Examples with ObjectWrapperAndUnwrapper freemarker.template.ObjectWrapperAndUnwrapper used on opensource projects

Example 1 with ObjectWrapperAndUnwrapper

use of freemarker.template.ObjectWrapperAndUnwrapper in project freemarker by apache.

the class JspTagModelBase method setupTag.

void setupTag(Object tag, Map args, ObjectWrapper wrapper) throws TemplateModelException, InvocationTargetException, IllegalAccessException {
    if (args != null && !args.isEmpty()) {
        ObjectWrapperAndUnwrapper unwrapper = wrapper instanceof ObjectWrapperAndUnwrapper ? (ObjectWrapperAndUnwrapper) wrapper : // [2.4] Throw exception in this case
        BeansWrapper.getDefaultInstance();
        final Object[] argArray = new Object[1];
        for (Iterator iter = args.entrySet().iterator(); iter.hasNext(); ) {
            final Map.Entry entry = (Map.Entry) iter.next();
            final Object arg = unwrapper.unwrap((TemplateModel) entry.getValue());
            argArray[0] = arg;
            final Object paramName = entry.getKey();
            Method setterMethod = (Method) propertySetters.get(paramName);
            if (setterMethod == null) {
                if (dynaSetter == null) {
                    throw new TemplateModelException("Unknown property " + StringUtil.jQuote(paramName.toString()) + " on instance of " + tagClass.getName());
                } else {
                    dynaSetter.invoke(tag, null, paramName, argArray[0]);
                }
            } else {
                if (arg instanceof BigDecimal) {
                    argArray[0] = BeansWrapper.coerceBigDecimal((BigDecimal) arg, setterMethod.getParameterTypes()[0]);
                }
                try {
                    setterMethod.invoke(tag, argArray);
                } catch (Exception e) {
                    final Class setterType = setterMethod.getParameterTypes()[0];
                    final _ErrorDescriptionBuilder desc = new _ErrorDescriptionBuilder("Failed to set JSP tag parameter ", new _DelayedJQuote(paramName), " (declared type: ", new _DelayedShortClassName(setterType) + ", actual value's type: ", (argArray[0] != null ? (Object) new _DelayedShortClassName(argArray[0].getClass()) : "Null"), "). See cause exception for the more specific cause...");
                    if (e instanceof IllegalArgumentException && !(setterType.isAssignableFrom(String.class)) && argArray[0] != null && argArray[0] instanceof String) {
                        desc.tip("This problem is often caused by unnecessary parameter quotation. Paramters " + "aren't quoted in FTL, similarly as they aren't quoted in most languages. " + "For example, these parameter assignments are wrong: ", "<@my.tag p1=\"true\" p2=\"10\" p3=\"${someVariable}\" p4=\"${x+1}\" />", ". The correct form is: ", "<@my.tag p1=true p2=10 p3=someVariable p4=x+1 />", ". Only string literals are quoted (regardless of where they occur): ", "<@my.box style=\"info\" message=\"Hello ${name}!\" width=200 />", ".");
                    }
                    throw new _TemplateModelException(e, null, desc);
                }
            }
        }
    }
}