Package: DetachedInstanceMerger

DetachedInstanceMerger

name	instruction	branch	complexity	line	method
DetachedInstanceMerger(UnitOfWorkImpl)	M: 0 C: 9 100%	M: 0 C: 0 100%	M: 0 C: 1 100%	M: 0 C: 3 100%	M: 0 C: 1 100%
mergeChangesFromDetachedToManagedInstance(ObjectChangeSet, Descriptor)	M: 12 C: 45 79%	M: 3 C: 5 63%	M: 3 C: 2 40%	M: 0 C: 11 100%	M: 0 C: 1 100%
static {...}	M: 0 C: 1 100%	M: 0 C: 0 100%	M: 0 C: 1 100%	M: 0 C: 1 100%	M: 0 C: 1 100%

Coverage

1: /**
2: * Copyright (C) 2020 Czech Technical University in Prague
3: *
4: * This program is free software: you can redistribute it and/or modify it under
5: * the terms of the GNU General Public License as published by the Free Software
6: * Foundation, either version 3 of the License, or (at your option) any
7: * later version.
8: *
9: * This program is distributed in the hope that it will be useful, but WITHOUT
10: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11: * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
12: * details. You should have received a copy of the GNU General Public License
13: * along with this program. If not, see <http://www.gnu.org/licenses/>.
14: */
15: package cz.cvut.kbss.jopa.sessions;
16:
17: import cz.cvut.kbss.jopa.model.descriptors.Descriptor;
18: import cz.cvut.kbss.jopa.model.metamodel.FieldSpecification;
19: import cz.cvut.kbss.jopa.sessions.merge.DetachedValueMerger;
20: import cz.cvut.kbss.jopa.sessions.merge.ValueMerger;
21: import cz.cvut.kbss.jopa.utils.EntityPropertiesUtils;
22:
23: class DetachedInstanceMerger {
24:
25: private final ValueMerger valueMerger;
26:
27: DetachedInstanceMerger(UnitOfWorkImpl uow) {
28: this.valueMerger = new DetachedValueMerger(uow);
29: }
30:
31: /**
32: * Merges changes from the detached instance being merged into persistence context (clone in the specified change
33: * set) into the corresponding managed instance (original in the change set).
34: *
35: * @param changeSet Set of changes to apply to the managed instance
36: * @return Managed instance with changes merged into it
37: */
38: Object mergeChangesFromDetachedToManagedInstance(ObjectChangeSet changeSet, Descriptor descriptor) {
39:• assert changeSet != null;
40:• assert changeSet.getCloneObject() != null;
41: final Object original = changeSet.getChangedObject();
42:• assert original != null;
43:
44:• for (ChangeRecord change : changeSet.getChanges()) {
45: final FieldSpecification<?, ?> fs = change.getAttribute();
46: final Object origValue = EntityPropertiesUtils.getAttributeValue(fs, original);
47: valueMerger
48: .mergeValue(fs, original, origValue, change.getNewValue(), descriptor.getAttributeDescriptor(fs));
49: }
50: return original;
51: }
52: }