com.adobe.granite.asset.api

Interface RenditionHandler

public interface RenditionHandler

The RenditionHandler interface defines the API for rendition handlers. Each RenditionHandler must be identifiable via a unique ID 'rendition.handler.id'.

RenditionHandler is used by the Asset API to delegate Access, Creation & Deletion of Rendition.

Implementations of this interface must be registered as OSGi services.

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	PROPERTY_ID PROPERTY_ID must be set by the implementation class as an OSGi service property This is used by the Asset API to identify RenditionHandler
static java.lang.String	PROPERTY_RENDITION_MIME_TYPE This property constant defines a property key for the mime type.

Method Summary

Modifier and Type	Method and Description
void	deleteRendition(Resource resource) Delete the rendition resource.
Rendition	getRendition(Resource resource) Get Rendition.
Rendition	setRendition(Resource resource, java.io.InputStream is, java.util.Map<java.lang.String,java.lang.Object> map) Set Rendition.

Field Detail

PROPERTY_ID

static final java.lang.String PROPERTY_ID

PROPERTY_ID must be set by the implementation class as an OSGi service property This is used by the Asset API to identify RenditionHandler

See Also:

Constant Field Values

PROPERTY_RENDITION_MIME_TYPE

static final java.lang.String PROPERTY_RENDITION_MIME_TYPE

This property constant defines a property key for the mime type. This can be used by the RenditionHandler or the API clients to define the mime type of the Rendition

    For example, if the rendition handler requires mime type:
      final Map<String, Object> map = new HashMap<String, Object>();
      map.put(RenditionHandler.PROPERTY_RENDITION_MIME_TYPE, "image/gif");
      ....
      asset.setRendition("image.gif", InputStream, map);

 

See Also:

Constant Field Values

Method Detail

getRendition

Rendition getRendition(Resource resource)

Get Rendition. Implementations are expected to type the given Resource to Rendition.

Parameters:

resource - Rendition resource

Returns:

Rendition object of the given resource

setRendition

Rendition setRendition(Resource resource,
                       java.io.InputStream is,
                       java.util.Map<java.lang.String,java.lang.Object> map)

Set Rendition. Implementations are free to define Resource data structure.

Parameters:

resource - Rendition resource

is - InputStream to create the rendition binary or null

map - containing values needed by this handler.

Returns:

newly created or updated rendition

Throws:

AssetException - if Rendition cannot be set

deleteRendition

void deleteRendition(Resource resource)

Delete the rendition resource. Implementations are free to decide the semantics of deletion.

Parameters:

resource - To be deleted

Throws:

AssetException - if Rendition cannot be deleted