Java Code Examples for org.mozilla.javascript.Context#javaToJS()

protected void executeScript( final Map<String, Object> params ) {
  final Context cx = Context.getCurrentContext();
  // env.js has methods that pass the 64k Java limit, so we can't compile
  // to bytecode. Interpreter mode to the rescue!
  cx.setOptimizationLevel( -1 );
  cx.setLanguageVersion( Context.VERSION_1_7 );

  final Object wrappedParams;
  if ( params != null ) {
    wrappedParams = Context.javaToJS( params, scope );
  } else {
    wrappedParams = Context.javaToJS( new HashMap<String, Object>(), scope );
  }

  try {
    ScriptableObject.defineProperty( scope, "params", wrappedParams, 0 );
    cx.evaluateReader( scope, new FileReader( source ), this.source, 1, null );
  } catch ( IOException ex ) {
    logger.error( "Failed to read " + source + ": " + ex.toString() );
  }
}
 

private void importVariables(@NonNull ScriptableObject scope) throws StethoJsException {
  // Define the variables
  for (Map.Entry<String, Object> entrySet : mVariables.entrySet()) {
    String varName = entrySet.getKey();
    Object varValue = entrySet.getValue();
    try {
      Object jsValue;
      if (varValue instanceof Scriptable || varValue instanceof Undefined) {
        jsValue = varValue;
      } else {
        jsValue = Context.javaToJS(varValue, scope);
      }
      ScriptableObject.putProperty(scope, varName, jsValue);
    } catch (Exception e) {
      throw new StethoJsException(e, "Failed to setup variable: %s", varName);
    }
  }
}
 

@Override
public @Nullable Object evaluate(@NonNull String expression) throws Throwable {
    Object result;
    final Context jsContext = enterJsContext();
    try {
      result = jsContext.evaluateString(mJsScope, expression, "chrome", 1, null);

      // Google chrome automatically saves the last expression to `$_`, we do the same
      Object jsValue = Context.javaToJS(result, mJsScope);
      ScriptableObject.putProperty(mJsScope, "$_", jsValue);
    } finally {
      Context.exit();
    }

    return Context.jsToJava(result, Object.class);
}
 

public static Object _loadSvg( final Context cx, final Scriptable thisObj,
                               final Object[] args, final Function funObj ) {

  final String file = args[ 0 ].toString();
  try {
    final BaseScope scope = (BaseScope) thisObj;
    final String parser = "org.apache.xerces.parsers.SAXParser"; //XMLResourceDescriptor.getXMLParserClassName();
    final SAXSVGDocumentFactory f = new SAXSVGDocumentFactory( parser );
    final String uri = "file:" + scope.basePath + "/" + file;
    final SVGOMDocument doc = (SVGOMDocument) f.createDocument( uri );

    // Initialize the CSS Engine for the document
    final SVGDOMImplementation impl = (SVGDOMImplementation) SVGDOMImplementation.getDOMImplementation();
    final UserAgent userAgent = new UserAgentAdapter();
    final BridgeContext ctx = new BridgeContext( userAgent, new DocumentLoader( userAgent ) );
    doc.setCSSEngine( impl.createCSSEngine( doc, ctx ) );

    return Context.javaToJS( doc, scope );
  } catch ( Exception e ) {
    e.printStackTrace();
    logger.error( e );
    return Context.getUndefinedValue();
  }
}
 

@Test
   public void testIrr( )
{
	//use double array to test this case
	double a[] = new double[]{-70000, 12000, 15000};
	Object jsNumber=Context.javaToJS(a,scope);
	ScriptableObject.putProperty(scope,"array",jsNumber);
	String script4="Finance.irr( array, -0.6 )";
	double value4 = eval( script4 );
	assertEquals( -0.44, value4, 0.01 );
	
	String script1 = "var array=new Array(6);array[0]=-70000;array[1]=12000;"
			+ "array[2]=15000;array[3]=18000;array[4]=21000;array[5]=26000;"
			+ "Finance.irr( array, 0.01)";
	double value1 = eval( script1 );
	assertEquals( 0.0866, value1, 0.0001 );
	String script2 = "var array=new Array(5);array[0]=-70000;array[1]=12000;array[2]=15000;array[3]=18000;array[4]=21000;Finance.irr(array, -0.1 )";
	double value2 = eval( script2 );
	assertEquals( -0.021244848273899997, value2, Double.MIN_VALUE );
	String script3 = "var array=new Array(3);array[0]=-70000;array[1]=12000;array[2]=15000;Finance.irr(array, -0.6 )";
	double value3 = eval( script3 );
	assertEquals( -0.44, value3, 0.01 );
	assertFalse( hasException );

}
 

/**
 * Registers a new variable to current JavaScript context. If the name
 * already exists, it'll be overwritten.
 * 
 * @param sVarName
 * @throws ChartException
 */
public final void registerVariable( String sVarName, Object var )
		throws ChartException
{
	Context.enter( );

	try
	{
		final Object oConsole = Context.javaToJS( var, scope );
		scope.put( sVarName, scope, oConsole );
	}
	finally
	{
		Context.exit( );
	}
}
 

/**
 * converts a tuple to javascript object based on a schema
 * @param tuple the tuple to convert
 * @param schema the schema to use for conversion
 * @param depth call depth used for debugging messages
 * @return the resulting javascript object 
 */
@SuppressWarnings("unchecked")
private Scriptable pigTupleToJS(Tuple tuple, Schema schema, int depth) throws FrontendException, ExecException {
    debugConvertPigToJS(depth, "Tuple", tuple, schema);
    Scriptable object = null;
    if (tuple != null) {
        object = jsScriptEngine.jsNewObject(); 

        for (int i = 0; i < schema.size(); i++) {
            FieldSchema field = schema.getField(i);
            Object value;
            if (field.type == DataType.BAG) {
                value = pigBagToJS((DataBag)tuple.get(i), field.schema, depth + 1);
            } else if (field.type == DataType.TUPLE) {
                value = pigTupleToJS((Tuple)tuple.get(i), field.schema, depth + 1);
            } else if (field.type == DataType.MAP) {
                value = pigMapToJS((Map<String, Object>)tuple.get(i), field.schema, depth + 1);
            } else {
                debugConvertPigToJS(depth+1, "value", tuple.get(i), field.schema);
                value = Context.javaToJS(tuple.get(i), jsScriptEngine.getScope());
                debugReturn(depth + 1, value);
            }
            object.put(field.alias, object, value);
        }
    }
    debugReturn(depth, object);
    return object;
}
 

public void initializeObjects() {
  final Context context = ContextFactory.getGlobal().enterContext();
  try {
    final Object wrappedFactory = Context.javaToJS( new DatasourceFactory(), scope );
    ScriptableObject.putProperty( scope, "datasourceFactory", wrappedFactory );
  } finally {
    context.exit();
  }
}
 

/**
 * @param name
 *            the name of a property
 * @param value
 *            the value of a property
 */
public void setAttribute( String name, Object value )
{
	value = wrap(scope, name, value);
	Object jsValue = Context.javaToJS( value, scope );
	scope.put( name, scope, jsValue );
}
 

Object evaluateTestConfig(Reader reader, String desc) throws IOException {
    Global scope = jsConfigParser.createGlobalScope();

    Object wrappedContext = Context.javaToJS(this, scope);
    Map jsProperties = Maps.newHashMap();
    jsProperties.put("testConfigurationParser", wrappedContext);
    jsConfigParser.putPropertiesInScope(jsProperties, scope);

    InputStream scripts = getClass().getResourceAsStream("celos-ci-scripts.js");
    jsConfigParser.evaluateReader(scope, new InputStreamReader(scripts), "celos-ci-scripts.js");
    return jsConfigParser.evaluateReader(scope, reader, desc);
}
 

/**
 * Initialize the JavaScript context using given parent scope.
 * 
 * @param scPrototype
 *            Parent scope object. If it's null, use default scope.
 */
public final void init( Scriptable scPrototype ) throws ChartException
{
	final Context cx = Context.enter( );
	try
	{
		if ( scPrototype == null ) // NO PROTOTYPE
		{
			// scope = cx.initStandardObjects();
			scope = new ImporterTopLevel( cx );
		}
		else
		{
			scope = cx.newObject( scPrototype );
			scope.setPrototype( scPrototype );
			// !don't reset the parent scope here.
			// scope.setParentScope( null );
		}

		// final Scriptable scopePrevious = scope;
		// !deprecated, remove this later. use script context instead.
		// registerExistingScriptableObject( this, "chart" ); //$NON-NLS-1$
		// scope = scopePrevious; // RESTORE

		// !deprecated, remove this later, use logger from script context
		// instead.
		// ADD LOGGING CAPABILITIES TO JAVASCRIPT ACCESS
		final Object oConsole = Context.javaToJS( getLogger( ), scope );
		scope.put( "logger", scope, oConsole ); //$NON-NLS-1$
	}
	catch ( RhinoException jsx )
	{
		throw convertException( jsx );
	}
	finally
	{
		Context.exit( );
	}
}
 

/**
 * Make a scope in the current context with our required global variables in it
 *
 * @param ctx the current Rhino context
 * @return the new scope
 */
protected Scriptable makeAcceptFacetScope(final Context ctx) {
    final Scriptable scope = ctx.initStandardObjects();
    final Object jsLogger = Context.javaToJS(this.scriptLogger, scope);
    ScriptableObject.putProperty(scope, "logger", jsLogger);
    final Object jsOut = Context.javaToJS(System.out, scope);
    ScriptableObject.putProperty(scope, "out", jsOut);
    return scope;
}
 

Object javaToJS(Object o, Scriptable scope)
{
	Class<?> cls = o.getClass();
	if (cls.isArray())
	{
		return new NativeArray((Object[]) o);
	}

	return Context.javaToJS(o, scope);
}
 

protected LegacyDataRowWrapper initializeScope( final Scriptable scope ) {
  final LegacyDataRowWrapper dataRowWrapper = new LegacyDataRowWrapper();
  dataRowWrapper.setParent( getRuntime().getDataRow() );
  final Object wrappedDataRow = Context.javaToJS( dataRowWrapper, scope );
  ScriptableObject.putProperty( scope, "dataRow", wrappedDataRow ); // NON-NLS
  return dataRowWrapper;
}
 

Object evaluateReader(Reader r, String fileName, StateDatabaseConnection connection) throws Exception {

        Global scope = jsConfigParser.createGlobalScope();

        Object wrappedThis = Context.javaToJS(this, scope);
        Map jsProperties = Maps.newHashMap(additionalJsVariables);
        jsProperties.put("celosWorkflowConfigurationParser", wrappedThis);
        jsProperties.put("celosConnection", connection);

        jsConfigParser.putPropertiesInScope(jsProperties, scope);

        InputStream scripts = WorkflowConfigurationParser.class.getResourceAsStream(CELOS_SCRIPTS_FILENAME);
        jsConfigParser.evaluateReader(scope, new InputStreamReader(scripts), CELOS_SCRIPTS_FILENAME);

        return jsConfigParser.evaluateReader(scope, r, fileName);
    }
 

private void throwError(String errorName) {
    LOG.info("Javascript throw: " + errorName);
    throw new JavaScriptException(Context.javaToJS(errorName, getParentScope()), "XMLHttpRequest", 0);
}
 

private Object javaToJs( Object value, Scriptable scope )
{
	return Context.javaToJS( value, scope );
}
 

@Test
   public void testSubTime( )
{
	Calendar dateCal = getCalendarInstance( );
	dateCal.set( 2008, 8, 13, 20, 1, 44 );
	Date date1 = dateCal.getTime( );
	Object jsNumber1 = Context.javaToJS( date1, scope );
	ScriptableObject.putProperty( scope, "date1", jsNumber1 );
	String script1 = "DateTimeSpan.subTime(date1,-1,-1,-1);";
	Object value1 = eval( script1 );
	Calendar cal = getCalendarInstance( );
	cal.setTime( (Date) value1 );
	assertEquals( 2008, cal.get( Calendar.YEAR ) );
	assertEquals( 8, cal.get( Calendar.MONTH ) );
	assertEquals( 13, cal.get( Calendar.DATE ) );
	assertEquals( 21, cal.get( Calendar.HOUR_OF_DAY ) );
	assertEquals( 2, cal.get( Calendar.MINUTE ) );
	assertEquals( 45, cal.get( Calendar.SECOND ) );
	System.out.println( "1" );
	

	/*
	 * More than 24 hours
	 */
	String script2 = "DateTimeSpan.subTime(date1,-25,-1,-1);";
	Object value2 = eval( script2 );
	cal = getCalendarInstance( );
	cal.setTime( (Date) value2 );
	assertEquals( 2008, cal.get( Calendar.YEAR ) );
	assertEquals( 8, cal.get( Calendar.MONTH ) );
	assertEquals( 14, cal.get( Calendar.DATE ) );
	assertEquals( 21, cal.get( Calendar.HOUR_OF_DAY ) );
	assertEquals( 2, cal.get( Calendar.MINUTE ) );
	assertEquals( 45, cal.get( Calendar.SECOND ) );
	System.out.println( "2" );
	
	/*
	 * Add negtive arguments.
	 */
	String script5 = "DateTimeSpan.subTime(date1,1,1,1);";
	Object value5 = eval( script5 );
	cal = getCalendarInstance( );
	cal.setTime( (Date) value5 );
	assertEquals( 2008, cal.get( Calendar.YEAR ) );
	assertEquals( 8, cal.get( Calendar.MONTH ) );
	assertEquals( 13, cal.get( Calendar.DATE ) );
	assertEquals( 19, cal.get( Calendar.HOUR_OF_DAY ) );
	assertEquals( 0, cal.get( Calendar.MINUTE ) );
	assertEquals( 43, cal.get( Calendar.SECOND ) );
	System.out.println( "5" );
	
	String script6 = "DateTimeSpan.subTime(date1,1,1,61);";
	Object value6 = eval( script6 );
	cal = getCalendarInstance( );
	cal.setTime( (Date) value6 );
	assertEquals( 2008, cal.get( Calendar.YEAR ) );
	assertEquals( 8, cal.get( Calendar.MONTH ) );
	assertEquals( 13, cal.get( Calendar.DATE ) );
	assertEquals( 18, cal.get( Calendar.HOUR_OF_DAY ) );
	assertEquals( 59, cal.get( Calendar.MINUTE ) );
	assertEquals( 43, cal.get( Calendar.SECOND ) );
	System.out.println( "6" );
	
}
 

public Object javaToJS(Object value) {
    return Context.javaToJS(value, rhinoScope);
}
 

@Test
   public void testSeconds( )
{
	/*
	 * Just one second.
	 */
	Calendar dateCal = getCalendarInstance( );
	dateCal.set( 2008, 8, 13, 20, 1, 44 );
	Date date1 = dateCal.getTime( );
	Object jsNumber1 = Context.javaToJS( date1, scope );
	ScriptableObject.putProperty( scope, "date1", jsNumber1 );

	dateCal = getCalendarInstance( );
	dateCal.set( 2008, 8, 13, 20, 1, 45 );
	Date date2 = dateCal.getTime( );
	Object jsNumber2 = Context.javaToJS( date2, scope );
	ScriptableObject.putProperty( scope, "date2", jsNumber2 );
	String script1 = "DateTimeSpan.seconds(date1,date2)";
	Object value1 = eval( script1 );
	if ( value1 instanceof Integer )
		assertEquals( 1, ( (Integer) value1 ).intValue( ) );

	/*
	 * Just one second off one minute
	 */
	dateCal = getCalendarInstance( );
	dateCal.set( 2008, 8, 13, 20, 1, 45 );
	Date date3 = dateCal.getTime( );
	Object jsNumber3 = Context.javaToJS( date3, scope );
	ScriptableObject.putProperty( scope, "date3", jsNumber3 );

	dateCal = getCalendarInstance( );
	dateCal.set( 2008, 8, 13, 20, 2, 44 );
	Date date4 = dateCal.getTime( );
	Object jsNumber4 = Context.javaToJS( date4, scope );
	ScriptableObject.putProperty( scope, "date4", jsNumber4 );
	String script2 = "DateTimeSpan.seconds(date3,date4)";
	Object value2 = eval( script2 );
	if ( value2 instanceof Integer )
		assertEquals( 59, ( (Integer) value2 ).intValue( ) );

	/*
	 * Just one second over one minute
	 */
	dateCal = getCalendarInstance( );
	dateCal.set( 2008, 8, 13, 20, 1, 45 );
	Date date5 = dateCal.getTime( );
	Object jsNumber5 = Context.javaToJS( date5, scope );
	ScriptableObject.putProperty( scope, "date5", jsNumber5 );

	dateCal = getCalendarInstance( );
	dateCal.set( 2008, 8, 13, 20, 2, 46 );
	Date date6 = dateCal.getTime( );
	Object jsNumber6 = Context.javaToJS( date6, scope );
	ScriptableObject.putProperty( scope, "date6", jsNumber6 );
	String script3 = "DateTimeSpan.seconds(date5,date6)";
	Object value3 = eval( script3 );
	if ( value3 instanceof Integer )
		assertEquals( 61, ( (Integer) value3 ).intValue( ) );

	/*
	 * In leap year
	 */
	dateCal = getCalendarInstance( );
	dateCal.set( 2008, 1, 28, 20, 1, 45 );
	Date date7 = dateCal.getTime( );
	Object jsNumber7 = Context.javaToJS( date7, scope );
	ScriptableObject.putProperty( scope, "date7", jsNumber7 );

	dateCal = getCalendarInstance( );
	dateCal.set( 2008, 2, 1, 20, 1, 45 );
	Date date8 = dateCal.getTime( );
	Object jsNumber8 = Context.javaToJS( date8, scope );
	ScriptableObject.putProperty( scope, "date8", jsNumber8 );
	String script4 = "DateTimeSpan.seconds(date7,date8)";
	Object value4 = eval( script4 );
	if ( value4 instanceof Integer )
		assertEquals( 172800, ( (Integer) value4 ).intValue( ) );

	/*
	 * In the same hour, and the first second is more than the second one.
	 */
	dateCal = getCalendarInstance( );
	dateCal.set( 2008, 1, 28, 20, 6, 45 );
	Date date9 = dateCal.getTime( );
	Object jsNumber9 = Context.javaToJS( date9, scope );
	ScriptableObject.putProperty( scope, "date9", jsNumber9 );

	dateCal = getCalendarInstance( );
	dateCal.set( 2008, 1, 28, 21, 5, 40 );
	Date date10 = dateCal.getTime( );
	Object jsNumber10 = Context.javaToJS( date10, scope );
	ScriptableObject.putProperty( scope, "date10", jsNumber10 );
	String script5 = "DateTimeSpan.seconds(date9,date10)";
	Object value5 = eval( script5 );
	if ( value5 instanceof Integer )
		assertEquals( 3535, ( (Integer) value5 ).intValue( ) );
}