Class: AppEngineUtils::Datastore::Blob

Inherits:
Object
  • Object
show all
Defined in:
lib/appengine-utils/datastore/blob.rb

Instance Method Summary collapse

Instance Method Details

#create(blob) ⇒ Object 



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# File 'lib/appengine-utils/datastore/blob.rb', line 7

def create(blob)
  @blob = AppEngine::Datastore::Blob.new(blob).to_java
  entity = AppEngine::Datastore::Entity.new("Blob")
  entity['blob']=@blob
  key = AppEngine::Datastore.put(entity)
  key.to_s
end

#delete(key) ⇒ Object 



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# File 'lib/appengine-utils/datastore/blob.rb', line 35

def delete(key)
  datastore_key = AppEngine::Datastore::Key.new(key)
  result = AppEngine::Datastore.delete(datastore_key)
  result
end

#read(key) ⇒ Object 



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# File 'lib/appengine-utils/datastore/blob.rb', line 15

def read(key)
  result = nil
  
  begin
    datastore_key = AppEngine::Datastore::Key.new(key)
    entity = AppEngine::Datastore.get(datastore_key)
    result = entity['blob']
  rescue AppEngine::Datastore::EntityNotFound
    result = nil 
  end
  result
  
end

#update(key, dataset) ⇒ Object 



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# File 'lib/appengine-utils/datastore/blob.rb', line 29

def update(key,dataset)
  delete(key)
  new_key = create(dataset)
  new_key
end