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Package: EMFFormsIndexDMRExpander
EMFFormsIndexDMRExpander
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| EMFFormsIndexDMRExpander() |
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| activate(BundleContext) |
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| checkListType(EStructuralFeature) |
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| deactivate(BundleContext) |
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| getEMFFormsDomainExpander() |
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| isApplicable(VDomainModelReference) |
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| prepareDomainObject(VDomainModelReference, EObject) |
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| setEMFFormsDatabinding(EMFFormsDatabinding) |
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| setEMFFormsDomainExpander(EMFFormsDomainExpander) |
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| setReportService(ReportService) |
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Coverage
1: /*******************************************************************************
2: * Copyright (c) 2011-2015 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.domainexpander.index;
15:
16: import java.util.List;
17:
18: import org.eclipse.core.databinding.property.value.IValueProperty;
19: import org.eclipse.emf.ecore.EClass;
20: import org.eclipse.emf.ecore.EObject;
21: import org.eclipse.emf.ecore.EReference;
22: import org.eclipse.emf.ecore.EStructuralFeature;
23: import org.eclipse.emf.ecore.util.EcoreUtil;
24: import org.eclipse.emf.ecp.common.spi.asserts.Assert;
25: import org.eclipse.emf.ecp.view.spi.indexdmr.model.VIndexDomainModelReference;
26: import org.eclipse.emf.ecp.view.spi.model.VDomainModelReference;
27: import org.eclipse.emf.ecp.view.spi.model.VFeaturePathDomainModelReference;
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.databinding.DatabindingFailedException;
32: import org.eclipse.emfforms.spi.core.services.databinding.EMFFormsDatabinding;
33: import org.eclipse.emfforms.spi.core.services.domainexpander.EMFFormsDMRExpander;
34: import org.eclipse.emfforms.spi.core.services.domainexpander.EMFFormsDomainExpander;
35: import org.eclipse.emfforms.spi.core.services.domainexpander.EMFFormsExpandingFailedException;
36: import org.osgi.framework.BundleContext;
37: import org.osgi.framework.ServiceReference;
38: import org.osgi.service.component.annotations.Activate;
39: import org.osgi.service.component.annotations.Component;
40: import org.osgi.service.component.annotations.Deactivate;
41: import org.osgi.service.component.annotations.Reference;
42:
43: /**
44: * An {@link EMFFormsDMRExpander} for {@link VIndexDomainModelReference VIndexDomainModelReferences}.
45: *
46: * @author Lucas Koehler
47: *
48: */
49: @Component(name = "EMFFormsIndexDMRExpander")
50: public class EMFFormsIndexDMRExpander implements EMFFormsDMRExpander {
51:
52: private ReportService reportService;
53: private EMFFormsDomainExpander domainExpander;
54: private EMFFormsDatabinding databindingService;
55: private BundleContext bundleContext;
56: private ServiceReference<EMFFormsDomainExpander> eMFFormsDomainExpanderServiceReference;
57:
58: /**
59: * Called by the framework to set the {@link ReportService}.
60: *
61: * @param reportService The {@link ReportService}
62: */
63: @Reference(unbind = "-")
64: protected void setReportService(ReportService reportService) {
65: this.reportService = reportService;
66:
67: }
68:
69: /**
70: * Called by the framework when the component gets activated.
71: *
72: * @param bundleContext The {@link BundleContext}
73: */
74: @Activate
75: protected void activate(BundleContext bundleContext) {
76: this.bundleContext = bundleContext;
77: }
78:
79: /**
80: * Called by the framework when the component gets deactivated.
81: *
82: * @param bundleContext The {@link BundleContext}
83: */
84: @Deactivate
85: protected void deactivate(BundleContext bundleContext) {
86:• if (eMFFormsDomainExpanderServiceReference != null) {
87: bundleContext.ungetService(eMFFormsDomainExpanderServiceReference);
88: domainExpander = null;
89: }
90: }
91:
92: private EMFFormsDomainExpander getEMFFormsDomainExpander() {
93:• if (domainExpander == null) {
94: eMFFormsDomainExpanderServiceReference = bundleContext.getServiceReference(EMFFormsDomainExpander.class);
95:• if (eMFFormsDomainExpanderServiceReference == null) {
96: throw new IllegalStateException("No EMFFormsDomainExpander available!"); //$NON-NLS-1$
97: }
98: domainExpander = bundleContext.getService(eMFFormsDomainExpanderServiceReference);
99: }
100: return domainExpander;
101: }
102:
103: /**
104: * Helper method for tests. This is quite ugly!
105: *
106: * @param domainExpander The EMFFormsDomainExpander to use
107: */
108: void setEMFFormsDomainExpander(EMFFormsDomainExpander domainExpander) {
109: this.domainExpander = domainExpander;
110: }
111:
112: /**
113: * Called by the framework to set the {@link EMFFormsDatabinding}.
114: *
115: * @param emfFormsDatabinding The {@link EMFFormsDatabinding}
116: */
117: @Reference(unbind = "-")
118: protected void setEMFFormsDatabinding(EMFFormsDatabinding emfFormsDatabinding) {
119: databindingService = emfFormsDatabinding;
120: }
121:
122: /**
123: * {@inheritDoc}
124: *
125: * @see org.eclipse.emfforms.spi.core.services.domainexpander.EMFFormsDMRExpander#prepareDomainObject(org.eclipse.emf.ecp.view.spi.model.VDomainModelReference,
126: * org.eclipse.emf.ecore.EObject)
127: */
128: @Override
129: public void prepareDomainObject(VDomainModelReference domainModelReference, EObject domainObject)
130: throws EMFFormsExpandingFailedException {
131: Assert.create(domainModelReference).notNull();
132: Assert.create(domainObject).notNull();
133: Assert.create(domainModelReference).ofClass(VIndexDomainModelReference.class);
134:
135: final VIndexDomainModelReference indexReference = VIndexDomainModelReference.class.cast(domainModelReference);
136: final VDomainModelReference targetDMR = indexReference.getTargetDMR();
137:
138: VDomainModelReference prefixDMR;
139:• if (indexReference.getPrefixDMR() != null) {
140: prefixDMR = indexReference.getPrefixDMR();
141: } else {
142:• if (indexReference.getDomainModelEFeature() == null) {
143: throw new EMFFormsExpandingFailedException(
144: "The index domain model reference's domain model e feature must not be null when the reference's prefix dmr is null."); //$NON-NLS-1$
145: }
146: final VFeaturePathDomainModelReference prefixFeatureDMR = VViewFactory.eINSTANCE
147: .createFeaturePathDomainModelReference();
148: prefixFeatureDMR.setDomainModelEFeature(indexReference.getDomainModelEFeature());
149: prefixFeatureDMR.getDomainModelEReferencePath().addAll(indexReference.getDomainModelEReferencePath());
150: prefixDMR = prefixFeatureDMR;
151: }
152:
153: IValueProperty valueProperty;
154: try {
155: valueProperty = databindingService.getValueProperty(prefixDMR, domainObject);
156: } catch (final DatabindingFailedException ex) {
157: throw new EMFFormsExpandingFailedException(
158: "Domain Expansion failed due to a failed databinding: " + ex.getMessage()); //$NON-NLS-1$
159: }
160:
161: final EStructuralFeature listEStructuralFeature = (EStructuralFeature) valueProperty.getValueType();
162:
163: checkListType(listEStructuralFeature);
164: getEMFFormsDomainExpander().prepareDomainObject(prefixDMR, domainObject);
165:
166: // type of the list items
167: final EClass featureEClass = EClass.class.cast(listEStructuralFeature.getEType());
168:
169: // need unchecked type cast because IValueProperty#getValue always returns an Object.
170: @SuppressWarnings("unchecked")
171: final List<EObject> list = (List<EObject>) valueProperty.getValue(domainObject);
172: EObject targetDomainObject;
173: // fill up all indices of the list with new instances up to the index defined by the index dmr.
174:• if (!featureEClass.isAbstract() && !featureEClass.isInterface()) {
175:• for (int i = 0; i <= indexReference.getIndex(); i++) {
176:• if (list.size() <= i) {
177: list.add(EcoreUtil.create(featureEClass));
178:• } else if (list.get(i) == null) {
179: list.set(i, EcoreUtil.create(featureEClass));
180: }
181: }
182: targetDomainObject = list.get(indexReference.getIndex());
183: } else {
184: throw new EMFFormsExpandingFailedException(
185: "Could not expand the VIndexDomainModelReference because the type of the prefix DMR's domain model e feature is either abstract or an interface. Hence, no new instances of this type can be created."); //$NON-NLS-1$
186: }
187:
188: getEMFFormsDomainExpander().prepareDomainObject(targetDMR, targetDomainObject);
189: }
190:
191: /**
192: * {@inheritDoc}
193: *
194: * @see org.eclipse.emfforms.spi.core.services.domainexpander.EMFFormsDMRExpander#isApplicable(org.eclipse.emf.ecp.view.spi.model.VDomainModelReference)
195: */
196: @Override
197: public double isApplicable(VDomainModelReference domainModelReference) {
198:• if (domainModelReference == null) {
199: reportService.report(new AbstractReport("Warning: The given domain model reference was null.")); //$NON-NLS-1$
200: return NOT_APPLICABLE;
201: }
202:• if (VIndexDomainModelReference.class.isInstance(domainModelReference)) {
203: return 5d;
204: }
205: return NOT_APPLICABLE;
206: }
207:
208: /**
209: * Checks whether the given structural feature references a proper list.
210: *
211: * @param structuralFeature The feature to check
212: * @throws EMFFormsExpandingFailedException if the structural feature doesn't reference a proper list.
213: */
214: private void checkListType(EStructuralFeature structuralFeature) throws EMFFormsExpandingFailedException {
215:• if (!structuralFeature.isMany()) {
216: throw new EMFFormsExpandingFailedException(
217: "The VIndexDomainModelReference's domainModelEFeature must reference a list."); //$NON-NLS-1$
218: }
219:• if (!EReference.class.isInstance(structuralFeature)) {
220: throw new EMFFormsExpandingFailedException(
221: "The VIndexDomainModelReference's domainModelEFeature must reference a list of EObjects."); //$NON-NLS-1$
222: }
223: }
224: }