Package org.apache.commons.jelly.expression

Examples of org.apache.commons.jelly.expression.Expression

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                // ### probably compiling this to 2 arrays might be quicker and smaller
                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();

                    Class type = dynaTag.getAttributeType(name);
                    Object value = null;
                    if (type != null && type.isAssignableFrom(Expression.class) && !type.isAssignableFrom(Object.class)) {
                        value = expression;
                    }
                    else {
                        value = expression.evaluateRecurse(context);
                    }
                    dynaTag.setAttribute(name, value);
                }
            }
            else {
                // treat the tag as a bean
                DynaBean dynaBean = new ConvertingWrapDynaBean( tag );
                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();

                    DynaProperty property = dynaBean.getDynaClass().getDynaProperty(name);
                    if (property == null) {
                        throw new JellyException("This tag does not understand the '" + name + "' attribute" );
                    }
                    Class type = property.getType();

                    Object value = null;
                    if (type.isAssignableFrom(Expression.class) && !type.isAssignableFrom(Object.class)) {
                        value = expression;
                    }
                    else {
                        value = expression.evaluateRecurse(context);
                    }
                    dynaBean.set(name, value);
                }
            }
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                    // now iterate through through the expressions
                    int size = list.getLength();
                    for (int i = 0; i < size; i++) {
                        String attributeName = list.getLocalName(i);
                        String attributeValue = list.getValue(i);
                        Expression expression =
                            taglib.createExpression(
                                getExpressionFactory(),
                                script,
                                attributeName,
                                attributeValue);
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            // now iterate through through the expressions
            int size = list.getLength();
            for (int i = 0; i < size; i++) {
                String attributeValue = list.getValue(i);
                Expression expression = CompositeExpression.parse(
                        attributeValue, getExpressionFactory()
                    );
                String attrQName = list.getQName(i);
                script.addAttribute(attrQName, expression);
            }
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    /**
     * Adds the text to the current script block parsing any embedded
     * expressions inot ExpressionScript objects.
     */
    protected void addTextScript(String text) throws JellyException {
        Expression expression =
            CompositeExpression.parse(text, getExpressionFactory());

        addExpressionScript(script, expression);
    }
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        }

        return new JexlExpression( expr );
*/

        Expression jexlExpression = null;
        try {
            // this method really does throw Exception
            jexlExpression = new JexlExpression(
            org.apache.commons.jexl.ExpressionFactory.createExpression(text)
            );
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                if ( attribute.isRequired() ) {
                    throw new MissingAttributeException(name);
                }
                // 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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            // ### probably compiling this to 2 arrays might be quicker and smaller
            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 = null;

                if ( Expression.class.isAssignableFrom( dynaTag.getAttributeType(name) ) ) {
                    value = expression;
                } else {
                    value = expression.evaluate(context);
                }

                dynaTag.setAttribute(name, value);
            }
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                if ( attribute.isRequired() ) {
                    throw new MissingAttributeException(name);
                }
                // 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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                // ### probably compiling this to 2 arrays might be quicker and smaller
                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();

                    Class type = dynaTag.getAttributeType(name);
                    Object value = null;
                    if (type != null && type.isAssignableFrom(Expression.class) && !type.isAssignableFrom(Object.class)) {
                        value = expression;
                    }
                    else {
                        value = expression.evaluateRecurse(context);
                    }
                    dynaTag.setAttribute(name, value);
                }
            }
            else {
                // treat the tag as a bean
                DynaBean dynaBean = new ConvertingWrapDynaBean( tag );
                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();

                    DynaProperty property = dynaBean.getDynaClass().getDynaProperty(name);
                    if (property == null) {
                        throw new JellyException("This tag does not understand the '" + name + "' attribute" );
                    }
                    Class type = property.getType();

                    Object value = null;
                    if (type.isAssignableFrom(Expression.class) && !type.isAssignableFrom(Object.class)) {
                        value = expression;
                    }
                    else {
                        value = expression.evaluateRecurse(context);
                    }
                    dynaBean.set(name, value);
                }
            }
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            if ( log.isDebugEnabled() ) {
                log.debug( "Parsing XPath expression: " + attributeValue );
            }

            // XPath xpath = new Dom4jXPath(attributeValue);
            Expression xpathExpr = super.createExpression( factory,
                                                           tagScript,
                                                           attributeName,
                                                           attributeValue );

            return new XPathExpression(attributeValue, xpathExpr, tagScript);
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Related Classes of org.apache.commons.jelly.expression.Expression

  • hudson.util.jelly.MorphTagLibrary
  • org.apache.commons.jelly.beanshell.TestBeanShellEL
  • org.apache.commons.jelly.expression.jexl.JexlExpressionFactory
  • org.apache.commons.jelly.impl.BeanTagScript
  • org.apache.commons.jelly.impl.DynamicBeanTag
  • org.apache.commons.jelly.impl.DynamicDynaBeanTag
  • org.apache.commons.jelly.impl.DynaTagScript
  • org.apache.commons.jelly.impl.StaticTagScript
  • org.apache.commons.jelly.impl.TagScript
  • org.apache.commons.jelly.parser.XMLParser
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