/*
IsNtype is true if the input is a node and it is of type t.
*/
func IsNtype(input interface{}, t TypeID) bool {
var (
n map[string]interface{}
tv interface{}
ok bool
)
if !ld.IsNode(input) {
return false
}
n = input.(map[string]interface{})
tv, ok = n["@type"]
if !ok {
return false
}
switch tv.(type) {
case string:
return t.URI() == tv.(string)
case []string:
for _, typeval := range tv.([]string) {
if t.URI() == typeval {
return true
}
}
}
return false
}
/*
GetN gets the property of a node if it is a node
*/
func GetN(input interface{}, propID PropID) (map[string]interface{}, bool) {
var (
node map[string]interface{}
propI interface{}
ok bool
)
node, ok = input.(map[string]interface{})
if !ok {
return nil, false
}
propI, ok = node[propID.URI()]
if !ok {
return nil, false
}
if !ld.IsNode(propI) {
return nil, false
}
return propI.(map[string]interface{}), true
}