Variable attributes

where attributes-list is:

ATTRIBUTES ( attribute [ = "value" ] [,...] )

1. attribute is the name of a definition attribute.
2. value is the value for the definition attribute, it is optional for boolean attributes.

To specify metadata information when defining a variable, use the ATTRIBUTES clause right after the type:

DEFINE myvar INTEGER ATTRIBUTES( ... )

When defining attributes for complex types, the ATTRIBUTES clause must be specified right after the complex type keywords:

DEFINE uuids DYNAMIC ARRAY ATTRIBUTES(json_name="uuid-list") OF STRING
DEFINE customer RECORD ATTRIBUTES(json_name = "customer-record")
          ...
       END RECORD

To define JSON serialization options, use variable definition attributes such as json_null and json_name:

DEFINE rec RECORD
   cust_id INTEGER ATTRIBUTES(json_null="null"),
   cust_name INTEGER ATTRIBUTES(json_name="Customer Name"),
   ...
   orderlist DYNAMIC ARRAY ATTRIBUTES(json_null="undefined") OF RECORD
      ...
      END RECORD,
   ...
 END RECORD

List of supported JSON attributes for variable definitions:

• json_null (values can be "null" or "undefined")
• json_name

Variable attributes are also used when defining variables for XML-based Web Services:

DEFINE data RECORD ATTRIBUTES(XMLName="Demo"),
     val1 INTEGER ATTRIBUTES(XMLName= "Value1"),
     val2 STRING ATTRIBUTES(XMLName= "Value2")
     attr INTEGER ATTRIBUTES(XMLAttribute,XMLName= "MyAttr")
END RECORD