util.JSONObject.getLength()
util.JSONObject.getLength() returns the number of the name:value pairs included in the specified JSON object.
Syntax:
util.JSONObject.getLength()
Usage and examples:
util.JSONObject.getLength() is used to return or display how many name:value pairs there are in the specified JSON object.
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example code #1
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MAIN
DEFINE json_obj util.JSONObject
LET json_obj = util.JSONObject.parse('{"id":123,"name":"Scott"}')
DISPLAY json_obj.getLength()
CALL fgl_getkey()
END MAIN
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obtained results #1
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example code #2
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MAIN
DEFINE json_obj util.JSONObject
DEFINE cust_rec RECORD
cust_num INTEGER,
cust_name VARCHAR(30),
order_id DYNAMIC ARRAY OF INTEGER
END RECORD
LET cust_rec.cust_num = 345
LET cust_rec.cust_name = "McMaclum"
LET cust_rec.order_id = 4732
LET json_obj = util.JSONObject.fromFGL(cust_rec)
DISPLAY json_obj.getLength()
CALL fgl_getkey()
END MAIN
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obtained results #2
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This method can be used together with util.JSONObject.name() and util.JSONObject.getType() in order to read the elements of JSON objects:
Example programs:
CVS server: client.querix.com
CVS repository: /lycia_doc_examples
User: client
Project: auxiliary_features/json
Program: util_JSONObject_getLength
Related articles:
util.JSONObject.getType()
util.JSONObject.name()