FieldHandler (Apache Sling - CMS Reference Application 1.1.8 API)

All Known Implementing Classes:

HoneypotHandler, SelectionHandler, TextareaHandler, TextfieldHandler
```
public interface FieldHandler
```
A service interface for registering services to handle a form field.

Method Summary

All Methods Static Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`static String`	`getName(org.apache.sling.api.resource.Resource fieldResource)`
`void`	`handleField(org.apache.sling.api.SlingHttpServletRequest request, org.apache.sling.api.resource.Resource fieldResource, Map<String,Object> formData)`	Handle the field being submitted.
`boolean`	`handles(org.apache.sling.api.resource.Resource fieldResource)`	Returns true if the FieldHandler should handle the field resource
`static boolean`	`isRequired(org.apache.sling.api.resource.Resource fieldResource)`

- Method Detail
  - handles
```
boolean handles(org.apache.sling.api.resource.Resource fieldResource)
```
    Returns true if the FieldHandler should handle the field resource
    
    Parameters:
    
    fieldResource - the field resource to handle
    
    Returns:
    
    true if the FieldHandler will handle, false otherwise
  - handleField
```
void handleField(org.apache.sling.api.SlingHttpServletRequest request,
                 org.apache.sling.api.resource.Resource fieldResource,
                 Map<String,Object> formData)
          throws FormException
```
    Handle the field being submitted. Uses the configuration from the fieldResource and the data from the request and saves the value into the formData.
    
    Parameters:
    
    request - the request for the form submission
    
    fieldResource - the resource from which to get the field configuration
    
    formData - the Map to which to save the data for the field
    
    Throws:
    
    FormException - an exception occurs attempting to handle the field including the field not being set or being invalid
  - isRequired
```
static boolean isRequired(org.apache.sling.api.resource.Resource fieldResource)
```
  - getName
```
static String getName(org.apache.sling.api.resource.Resource fieldResource)
```