com.google.appengine.api.blobstore.dev
Interface BlobStorage

public interface BlobStorage

BlobStorage provide an abstraction over the storage of blob content. For storing blob metadata, see BlobInfoStorage.

Method Summary

void	deleteBlob(com.google.appengine.api.blobstore.BlobKey blobKey) Remove both the content and the metadata for the specified blob.
java.io.InputStream	fetchBlob(com.google.appengine.api.blobstore.BlobKey blobKey) Fetch the contents of the specified blob.
boolean	hasBlob(com.google.appengine.api.blobstore.BlobKey blobKey)
java.io.OutputStream	storeBlob(com.google.appengine.api.blobstore.BlobKey blobKey) Store the contents of the specified blob.

Method Detail

hasBlob

boolean hasBlob(com.google.appengine.api.blobstore.BlobKey blobKey)

Returns:

true if content is found for the specified blob.

storeBlob

java.io.OutputStream storeBlob(com.google.appengine.api.blobstore.BlobKey blobKey)
                               throws java.io.IOException

Store the contents of the specified blob. The contents should be written to the returned OutputStream, and the blob content may not appear until that stream is closed.

Throws:

java.io.IOException

fetchBlob

java.io.InputStream fetchBlob(com.google.appengine.api.blobstore.BlobKey blobKey)
                              throws java.io.IOException

Fetch the contents of the specified blob.

Throws:

java.io.IOException

deleteBlob

void deleteBlob(com.google.appengine.api.blobstore.BlobKey blobKey)
                throws java.io.IOException

Remove both the content and the metadata for the specified blob.

Throws:

java.io.IOException