package org.apache.bsf.engines.javascript;
import javax.script.GenericScriptContext;
import javax.script.ScriptContext;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineFactory;
/**
* RhinoScriptEngine contains methods which can be used to get
* information on describing the RhinoScriptEngine -- an
* implementation of ScriptEngine for JavaScripts.
*
* @author Nandika Jayawardana <nandika@opensource.lk>
* @author Sanka Samaranayake <sanka@opensource.lk>
*/
public class RhinoScriptEngineFactory implements ScriptEngineFactory {
private ScriptEngine rhinoEngine;
private ScriptContext scriptContext;
/**
* Consturcts a RhinoScriptEngineFactory.
*/
public RhinoScriptEngineFactory() {
}
/**
* Retrieves an uninitialized ScriptContext which can be used
* with all ScriptEngines associated with the Factory.
*
* @return an uninitialized ScriptContext
*/
public ScriptContext getContext() {
return new GenericScriptContext();
}
/**
* Retrieves a new instance of Rhino Engine.
*
* @return a new instance of RhinoScriptEngine
*/
public ScriptEngine getScriptEngine() {
return new RhinoScriptEngine();
}
/**
* Retrieves the full name of the 'Rhino Engine'
*
* @return the full name of the Rhino Engine
*/
public String getEngineName() {
return "RhinoScriptEngine";
}
/**
* Retrieves a the version of the Rhino Engine.
*
* @return the version of the Rhino Engine
*/
public String getEngineVersion() {
return "1.0";
}
/**
* Retrieves an array of strings discribing the extensions
* supported by the Rhino Engine.
*
* @return a String array describing the supported extensions
*/
public String[] getExtensions() {
return new String[]{"js", "jss"};
}
/**
* Retrieves the name of the language supported by the
* Rhino Engine. .. 'javascript' obviously ..
*
* @return the name of the supported language
*/
public String getLanguageName() {
return "javascript";
}
/**
* Retrieves the javascript version supported by the Rhino Engine.
*
* @return the version of the supported language.
*/
public String getLanguageVersion() {
return "1.5";
}
/**
* Retrieves an array of Strings describing the MIME types
* supported by the Rhino Engine.
*
* @return an array of Strings describing the supported MIME
* types
*/
public String[] getMimeTypes() {
return new String[]{};
}
/**
* Retrieves an array of Strings which can be used as
* descriptives of the Rhino Engine.
*
* @return an array of descriptives of the Rhino Engine
*/
public String[] getName() {
return new String[]{"javascript","rhino"};
}
/**
* Retrieves an associated value for the specified key. Returns
* null if the ScriptEngine does not have an associated value for
* the key.
*
* @return associated value for the specified key
*/
public Object getParameter(Object key) {
if (key == ScriptEngine.ENGINE) {
return getEngineName();
} else if (key == ScriptEngine.ENGINE_VERSION) {
return getEngineVersion();
} else if (key == ScriptEngine.NAME) {
return getName();
} else if (key == ScriptEngine.LANGUAGE) {
return getLanguageName();
} else if(key == ScriptEngine.ENGINE_VERSION) {
return getLanguageVersion();
} else if (key == "THREADING") {
return "MULTITHREADED";
} else {
return null;
}
}
}