public final class BlobInfoStorage
extends java.lang.Object
BlobInfoStorage
provides persistence of blob metadata (in
the form of BlobInfo
objects). It uses DatastoreService
as its persistence mechanism.Constructor and Description |
---|
BlobInfoStorage() |
Modifier and Type | Method and Description |
---|---|
void |
deleteBlobInfo(com.google.appengine.api.blobstore.BlobKey blobKey)
Delete the metadata associated with
blobKey . |
protected com.google.appengine.api.datastore.Key |
getMetadataKeyForBlobKey(com.google.appengine.api.blobstore.BlobKey blobKey) |
com.google.appengine.api.blobstore.BlobInfo |
loadBlobInfo(com.google.appengine.api.blobstore.BlobKey blobKey)
Load blob metadata for
blobKey . |
com.google.appengine.api.blobstore.BlobInfo |
loadGsFileInfo(com.google.appengine.api.blobstore.BlobKey blobKey)
Load Google Storage file metadata for a
blobKey . |
void |
saveBlobInfo(com.google.appengine.api.blobstore.BlobInfo blobInfo)
Save the metadata in
blobInfo . |
public com.google.appengine.api.blobstore.BlobInfo loadBlobInfo(com.google.appengine.api.blobstore.BlobKey blobKey)
blobKey
. Returns
null
if no matching blob is found.public com.google.appengine.api.blobstore.BlobInfo loadGsFileInfo(com.google.appengine.api.blobstore.BlobKey blobKey)
blobKey
. Returns
null
if no matching file is found.public void saveBlobInfo(com.google.appengine.api.blobstore.BlobInfo blobInfo)
blobInfo
.public void deleteBlobInfo(com.google.appengine.api.blobstore.BlobKey blobKey)
blobKey
.protected com.google.appengine.api.datastore.Key getMetadataKeyForBlobKey(com.google.appengine.api.blobstore.BlobKey blobKey)