/**
* Ctor.
*
* @param typeName is the event type name
* @param eventType is the event type of the wrapped events
* @param properties is the additional properties this wrapper adds
* @param metadata event type metadata
* @param eventAdapterService is the service for resolving unknown wrapped types
*/
public WrapperEventType(
EventTypeMetadata metadata,
String typeName,
int eventTypeId,
EventType eventType,
Map<String, Object> properties,
EventAdapterService eventAdapterService) {
checkForRepeatedPropertyNames(eventType, properties);
this.metadata = metadata;
this.underlyingEventType = eventType;
EventTypeMetadata metadataMapType = EventTypeMetadata.createAnonymous(typeName);
this.underlyingMapType =
new MapEventType(
metadataMapType, typeName, 0, eventAdapterService, properties, null, null, null);
this.isNoMapProperties = properties.isEmpty();
this.eventAdapterService = eventAdapterService;
this.eventTypeId = eventTypeId;
propertyGetterCache = new HashMap<String, EventPropertyGetter>();
updatePropertySet();
if (metadata.getTypeClass() == EventTypeMetadata.TypeClass.NAMED_WINDOW) {
startTimestampPropertyName = eventType.getStartTimestampPropertyName();
endTimestampPropertyName = eventType.getEndTimestampPropertyName();
EventTypeUtility.validateTimestampProperties(
this, startTimestampPropertyName, endTimestampPropertyName);
}
}
/**
* Set the preconfigured event properties resolved by XPath expression.
*
* @param explicitXPathProperties are preconfigured event properties
* @param additionalSchemaProperties the explicit properties
*/
protected void initialize(
Collection<ConfigurationEventTypeXMLDOM.XPathPropertyDesc> explicitXPathProperties,
List<ExplicitPropertyDescriptor> additionalSchemaProperties) {
// make sure we override those explicitly provided with those derived from a metadataz
Map<String, ExplicitPropertyDescriptor> namedProperties =
new LinkedHashMap<String, ExplicitPropertyDescriptor>();
for (ExplicitPropertyDescriptor desc : additionalSchemaProperties) {
namedProperties.put(desc.getDescriptor().getPropertyName(), desc);
}
String xpathExpression = null;
try {
for (ConfigurationEventTypeXMLDOM.XPathPropertyDesc property : explicitXPathProperties) {
XPath xPath = xPathFactory.newXPath();
if (namespaceContext != null) {
xPath.setNamespaceContext(namespaceContext);
}
xpathExpression = property.getXpath();
if (log.isInfoEnabled()) {
log.info(
"Compiling XPath expression for property '"
+ property.getName()
+ "' as '"
+ xpathExpression
+ "'");
}
XPathExpression expression = xPath.compile(xpathExpression);
FragmentFactoryXPathPredefinedGetter fragmentFactory = null;
boolean isFragment = false;
if (property.getOptionaleventTypeName() != null) {
fragmentFactory =
new FragmentFactoryXPathPredefinedGetter(
this.getEventAdapterService(),
property.getOptionaleventTypeName(),
property.getName());
isFragment = true;
}
boolean isArray = false;
if (property.getType().equals(XPathConstants.NODESET)) {
isArray = true;
}
EventPropertyGetter getter =
new XPathPropertyGetter(
property.getName(),
xpathExpression,
expression,
property.getType(),
property.getOptionalCastToType(),
fragmentFactory);
Class returnType =
SchemaUtil.toReturnType(property.getType(), property.getOptionalCastToType());
EventPropertyDescriptor desc =
new EventPropertyDescriptor(
property.getName(), returnType, null, false, false, isArray, false, isFragment);
ExplicitPropertyDescriptor explicit =
new ExplicitPropertyDescriptor(
desc, getter, isArray, property.getOptionaleventTypeName());
namedProperties.put(desc.getPropertyName(), explicit);
}
} catch (XPathExpressionException ex) {
throw new EPException(
"XPath expression could not be compiled for expression '" + xpathExpression + '\'', ex);
}
super.initialize(new ArrayList<ExplicitPropertyDescriptor>(namedProperties.values()));
// evaluate start and end timestamp properties if any
startTimestampPropertyName = configurationEventTypeXMLDOM.getStartTimestampPropertyName();
endTimestampPropertyName = configurationEventTypeXMLDOM.getEndTimestampPropertyName();
EventTypeUtility.validateTimestampProperties(
this, startTimestampPropertyName, endTimestampPropertyName);
}
