JsonResultsAdapter Class
A JsonResultsAdapter instance is used to provide custom extraction and parsing logic on the json results returned by any web service. This facility makes it possible for breeze to talk to virtually any web service and return objects that will be first class 'breeze' citizens.
Item Index
Methods
Methods
<ctor> JsonResultsAdapter
-
config
JsonResultsAdapter constructor
Parameters:
-
configObject-
nameStringThe name of this adapter. This name is used to uniquely identify and locate this instance when an 'exported' JsonResultsAdapter is later imported.
-
[extractResults]Function optionalCalled once per service operation to extract the 'payload' from any json received over the wire. This method has a default implementation which to simply return the "results" property from any json returned as a result of executing the query.
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visitNodeFunctionA visitor method that will be called on each node of the returned payload.
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Example:
//
var jsonResultsAdapter = new JsonResultsAdapter({
name: "test1e",
extractResults: function(json) {
return json.results;
},
visitNode: function(node, mappingContext, nodeContext) {
var entityType = normalizeTypeName(node.$type);
var propertyName = nodeContext.propertyName;
var ignore = propertyName && propertyName.substr(0, 1) === "$";
return {
entityType: entityType,
nodeId: node.$id,
nodeRefId: node.$ref,
ignore: ignore
};
}
});
var dataService = new DataService( {
serviceName: "breeze/foo",
jsonResultsAdapter: jsonResultsAdapter
});
var entityManager = new EntityManager( {
dataService: dataService
});
