so i only can upload binary data up to 1 MB? any possibility to upload binary data with GBs?
greatz On 1 Mrz., 18:36, Jake <[email protected]> wrote: > Hey, > > Saving binary data to the datastore isn't too difficult - you can just > use a Blob type and ensure that you don't break the 1MB capacity of a > single entity. You can see my class declaration below. The "hard" > part is converting a file upload to a byte[] and then from a byte[] > back into what you would consider a "downloadable" file. That > depends, somewhat, on your implementation. For example, I use the > Wicket architecture and all I need to do is > > FileUpload f = fileUploadField.getFileUpload(); > BinaryFileData b = new BinaryFileData(f.getBytes()); > pm.makePersistent(b); > > I presume you are not using Wicket, but some other framework. You'll > need to look into how it handles file uploads. > > You may also find this interesting:http://code.google.com/p/gaevfs/ > I haven't used it, but it skips the whole byte[] thing entirely. > > Jake > > @PersistenceCapable(identityType = IdentityType.APPLICATION) > public class BinaryFileData implements Serializable { > > private static final long serialVersionUID = 1L; > > @PrimaryKey > @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY) > private Key key; > > @Persistent > private String name; > > @Persistent > private String mimeType; > > @Persistent(defaultFetchGroup="true") > private Blob data; > > public BinaryFileData(byte[] bytes) { > this.data = new Blob(bytes); > } > > public byte[] getData() { > return data.getBytes(); > } > > public void setData(byte[] d) { > this.data = new Blob(d); > } > > } > > On Mar 1, 11:25 am, Valentino Hankypants <[email protected]> wrote: > > > hello together, > > > i started working with the app engine some days ago, and now i want to > > save some binary data (pdf, etc.) from my app (eg by clicking a > > button) in the storage system. > > > anybody who can help me doing this? (tutorials, etc.) > > > greatz > > flo -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
