org.apache.cayenne.commitlog.model.ChangeMap Maven / Gradle / Ivy
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package org.apache.cayenne.commitlog.model;
import java.util.Collection;
import java.util.Map;
import org.apache.cayenne.ObjectId;
/**
* Represents a map of changes for a graph of persistent objects.
*
* @since 4.0
*/
public interface ChangeMap {
/**
* Returns a map of changes. Note the same change sometimes can be present
* in the map twice. If ObjectId of an object has changed during the commit,
* the change will be accessible by both pre-commit and post-commit ID. To
* get unique changes, call {@link #getUniqueChanges()}.
*/
Map getChanges();
Collection getUniqueChanges();
}