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Package: IndexDmrSegmentGenerator
IndexDmrSegmentGenerator
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| IndexDmrSegmentGenerator() |
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| createIndexSegment(String, int) |
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| generateSegments(VDomainModelReference) |
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| getEMFFormsSegmentGenerator() |
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| isApplicable(VDomainModelReference) |
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| reportFailure(String, VDomainModelReference) |
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| setEMFFormsSegmentGenerator(EMFFormsSegmentGenerator) |
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| setReportService(ReportService) |
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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.segments.index;
15:
16: import java.util.Collections;
17: import java.util.LinkedList;
18: import java.util.List;
19:
20: import org.eclipse.core.runtime.IStatus;
21: import org.eclipse.emf.ecore.EReference;
22: import org.eclipse.emf.ecp.common.spi.asserts.Assert;
23: import org.eclipse.emf.ecp.view.spi.indexdmr.model.VIndexDomainModelReference;
24: import org.eclipse.emf.ecp.view.spi.indexdmr.model.VIndexdmrPackage;
25: import org.eclipse.emf.ecp.view.spi.model.VDomainModelReference;
26: import org.eclipse.emf.ecp.view.spi.model.VDomainModelReferenceSegment;
27: import org.eclipse.emf.ecp.view.spi.model.VFeatureDomainModelReferenceSegment;
28: import org.eclipse.emf.ecp.view.spi.model.VViewFactory;
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.segments.DmrSegmentGenerator;
32: import org.eclipse.emfforms.spi.core.services.segments.EMFFormsSegmentGenerator;
33: import org.eclipse.emfforms.spi.view.indexsegment.model.VIndexDomainModelReferenceSegment;
34: import org.eclipse.emfforms.spi.view.indexsegment.model.VIndexsegmentFactory;
35: import org.osgi.framework.BundleContext;
36: import org.osgi.framework.FrameworkUtil;
37: import org.osgi.framework.ServiceReference;
38: import org.osgi.service.component.annotations.Component;
39: import org.osgi.service.component.annotations.Reference;
40:
41: /**
42: * {@link DmrSegmentGenerator} that generates {@link VDomainModelReferenceSegment segments} for a
43: * {@link VIndexDomainModelReference}.
44: *
45: * @author Lucas Koehler
46: *
47: */
48: @Component(name = "IndexDmrSegmentGenerator")
49: public class IndexDmrSegmentGenerator implements DmrSegmentGenerator {
50:
51: private EMFFormsSegmentGenerator emfFormsSegmentGenerator;
52: private ReportService reportService;
53:
54: /**
55: * Sets the {@link ReportService}.
56: *
57: * @param reportService The {@link ReportService}
58: */
59: @Reference(unbind = "-")
60: void setReportService(ReportService reportService) {
61: this.reportService = reportService;
62: }
63:
64: @Override
65: public double isApplicable(VDomainModelReference reference) {
66: Assert.create(reference).notNull();
67:• if (reference.eClass() == VIndexdmrPackage.Literals.INDEX_DOMAIN_MODEL_REFERENCE) {
68: return 5d;
69: }
70: return NOT_APPLICABLE;
71: }
72:
73: @Override
74: public List<VDomainModelReferenceSegment> generateSegments(VDomainModelReference reference) {
75: Assert.create(reference).notNull();
76:• if (reference.eClass() != VIndexdmrPackage.Literals.INDEX_DOMAIN_MODEL_REFERENCE) {
77: throw new IllegalArgumentException(
78: String.format("The given DMR was no index domain model reference. The DMR was: %s", reference)); //$NON-NLS-1$
79: }
80: final VIndexDomainModelReference indexDmr = (VIndexDomainModelReference) reference;
81: final List<VDomainModelReferenceSegment> result = new LinkedList<>();
82:
83: // If the index dmr has a prefix dmr, use it to resolve the path to the indexed list.
84: // Otherwise, use the index dmr's reference path and domain model e feature
85:• if (indexDmr.getPrefixDMR() != null) {
86: final List<VDomainModelReferenceSegment> prefixSegments = getEMFFormsSegmentGenerator()
87: .generateSegments(indexDmr.getPrefixDMR());
88:• if (prefixSegments.isEmpty()) {
89: reportFailure("no segments could be generated for the prefix dmr", indexDmr); //$NON-NLS-1$
90: return Collections.emptyList();
91: }
92:
93: // Transform the last segment of the prefix to an index segment and set its index
94: final VFeatureDomainModelReferenceSegment lastPrefixSegment = (VFeatureDomainModelReferenceSegment) prefixSegments
95: .get(prefixSegments.size() - 1);
96: final VIndexDomainModelReferenceSegment indexSegment = createIndexSegment(
97: lastPrefixSegment.getDomainModelFeature(), indexDmr.getIndex());
98:
99: // Add the path to the index segment (if present) and the index segment to the result
100: prefixSegments.remove(lastPrefixSegment);
101: result.addAll(prefixSegments);
102: result.add(indexSegment);
103: } else {
104: // Create segments for reference path
105:• for (final EReference eReference : indexDmr.getDomainModelEReferencePath()) {
106: final VFeatureDomainModelReferenceSegment segment = VViewFactory.eINSTANCE
107: .createFeatureDomainModelReferenceSegment();
108: segment.setDomainModelFeature(eReference.getName());
109: result.add(segment);
110: }
111: // Create segment for the domain model e feature
112:• if (indexDmr.getDomainModelEFeature() != null) {
113: final VIndexDomainModelReferenceSegment indexSegment = createIndexSegment(
114: indexDmr.getDomainModelEFeature().getName(), indexDmr.getIndex());
115: result.add(indexSegment);
116: } else {
117: reportFailure("it has no prefix dmr and its domain model e feature is null", indexDmr); //$NON-NLS-1$
118: return Collections.emptyList();
119: }
120: }
121:
122: // Get the segments for the target dmr and add them to the result
123: final List<VDomainModelReferenceSegment> targetSegments = getEMFFormsSegmentGenerator()
124: .generateSegments(indexDmr.getTargetDMR());
125:• if (targetSegments.isEmpty()) {
126: reportFailure("no target segments could be generated", indexDmr); //$NON-NLS-1$
127: return Collections.emptyList();
128: }
129: result.addAll(targetSegments);
130:
131: return result;
132: }
133:
134: private VIndexDomainModelReferenceSegment createIndexSegment(String domainModelFeature, int index) {
135: final VIndexDomainModelReferenceSegment indexSegment = VIndexsegmentFactory.eINSTANCE
136: .createIndexDomainModelReferenceSegment();
137: indexSegment.setDomainModelFeature(domainModelFeature);
138: indexSegment.setIndex(index);
139: return indexSegment;
140: }
141:
142: private void reportFailure(String reason, VDomainModelReference indexDmr) {
143: final StringBuilder sb = new StringBuilder();
144: sb.append("Could not generate segments for the index dmr because "); //$NON-NLS-1$
145: sb.append(reason);
146: sb.append(". The index DMR was: %s"); //$NON-NLS-1$
147: reportService.report(new AbstractReport(String.format(sb.toString(), indexDmr), IStatus.WARNING));
148: }
149:
150: // Manually get the EMFFormsSegmentGenerator to avoid a circular dependency
151: private EMFFormsSegmentGenerator getEMFFormsSegmentGenerator() {
152:• if (emfFormsSegmentGenerator == null) {
153: final BundleContext bundleContext = FrameworkUtil.getBundle(IndexDmrSegmentGenerator.class)
154: .getBundleContext();
155: final ServiceReference<EMFFormsSegmentGenerator> serviceReference = bundleContext
156: .getServiceReference(EMFFormsSegmentGenerator.class);
157: emfFormsSegmentGenerator = bundleContext.getService(serviceReference);
158: }
159: return emfFormsSegmentGenerator;
160: }
161:
162: /**
163: * Sets the {@link EMFFormsSegmentGenerator}.
164: * <p>
165: * Package protected because this method should only be used for testing
166: *
167: * @param generator The {@link EMFFormsSegmentGenerator}
168: */
169: void setEMFFormsSegmentGenerator(EMFFormsSegmentGenerator generator) {
170: emfFormsSegmentGenerator = generator;
171: }
172: }