Implementing Proxy Indirection in Java

To enable proxy indirection in Java code, use the following API for ObjectReferenceMapping:

useProxyIndirection() - Indicates that TopLink should use proxy indirection for this mapping. When the source object is read from the database, a proxy for the target object is created and used in place of the "real" target object. When any method other than getString() is called on the proxy, the "real" data will be read from the database.
Example 5-4 Proxy indirection Example

The following code example illustrates using proxy indirection.

// Define the 1:1 mapping, and specify that Proxy Indirection should be used
OneToOneMapping addressMapping = new OneToOneMapping();
addressMapping.setAttributeName("address");
addressMapping.setReferenceClass(AddressImpl.class);
addressMapping.setForeignKeyFieldName("ADDRESS_ID");
addressMapping.setSetMethodName("setAddress");
addressMapping.setGetMethodName("getAddress");
addressMapping.useProxyIndirection();
descriptor.addMapping(addressMapping);
. . .