ISSUE 25: Can implementation change property values after instantiation: PROPOSAL

[Mike Edwards <mike_edwards@uk.ibm.com>]

Folks,

PROPOSAL:

1)  An implementation CAN change
a property value during execution.  SCA is only responsible for
providing the value of the property
via injection when the component is started, and for providing
the value specified by the composition
if the implementation invokes an API to retrieve the value.

So, for example, if the property is
defined as a field on a Java implementation, the implementation 
code can change the value of that field
at any time.



Changes to the Specification (WD-02.doc):

Add to the end of section 4.1.3, following
line 312:

The value for a property is supplied
to the implementation of a component at the time that the 
implementation is started.  The
implementation can choose to use the supplied value in any
way that it chooses.  In particular,
the implementation can alter the internal value of the property
at any time.  However, if the implementation
queries the SCA system for the value of the
property, the value as defined in the
SCA composite is the value returned.


Yours,  Mike.

Strategist - Emerging Technologies, SCA & SDO.
Co Chair OASIS SCA Assembly TC.
IBM Hursley Park, Mail Point 146, Winchester, SO21 2JN, Great Britain.
Phone & FAX: +44-1962-818014    Mobile: +44-7802-467431  
Email:  mike_edwards@uk.ibm.com

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