TemplateClassResolver (FreeMarker 2.3.31 API)

All Known Implementing Classes:

OptInTemplateClassResolver
```
public interface TemplateClassResolver
```
Used by built-ins and other template language features that get a class based on a string. This can be handy both for implementing security restrictions and for working around local class-loader issues. The implementation should be thread-safe, unless an instance is always only used in a single Environment object.

Since:

2.3.17

See Also:

Configurable.setNewBuiltinClassResolver(TemplateClassResolver)

Field Summary

Fields
Modifier and Type	Field	Description
`static TemplateClassResolver`	`ALLOWS_NOTHING_RESOLVER`	Doesn't allow resolving any classes.
`static TemplateClassResolver`	`SAFER_RESOLVER`	Same as `UNRESTRICTED_RESOLVER`, except that it doesn't allow resolving `ObjectConstructor` and `Execute` and `freemarker.template.utility.JythonRuntime`.
`static TemplateClassResolver`	`UNRESTRICTED_RESOLVER`	Simply calls `ClassUtil.forName(String)`.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`java.lang.Class`	`resolve(java.lang.String className, Environment env, Template template)`	Gets a `Class` based on the class name.

- Field Detail
  - UNRESTRICTED_RESOLVER
```
static final TemplateClassResolver UNRESTRICTED_RESOLVER
```
    Simply calls ClassUtil.forName(String).
  - SAFER_RESOLVER
```
static final TemplateClassResolver SAFER_RESOLVER
```
    Same as UNRESTRICTED_RESOLVER, except that it doesn't allow resolving ObjectConstructor and Execute and freemarker.template.utility.JythonRuntime.
  - ALLOWS_NOTHING_RESOLVER
```
static final TemplateClassResolver ALLOWS_NOTHING_RESOLVER
```
    Doesn't allow resolving any classes.
- Method Detail
  - resolve
```
java.lang.Class resolve(java.lang.String className,
                        Environment env,
                        Template template)
                 throws TemplateException
```
    Gets a Class based on the class name.
    
    Parameters:
    
    className - the full-qualified class name
    
    env - the environment in which the template executes
    
    template - the template where the operation that require the class resolution resides in. This is null if the call doesn't come from a template.
    
    Throws:
    
    TemplateException - if the class can't be found or shouldn't be accessed from a template for security reasons.