[ http://issues.apache.org/jira/browse/TUSCANY-513?page=all ]
ant elder updated TUSCANY-513:
------------------------------
Fix Version/s: Java-Mx
Affects Version/s: Java-Mx
(was: Java-M1)
> Implement support for dynamic subclasses of statically generated types
> ----------------------------------------------------------------------
>
> Key: TUSCANY-513
> URL: http://issues.apache.org/jira/browse/TUSCANY-513
> Project: Tuscany
> Issue Type: Improvement
> Components: Java SDO Implementation
> Affects Versions: Java-Mx
> Reporter: Ron Gavlin
> Fix For: Java-Mx
>
>
> Implement support for dynamic subclasses of statically generated types. See
> below exerpt from tuscany-user mailing list for details.
> Hi Ron,
> Looking at this, it looks like the problem is that you're trying to create
> dynamic subclasses of statically generated types. The bad news is that
> Tuscany doesn't currently support that. The good news is that it's not too
> hard to add the support.
> The problem is that currently Tuscany only has these two primary
> DataObject implementation classes:
> 1. DataObjectImpl - is the base class used for statically generated types.
> It is highly tuned for performance and footprint, so, unlike the base
> class in SDO1 (actually EMF) it doesn't support dynamic extensions.
> 2. DyamicDataObjectImpl - is the class used to support dynamic SDOs. It is
> designed for pure dynamic types, not a mixture of static and dynamic.
> To support what you want, we will need another base class, say
> ExtensibleDataObjectImpl, that is quite similar to DynamicDataObjectImpl,
> but doesn't make the assumption that eStaticFeatureCount() is 0. My guess
> is that there are only a few simple method overrides needed in this class.
> Maybe you would like to try to prototype such a class yourself and hand
> modify your generated classes to extend from it? If you did that and
> tested it, you could submit a patch and we could then very quickly add a
> generator option to use it (maybe even make it the default). If you'd like
> to help with this, it would be very much appreciated!
> At any rate, you should probably open a JIRA feature request for this.
> Thanks,
> Frank
> > Frank,
> >
> > I am working with a mixed static/dynamic model similar to the one
> > listed at the bottom of this post. The http://example.org/ord
> > namespace is statically registered and has code-generated classes. The
> > http://example.org/info/zipcode and http://example.org/info/street
> > namespaces are dynamically registered with no code-generated
> > classes. When I attempt to load the Sample Instance (chapter04.xml),
> > I receive an UnsupportedOperationException thrown from
> > DataObjectImpl.setEClass(EClass). The DataObjectImpl throwing the
> > exception is an instance of "InfoTypeImpl" from the "ord"
> > namespace/ePackage. The EClass parameter is "InfoType" from the
> > "zipcode" namespace. This instance document loads fine using EMF/SDO
> > 1.0. Any suggestions I can try to work-around this problem?
> >
> > - Ron
> >
> >
> > Sample Instance (chapter04.xml)
> > <ord:order xmlns:ord="<http://example.org/ord>";
> > xmlns:xsi="<http://www.w3.org/2001/XMLSchema-instance>";
> > xsi:schemaLocation="<http://example.org/ord> chapter04ord1.xsd">
> > <ord:number>123ABBCC123</ord:number>
> > <ord:customer>
> > <ord:name>Pat Walmsley</ord:name>
> > <ord:number>15465</ord:number>
> > <info xsi:type="ns1:InfoType" xmlns=""
> > xmlns:ns1="<http://example.org/info/zipcode>";>
> > <zipcode>21043</zipcode>
> > </info>
> > </ord:customer>
> > <ord:customer>
> > <ord:name>Priscilla Walmsley</ord:name>
> > <ord:number>15466</ord:number>
> > <info xsi:type="ns1:InfoType" xmlns=""
> > xmlns:ns1="<http://example.org/info/street>";>
> > <street>341 Duckworth Way</street>
> > </info>
> > </ord:customer>
> > <ord:items>
> > <product>
> > <number>557</number>
> > <name>Short-Sleeved Linen Blouse</name>
> > <size system="US-DRESS">10</size>
> > <color value="blue"/>
> > </product>
> > </ord:items>
> > </ord:order>
> > Schema Document 1 (chapter04ord1.xsd)
> > <xsd:schema xmlns:xsd="<http://www.w3.org/2001/XMLSchema>";;
> > targetNamespace="<http://example.org/ord>";;
> > xmlns="<http://example.org/ord>";;
> > xmlns:prod="<http://example.org/prod>";;
> > elementFormDefault="qualified">
> > <xsd:import namespace="<http://example.org/prod>";;
> > schemaLocation="chapter04prod.xsd"/>
> > <xsd:simpleType name="OrderNumType">
> > <xsd:restriction base="xsd:string"/>
> > </xsd:simpleType>
> > <xsd:complexType name="InfoType"/>
> > <xsd:complexType name="CustomerType">
> > <xsd:sequence>
> > <xsd:element name="name" type="CustNameType"/>
> > <xsd:element name="number" type="xsd:integer"/>
> > <xsd:element name="info" type="InfoType" form="unqualified"/>
> > </xsd:sequence>
> > </xsd:complexType>
> > <xsd:simpleType name="CustNameType">
> > <xsd:restriction base="xsd:string"/>
> > </xsd:simpleType>
> > <xsd:element name="order" type="OrderType"/>
> > <xsd:complexType name="OrderType">
> > <xsd:sequence>
> > <xsd:element name="number" type="OrderNumType"/>
> > <xsd:element name="customer" type="CustomerType"
> > maxOccurs="unbounded"/>
> > <xsd:element name="items" type="prod:ItemsType"/>
> > </xsd:sequence>
> > </xsd:complexType>
> > </xsd:schema>
> > Schema Document 2 (chapter04infozipcode.xsd)
> > <xsd:schema xmlns:xsd="<http://www.w3.org/2001/XMLSchema>";;
> > xmlns:ord="<http://example.org/ord>";;
> > xmlns="<http://example.org/info/zipcode>";;
> > targetNamespace="<http://example.org/info/zipcode>";;
> > elementFormDefault="unqualified">
> > <xsd:import namespace="<http://example.org/ord>";;
> > schemaLocation="chapter04ord1.xsd"/>
> > <xsd:complexType name="InfoType">
> > <xsd:complexContent>
> > <xsd:extension base="ord:InfoType">
> > <xsd:sequence>
> > <xsd:element name="zipcode" type="xsd:string"/>
> > </xsd:sequence>
> > </xsd:extension>
> > </xsd:complexContent>
> > </xsd:complexType>
> > </xsd:schema>
> > Schema Document 3 (chapter04infostreet.xsd)
> > <xsd:schema xmlns:xsd="<http://www.w3.org/2001/XMLSchema>";;
> > xmlns:ord="<http://example.org/ord>";;
> > xmlns="<http://example.org/info/street>";;
> > targetNamespace="<http://example.org/info/street>";;
> > elementFormDefault="unqualified">
> > <xsd:import namespace="<http://example.org/ord>";;
> > schemaLocation="chapter04ord1.xsd"/>
> > <xsd:complexType name="InfoType">
> > <xsd:complexContent>
> > <xsd:extension base="ord:InfoType">
> > <xsd:sequence>
> > <xsd:element name="street" type="xsd:string"/>
> > </xsd:sequence>
> > </xsd:extension>
> > </xsd:complexContent>
> > </xsd:complexType>
> > </xsd:schema>
> > Schema Document 4 (chapter04prod.xsd)
> > <xsd:schema xmlns:xsd="<http://www.w3.org/2001/XMLSchema>";;
> > xmlns="<http://example.org/prod>";;
> > targetNamespace="<http://example.org/prod>";;
> > elementFormDefault="unqualified">
> > <xsd:complexType name="ItemsType">
> > <xsd:sequence>
> > <xsd:element name="product" type="ProductType"/>
> > </xsd:sequence>
> > </xsd:complexType>
> > <xsd:complexType name="ProductType">
> > <xsd:sequence>
> > <xsd:element name="number" type="xsd:integer"/>
> > <xsd:element name="name" type="xsd:string"/>
> > <xsd:element name="size" type="SizeType"/>
> > <xsd:element name="color" type="ColorType"/>
> > </xsd:sequence>
> > </xsd:complexType>
> > <xsd:complexType name="SizeType">
> > <xsd:simpleContent>
> > <xsd:extension base="xsd:integer">
> > <xsd:attribute name="system" type="xsd:string"/>
> > </xsd:extension>
> > </xsd:simpleContent>
> > </xsd:complexType>
> > <xsd:complexType name="ColorType">
> > <xsd:attribute name="value" type="xsd:string"/>
> > </xsd:complexType>
> > </xsd:schema>
> >
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