Package org.apache.commons.jelly.expression

Examples of org.apache.commons.jelly.expression.Expression.evaluate()


        {
            ExpressionSupport expr = new ExpressionSupport()
            {
                public Object evaluate( JellyContext context )
                {
                    Object answer = jexlExpression.evaluate( context );

                    if ( answer == null )
                    {
                        answer = context.getVariable( text );
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        if ( value instanceof Expression )
        {
            // TODO: need to handle instances of infinitely recursion when an expression contains itself
            Expression expression = (Expression) value;
            value = expression.evaluate( this );
        }

        return value;
    }
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    }   
   
    /** Evaluates the given expression text and tests it against the expected value */
    protected void assertExpression( String expressionText, Object expectedValue ) throws Exception {
        Expression expr = factory.createExpression( expressionText );
        Object value = expr.evaluate( context );
        assertEquals( "Value of expression: " + expressionText, expectedValue, value );
    }       
}

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            );

        if ( isSupportAntVariables() && isValidAntVariableName(text) ) {
            ExpressionSupport expr = new ExpressionSupport() {
                    public Object evaluate(JellyContext context) {
                        Object answer = jexlExpression.evaluate(context);

                        if ( answer == null ) {
                            answer = context.getVariable(text);
                        }
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            for (Iterator iter = attributes.entrySet().iterator(); iter.hasNext();) {
                Map.Entry entry = (Map.Entry) iter.next();
                String name = (String) entry.getKey();
                Expression expression = (Expression) entry.getValue();
   
                Object value = expression.evaluate(context);
                dynaTag.setAttribute(name, value);
            }
       
            tag.doTag(output);
        }
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                for (Iterator iter = attributes.entrySet().iterator(); iter.hasNext();) {
                    Map.Entry entry = (Map.Entry) iter.next();
                    String name = (String) entry.getKey();
                    Expression expression = (Expression) entry.getValue();
       
                    Object value = expression.evaluate(context);
                    dynaTag.setAttribute(name, value);
                }
            }
            else {
                // treat the tag as a bean
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                for (Iterator iter = attributes.entrySet().iterator(); iter.hasNext();) {
                    Map.Entry entry = (Map.Entry) iter.next();
                    String name = (String) entry.getKey();
                    Expression expression = (Expression) entry.getValue();
       
                    Object value = expression.evaluate(context);
                    dynaBean.set(name, value);
                }
            }
       
            tag.doTag(output);
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                }
                // lets get the default value
                Object value = null;
                Expression expression = attribute.getDefaultValue();
                if ( expression != null ) {
                    value = expression.evaluate(context);
                }
               
                // only set non-null values?
                if ( value != null ) {
                    super.setAttribute(name, value);
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            Object value = null;
            if (type.isAssignableFrom(Expression.class) && !type.isAssignableFrom(Object.class)) {
                value = expression;
            }
            else {
                value = expression.evaluate(context);
            }
            // convert value to correct type
            if (value != null) {
                value = convertType(value, type);
            }           
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                }
                // lets get the default value
                Object value = null;
                Expression expression = attribute.getDefaultValue();
                if ( expression != null ) {
                    value = expression.evaluate(context);
                }
               
                // only set non-null values?
                if ( value != null ) {
                    super.setAttribute(name, value);
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