org.apache.cayenne.configuration
Class DefaultDataChannelDescriptorMerger

java.lang.Object
  extended by org.apache.cayenne.configuration.DefaultDataChannelDescriptorMerger
All Implemented Interfaces:
DataChannelDescriptorMerger

public class DefaultDataChannelDescriptorMerger
extends java.lang.Object
implements DataChannelDescriptorMerger

A default implementation of DataChannelDescriptorMerger. The general rule of merge is that the order of descriptors on the merge list matters. If there are two conflicting metadata objects belonging to two descriptors, an object from the last descriptor takes precedence over the object from the first one. This way it is easy to override pieces of metadata. This is also similar to how DI modules are merged in Cayenne. So this is how the merge works:

Since:
3.1

Constructor Summary
DefaultDataChannelDescriptorMerger()
           
 
Method Summary
protected  DataNodeDescriptor cloneDataNodeDescriptor(DataNodeDescriptor original, DataChannelDescriptor targetOwner)
           
 DataChannelDescriptor merge(DataChannelDescriptor... descriptors)
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

DefaultDataChannelDescriptorMerger

public DefaultDataChannelDescriptorMerger()
Method Detail

merge

public DataChannelDescriptor merge(DataChannelDescriptor... descriptors)
Specified by:
merge in interface DataChannelDescriptorMerger

cloneDataNodeDescriptor

protected DataNodeDescriptor cloneDataNodeDescriptor(DataNodeDescriptor original,
                                                     DataChannelDescriptor targetOwner)


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