net.sf.farrago.catalog
Class MockMetadataFactory

java.lang.Object
  org.eigenbase.jmi.mem.JmiMemFactory
      net.sf.farrago.catalog.MockMetadataFactory

Direct Known Subclasses:

MockFarragoMetadataFactory.FactoryImpl

public abstract class MockMetadataFactory
extends JmiMemFactory

Helps create a mock implementation of an MDR metadata factory interface. Mock implementation of metadata factories which implements the MDR interfaces using dynamic proxies. Since this implementation does not persist objects, or even require a repository instance, it is ideal for testing purposes.

The name of the class is misleading; it is not itself a metadata factory. MockMetadataFactory uses dynamic proxies (see Proxy) to generate the necessary interfaces on the fly. Inside every proxy is an instance of JmiMemFactory.ElementImpl, which stores attributes in a HashMap and implements the InvocationHandler interface required by the proxy. There are specialized subtypes of ElementImpl for packages and classes.

Since there is no repository to provide metadata, the factory infers the object model from the Java interfaces:

• Each 'get' method is assumed to be an attribute.
• If the return type extends RefClass, a factory is created when the object is initialized.
• If the return type extends RefPackage, a sub-package is created when the object is initialized.
• If the return type extends Collection, a collection attribute is created.
• All other types are presumed to be regular attributes.

Version:

$Id: //open/dev/farrago/src/net/sf/farrago/catalog/MockMetadataFactory.java#15 $

Nested Class Summary

static class	MockMetadataFactory.JmiPrinter Formats a JMI object as XML.
(package private) static class	MockMetadataFactory.JmiVisitor Abstract base class for an iterator over a JMI object and its children.

Nested classes/interfaces inherited from class org.eigenbase.jmi.mem.JmiMemFactory

JmiMemFactory.ElementImpl, JmiMemFactory.MofPackageImpl, JmiMemFactory.RefAssociationImpl, JmiMemFactory.RefClassImpl, JmiMemFactory.RefPackageImpl

Constructor Summary

MockMetadataFactory()

Method Summary

protected void

initRelationshipMap() Registers relationships which we want to be maintained as two-way relationships.

Methods inherited from class org.eigenbase.jmi.mem.JmiMemFactory

createImpl, createRelationship, createRelationship, defineMetaObject, getModelGraph, getPersistentMofId, getRootPackage, getRootPackageImpl, mapMofId, newRefPackage, newRootPackage, parseGetter, setPersistentMofId, sortMethods

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MockMetadataFactory

public MockMetadataFactory()

Method Detail

initRelationshipMap

protected void initRelationshipMap()

Registers relationships which we want to be maintained as two-way relationships. This is necessary because we cannot deduce inverse relationships using Java reflection.

Derived classes can add override to define additional relationships.