Scripting Events

Described are the constants and properties related to the OSGi Script Engine Manager events.

Overview

OSGi Script Engine Manager uses OSGi EventAdmin service to publish asynchronously events on Script Engine appearance and disappearance.

Each event contains properties describing the meta-type of the given Script Engine.

The ScriptingEventConstants interface defines a set of constants related to OSGi Script Engine Manager events.

Event Topic Constants

• Constant defining the package of the event, used in the event topic. See SCRIPTING_PACKAGE.

  String SCRIPTING_PACKAGE = "com/prosyst/mbs/services/scripting/ScriptingEvent/";

• Constant that could be used for subscription for all the Scripting event topics. See TOPIC_ALL.

  String TOPIC_ALL = SCRIPTING_PACKAGE + "*";

• Constant for event topic that denotes that new Script Engine is registered (appeared) in the system. See TOPIC_ENGINE_APPEARED.

  String TOPIC_ENGINE_APPEARED = SCRIPTING_PACKAGE + "ENGINE_APPEARED";

• Constant for event topic that denotes that a Script Engine is unregistered (disappeared) from the system. See TOPIC_ENGINE_DISAPPEARED.

  String TOPIC_ENGINE_DISAPPEARED = SCRIPTING_PACKAGE + "ENGINE_DISAPPEARED".

Script Engine Meta-Type Property Constants

• Constant defining the event property for scripting engine name. This property corresponds to the value returned by javax.script.ScriptEngineFactory.getEngineName() method. See PROPERTY_ENGINE_NAME.

  String PROPERTY_ENGINE_NAME = "property.engine.name";

• Constant defining the event property for scripting engine version. This property corresponds to the value returned by javax.script.ScriptEngineFactory.getEngineVersion() method. See PROPERTY_ENGINE_VERSION.

  String PROPERTY_ENGINE_VERSION = "property.engine.version";

• Constant defining the event property for scripting language name. This property corresponds to the value returned by javax.script.ScriptEngineFactory.getLanguageName() method. See PROPERTY_LANGUAGE_NAME.

  String PROPERTY_LANGUAGE_NAME = "property.language.name";

• Constant defining the event property for scripting language version. This property corresponds to the value returned by javax.script.ScriptEngineFactory.getLanguageVersion() method. See PROPERTY_LANGUAGE_VERSION.

  String PROPERTY_LANGUAGE_VERSION = "property.language.version";

• Constant defining the event property for scripting engine short names. This property corresponds to the value returned by javax.script.ScriptEngineFactory.getNames() method. See PROPERTY_NAMES.

  String PROPERTY_NAMES = "property.names";

• Constant defining the event property for scripting engine supported mime-types. This property corresponds to the value returned by javax.script.ScriptEngineFactory.getMimeTypes() method. See PROPERTY_MIME_TYPES.

  String PROPERTY_MIME_TYPES = "property.mime.types";

• Constant defining the event property for scripting engine supported extensions. This property corresponds to the value returned by javax.script.ScriptEngineFactory.getExtensions() method. See PROPERTY_EXTENSIONS.

  String PROPERTY_EXTENSIONS = "property.extensions".

Nashorn Script Engine Events Examples

• Event properties for Nashorn Script Engine appearance event.

  Name	Value
  property.language.name	ECMAScript
  property.engine.version	1.8.0_112
  property.names	[nashorn, Nashorn, js, JS, JavaScript, javascript, ECMAScript, ecmascript]
  event.topics	com/prosyst/mbs/services/scripting/ScriptingEvent/ENGINE_APPEARED
  property.engine.name	Oracle Nashorn
  property.language.version	ECMA - 262 Edition 5.1
  property.mime.types	[application/javascript, application/ecmascript, text/javascript, text/ecmascript]
  property.extensions	[js]

• Event properties for Nashorn Script Engine disappearance event.

  Name	Value
  property.language.name	ECMAScript
  property.engine.version	1.8.0_112
  property.names	[nashorn, Nashorn, js, JS, JavaScript, javascript, ECMAScript, ecmascript]
  event.topics	com/prosyst/mbs/services/scripting/ScriptingEvent/ENGINE_DISAPPEARED
  property.engine.name	Oracle Nashorn
  property.language.version	ECMA - 262 Edition 5.1
  property.mime.types	[application/javascript, application/ecmascript, text/javascript, text/ecmascript]
  property.extensions	[js]