Expose more functions for datamodel access (#36)

Author: localhots

datamodel/datamodel.go

@@ -65,6 +65,14 @@ func (dm *DataModel) Version() string {
 	return string(dm.version)
 }
 
+// Each iterates over all parameters in the DataModel. Iteration can be stopped
+// by returning false from the callback function.
+func (dm *DataModel) Each(fn func(p Parameter) (cont bool)) {
+	dm.values.forEach(func(p Parameter) (cont bool) {
+		return fn(p)
+	})
+}
+
 // GetAll returns one or more parameters prefixed with the given path.
 func (dm *DataModel) GetAll(path string) (params []Parameter, ok bool) {
 	if !strings.HasSuffix(path, ".") {

datamodel/parameter.go

@@ -33,6 +33,12 @@ func NormalizeParameters(params map[string]Parameter) {
 	}
 }
 
+// Name returns parameter name.
+func (p Parameter) Name() string {
+	tokens := strings.Split(p.Path, ".")
+	return tokens[len(tokens)-1]
+}
+
 // GetValue returns a parameter value. If the parameter has a generator function
 // it will be used to produce a value, otherwise the value from the parameter
 // will be returned.