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Package: EMFFormsStructuralChangeTesterImpl
EMFFormsStructuralChangeTesterImpl
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| EMFFormsStructuralChangeTesterImpl() |
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| addStructuralChangeSegmentTester(StructuralChangeSegmentTester) |
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| addStructuralChangeTesterInternal(StructuralChangeTesterInternal) |
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| isStructureChanged(VDomainModelReference, EObject, ModelChangeNotification) |
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| lambda$0(VDomainModelReferenceSegment, StructuralChangeSegmentTester) |
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| lambda$1(VDomainModelReference, StructuralChangeTesterInternal) |
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| removeStructuralChangeSegmentTester(StructuralChangeSegmentTester) |
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| removeStructuralChangeTesterInternal(StructuralChangeTesterInternal) |
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| setEMFFormsSegmentResolver(EMFFormsSegmentResolver) |
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| setReportService(ReportService) |
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| static {...} |
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| testOnDmr(VDomainModelReference, EObject, ModelChangeNotification) |
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| testOnSegments(VDomainModelReference, EObject, ModelChangeNotification) |
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Coverage
1: /*******************************************************************************
2: * Copyright (c) 2011-2018 EclipseSource Muenchen GmbH and others.
3: *
4: * All rights reserved. This program and the accompanying materials
5: * are made available under the terms of the Eclipse Public License 2.0
6: * which accompanies this distribution, and is available at
7: * https://www.eclipse.org/legal/epl-2.0/
8: *
9: * SPDX-License-Identifier: EPL-2.0
10: *
11: * Contributors:
12: * Lucas Koehler - initial API and implementation
13: ******************************************************************************/
14: package org.eclipse.emfforms.internal.core.services.structuralchange;
15:
16: import java.util.LinkedHashSet;
17: import java.util.Set;
18:
19: import org.eclipse.core.runtime.IStatus;
20: import org.eclipse.emf.common.util.EList;
21: import org.eclipse.emf.ecore.EAttribute;
22: import org.eclipse.emf.ecore.EObject;
23: import org.eclipse.emf.ecore.EReference;
24: import org.eclipse.emf.ecore.EStructuralFeature.Setting;
25: import org.eclipse.emf.ecp.view.spi.model.ModelChangeNotification;
26: import org.eclipse.emf.ecp.view.spi.model.VDomainModelReference;
27: import org.eclipse.emf.ecp.view.spi.model.VDomainModelReferenceSegment;
28: import org.eclipse.emfforms.common.RankingHelper;
29: import org.eclipse.emfforms.spi.common.report.AbstractReport;
30: import org.eclipse.emfforms.spi.common.report.ReportService;
31: import org.eclipse.emfforms.spi.core.services.databinding.DatabindingFailedException;
32: import org.eclipse.emfforms.spi.core.services.databinding.emf.EMFFormsSegmentResolver;
33: import org.eclipse.emfforms.spi.core.services.structuralchange.EMFFormsStructuralChangeTester;
34: import org.eclipse.emfforms.spi.core.services.structuralchange.StructuralChangeSegmentTester;
35: import org.eclipse.emfforms.spi.core.services.structuralchange.StructuralChangeTesterInternal;
36: import org.osgi.service.component.annotations.Component;
37: import org.osgi.service.component.annotations.Reference;
38: import org.osgi.service.component.annotations.ReferenceCardinality;
39: import org.osgi.service.component.annotations.ReferencePolicy;
40:
41: /**
42: * Implementation of {@link EMFFormsStructuralChangeTester}.
43: *
44: * @author Lucas Koehler
45: *
46: */
47: @Component(name = "EMFFormsStructuralChangeTesterImpl")
48: public class EMFFormsStructuralChangeTesterImpl implements EMFFormsStructuralChangeTester {
49:
50: private ReportService reportService;
51: private final Set<StructuralChangeTesterInternal> dmrChangeTesters = new LinkedHashSet<StructuralChangeTesterInternal>();
52: private final Set<StructuralChangeSegmentTester> segmentChangeTesters = new LinkedHashSet<>();
53: private EMFFormsSegmentResolver segmentResolver;
54:
55: private static final RankingHelper<StructuralChangeTesterInternal> DMR_RANKING_HELPER = //
56: new RankingHelper<StructuralChangeTesterInternal>(
57: StructuralChangeTesterInternal.class,
58: StructuralChangeTesterInternal.NOT_APPLICABLE,
59: StructuralChangeTesterInternal.NOT_APPLICABLE);
60:
61: private static final RankingHelper<StructuralChangeSegmentTester> SEGMENTS_RANKING_HELPER = //
62: new RankingHelper<>(
63: StructuralChangeSegmentTester.class, StructuralChangeSegmentTester.NOT_APPLICABLE,
64: StructuralChangeSegmentTester.NOT_APPLICABLE);
65:
66: /**
67: * Sets the {@link ReportService}.
68: *
69: * @param reportService The {@link ReportService}
70: */
71: @Reference(unbind = "-")
72: protected void setReportService(ReportService reportService) {
73: this.reportService = reportService;
74: }
75:
76: /**
77: * Called by the framework to add a {@link StructuralChangeTesterInternal}.
78: *
79: * @param structuralChangeTester The {@link StructuralChangeTesterInternal} to add
80: */
81: @Reference(cardinality = ReferenceCardinality.MULTIPLE, policy = ReferencePolicy.DYNAMIC)
82: protected void addStructuralChangeTesterInternal(StructuralChangeTesterInternal structuralChangeTester) {
83: dmrChangeTesters.add(structuralChangeTester);
84: }
85:
86: /**
87: * Called by the framework to remove a {@link StructuralChangeTesterInternal}.
88: *
89: * @param structuralChangeTester The {@link StructuralChangeTesterInternal} to remove
90: */
91: protected void removeStructuralChangeTesterInternal(StructuralChangeTesterInternal structuralChangeTester) {
92: dmrChangeTesters.remove(structuralChangeTester);
93: }
94:
95: /**
96: * Called by the framework to add a {@link StructuralChangeSegmentTester}.
97: *
98: * @param segmentChangeTester The {@link StructuralChangeSegmentTester} to add
99: */
100: @Reference(cardinality = ReferenceCardinality.MULTIPLE, policy = ReferencePolicy.DYNAMIC)
101: protected void addStructuralChangeSegmentTester(StructuralChangeSegmentTester segmentChangeTester) {
102: segmentChangeTesters.add(segmentChangeTester);
103: }
104:
105: /**
106: * Called by the framework to remove a {@link StructuralChangeSegmentTester}.
107: *
108: * @param segmentChangeTester The {@link StructuralChangeSegmentTester} to remove
109: */
110: protected void removeStructuralChangeSegmentTester(StructuralChangeSegmentTester segmentChangeTester) {
111: segmentChangeTesters.remove(segmentChangeTester);
112: }
113:
114: /**
115: * Sets the {@link EMFFormsSegmentResolver}.
116: *
117: * @param segmentResolver The {@link EMFFormsSegmentResolver}
118: */
119: @Reference(unbind = "-")
120: protected void setEMFFormsSegmentResolver(EMFFormsSegmentResolver segmentResolver) {
121: this.segmentResolver = segmentResolver;
122: }
123:
124: @Override
125: public boolean isStructureChanged(final VDomainModelReference reference, final EObject domainRootObject,
126: ModelChangeNotification notification) {
127:
128: // Changed EAttributes or only touched EReferences do not constitute structural changes
129:• if (EAttribute.class.isInstance(notification.getStructuralFeature())) {
130: return false;
131: }
132:• if (notification.getRawNotification().isTouch()) {
133: return false;
134: }
135:
136: final EList<VDomainModelReferenceSegment> segments = reference.getSegments();
137:• if (segments.isEmpty()) {
138: // fall back to DMR based structural change testing
139: return testOnDmr(reference, domainRootObject, notification);
140: }
141:
142: return testOnSegments(reference, domainRootObject, notification);
143: }
144:
145: /**
146: * Test for structural changes based on the {@link VDomainModelReference VDomainModelReference's} segments.
147: *
148: * @param reference The {@link VDomainModelReference} whose segments are tested
149: * @param domainRootObject The root domain object to resolve and test the segments against
150: * @param notification The {@link ModelChangeNotification} triggering the structural change test
151: * @return <code>true</code> if the structure has changed, <code>false</code> otherwise
152: */
153: private boolean testOnSegments(final VDomainModelReference reference, final EObject domainRootObject,
154: ModelChangeNotification notification) {
155: final EList<VDomainModelReferenceSegment> segments = reference.getSegments();
156: boolean relevantChange = false;
157: EObject currentDomainObject = domainRootObject;
158:• for (int i = 0; i < segments.size(); i++) {
159: final VDomainModelReferenceSegment segment = segments.get(i);
160: final StructuralChangeSegmentTester segmentTester = SEGMENTS_RANKING_HELPER
161: .getHighestRankingElement(segmentChangeTesters, tester -> tester.isApplicable(segment));
162:• if (segmentTester == null) {
163: reportService.report(new AbstractReport(String.format(
164: "Structural changes of the DMR: %1$s could not be analyzed because no suitable StructuralChangeSegmentTester was available for segment %2$s.", //$NON-NLS-1$
165: reference, segment), IStatus.WARNING));
166: return false;
167: }
168:
169: final Setting setting;
170: try {
171: setting = segmentResolver.resolveSegment(segment, currentDomainObject);
172: } catch (final DatabindingFailedException ex) {
173: reportService.report(new AbstractReport(ex,
174: "Could not finish structural change calculation.")); //$NON-NLS-1$
175: break;
176: }
177:
178: relevantChange |= segmentTester.isStructureChanged(segment, currentDomainObject, notification);
179:
180:• if (relevantChange || !EReference.class.isInstance(setting.getEStructuralFeature())) {
181: return relevantChange;
182: }
183:
184: // Do not resolve the last setting and convert its value because the last value is not needed and might be
185: // an EList because the last segment may represent a multi reference
186:• if (i == segments.size() - 1) {
187: break;
188: }
189: // The value of the Setting is an EObject because its EStructuralFeature is an EReference.
190: currentDomainObject = (EObject) setting.get(true);
191: }
192:
193: return relevantChange;
194: }
195:
196: /**
197: * Test for structural changes based on the whole {@link VDomainModelReference}.
198: *
199: * @param reference The {@link VDomainModelReference} to test
200: * @param domainRootObject The root domain object to resolve and test the DMR against
201: * @param notification The {@link ModelChangeNotification} triggering the structural change test
202: * @return <code>true</code> if the structure has changed, <code>false</code> otherwise
203: */
204: private boolean testOnDmr(final VDomainModelReference reference, final EObject domainRootObject,
205: ModelChangeNotification notification) {
206: final StructuralChangeTesterInternal bestTester = DMR_RANKING_HELPER.getHighestRankingElement(
207: dmrChangeTesters, tester -> tester.isApplicable(reference));
208:
209:• if (bestTester == null) {
210: reportService.report(new AbstractReport("Structural changes of the DMR: " + reference //$NON-NLS-1$
211: + "could not be analyzed because no suitable StructuralChangeTesterInternal was available.", //$NON-NLS-1$
212: IStatus.WARNING));
213: return false;
214: }
215: return bestTester.isStructureChanged(reference, domainRootObject, notification);
216: }
217:
218: }