Gets a property's value at run time. Use the GetPropertyValue( )method
to access a property's value dynamically, even if you do not know
the property's name or type when you are using the method at compile
time.
Return type: Any data type
Access: PUBLIC
Applies to:
Progress.Lang.Class class
Syntax
Four overloaded versions are supported. The first version operates on a scalar instance
property, where the property is any data type that is not, itself, an array.
[ return-value = ] class-object-reference:GetPropertyValue (
INPUT object-reference AS Progress.Lang.Object ,
INPUT property-name AS CHARACTER )
|
The second version operates on a scalar static
property.
[ return-value = ] class-object-reference:GetPropertyValue (
INPUT property-name AS CHARACTER )
|
The third version operates on an instance array
or .NET indexed property.
[ return-value = ] class-object-reference:GetPropertyValue (
INPUT object-reference AS Progress.Lang.Object,
INPUT property-name AS CHARACTER, INPUT index AS any-data-type )
|
The fourth version operates on a static array
or .NET indexed property.
[ return-value = ] class-object-reference:GetPropertyValue (
INPUT object-reference AS Progress.Lang.Object,
INPUT property-name AS CHARACTER, INPUT index AS any-data-type )
|
- return-value
- Specifies an ABL data element, that is assigned the value returned from
the property's GET accessor. This return value can have any valid ABL
or .NET method return type. The AVM automatically does the required
conversions as if there were a CAST or an ABL conversion function
such as STRING or INTEGER present.
- class-object-reference
- Specifies a reference to an instance of Progress.Lang.Class class;
this must be a type that exposes the property. For instance properties, object-reference and class-object-reference must
be the same type or one must inherit from the other, and both must
either define the property or inherit it.
-
object-reference
- Specifies a reference to an ABL or .NET class instance that
exposes the specified property as an instance member. The compiler
allows object-reference to be declared as any object type.
At run time, the object type must resolve to the type that exposes
the property.
Note: The overloads of GetPropertyValue( )that
take an object reference can be used with a static property by setting
object-reference to the Unknown value (?). Alternatively,
use the overloads that are designed specifically for static properties.
Note: A run-time error arises if object-reference does
not inherit from class-object-reference, or vice-versa.
-
property-name
- Specifies a CHARACTER name of the property. The AVM evaluates property-name at
run time. Note that the property cannot be defined in a built-in
type.
- index
- Specifies an integer expression for the index of the desired
element. If the property is a .NET indexed property, index is an
expression for the specified element. The index for an indexed property
does not have to be an integer.
- any-data-type
- Specifies the data type of the associated element. The set of
possible data types depends on the element. For example, the index
of an ABL array element can only be an integer type. However, the
return type of a property or array property element can be any ABL
primitive data or object type.
