Skip to content

Instantly share code, notes, and snippets.

@kritzikratzi
Created October 10, 2011 14:23
Show Gist options
  • Save kritzikratzi/1275443 to your computer and use it in GitHub Desktop.
Save kritzikratzi/1275443 to your computer and use it in GitHub Desktop.
How I could imagine a more useful blobs class ...
Usage:
public class MyModel extends ...{
@Reference
public static List<Blob2> images;
@Reference
public static Blob2 avatar;
}
Supporting classes:
/**
* You must think of blobs as immutable object.
* Once created you may only modify metadata, but the binary data remains the same.
*
* @author hansi
*/
@Entity
public class Blob2 extends Model{
// the original filename (guess this could be taken from the blob object)
public String filename;
// the original image data ...
// (this could be a gridfsdbobject, i'm just using blob because it's already in there)
public Blob data;
public Blob2(){
}
public Blob2( InputStream body, String filename ){
this.filename = filename;
data = new Blob( body, MimeTypes.getContentType( filename ) );
}
}
package models;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import play.data.binding.Global;
import play.data.binding.TypeBinder;
/**
* And again the binder.
* This could be a little smarter,
* i.e. it could auto-create blobs when file uploads happen.
*
* @author hansi
*/
@Global
public class ImageBlobBinder implements TypeBinder<ImageBlob>{
@Override
public Object bind(String name, Annotation[] annotations, String value,
Class actualClass, Type genericType) throws Exception {
return Blob2.findById( value );
}
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment