merge json value in entity properties rest service

[Florian Bauer]

i use entity properties to persist and modify json object, which is best practice i guess. lets consider the folowing json object:

{ 'value1':'red', 'value2':'green' }

to change value2 i need to load the entity property, edit it and to save it back. this is a pretty dangerous operation in the case when a second client modifies the same json at the same time!

my question:

# is there a kind of a merge method for entity properties to modify json object inside one transaction?

# or is there a kind of a deep-edit method for json strings?

thx,

florian