
columnNames = new String[selectionList.size() + namedStreams.size() + numStreamColumnsJoin];
columnNamesAsProvided = new String[columnNames.length];
int count = 0;
for (SelectClauseExprCompiledSpec aSelectionList : selectionList) {
columnNames[count] = aSelectionList.getAssignedName();
columnNamesAsProvided[count] = aSelectionList.getProvidedName();
count++;
}
for (SelectClauseStreamCompiledSpec aSelectionList : namedStreams) {
columnNames[count] = aSelectionList.getOptionalName();
columnNamesAsProvided[count] = aSelectionList.getOptionalName();
count++;
}
// for wildcard joins, add the streams themselves
if (isUsingWildcard && typeService.getEventTypes().length > 1) {
for (String streamName : typeService.getStreamNames()) {
columnNames[count] = streamName;
columnNamesAsProvided[count] = streamName;
count++;
}
}
} else // handle regular column names
{
columnNames = new String[selectionList.size()];
columnNamesAsProvided = new String[selectionList.size()];
for (int i = 0; i < selectionList.size(); i++) {
columnNames[i] = selectionList.get(i).getAssignedName();
columnNamesAsProvided[i] = selectionList.get(i).getProvidedName();
}
}
// Find if there is any fragments selected
EventType targetType = null;
if (insertIntoDesc != null) {
targetType = eventAdapterService.getExistsTypeByName(insertIntoDesc.getEventTypeName());
}
// Find if there is any fragment event types:
// This is a special case for fragments: select a, b from pattern [a=A -> b=B]
// We'd like to maintain 'A' and 'B' EventType in the Map type, and 'a' and 'b' EventBeans in
// the event bean
for (int i = 0; i < selectionList.size(); i++) {
if (!(exprNodes[i] instanceof ExprIdentNode)) {
continue;
}
ExprIdentNode identNode = (ExprIdentNode) exprNodes[i];
String propertyName = identNode.getResolvedPropertyName();
final int streamNum = identNode.getStreamId();
EventType eventTypeStream = typeService.getEventTypes()[streamNum];
if (eventTypeStream instanceof NativeEventType) {
continue; // we do not transpose the native type for performance reasons
}
FragmentEventType fragmentType = eventTypeStream.getFragmentType(propertyName);
if ((fragmentType == null) || (fragmentType.isNative())) {
continue; // we also ignore native Java classes as fragments for performance reasons
}
// may need to unwrap the fragment if the target type has this underlying type
FragmentEventType targetFragment = null;
if (targetType != null) {
targetFragment = targetType.getFragmentType(columnNames[i]);
}
if ((targetType != null)
&& (fragmentType.getFragmentType().getUnderlyingType() == expressionReturnTypes[i])
&& ((targetFragment == null) || (targetFragment != null && targetFragment.isNative()))) {
ExprEvaluator evaluatorFragment;
// A match was found, we replace the expression
final EventPropertyGetter getter = eventTypeStream.getGetter(propertyName);
final Class returnType = eventTypeStream.getPropertyType(propertyName);
evaluatorFragment =
new ExprEvaluator() {
public Object evaluate(
EventBean[] eventsPerStream,
boolean isNewData,
ExprEvaluatorContext exprEvaluatorContext) {
EventBean streamEvent = eventsPerStream[streamNum];
if (streamEvent == null) {
return null;
}
return getter.get(streamEvent);
}
public Class getType() {
return returnType;
}
@Override
public Map<String, Object> getEventType() {
return null;
}
};
exprEvaluators[i] = evaluatorFragment;
}
// same for arrays: may need to unwrap the fragment if the target type has this underlying
// type
else if ((targetType != null)
&& expressionReturnTypes[i] instanceof Class
&& (fragmentType.getFragmentType().getUnderlyingType()
== ((Class) expressionReturnTypes[i]).getComponentType())
&& ((targetFragment == null) || (targetFragment != null && targetFragment.isNative()))) {
ExprEvaluator evaluatorFragment;
final EventPropertyGetter getter = eventTypeStream.getGetter(propertyName);
final Class returnType =
JavaClassHelper.getArrayType(eventTypeStream.getPropertyType(propertyName));
evaluatorFragment =
new ExprEvaluator() {
public Object evaluate(
EventBean[] eventsPerStream,
boolean isNewData,
ExprEvaluatorContext exprEvaluatorContext) {
EventBean streamEvent = eventsPerStream[streamNum];
if (streamEvent == null) {
return null;
}
return getter.get(streamEvent);
}
public Class getType() {
return returnType;
}
@Override
public Map<String, Object> getEventType() {
return null;
}
};
exprEvaluators[i] = evaluatorFragment;
} else {
ExprEvaluator evaluatorFragment;
final EventPropertyGetter getter = eventTypeStream.getGetter(propertyName);
final Class returnType =
eventTypeStream.getFragmentType(propertyName).getFragmentType().getUnderlyingType();
// A match was found, we replace the expression
evaluatorFragment =
new ExprEvaluator() {
public Object evaluate(
EventBean[] eventsPerStream,
boolean isNewData,
ExprEvaluatorContext exprEvaluatorContext) {
EventBean streamEvent = eventsPerStream[streamNum];
if (streamEvent == null) {
return null;
}
return getter.getFragment(streamEvent);
}
public Class getType() {
return returnType;
}
public Map<String, Object> getEventType() {
return null;
}
};
exprEvaluators[i] = evaluatorFragment;
if (!fragmentType.isIndexed()) {
expressionReturnTypes[i] = fragmentType.getFragmentType();
} else {
expressionReturnTypes[i] = new EventType[] {fragmentType.getFragmentType()};
}
}
}
// Find if there is any stream expression (ExprStreamNode) :
// This is a special case for stream selection: select a, b from A as a, B as b
// We'd like to maintain 'A' and 'B' EventType in the Map type, and 'a' and 'b' EventBeans in
// the event bean
for (int i = 0; i < selectionList.size(); i++) {
if (!(exprEvaluators[i] instanceof ExprStreamUnderlyingNode)) {
continue;
}
ExprStreamUnderlyingNode undNode = (ExprStreamUnderlyingNode) exprEvaluators[i];
final int streamNum = undNode.getStreamId();
final Class returnType = undNode.getExprEvaluator().getType();
EventType eventTypeStream = typeService.getEventTypes()[streamNum];
// A match was found, we replace the expression
ExprEvaluator evaluator =
new ExprEvaluator() {
public Object evaluate(
EventBean[] eventsPerStream,
boolean isNewData,
ExprEvaluatorContext exprEvaluatorContext) {
return eventsPerStream[streamNum];
}
public Class getType() {
return returnType;
}
public Map<String, Object> getEventType() {
return null;
}
};
exprEvaluators[i] = evaluator;
expressionReturnTypes[i] = eventTypeStream;
}
// Build event type that reflects all selected properties
Map<String, Object> selPropertyTypes = new LinkedHashMap<String, Object>();
int count = 0;
for (int i = 0; i < exprEvaluators.length; i++) {
Object expressionReturnType = expressionReturnTypes[count];
selPropertyTypes.put(columnNames[count], expressionReturnType);
count++;
}
if (!selectedStreams.isEmpty()) {
for (SelectClauseStreamCompiledSpec element : namedStreams) {
EventType eventTypeStream = typeService.getEventTypes()[element.getStreamNumber()];
selPropertyTypes.put(columnNames[count], eventTypeStream);
count++;
}
if (isUsingWildcard && typeService.getEventTypes().length > 1) {
for (int i = 0; i < typeService.getEventTypes().length; i++) {
EventType eventTypeStream = typeService.getEventTypes()[i];
selPropertyTypes.put(columnNames[count], eventTypeStream);
count++;
}
}
}
// Handle stream selection
EventType underlyingEventType = null;
int underlyingStreamNumber = 0;
boolean underlyingIsFragmentEvent = false;
EventPropertyGetter underlyingPropertyEventGetter = null;
ExprEvaluator underlyingExprEvaluator = null;
boolean useMapOutput =
EventRepresentationUtil.isMap(
annotations, configuration, CreateSchemaDesc.AssignedType.NONE);
if (!selectedStreams.isEmpty()) {
// Resolve underlying event type in the case of wildcard or non-named stream select.
// Determine if the we are considering a tagged event or a stream name.
if ((isUsingWildcard) || (!unnamedStreams.isEmpty())) {
if (!unnamedStreams.isEmpty()) {
if (unnamedStreams.get(0).getStreamSelected() != null) {
SelectClauseStreamCompiledSpec streamSpec = unnamedStreams.get(0).getStreamSelected();
// the tag.* syntax for : select tag.* from pattern [tag = A]
underlyingStreamNumber = streamSpec.getStreamNumber();
if (streamSpec.isFragmentEvent()) {
EventType compositeMap = typeService.getEventTypes()[underlyingStreamNumber];
FragmentEventType fragment = compositeMap.getFragmentType(streamSpec.getStreamName());
underlyingEventType = fragment.getFragmentType();
underlyingIsFragmentEvent = true;
}
// the property.* syntax for : select property.* from A
else if (streamSpec.isProperty()) {
String propertyName = streamSpec.getStreamName();
Class propertyType = streamSpec.getPropertyType();
int streamNumber = streamSpec.getStreamNumber();
if (JavaClassHelper.isJavaBuiltinDataType(streamSpec.getPropertyType())) {
throw new ExprValidationException(
"The property wildcard syntax cannot be used on built-in types as returned by property '"
+ propertyName
+ "'");
}
// create or get an underlying type for that Class
underlyingEventType =
eventAdapterService.addBeanType(
propertyType.getName(), propertyType, false, false, false);
selectExprEventTypeRegistry.add(underlyingEventType);
underlyingPropertyEventGetter =
typeService.getEventTypes()[streamNumber].getGetter(propertyName);
if (underlyingPropertyEventGetter == null) {
throw new ExprValidationException(
"Unexpected error resolving property getter for property " + propertyName);
}
}
// the stream.* syntax for: select a.* from A as a
else {
underlyingEventType = typeService.getEventTypes()[underlyingStreamNumber];
}
}
// handle case where the unnamed stream is a "transpose" function
else {
ExprNode expression =
unnamedStreams.get(0).getExpressionSelectedAsStream().getSelectExpression();
Class returnType = expression.getExprEvaluator().getType();
underlyingEventType =
eventAdapterService.addBeanType(
returnType.getName(), returnType, false, false, false);
selectExprEventTypeRegistry.add(underlyingEventType);
underlyingExprEvaluator = expression.getExprEvaluator();
}
} else {
// no un-named stream selectors, but a wildcard was specified
if (typeService.getEventTypes().length == 1) {
// not a join, we are using the selected event
underlyingEventType = typeService.getEventTypes()[0];
if (underlyingEventType instanceof WrapperEventType) {
singleStreamWrapper = true;
}
} else {
// For joins, all results are placed in a map with properties for each stream
underlyingEventType = null;
}
}
}
}
SelectExprContext selectExprContext =
new SelectExprContext(exprEvaluators, columnNames, eventAdapterService);
if (insertIntoDesc == null) {
if (!selectedStreams.isEmpty()) {
EventType resultEventType;
if (underlyingEventType != null) {
resultEventType =
eventAdapterService.createAnonymousWrapperType(
statementId + "_wrapout_" + CollectionUtil.toString(assignedTypeNumberStack, "_"),
underlyingEventType,
selPropertyTypes);
return new EvalSelectStreamWUnderlying(
selectExprContext,
resultEventType,
namedStreams,
isUsingWildcard,
unnamedStreams,
singleStreamWrapper,
underlyingIsFragmentEvent,
underlyingStreamNumber,
underlyingPropertyEventGetter,
underlyingExprEvaluator);
} else {
resultEventType =
eventAdapterService.createAnonymousMapType(
statementId + "_mapout_" + CollectionUtil.toString(assignedTypeNumberStack, "_"),
selPropertyTypes);
return new EvalSelectStreamNoUnderlyingMap(
selectExprContext, resultEventType, namedStreams, isUsingWildcard);
}
}
if (isUsingWildcard) {
EventType resultEventType =
eventAdapterService.createAnonymousWrapperType(
statementId
+ "_wrapoutwild_"
+ CollectionUtil.toString(assignedTypeNumberStack, "_"),
eventType,
selPropertyTypes);
if (singleStreamWrapper) {
return new EvalSelectWildcardSSWrapper(selectExprContext, resultEventType);
}
if (joinWildcardProcessor == null) {
return new EvalSelectWildcard(selectExprContext, resultEventType);
}
return new EvalSelectWildcardJoin(
selectExprContext, resultEventType, joinWildcardProcessor);
}
EventType resultEventType;
if (!useMapOutput) {
resultEventType =
eventAdapterService.createAnonymousObjectArrayType(
statementId + "_result_" + CollectionUtil.toString(assignedTypeNumberStack, "_"),
selPropertyTypes);
} else {
resultEventType =
eventAdapterService.createAnonymousMapType(
statementId + "_result_" + CollectionUtil.toString(assignedTypeNumberStack, "_"),
selPropertyTypes);
}
if (selectExprContext.getExpressionNodes().length == 0) {
return new EvalSelectNoWildcardEmptyProps(selectExprContext, resultEventType);
} else {
if (!useMapOutput) {
return new EvalSelectNoWildcardObjectArray(selectExprContext, resultEventType);
}
return new EvalSelectNoWildcardMap(selectExprContext, resultEventType);
}
}
EventType vaeInnerEventType = null;
boolean singleColumnWrapOrBeanCoercion =
false; // Additional single-column coercion for non-wrapped type done by
// SelectExprInsertEventBeanFactory
boolean isRevisionEvent = false;
try {
if (!selectedStreams.isEmpty()) {
EventType resultEventType;
if (underlyingEventType
!= null) // a single stream was selected via "stream.*" and there is no column name
{
// recast as a Map-type
if (underlyingEventType instanceof MapEventType && targetType instanceof MapEventType) {
return new EvalSelectStreamWUnderlyingRecastMap(
selectExprContext,
selectedStreams.get(0).getStreamSelected().getStreamNumber(),
targetType);
}
// recast as a Object-array-type
if (underlyingEventType instanceof ObjectArrayEventType
&& targetType instanceof ObjectArrayEventType) {
return new EvalSelectStreamWUnderlyingRecastObjectArray(
selectExprContext,
selectedStreams.get(0).getStreamSelected().getStreamNumber(),
targetType);
}
// recast as a Bean-type
if (underlyingEventType instanceof BeanEventType && targetType instanceof BeanEventType) {
SelectClauseExprCompiledSpec expressionAsStream =
selectedStreams.get(0).getExpressionSelectedAsStream();
if (expressionAsStream != null) {
return new EvalSelectStreamWUnderlyingRecastBean(
selectExprContext,
expressionAsStream,
underlyingEventType,
targetType,
exprEvaluators.length);
} else {
return new EvalInsertBeanRecast(
targetType,
eventAdapterService,
selectedStreams.get(0).getStreamSelected().getStreamNumber(),
typeService.getEventTypes());
}
}
// wrap if no recast possible
resultEventType =
eventAdapterService.addWrapperType(
insertIntoDesc.getEventTypeName(),
underlyingEventType,
selPropertyTypes,
false,
true);
return new EvalSelectStreamWUnderlying(
selectExprContext,
resultEventType,
namedStreams,
isUsingWildcard,
unnamedStreams,
singleStreamWrapper,
underlyingIsFragmentEvent,
underlyingStreamNumber,
underlyingPropertyEventGetter,
underlyingExprEvaluator);
} else // there are one or more streams selected with column name such as "stream.* as
// columnOne"
{
EventType existingType =
eventAdapterService.getExistsTypeByName(insertIntoDesc.getEventTypeName());
if (existingType instanceof BeanEventType) {
String name = selectedStreams.get(0).getStreamSelected().getStreamName();
String alias = selectedStreams.get(0).getStreamSelected().getOptionalName();
String syntaxUsed = name + ".*" + (alias != null ? " as " + alias : "");
String syntaxInstead = name + (alias != null ? " as " + alias : "");
throw new ExprValidationException(
"The '"
+ syntaxUsed
+ "' syntax is not allowed when inserting into an existing bean event type, use the '"
+ syntaxInstead
+ "' syntax instead");
}
if (existingType == null || existingType instanceof MapEventType) {
resultEventType =
eventAdapterService.addNestableMapType(
insertIntoDesc.getEventTypeName(),
selPropertyTypes,
null,
false,
false,
false,
false,
true);
Set<String> propertiesToUnwrap =
getEventBeanToObjectProps(selPropertyTypes, resultEventType);
if (propertiesToUnwrap.isEmpty()) {
return new EvalSelectStreamNoUnderlyingMap(
selectExprContext, resultEventType, namedStreams, isUsingWildcard);
} else {
return new EvalSelectStreamNoUndWEventBeanToObj(
selectExprContext,
resultEventType,
namedStreams,
isUsingWildcard,
propertiesToUnwrap);
}
} else {
Set<String> propertiesToUnwrap =
getEventBeanToObjectProps(selPropertyTypes, existingType);
if (propertiesToUnwrap.isEmpty()) {
return new EvalSelectStreamNoUnderlyingObjectArray(
selectExprContext, existingType, namedStreams, isUsingWildcard);
} else {
return new EvalSelectStreamNoUndWEventBeanToObjObjArray(
selectExprContext,
existingType,
namedStreams,
isUsingWildcard,
propertiesToUnwrap);
}
}
}
}
ValueAddEventProcessor vaeProcessor =
valueAddEventService.getValueAddProcessor(insertIntoDesc.getEventTypeName());
EventType resultEventType;
if (isUsingWildcard) {
if (vaeProcessor != null) {
resultEventType = vaeProcessor.getValueAddEventType();
isRevisionEvent = true;
vaeProcessor.validateEventType(eventType);
} else {
EventType existingType =
eventAdapterService.getExistsTypeByName(insertIntoDesc.getEventTypeName());
SelectExprProcessor existingTypeProcessor = null;
if (existingType != null) {
// we may get away with re-casting an existing bean-event-type event to another
// bean-event-type
if ((existingType instanceof BeanEventType)
&& (typeService.getEventTypes()[0] instanceof BeanEventType)
&& (selPropertyTypes.isEmpty())) {
return new EvalInsertBeanRecast(
existingType, eventAdapterService, 0, typeService.getEventTypes());
}
if ((existingType instanceof WrapperEventType)
&& (typeService.getEventTypes()[0] instanceof BeanEventType)
&& (exprEvaluators.length == 0)) {
WrapperEventType wrapperType = (WrapperEventType) existingType;
if (wrapperType.getUnderlyingEventType() instanceof BeanEventType) {
return new EvalInsertBeanWrapRecast(
wrapperType, eventAdapterService, 0, typeService.getEventTypes());
}
}
existingTypeProcessor =
SelectExprInsertEventBeanFactory.getInsertUnderlyingNonJoin(
eventAdapterService,
existingType,
isUsingWildcard,
typeService,
exprEvaluators,
columnNames,
expressionReturnTypes,
methodResolutionService.getEngineImportService(),
insertIntoDesc,
columnNamesAsProvided);
}
if (existingTypeProcessor != null) {
return existingTypeProcessor;
} else if (existingType != null
&& selPropertyTypes.isEmpty()
&& existingType instanceof MapEventType) {
resultEventType = existingType;
return new EvalInsertCoercionMap(resultEventType, eventAdapterService);
} else if (existingType != null
&& selPropertyTypes.isEmpty()
&& existingType instanceof ObjectArrayEventType) {
resultEventType = existingType;
return new EvalInsertCoercionObjectArray(resultEventType, eventAdapterService);
} else if (selPropertyTypes.isEmpty() && eventType instanceof BeanEventType) {
BeanEventType beanEventType = (BeanEventType) eventType;
resultEventType =
eventAdapterService.addBeanTypeByName(
insertIntoDesc.getEventTypeName(), beanEventType.getUnderlyingType(), false);
} else {
resultEventType =
eventAdapterService.addWrapperType(
insertIntoDesc.getEventTypeName(), eventType, selPropertyTypes, false, true);
}
}
if (singleStreamWrapper) {
if (!isRevisionEvent) {
return new EvalInsertWildcardSSWrapper(selectExprContext, resultEventType);
} else {
return new EvalInsertWildcardSSWrapperRevision(
selectExprContext, resultEventType, vaeProcessor);
}
}
if (joinWildcardProcessor == null) {
if (!isRevisionEvent) {
if (resultEventType instanceof WrapperEventType) {
return new EvalInsertWildcardWrapper(selectExprContext, resultEventType);
} else {
return new EvalInsertWildcardBean(selectExprContext, resultEventType);
}
} else {
if (exprEvaluators.length == 0) {
return new EvalInsertWildcardRevision(
selectExprContext, resultEventType, vaeProcessor);
} else {
EventType wrappingEventType =
eventAdapterService.addWrapperType(
insertIntoDesc.getEventTypeName() + "_wrapped",
eventType,
selPropertyTypes,
false,
true);
return new EvalInsertWildcardRevisionWrapper(
selectExprContext, resultEventType, vaeProcessor, wrappingEventType);
}
}
} else {
if (!isRevisionEvent) {
return new EvalInsertWildcardJoin(
selectExprContext, resultEventType, joinWildcardProcessor);
} else {
return new EvalInsertWildcardJoinRevision(
selectExprContext, resultEventType, joinWildcardProcessor, vaeProcessor);
}
}
}
// not using wildcard
resultEventType = null;
if ((columnNames.length == 1) && (insertIntoDesc.getColumnNames().size() == 0)) {
EventType existingType =
eventAdapterService.getExistsTypeByName(insertIntoDesc.getEventTypeName());
if (existingType != null) {
// check if the existing type and new type are compatible
Object columnOneType = expressionReturnTypes[0];
if (existingType instanceof WrapperEventType) {
WrapperEventType wrapperType = (WrapperEventType) existingType;
// Map and Object both supported
if (wrapperType.getUnderlyingEventType().getUnderlyingType() == columnOneType) {
singleColumnWrapOrBeanCoercion = true;
resultEventType = existingType;
}
}
if ((existingType instanceof BeanEventType) && (columnOneType instanceof Class)) {
BeanEventType beanType = (BeanEventType) existingType;
// Map and Object both supported
if (JavaClassHelper.isSubclassOrImplementsInterface(
(Class) columnOneType, beanType.getUnderlyingType())) {
singleColumnWrapOrBeanCoercion = true;
resultEventType = existingType;
}
}
}
}
if (singleColumnWrapOrBeanCoercion) {
if (!isRevisionEvent) {
if (resultEventType instanceof WrapperEventType) {
WrapperEventType wrapper = (WrapperEventType) resultEventType;
if (wrapper.getUnderlyingEventType() instanceof MapEventType) {
return new EvalInsertNoWildcardSingleColCoercionMapWrap(
selectExprContext, resultEventType);
} else if (wrapper.getUnderlyingEventType() instanceof ObjectArrayEventType) {
return new EvalInsertNoWildcardSingleColCoercionObjectArrayWrap(
selectExprContext, resultEventType);
} else if (wrapper.getUnderlyingEventType() instanceof VariantEventType) {
VariantEventType variantEventType =
(VariantEventType) wrapper.getUnderlyingEventType();
vaeProcessor = valueAddEventService.getValueAddProcessor(variantEventType.getName());
return new EvalInsertNoWildcardSingleColCoercionBeanWrapVariant(
selectExprContext, resultEventType, vaeProcessor);
} else {
return new EvalInsertNoWildcardSingleColCoercionBeanWrap(
selectExprContext, resultEventType);
}
} else {
if (resultEventType instanceof BeanEventType) {
return new EvalInsertNoWildcardSingleColCoercionBean(
selectExprContext, resultEventType);
}
}
} else {
if (resultEventType instanceof MapEventType) {
return new EvalInsertNoWildcardSingleColCoercionRevisionMap(
selectExprContext, resultEventType, vaeProcessor, vaeInnerEventType);
} else if (resultEventType instanceof ObjectArrayEventType) {
return new EvalInsertNoWildcardSingleColCoercionRevisionObjectArray(
selectExprContext, resultEventType, vaeProcessor, vaeInnerEventType);
} else if (resultEventType instanceof BeanEventType) {
return new EvalInsertNoWildcardSingleColCoercionRevisionBean(
selectExprContext, resultEventType, vaeProcessor, vaeInnerEventType);
} else {
return new EvalInsertNoWildcardSingleColCoercionRevisionBeanWrap(
selectExprContext, resultEventType, vaeProcessor, vaeInnerEventType);
}
}
}
if (resultEventType == null) {
if (vaeProcessor != null) {
// Use an anonymous type if the target is not a variant stream
if (valueAddEventService.getValueAddProcessor(insertIntoDesc.getEventTypeName())
== null) {
resultEventType =
eventAdapterService.createAnonymousMapType(
statementId + "_vae_" + CollectionUtil.toString(assignedTypeNumberStack, "_"),
selPropertyTypes);
} else {
String statementName = "stmt_" + statementId + "_insert";
resultEventType =
eventAdapterService.addNestableMapType(
statementName, selPropertyTypes, null, false, false, false, false, true);
}
} else {
EventType existingType =
eventAdapterService.getExistsTypeByName(insertIntoDesc.getEventTypeName());
if (existingType == null) {
// The type may however be an auto-import or fully-qualified class name
Class clazz = null;
try {
clazz = this.methodResolutionService.resolveClass(insertIntoDesc.getEventTypeName());
} catch (EngineImportException e) {
log.debug(
"Target stream name '"
+ insertIntoDesc.getEventTypeName()
+ "' is not resolved as a class name");
}
if (clazz != null) {
existingType =
eventAdapterService.addBeanType(clazz.getName(), clazz, false, false, false);
}
}
SelectExprProcessor selectExprInsertEventBean = null;
if (existingType != null) {
selectExprInsertEventBean =
SelectExprInsertEventBeanFactory.getInsertUnderlyingNonJoin(
eventAdapterService,
existingType,
isUsingWildcard,
typeService,
exprEvaluators,
columnNames,
expressionReturnTypes,
methodResolutionService.getEngineImportService(),
insertIntoDesc,
columnNamesAsProvided);
}
if (selectExprInsertEventBean != null) {
return selectExprInsertEventBean;
} else {
boolean useMap =
EventRepresentationUtil.isMap(
annotations, configuration, CreateSchemaDesc.AssignedType.NONE);
if (useMap) {
resultEventType =
eventAdapterService.addNestableMapType(
insertIntoDesc.getEventTypeName(),
selPropertyTypes,
null,
false,
false,
false,
false,
true);
} else {
resultEventType =
eventAdapterService.addNestableObjectArrayType(
insertIntoDesc.getEventTypeName(),
selPropertyTypes,
null,
false,
false,
false,
false,
true);
}
}
}
}
if (vaeProcessor != null) {
vaeProcessor.validateEventType(resultEventType);
vaeInnerEventType = resultEventType;
resultEventType = vaeProcessor.getValueAddEventType();
isRevisionEvent = true;
}
if (!isRevisionEvent) {
if (resultEventType instanceof MapEventType) {
return new EvalInsertNoWildcardMap(selectExprContext, resultEventType);
} else {
return new EvalInsertNoWildcardObjectArray(selectExprContext, resultEventType);
}
} else {
return new EvalInsertNoWildcardRevision(
selectExprContext, resultEventType, vaeProcessor, vaeInnerEventType);
}
} catch (EventAdapterException ex) {
log.debug("Exception provided by event adapter: " + ex.getMessage(), ex);
throw new ExprValidationException(ex.getMessage(), ex);
}
}
protected static ExceptionHandlingService initExceptionHandling(
String engineURI,
ConfigurationEngineDefaults.ExceptionHandling exceptionHandling,
ConfigurationEngineDefaults.ConditionHandling conditionHandling)
throws ConfigurationException {
List<ExceptionHandler> exceptionHandlers;
if (exceptionHandling.getHandlerFactories() == null
|| exceptionHandling.getHandlerFactories().isEmpty()) {
exceptionHandlers = Collections.emptyList();
} else {
exceptionHandlers = new ArrayList<ExceptionHandler>();
ExceptionHandlerFactoryContext context = new ExceptionHandlerFactoryContext(engineURI);
for (String className : exceptionHandling.getHandlerFactories()) {
try {
ExceptionHandlerFactory factory =
(ExceptionHandlerFactory)
JavaClassHelper.instantiate(ExceptionHandlerFactory.class, className);
ExceptionHandler handler = factory.getHandler(context);
if (handler == null) {
log.warn(
"Exception handler factory '"
+ className
+ "' returned a null handler, skipping factory");
continue;
}
exceptionHandlers.add(handler);
} catch (RuntimeException ex) {
throw new ConfigurationException(
"Exception initializing exception handler from exception handler factory '"
+ className
+ "': "
+ ex.getMessage(),
ex);
}
}
}
List<ConditionHandler> conditionHandlers;
if (conditionHandling.getHandlerFactories() == null
|| conditionHandling.getHandlerFactories().isEmpty()) {
conditionHandlers = Collections.emptyList();
} else {
conditionHandlers = new ArrayList<ConditionHandler>();
ConditionHandlerFactoryContext context = new ConditionHandlerFactoryContext(engineURI);
for (String className : conditionHandling.getHandlerFactories()) {
try {
ConditionHandlerFactory factory =
(ConditionHandlerFactory)
JavaClassHelper.instantiate(ConditionHandlerFactory.class, className);
ConditionHandler handler = factory.getHandler(context);
if (handler == null) {
log.warn(
"Condition handler factory '"
+ className
+ "' returned a null handler, skipping factory");
continue;
}
conditionHandlers.add(handler);
} catch (RuntimeException ex) {
throw new ConfigurationException(
"Exception initializing exception handler from exception handler factory '"
+ className
+ "': "
+ ex.getMessage(),
ex);
}
}
}
return new ExceptionHandlingService(engineURI, exceptionHandlers, conditionHandlers);
}