Issue 12539: Deprecated usage of IDL in the DDS spec (data-distribution-rtf)
Source: OCI (Mr. Adam Mitz, mitza(at)ociweb.com)
Nature: Uncategorized Issue
Severity: 
Summary: The CORBA specification (08-01-04) in section 7.11.6 deprecates the use of anonymous types, for example the type of the struct field "seq" below:
struct Foo {
sequence<octet> seq;
};


The DDS DCPS IDL uses these in multiple places (the first is DDS::UserDataQosPolicy).  These should be replaced with non-deprecated usage such as:
typedef sequence<octet> OctetSeq;
struct Foo {
OctetSeq seq;
};


This will also increase internal consistency of the DDS spec, since it already uses a DDS::StringSeq typedef in the PartitionQosPolicy struct.


Furthermore, if the element type of the sequence is a Basic Type or a String Type, the CORBA module already provides these typedefs, so it would be preferable to use them.  The example above becomes:
struct Foo {
CORBA::OctetSeq seq;
};

Resolution: 
Revised Text: 
Actions taken:
June 20, 2008: received issue
Discussion: 

End of Annotations:=====
te: Fri, 20 Jun 2008 10:40:32 -0500
From: Adam Mitz <mitza@ociweb.com>
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Subject: (data-distribution-rtf) Deprecated usage of IDL in the DDS spec
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The CORBA specification (08-01-04) in section 7.11.6 deprecates the use of anonymous types, for example the type of the struct field "seq" below:
struct Foo {
sequence<octet> seq;
};


The DDS DCPS IDL uses these in multiple places (the first is DDS::UserDataQosPolicy).  These should be replaced with non-deprecated usage such as:
typedef sequence<octet> OctetSeq;
struct Foo {
OctetSeq seq;
};


This will also increase internal consistency of the DDS spec, since it already uses a DDS::StringSeq typedef in the PartitionQosPolicy struct.


Furthermore, if the element type of the sequence is a Basic Type or a String Type, the CORBA module already provides these typedefs, so it would be preferable to use them.  The example above becomes:
struct Foo {
CORBA::OctetSeq seq;
};




Thanks,
Adam Mitz
Software Engineer
Object Computing, Inc.