This subsection explains attributes used for IDL file declaration. The following attributes can be used with OpenTP1 TxRPC:

• version attribute
• pointer_default attribute
• transaction_mandatory attribute
• transaction_optional attribute
• in attribute
• out attribute
• Pointer attribute

OpenTP1 IDL-only TxRPC restriction

• The uuid attribute is ignored with IDL-only TxRPC.
• The following attributes cause an error with IDL-only TxRPC:
  endpoint, local, context_handle, transmit_as, vl_array, vl_enum, vl_string, vl_struct, array attribute
  
• The transaction_mandatory and transaction_optional attributes are valid only if the communicating processes are both ndce processes.

The explanation formats are as follows:

Format

Indicates the format of the attribute.

Attribute meaning

Indicates the meanings of attributes.

Specification item

Indicates the items to be specified as attributes.

Explanation

Explains about attributes.

Specification example

Gives examples of attribute specification.

Organization of this section

version attribute

pointer_default attribute

transaction_mandatory attribute

transaction_optional attribute

in attribute

out attribute

Pointer attribute