@Override
public void storeHeldForeignKey(Relationship relationship, RecordReference foreignKey) {
if (!relationship.isHoldForeignRecord())
throw new IllegalArgumentException(
"This relationship is not allowed to hold on to foreign records");
preferences
.edit()
.putString(getHeldForeignKeyPrefKey(relationship), foreignKey.serialise())
.commit();
}
@Override
public RecordReference retrieveHeldForeignKey(Relationship relationship) {
if (!relationship.isHoldForeignRecord())
throw new IllegalArgumentException(
"This relationship is not allowed to hold on to foreign records");
String prefKey = getHeldForeignKeyPrefKey(relationship);
String serialisedForeignKey = preferences.getString(prefKey, null);
if (serialisedForeignKey != null)
try {
return relationship
.getRelatedForm()
.getSchema()
.createRecordReference(serialisedForeignKey);
} catch (Exception e) {
deleteHeldForeignKey(relationship);
}
return null;
}