...
MergeResult is an abstract object and it is extended by either MergeSuccess or MergeConflict. The MergeConflict represents a situation when MergeBehavioyr MergeBehaviour couldn't merge objects automatically. The MergeSuccess represents situations when:
- local object overrides another,
- foreign object overrides another,
- local and foreign objects are merged,
- we do not have to change any objects.
...
| Code Block | ||||||||
|---|---|---|---|---|---|---|---|---|
| ||||||||
package org.openmrs.module.fhir.api.merge;
import org.openmrs.BaseOpenmrsData;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.net.URI;
public class TestMergeBehaviour implements MergeBehaviour<BaseOpenmrsData> {
@Override
public MergeResult<BaseOpenmrsData> resolveDiff(Class<? extends BaseOpenmrsData> clazz,
BaseOpenmrsData local, BaseOpenmrsData foreign) {
MergeResult<BaseOpenmrsData> result;
BaseOpenmrsData merged;
if (local.getDateChanged().after(foreign.getDateChanged())) {
merged = deepClone(foreign);
result = new MergeSuccess<>(clazz, local, foreign, merged, true, false);
} else {
result = new MergeConflict<>(clazz, local, foreign);
}
return result;
}
private BaseOpenmrsData deepClone(BaseOpenmrsData org) {
BaseOpenmrsData clone = null;
try {
ByteArrayOutputStream baOUT = new ByteArrayOutputStream();
ObjectOutputStream oOUT = new ObjectOutputStream(baOUT);
oOUT.writeObject(org);
ByteArrayInputStream baIN = new ByteArrayInputStream(baOUT.toByteArray());
ObjectInputStream oIN = new ObjectInputStream(baIN);
clone = (BaseOpenmrsData) oIN.readObject();
} catch (IOException | ClassNotFoundException e) {
e.printStackTrace();
}
return clone;
}
} |
...