Examples of javax.servlet.jsp.el.ExpressionEvaluator.evaluate()

Class javax.servlet.jsp.el.ExpressionEvaluator

Examples of javax.servlet.jsp.el.ExpressionEvaluator.evaluate()

javax.servlet.jsp.el.ExpressionEvaluator.evaluate()
Evaluates an expression. This method may perform some syntactic validation and, if so, it should raise an ELParseException error if it encounters syntactic errors. EL evaluation errors should cause an ELException to be raised. @param expression The expression to be evaluated. @param expectedType The expected type of the result of the evaluation @param vResolver A VariableResolver instance that can be used at runtime to resolve the name of implicit objects into Objects. @param fMapper A FunctionMapper to resolve functions found in the expression. It can be null, in which case no functions are supported for this invocation. @return The result of the expression evaluation. @exception ELException Thrown if the expression evaluation failed.

        String string = super.getValue();


        ExpressionEvaluator eval = pageContext.getExpressionEvaluator();


        try {
            Object evaluated = eval.evaluate(
                    string,
                    Object.class,
                    pageContext.getVariableResolver(),
                    null
            );

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        String string = super.getValue();


        ExpressionEvaluator eval = pageContext.getExpressionEvaluator();


        try {
            Object evaluated = eval.evaluate(
                    string,
                    Object.class,
                    pageContext.getVariableResolver(),
                    null
            );

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    private static final Object evaluate(String expression, Class expectedType, Object actionForm, HttpServletRequest request, ServletContext servletContext)
        throws ELException
    {
        // todo: can this be static / final?
        ExpressionEvaluator ee = getExpressionEvaluator();
        return ee.evaluate(expression, expectedType, getVariableResolver(actionForm, request, servletContext), null);
    }


    private static final ExpressionEvaluator getExpressionEvaluator()
    {
        return new ExpressionEvaluatorImpl();

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  public void handle(String data, ContentHandler handler) {
    ExpressionEvaluator evaluator = new ExpressionEvaluatorImpl();
    Object value;


    try {
      value = evaluator.evaluate(data, Object.class, resolver, mapper);


      if (value != null) {
        char[] result = value.toString().toCharArray();
        handler.characters(result, 0, result.length);
      } else {

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    private static final Object evaluate(String expression, Class expectedType, Object actionForm, HttpServletRequest request, ServletContext servletContext)
        throws ELException
    {
        // todo: can this be static / final?
        ExpressionEvaluator ee = getExpressionEvaluator();
        return ee.evaluate(expression, expectedType, getVariableResolver(actionForm, request, servletContext), null);
    }


    private static final ExpressionEvaluator getExpressionEvaluator()
    {
        return new ExpressionEvaluatorImpl();

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     */
    private Object convertToExpectedType( final Object value,
    Class expectedType )
    throws javax.servlet.jsp.el.ELException {
        ExpressionEvaluator evaluator = pageContext.getExpressionEvaluator();
        return evaluator.evaluate( "${result}", expectedType,
        new VariableResolver() {
            public Object resolveVariable( String pName )
            throws ELException {
                return value;
            }

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            if ((uriText.getText().length() == 0) && !editingDefault) {
                throw ValidationException.required(uriText, "Please enter a URL.");
            }
            ExpressionEvaluator eval = new ExpressionEvaluatorImpl();
            try {
                eval.evaluate((String) nameText.getText(), String.class, new DefaultVariables(),
                              StaticFunctionMapper.getDefault());
            } catch (Exception e) {
                throw ValidationException.invalid(nameText, "Error evaluating EL expression:\n" + e.getMessage());
            }
            try {

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                              StaticFunctionMapper.getDefault());
            } catch (Exception e) {
                throw ValidationException.invalid(nameText, "Error evaluating EL expression:\n" + e.getMessage());
            }
            try {
                eval.evaluate((String) uriText.getText(), String.class, new DefaultVariables(),
                              StaticFunctionMapper.getDefault());
            } catch (Exception e) {
                throw ValidationException.invalid(uriText, "Error evaluating EL expression:\n" + e.getMessage());
            }

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    public void actionPerformed(ActionEvent ev) {
      try {
        StaticFunctionMapper functionMapper = StaticFunctionMapper.getDefault();
        ExpressionEvaluator eval = new ExpressionEvaluatorImpl();
        VariableResolver resolver = new DefaultVariables(uriText.getText(), null, null);
        resultText.setText((String) eval.evaluate(elText.getText(), String.class, resolver, functionMapper));
      } catch (ELException e) {
        ExceptionDialog.show(TestingTool.this, e);
      }
    }
  }

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    public String evaluate(String value, PageContext pageContext) throws JspException {
        ExpressionEvaluator eval = pageContext.getExpressionEvaluator();


        try {
            Object evaluated = eval.evaluate(
                    value,
                    Object.class,
                    pageContext.getVariableResolver(),
                    null
            );

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