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com.bea.wlevs.ede.api
Interface EventTypeRepository

public interface EventTypeRepository

extends java.lang.Iterable

EventTypeRepository is a repository for all of the registered event types in the Event Server.

Field Summary

static java.lang.String	SERVICE_FILTER
static java.lang.String	SERVICE_ID

Method Summary
EventType	deregisterEventType(java.lang.String eventType) Remove event type from the repository.
EventType	getEventType(java.lang.Object event) Retrieve the event type for an event object.
EventType	getEventType(java.lang.String name) Retrieve a previously registered even type by name.
EventType	registerEventType(java.lang.String eventType, java.lang.Class supportingClass) Registers POJO event types into repository.
EventType	registerEventType(java.lang.String eventType, java.lang.Class supportingClass, EventBuilder.Factory factory) Registers POJO event types into repository specifying an EventBuilder.Factory for the engine to use when instantiating events of this type.
EventType	registerEventType(java.lang.String eventType, java.util.List tupleSpec) Registers a TupleValue event type.
EventType	registerEventType(java.lang.String eventType, java.util.List tupleSpec, EventBuilder.Factory factory) Similar to #registerEventType(String, Map<String,Class>).
EventType	registerEventType(java.lang.String eventTypeAlias, java.util.Map metadata) Registers Map event types into repository.
EventType	registerEventType(java.lang.String aliasName, java.util.Map metadata, EventBuilder.Factory factory) Registers Map event types into repository specifying an EventBuilder.Factory for the engine to use when instantiating events of this type.

Methods inherited from interface java.lang.Iterable

iterator

Field Detail

SERVICE_ID

public static final java.lang.String SERVICE_ID

SERVICE_FILTER

public static final java.lang.String SERVICE_FILTER

Method Detail

registerEventType

public EventType registerEventType(java.lang.String eventTypeAlias,
                                   java.util.Map metadata)

Registers Map event types into repository. Event types are used by Processors for type checking. For example, the BEA EPL processor references the event type repository during the compilation of EPL queries to perform semantic verification. The event type is defined by a Map of String/Class entries. The String key defines the property name, and the Class value defines the property type.

Parameters:

eventTypeAlias - Event type identifier (e.g. MyEvent, StockEvent)

metadata - Metadata defining event type properties.

Returns:

EventType object representing registered type.

registerEventType

public EventType registerEventType(java.lang.String aliasName,
                                   java.util.Map metadata,
                                   EventBuilder.Factory factory)

Registers Map event types into repository specifying an EventBuilder.Factory for the engine to use when instantiating events of this type. Event types are used by Processors for type checking. For example, the BEA EPL processor references the event type repository during the compilation of EPL queries to perform semantic verification. The event type is defined by a Map of String/Class entries. The String key defines the property name, and the Class value defines the property type.

Parameters:

aliasName - Event type identifier (e.g. MyEvent, StockEvent)

metadata - Metadata defining event type properties.

factory - Factory used by the engine to manufacture events of this type.

Returns:

EventType object representing registered type.

registerEventType

public EventType registerEventType(java.lang.String eventType,
                                   java.lang.Class supportingClass)

Registers POJO event types into repository. Event types are used by Processors for type checking. For example, the BEA EPL processor references the event type repository during the compilation of EPL queries to perform semantic verification. The event type is defined by a class that follows the Java Bean getter/setter conventions. The engine instantiates and invokes the methods via reflection when necessary.

Parameters:

eventType - Event type identifier (e.g. MyEvent, StockEvent)

supportingClass - eventType interface

Returns:

EventType object representing registered type.

registerEventType

public EventType registerEventType(java.lang.String eventType,
                                   java.lang.Class supportingClass,
                                   EventBuilder.Factory factory)

Registers POJO event types into repository specifying an EventBuilder.Factory for the engine to use when instantiating events of this type. Event types are used by Processors for type checking. For example, the BEA EPL processor references the event type repository during the compilation of EPL queries to perform semantic verification. The event type is defined by a class that follows the Java Bean getter/setter conventions. The engine instantiates and invokes the methods via reflection when necessary.

Parameters:

eventType - Event type identifier (e.g. MyEvent, StockEvent)

supportingClass - eventType interface

factory - Factory used by the engine to manufacture events of this type.

Returns:

EventType object representing registered type.

registerEventType

public EventType registerEventType(java.lang.String eventType,
                                   java.util.List tupleSpec)

Registers a TupleValue event type. TupleValues are events used by the CQL processor. The list of EventPropertyDescription elements describe the tuple elements. TODO: Can these be processed by EPL Processor?

Parameters:

eventType - the name or identifier of the EventType

tupleSpec - List of EventPropertyDescription elements that describe the tuple elements

Returns:

the EventType object that was registered within the repository using the parameters passed in

registerEventType

public EventType registerEventType(java.lang.String eventType,
                                   java.util.List tupleSpec,
                                   EventBuilder.Factory factory)

Similar to #registerEventType(String, Map<String,Class>). This also takes in EventBuilder.Factory to create an event of this type.

Parameters:

eventType - the name or identifier of the EventType

tupleSpec - List of EventPropertyDescription elements that describe the tuple elements

factory - EventBuilder.Factory to create an event of this type

Returns:

the EventType object that was registered within the repository using the parameters passed in

getEventType

public EventType getEventType(java.lang.String name)

Retrieve a previously registered even type by name.

Parameters:

name - event type name used when registering the event type

Returns:

EventType representing the event type of the given name.

getEventType

public EventType getEventType(java.lang.Object event)

Retrieve the event type for an event object. The event object may be a JavaBean or a MapEventObject. In either case, an EventType will be returned.

Parameters:

event - event object for which to retrieve the event type

Returns:

EventType representing the event type of the event object parameter.

deregisterEventType

public EventType deregisterEventType(java.lang.String eventType)

Remove event type from the repository.

Parameters:

eventType - Event type identifier (e.g. MyEvent, StockEvent)

Returns:

EventType event type that has been removed from the repository, or null if not present.