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Difference between revisions of "CDO/Preparing EMF Models"

< CDO
(New page: __TOC__ ==Create an Ecore Model== There's not much to say about this step. The .ecore file for CDO models is the same as for pure EMF models. The only differences are in the Java code t...)
 
(Use the CDO Model Importer)
 
(27 intermediate revisions by 2 users not shown)
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__TOC__
 
__TOC__
 
+
<br>
  
 
==Create an Ecore Model==
 
==Create an Ecore Model==
  
There's not much to say about this step. The .ecore file for CDO models is the same as for pure EMF models. The only differences are in the Java code that the EMF generator will produce, as you will see in the next step.
+
There's really not much to say about this step. The .ecore file for CDO models is the same as for pure EMF models. Use the ''Empty EMF Project'' New Wizard to create an initial project for your model:
 +
 
 +
 
 +
[[Image:EmptyEMFProject.png]]
 +
 
  
The <code>model1</code> example model in the usual Ecore model editor looks like follows:
+
Create an ordinary Ecore model file in the models folder. The <code>model1</code> example model in the usual Ecore model editor looks like follows:
  
  
Line 12: Line 16:
  
  
The XML form of this Ecore model is:
+
You can download this Ecore model from [http://dev.eclipse.org/viewcvs/index.cgi/org.eclipse.emf/org.eclipse.emf.cdo/tests/org.eclipse.emf.cdo.tests.model1/model/?root=Modeling_Project here]. Its XML form is:
 
<pre>
 
<pre>
 
<?xml version="1.0" encoding="UTF-8"?>
 
<?xml version="1.0" encoding="UTF-8"?>
Line 80: Line 84:
 
</pre>
 
</pre>
  
 +
The model project should look similar to this, now:
  
==Create the GenModel==
 
  
The EMF generator model for your Ecore model is much like a usual Genodel except for three differences:
+
[[Image:Model1Project.png]]
 +
 
 +
<br>
 +
==Use the CDO Model Importer==
 +
 
 +
The easiest way to create a CDO enabled GenModel is to use the CDO Migrator utility that is shipped with the CDO SDK. It includes a special Ecore Model Importer that adjusts all the GenModel properties needed to generated CDO native models. Right-click the Ecore model file and select ''New'' and ''Other...'' and choose the ''EMF Generator Model'' New Wizard:
 +
 
 +
[[Image:Migrator0.png]]
 +
 
 +
 
 +
[[Image:Migrator1.png]]
 +
 
 +
 
 +
On the next page, the ''Select a Model Importer'' page, select the ''Ecore model (CDO native)'' importer:
 +
 
 +
 
 +
[[Image:Migrator2.png]]
 +
 
 +
 
 +
On the next page, the ''Ecore Import'' page, click the ''Load'' button:
 +
 
 +
 
 +
[[Image:Migrator3.png]]
 +
 
 +
 
 +
On the next page, the ''Package Selection'' page, adjust the settings depending on your model and its referenced models:
 +
 
 +
 
 +
[[Image:Migrator4.png]]
 +
 
 +
 
 +
After clicking the ''Finish'' button your model project should look similar to this (please note that the CDO marker file <code>META-INF/CDO.MF</code> has also been created by the importer):
 +
 
 +
 
 +
[[Image:Migrator5.png]]
 +
 
 +
 
 +
Proceed with [[#Generate The Model|Generate The Model]]
 +
 
 +
<br>
 +
 
 +
==Use the CDO Model Migrator==
 +
 
 +
If you don't want to use the [[#Use the CDO Model Importer|CDO Model Importer]] to automatically let a proper GenModel be created for you it is still rather easy to migrate an existing GenModel with the CDO Migrator:
 +
 
 +
 
 +
[[Image:Migrator6.png]]
 +
 
 +
 
 +
In case the generator model was successfully migrated to CDO the following dialog box will appear:
 +
 
 +
 
 +
[[Image:Migrator7.png]]
 +
 
 +
 
 +
Proceed with [[#Generate The Model|Generate The Model]]
 +
 
 +
<br>
 +
==Migrate your GenModel Manually==
 +
 
 +
If you don't want to use the [[#Use the CDO Model Importer|CDO Model Importer]] to automatically let a proper GenModel be created for you it is still rather easy to migrate an existing GenModel by hand.
 +
<br>
 +
 
 +
===Modify an Existing GenModel===
 +
 
 +
The EMF generator model for your Ecore model is much like a usual GenModel except for the following four differences:
 
* The '''Feature Delegation''' property ''must'' be set to <code>Reflective</code>
 
* The '''Feature Delegation''' property ''must'' be set to <code>Reflective</code>
 +
* The '''Model Plug-in Variables''' property ''should'' be set to <code>CDO=org.eclipse.emf.cdo</code>
 
* The '''Root Extends Class''' property ''must'' be set to <code>org.eclipse.emf.internal.cdo.CDOObjectImpl</code>
 
* The '''Root Extends Class''' property ''must'' be set to <code>org.eclipse.emf.internal.cdo.CDOObjectImpl</code>
 
* The '''Root Extends Interface''' property ''can'' be set to <code>org.eclipse.emf.cdo.CDOObject</code>
 
* The '''Root Extends Interface''' property ''can'' be set to <code>org.eclipse.emf.cdo.CDOObject</code>
Line 92: Line 162:
  
  
The XML form of this generator model is:
+
Note that you do not need to generate an editor if you want to use your model with the [[CDO User Interface]]. A dedicated model editor is only needed if you plan to use your model with normal XML based files as well. Even in this scenario it could be simpler to use the EMF Reflective Model Editor though.
 +
 
 +
You can download this generator model from [http://dev.eclipse.org/viewcvs/index.cgi/org.eclipse.emf/org.eclipse.emf.cdo/tests/org.eclipse.emf.cdo.tests.model1/model/?root=Modeling_Project here]. Its XML form is:
 
<pre>
 
<pre>
 
<?xml version="1.0" encoding="UTF-8"?>
 
<?xml version="1.0" encoding="UTF-8"?>
Line 103: Line 175:
 
     complianceLevel="5.0">
 
     complianceLevel="5.0">
 
   <foreignModel>model1.ecore</foreignModel>
 
   <foreignModel>model1.ecore</foreignModel>
 +
  <modelPluginVariables>CDO=org.eclipse.emf.cdo</modelPluginVariables>
 
   <genPackages prefix="Model1" basePackage="org.eclipse.emf.cdo.tests" disposableProviderFactory="true"
 
   <genPackages prefix="Model1" basePackage="org.eclipse.emf.cdo.tests" disposableProviderFactory="true"
 
       ecorePackage="model1.ecore#/">
 
       ecorePackage="model1.ecore#/">
     <genClasses ecoreClass="model1.ecore#//Supplier">
+
     <genClasses ecoreClass="model1.ecore#//Address">
       <genFeatures createChild="false" ecoreFeature="ecore:EAttribute model1.ecore#//Supplier/name"/>
+
       <genFeatures createChild="false" ecoreFeature="ecore:EAttribute model1.ecore#//Address/name"/>
    </genClasses>
+
       <genFeatures createChild="false" ecoreFeature="ecore:EAttribute model1.ecore#//Address/street"/>
    <genClasses ecoreClass="model1.ecore#//PurchaseOrder">
+
       <genFeatures createChild="false" ecoreFeature="ecore:EAttribute model1.ecore#//Address/city"/>
       <genFeatures createChild="false" ecoreFeature="ecore:EAttribute model1.ecore#//PurchaseOrder/date"/>
+
      <genFeatures notify="false" createChild="false" propertySortChoices="true" ecoreFeature="ecore:EReference model1.ecore#//PurchaseOrder/supplier"/>
+
    </genClasses>
+
    <genClasses ecoreClass="model1.ecore#//OrderDetail">
+
      <genFeatures notify="false" createChild="false" propertySortChoices="true" ecoreFeature="ecore:EReference model1.ecore#//OrderDetail/product"/>
+
       <genFeatures createChild="false" ecoreFeature="ecore:EAttribute model1.ecore#//OrderDetail/price"/>
+
    </genClasses>
+
    <genClasses ecoreClass="model1.ecore#//Product">
+
      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute model1.ecore#//Product/name"/>
+
      <genFeatures notify="false" createChild="false" propertySortChoices="true" ecoreFeature="ecore:EReference model1.ecore#//Product/orderDetails"/>
+
    </genClasses>
+
    <genClasses ecoreClass="model1.ecore#//Category">
+
      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute model1.ecore#//Category/name"/>
+
      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference model1.ecore#//Category/categories"/>
+
      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference model1.ecore#//Category/products"/>
+
 
     </genClasses>
 
     </genClasses>
 
     <genClasses ecoreClass="model1.ecore#//Company">
 
     <genClasses ecoreClass="model1.ecore#//Company">
 
       <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference model1.ecore#//Company/categories"/>
 
       <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference model1.ecore#//Company/categories"/>
 
       <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference model1.ecore#//Company/suppliers"/>
 
       <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference model1.ecore#//Company/suppliers"/>
      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference model1.ecore#//Company/purchaseOrders"/>
 
 
       <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference model1.ecore#//Company/customers"/>
 
       <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference model1.ecore#//Company/customers"/>
 +
      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference model1.ecore#//Company/purchaseOrders"/>
 
       <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference model1.ecore#//Company/salesOrders"/>
 
       <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference model1.ecore#//Company/salesOrders"/>
 +
    </genClasses>
 +
    <genClasses ecoreClass="model1.ecore#//Supplier">
 +
      <genFeatures notify="false" createChild="false" propertySortChoices="true" ecoreFeature="ecore:EReference model1.ecore#//Supplier/purchaseOrders"/>
 
     </genClasses>
 
     </genClasses>
 
     <genClasses ecoreClass="model1.ecore#//Customer">
 
     <genClasses ecoreClass="model1.ecore#//Customer">
      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute model1.ecore#//Customer/name"/>
 
 
       <genFeatures notify="false" createChild="false" propertySortChoices="true" ecoreFeature="ecore:EReference model1.ecore#//Customer/salesOrders"/>
 
       <genFeatures notify="false" createChild="false" propertySortChoices="true" ecoreFeature="ecore:EReference model1.ecore#//Customer/salesOrders"/>
 +
    </genClasses>
 +
    <genClasses ecoreClass="model1.ecore#//Order">
 +
      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference model1.ecore#//Order/orderDetails"/>
 +
    </genClasses>
 +
    <genClasses ecoreClass="model1.ecore#//OrderDetail">
 +
      <genFeatures property="None" notify="false" createChild="false" ecoreFeature="ecore:EReference model1.ecore#//OrderDetail/order"/>
 +
      <genFeatures notify="false" createChild="false" propertySortChoices="true" ecoreFeature="ecore:EReference model1.ecore#//OrderDetail/product"/>
 +
      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute model1.ecore#//OrderDetail/price"/>
 +
    </genClasses>
 +
    <genClasses ecoreClass="model1.ecore#//PurchaseOrder">
 +
      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute model1.ecore#//PurchaseOrder/date"/>
 +
      <genFeatures notify="false" createChild="false" propertySortChoices="true" ecoreFeature="ecore:EReference model1.ecore#//PurchaseOrder/supplier"/>
 
     </genClasses>
 
     </genClasses>
 
     <genClasses ecoreClass="model1.ecore#//SalesOrder">
 
     <genClasses ecoreClass="model1.ecore#//SalesOrder">
 
       <genFeatures createChild="false" ecoreFeature="ecore:EAttribute model1.ecore#//SalesOrder/id"/>
 
       <genFeatures createChild="false" ecoreFeature="ecore:EAttribute model1.ecore#//SalesOrder/id"/>
 
       <genFeatures notify="false" createChild="false" propertySortChoices="true" ecoreFeature="ecore:EReference model1.ecore#//SalesOrder/customer"/>
 
       <genFeatures notify="false" createChild="false" propertySortChoices="true" ecoreFeature="ecore:EReference model1.ecore#//SalesOrder/customer"/>
 +
    </genClasses>
 +
    <genClasses ecoreClass="model1.ecore#//Category">
 +
      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute model1.ecore#//Category/name"/>
 +
      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference model1.ecore#//Category/categories"/>
 +
      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference model1.ecore#//Category/products"/>
 +
    </genClasses>
 +
    <genClasses ecoreClass="model1.ecore#//Product">
 +
      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute model1.ecore#//Product/name"/>
 +
      <genFeatures notify="false" createChild="false" propertySortChoices="true" ecoreFeature="ecore:EReference model1.ecore#//Product/orderDetails"/>
 
     </genClasses>
 
     </genClasses>
 
   </genPackages>
 
   </genPackages>
 
</genmodel:GenModel>
 
</genmodel:GenModel>
 
</pre>
 
</pre>
 +
<br>
 +
 +
==Generate The Model==
 +
 +
Generate the Java code for your model like you are used to do it:
 +
 +
 +
[[Image:GenerateTheModel.png]]
 +
 +
 +
The result of the generation can look similar to this (some artifacts are hidden to declutter the Package Explorer):
 +
 +
 +
[[Image:GeneratorResults.png]]
 +
  
 +
'''Important note:''' If you want to modify the behaviour of generated getters and setters (or have already done so in existing models) you might want to try ''dynamic feature delegation'' (introduced in EMF 2.5). With this pattern, the reflective methods like eGet still call your generated method like getX() and then that calls the dymamic reflective method like eDynamicGet.  It effectively produces the same behavior as "Refective" delegating but does so by delegating through your generated accessors allowing you to specialize those as you could when you used "None"...
  
 +
<br>
 
----
 
----
 
Wikis: [[CDO]] | [[Net4j]] | [[EMF]] | [[Eclipse]]
 
Wikis: [[CDO]] | [[Net4j]] | [[EMF]] | [[Eclipse]]

Latest revision as of 00:57, 29 June 2011


Create an Ecore Model

There's really not much to say about this step. The .ecore file for CDO models is the same as for pure EMF models. Use the Empty EMF Project New Wizard to create an initial project for your model:


EmptyEMFProject.png


Create an ordinary Ecore model file in the models folder. The model1 example model in the usual Ecore model editor looks like follows:


Model1Ecore.png


You can download this Ecore model from here. Its XML form is:

<?xml version="1.0" encoding="UTF-8"?>
<ecore:EPackage xmi:version="2.0"
    xmlns:xmi="http://www.omg.org/XMI" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:ecore="http://www.eclipse.org/emf/2002/Ecore" name="model1"
    nsURI="http://www.eclipse.org/emf/CDO/tests/model1/1.0.0" nsPrefix="model1">
  <eClassifiers xsi:type="ecore:EClass" name="Address">
    <eStructuralFeatures xsi:type="ecore:EAttribute" name="name" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EString"/>
    <eStructuralFeatures xsi:type="ecore:EAttribute" name="street" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EString"/>
    <eStructuralFeatures xsi:type="ecore:EAttribute" name="city" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EString"/>
  </eClassifiers>
  <eClassifiers xsi:type="ecore:EClass" name="Company" eSuperTypes="#//Address">
    <eStructuralFeatures xsi:type="ecore:EReference" name="categories" upperBound="-1"
        eType="#//Category" containment="true"/>
    <eStructuralFeatures xsi:type="ecore:EReference" name="suppliers" upperBound="-1"
        eType="#//Supplier" containment="true"/>
    <eStructuralFeatures xsi:type="ecore:EReference" name="customers" upperBound="-1"
        eType="#//Customer" containment="true"/>
    <eStructuralFeatures xsi:type="ecore:EReference" name="purchaseOrders" upperBound="-1"
        eType="#//PurchaseOrder" containment="true"/>
    <eStructuralFeatures xsi:type="ecore:EReference" name="salesOrders" upperBound="-1"
        eType="#//SalesOrder" containment="true"/>
  </eClassifiers>
  <eClassifiers xsi:type="ecore:EClass" name="Supplier" eSuperTypes="#//Address">
    <eStructuralFeatures xsi:type="ecore:EReference" name="purchaseOrders" upperBound="-1"
        eType="#//PurchaseOrder" eOpposite="#//PurchaseOrder/supplier"/>
  </eClassifiers>
  <eClassifiers xsi:type="ecore:EClass" name="Customer" eSuperTypes="#//Address">
    <eStructuralFeatures xsi:type="ecore:EReference" name="salesOrders" unique="false"
        upperBound="-1" eType="#//SalesOrder" eOpposite="#//SalesOrder/customer"/>
  </eClassifiers>
  <eClassifiers xsi:type="ecore:EClass" name="Order">
    <eStructuralFeatures xsi:type="ecore:EReference" name="orderDetails" upperBound="-1"
        eType="#//OrderDetail" containment="true" eOpposite="#//OrderDetail/order"/>
  </eClassifiers>
  <eClassifiers xsi:type="ecore:EClass" name="OrderDetail">
    <eStructuralFeatures xsi:type="ecore:EReference" name="order" lowerBound="1" eType="#//Order"
        eOpposite="#//Order/orderDetails"/>
    <eStructuralFeatures xsi:type="ecore:EReference" name="product" eType="#//Product"
        eOpposite="#//Product/orderDetails"/>
    <eStructuralFeatures xsi:type="ecore:EAttribute" name="price" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EFloat"/>
  </eClassifiers>
  <eClassifiers xsi:type="ecore:EClass" name="PurchaseOrder" eSuperTypes="#//Order">
    <eStructuralFeatures xsi:type="ecore:EAttribute" name="date" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EDate"/>
    <eStructuralFeatures xsi:type="ecore:EReference" name="supplier" lowerBound="1"
        eType="#//Supplier" eOpposite="#//Supplier/purchaseOrders"/>
  </eClassifiers>
  <eClassifiers xsi:type="ecore:EClass" name="SalesOrder" eSuperTypes="#//Order">
    <eStructuralFeatures xsi:type="ecore:EAttribute" name="id" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EInt"/>
    <eStructuralFeatures xsi:type="ecore:EReference" name="customer" lowerBound="1"
        eType="#//Customer" eOpposite="#//Customer/salesOrders"/>
  </eClassifiers>
  <eClassifiers xsi:type="ecore:EClass" name="Category">
    <eStructuralFeatures xsi:type="ecore:EAttribute" name="name" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EString"/>
    <eStructuralFeatures xsi:type="ecore:EReference" name="categories" upperBound="-1"
        eType="#//Category" containment="true"/>
    <eStructuralFeatures xsi:type="ecore:EReference" name="products" upperBound="-1"
        eType="#//Product" containment="true"/>
  </eClassifiers>
  <eClassifiers xsi:type="ecore:EClass" name="Product">
    <eStructuralFeatures xsi:type="ecore:EAttribute" name="name" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EString"/>
    <eStructuralFeatures xsi:type="ecore:EReference" name="orderDetails" upperBound="-1"
        eType="#//OrderDetail" eOpposite="#//OrderDetail/product"/>
  </eClassifiers>
</ecore:EPackage>

The model project should look similar to this, now:


Model1Project.png


Use the CDO Model Importer

The easiest way to create a CDO enabled GenModel is to use the CDO Migrator utility that is shipped with the CDO SDK. It includes a special Ecore Model Importer that adjusts all the GenModel properties needed to generated CDO native models. Right-click the Ecore model file and select New and Other... and choose the EMF Generator Model New Wizard:

Migrator0.png


Migrator1.png


On the next page, the Select a Model Importer page, select the Ecore model (CDO native) importer:


Migrator2.png


On the next page, the Ecore Import page, click the Load button:


Migrator3.png


On the next page, the Package Selection page, adjust the settings depending on your model and its referenced models:


Migrator4.png


After clicking the Finish button your model project should look similar to this (please note that the CDO marker file META-INF/CDO.MF has also been created by the importer):


Migrator5.png


Proceed with Generate The Model


Use the CDO Model Migrator

If you don't want to use the CDO Model Importer to automatically let a proper GenModel be created for you it is still rather easy to migrate an existing GenModel with the CDO Migrator:


Migrator6.png


In case the generator model was successfully migrated to CDO the following dialog box will appear:


Migrator7.png


Proceed with Generate The Model


Migrate your GenModel Manually

If you don't want to use the CDO Model Importer to automatically let a proper GenModel be created for you it is still rather easy to migrate an existing GenModel by hand.

Modify an Existing GenModel

The EMF generator model for your Ecore model is much like a usual GenModel except for the following four differences:

  • The Feature Delegation property must be set to Reflective
  • The Model Plug-in Variables property should be set to CDO=org.eclipse.emf.cdo
  • The Root Extends Class property must be set to org.eclipse.emf.internal.cdo.CDOObjectImpl
  • The Root Extends Interface property can be set to org.eclipse.emf.cdo.CDOObject


GenModel.png


Note that you do not need to generate an editor if you want to use your model with the CDO User Interface. A dedicated model editor is only needed if you plan to use your model with normal XML based files as well. Even in this scenario it could be simpler to use the EMF Reflective Model Editor though.

You can download this generator model from here. Its XML form is:

<?xml version="1.0" encoding="UTF-8"?>
<genmodel:GenModel xmi:version="2.0"
    xmlns:xmi="http://www.omg.org/XMI" xmlns:ecore="http://www.eclipse.org/emf/2002/Ecore"
    xmlns:genmodel="http://www.eclipse.org/emf/2002/GenModel" modelDirectory="/org.eclipse.emf.cdo.tests.model1/src"
    modelPluginID="org.eclipse.emf.cdo.tests.model1" modelName="Model1" rootExtendsInterface="org.eclipse.emf.cdo.CDOObject"
    rootExtendsClass="org.eclipse.emf.internal.cdo.CDOObjectImpl" reflectiveDelegation="true"
    testsDirectory="" importerID="org.eclipse.emf.importer.ecore" featureDelegation="Reflective"
    complianceLevel="5.0">
  <foreignModel>model1.ecore</foreignModel>
  <modelPluginVariables>CDO=org.eclipse.emf.cdo</modelPluginVariables>
  <genPackages prefix="Model1" basePackage="org.eclipse.emf.cdo.tests" disposableProviderFactory="true"
      ecorePackage="model1.ecore#/">
    <genClasses ecoreClass="model1.ecore#//Address">
      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute model1.ecore#//Address/name"/>
      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute model1.ecore#//Address/street"/>
      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute model1.ecore#//Address/city"/>
    </genClasses>
    <genClasses ecoreClass="model1.ecore#//Company">
      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference model1.ecore#//Company/categories"/>
      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference model1.ecore#//Company/suppliers"/>
      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference model1.ecore#//Company/customers"/>
      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference model1.ecore#//Company/purchaseOrders"/>
      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference model1.ecore#//Company/salesOrders"/>
    </genClasses>
    <genClasses ecoreClass="model1.ecore#//Supplier">
      <genFeatures notify="false" createChild="false" propertySortChoices="true" ecoreFeature="ecore:EReference model1.ecore#//Supplier/purchaseOrders"/>
    </genClasses>
    <genClasses ecoreClass="model1.ecore#//Customer">
      <genFeatures notify="false" createChild="false" propertySortChoices="true" ecoreFeature="ecore:EReference model1.ecore#//Customer/salesOrders"/>
    </genClasses>
    <genClasses ecoreClass="model1.ecore#//Order">
      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference model1.ecore#//Order/orderDetails"/>
    </genClasses>
    <genClasses ecoreClass="model1.ecore#//OrderDetail">
      <genFeatures property="None" notify="false" createChild="false" ecoreFeature="ecore:EReference model1.ecore#//OrderDetail/order"/>
      <genFeatures notify="false" createChild="false" propertySortChoices="true" ecoreFeature="ecore:EReference model1.ecore#//OrderDetail/product"/>
      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute model1.ecore#//OrderDetail/price"/>
    </genClasses>
    <genClasses ecoreClass="model1.ecore#//PurchaseOrder">
      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute model1.ecore#//PurchaseOrder/date"/>
      <genFeatures notify="false" createChild="false" propertySortChoices="true" ecoreFeature="ecore:EReference model1.ecore#//PurchaseOrder/supplier"/>
    </genClasses>
    <genClasses ecoreClass="model1.ecore#//SalesOrder">
      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute model1.ecore#//SalesOrder/id"/>
      <genFeatures notify="false" createChild="false" propertySortChoices="true" ecoreFeature="ecore:EReference model1.ecore#//SalesOrder/customer"/>
    </genClasses>
    <genClasses ecoreClass="model1.ecore#//Category">
      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute model1.ecore#//Category/name"/>
      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference model1.ecore#//Category/categories"/>
      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference model1.ecore#//Category/products"/>
    </genClasses>
    <genClasses ecoreClass="model1.ecore#//Product">
      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute model1.ecore#//Product/name"/>
      <genFeatures notify="false" createChild="false" propertySortChoices="true" ecoreFeature="ecore:EReference model1.ecore#//Product/orderDetails"/>
    </genClasses>
  </genPackages>
</genmodel:GenModel>


Generate The Model

Generate the Java code for your model like you are used to do it:


GenerateTheModel.png


The result of the generation can look similar to this (some artifacts are hidden to declutter the Package Explorer):


GeneratorResults.png


Important note: If you want to modify the behaviour of generated getters and setters (or have already done so in existing models) you might want to try dynamic feature delegation (introduced in EMF 2.5). With this pattern, the reflective methods like eGet still call your generated method like getX() and then that calls the dymamic reflective method like eDynamicGet. It effectively produces the same behavior as "Refective" delegating but does so by delegating through your generated accessors allowing you to specialize those as you could when you used "None"...



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