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30.3. Utility components
The following components provide various functions that are useful across a broad range of applications.
org.jboss.seam.core.events- An API for raising events that can be observed via
@Observermethods, or method bindings incomponents.xml.raiseEvent(String type)— raises an event of a particular type and distributes it to all observers.raiseAsynchronousEvent(String type)— raises an event to be processed asynchronously by the EJB3 timer service.raiseTimedEvent(String type, ....)— schedules an event to be processed asynchronously by the EJB3 timer service.addListener(String type, String methodBinding)— adds an observer for a particular event type.
org.jboss.seam.core.interpolator- An API for interpolating the values of JSF EL expressions in Strings.
interpolate(String template)— scans the template for JSF EL expressions of the form#{...}and replaces them with their evaluated values.
org.jboss.seam.core.expressions- An API for creating value and method bindings.
createValueBinding(String expression)— creates a value binding object.createMethodBinding(String expression)— creates a method binding object.
org.jboss.seam.core.pojoCache- Manager component for a JBoss Cache
PojoCacheinstance.pojoCache.cfgResourceName— the name of the configuration file. Defaults totreecache.xml.
All of these components are always installed.