Examples with PreResultListener com.opensymphony.xwork2.interceptor.PreResultListener used on opensource projects

Example 6 with PreResultListener

use of com.opensymphony.xwork2.interceptor.PreResultListener in project struts by apache.

the class RepopulateConversionErrorFieldValidatorSupport method repopulateField.

public void repopulateField(Object object) throws ValidationException {
    ActionInvocation invocation = ActionContext.getContext().getActionInvocation();
    Map<String, ConversionData> conversionErrors = ActionContext.getContext().getConversionErrors();
    String fieldName = getFieldName();
    String fullFieldName = getValidatorContext().getFullFieldName(fieldName);
    if (conversionErrors.containsKey(fullFieldName)) {
        Object value = conversionErrors.get(fullFieldName).getValue();
        final Map<Object, Object> fakeParams = new LinkedHashMap<Object, Object>();
        boolean doExprOverride = false;
        if (value instanceof String[]) {
            // take the first element, if possible
            String[] tmpValue = (String[]) value;
            if ((tmpValue.length > 0)) {
                doExprOverride = true;
                fakeParams.put(fullFieldName, escape(tmpValue[0]));
            } else {
                LOG.warn("value is an empty array of String or with first element in it as null [{}], will not repopulate conversion error", value);
            }
        } else if (value instanceof String) {
            String tmpValue = (String) value;
            doExprOverride = true;
            fakeParams.put(fullFieldName, escape(tmpValue));
        } else {
            // opps... it should be
            LOG.warn("conversion error value is not a String or array of String but instead is [{}], will not repopulate conversion error", value);
        }
        if (doExprOverride) {
            invocation.addPreResultListener(new PreResultListener() {

                public void beforeResult(ActionInvocation invocation, String resultCode) {
                    ValueStack stack = ActionContext.getContext().getValueStack();
                    stack.setExprOverrides(fakeParams);
                }
            });
        }
    }
}