[sca-assembly] NEW ISSUE: Abstract base type for Service and Reference

["David DiFranco" <ddifranc@bea.com>]

Title: NEW ISSUE: Is binding.sca always present?

Title: Abstract base type for Service and Reference

TARGET: Assembly spec

DESCRIPTION: The XML schema definitions for Service and Reference contain an identical set of elements, and also share some attributes.  It would be useful to have Service and Reference extend from a common base class. 

This would make it easier to deal with Services and References programmatically, when processing an SCA XML file, or working with code generated from the XML schema.

PROPOSAL:

New proposed schema content below.  If someone can think of a better name for the base type than “Bindable”, please suggest.

 

<complexType name="Bindable" abstract="true">

    <sequence>

        <element ref="sca:interface" minOccurs="0" maxOccurs="1" />

        <element name="operation" type="sca:Operation" minOccurs="0" maxOccurs="unbounded" />

        <choice minOccurs="0" maxOccurs="unbounded">

            <element ref="sca:binding" />

            <any namespace="##other" processContents="lax" minOccurs="0" maxOccurs="unbounded" />

        </choice>

        <element ref="sca:callback" minOccurs="0" maxOccurs="1" />

        <any namespace="##other" processContents="lax" minOccurs="0" maxOccurs="unbounded" />

    </sequence>

    <attribute name="name" type="NCName" use="required" />

    <attribute name="requires" type="sca:listOfQNames" use="optional" />

    <attribute name="policySets" type="sca:listOfQNames" use="optional"/>

    <anyAttribute namespace="##any" processContents="lax" />

</complexType>

   

<complexType name="Service">          

    <complexContent>

        <extension base="sca:Bindable"> 

            <attribute name="promote" type="anyURI" use="required" />              

        </extension>

    </complexContent>

</complexType>

 

<complexType name="Reference">     

    <complexContent>

        <extension base="sca:Bindable"> 

            <attribute name="target" type="sca:listOfAnyURIs" use="optional"/>

            <attribute name="wiredByImpl" type="boolean" use="optional" default="false"/>

            <attribute name="multiplicity" type="sca:Multiplicity" use="optional" default="1..1" />

            <attribute name="promote" type="sca:listOfAnyURIs" use="required" />

        </extension>

    </complexContent>          

</complexType>                   

 

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