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## org.mule.module.json.transformers
Class JsonMapperResolver

    java.lang.Object
      org.mule.config.transformer.AbstractAnnotatedTransformerArgumentResolver
          org.mule.module.json.transformers.JsonMapperResolver

All Implemented Interfaces:
  Disposable, TransformerArgumentResolver

    public class JsonMapperResolver

extends AbstractAnnotatedTransformerArgumentResolver

This resolver is used by the transform engine to inject a `ObjectMapper` into a method that requires it. A shared ObjectMapper context can be created for the application and stored in the registry, this will get injected into any transform methods that add `ObjectMapper` to the method signature.

If there is no shared Object Mapper one will be created for the transformer using the return type as the Json root element.

Since:
  3.0

Field Summary
`static String` | `ANNOTATIONS_PACKAGE_NAME`

Fields inherited from class org.mule.config.transformer.AbstractAnnotatedTransformerArgumentResolver
`ignoredPackages, logger`

Fields inherited from interface org.mule.api.lifecycle.Disposable
`PHASE_NAME`

Constructor Summary
`JsonMapperResolver()`

Method Summary
`protected Object` | `createArgument(Class annotatedType, MuleContext context)` If the resolver cannot locate the required object of type `AbstractAnnotatedTransformerArgumentResolver.getArgumentClass()` this method will be invoked an instance of the object.
`protected String` | `getAnnotationsPackageName()` This resolver scans a class for annotations in this package.
`protected Class` | `getArgumentClass()` The object type that this resolver will discover or create

Methods inherited from class org.mule.config.transformer.AbstractAnnotatedTransformerArgumentResolver
`dispose, findAnnotation, getMatchingClasses, getNonMatchingClasses, isNonMatching, resolve`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### ANNOTATIONS_PACKAGE_NAME

    public static final String ANNOTATIONS_PACKAGE_NAME

See Also:
  Constant Field Values

Constructor Detail

### JsonMapperResolver

    public JsonMapperResolver()

Method Detail

### getArgumentClass

    protected Class getArgumentClass()

  The object type that this resolver will discover or create

  Specified by:
    `getArgumentClass` in class `AbstractAnnotatedTransformerArgumentResolver`
  Returns:
    The object type that this resolver will discover or create

### createArgument

    protected Object createArgument(Class annotatedType,
                                    MuleContext context)
                             throws Exception

  If the resolver cannot locate the required object of type `AbstractAnnotatedTransformerArgumentResolver.getArgumentClass()` this method will be invoked an instance of the object.

  Specified by:
    `createArgument` in class `AbstractAnnotatedTransformerArgumentResolver`
  Parameters:
    `annotatedType` - the annotated object that was matched
    `context` - the current Mule context.
  Returns:
    a new instance of the object being resolved. This method may also retain a shared instance and possible add configuration to the instance based on this invocation
  Throws:
    `Exception` - if the object cannot be created

### getAnnotationsPackageName

    protected String getAnnotationsPackageName()

  This resolver scans a class for annotations in this package. Note this behaviour can be changed by overloading the `AbstractAnnotatedTransformerArgumentResolver.findAnnotation(Class)` method and search based on your own criteria

  Specified by:
    `getAnnotationsPackageName` in class `AbstractAnnotatedTransformerArgumentResolver`
  Returns:
    the package of the annotation(s) to scan for

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