|
1
|
/**
|
|
2
|
* Copyright (C) 2016 EDIT
|
|
3
|
* European Distributed Institute of Taxonomy
|
|
4
|
* http://www.e-taxonomy.eu
|
|
5
|
*
|
|
6
|
* The contents of this file are subject to the Mozilla Public License Version 1.1
|
|
7
|
* See LICENSE.TXT at the top of this package for the full license terms.
|
|
8
|
*/
|
|
9
|
package eu.etaxonomy.cdm.hibernate;
|
|
10
|
|
|
11
|
import java.util.Collection;
|
|
12
|
|
|
13
|
import org.apache.logging.log4j.LogManager;import org.apache.logging.log4j.Logger;
|
|
14
|
import org.hibernate.LazyInitializationException;
|
|
15
|
|
|
16
|
/**
|
|
17
|
* Helper class to remove null values from collections which are left over artifacts due to
|
|
18
|
* https://hibernate.atlassian.net/browse/HHH-9751
|
|
19
|
*
|
|
20
|
* @author a.kohlbecker
|
|
21
|
* @since Jun 13, 2016
|
|
22
|
*/
|
|
23
|
public class HHH_9751_Util {
|
|
24
|
|
|
25
|
private static final Logger logger = LogManager.getLogger(HHH_9751_Util.class);
|
|
26
|
|
|
27
|
/**
|
|
28
|
* @param collection
|
|
29
|
* @return the number of null values removed from the collection
|
|
30
|
*/
|
|
31
|
static public int removeAllNull(Collection<?> collection) {
|
|
32
|
if (true) {
|
|
33
|
return 0;
|
|
34
|
}
|
|
35
|
int cnt = 0;
|
|
36
|
try {
|
|
37
|
|
|
38
|
if (collection.contains(null)){
|
|
39
|
while(collection.contains(null)){
|
|
40
|
cnt++;
|
|
41
|
collection.remove(null);
|
|
42
|
}
|
|
43
|
}
|
|
44
|
|
|
45
|
} catch (LazyInitializationException e) {
|
|
46
|
logger.info("Cannot clean up uninitialized children without a session, skipping.");
|
|
47
|
}
|
|
48
|
return cnt ;
|
|
49
|
}
|
|
50
|
}
|