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Package: FeatureSegmentConverter
FeatureSegmentConverter
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| FeatureSegmentConverter() |
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| checkAndConvertSegment(VDomainModelReferenceSegment) |
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| convertToListProperty(VDomainModelReferenceSegment, EClass, EditingDomain) |
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| convertToValueProperty(VDomainModelReferenceSegment, EClass, EditingDomain) |
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| findStructuralFeature(EClass, VFeatureDomainModelReferenceSegment) |
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| getSetting(VDomainModelReferenceSegment, EObject) |
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| isApplicable(VDomainModelReferenceSegment) |
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| lambda$0(String, EClass) |
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| lambda$2(VFeatureDomainModelReferenceSegment, EClass) |
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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.featurepath;
15:
16: import java.util.Objects;
17: import java.util.Optional;
18:
19: import org.eclipse.emf.databinding.edit.EMFEditProperties;
20: import org.eclipse.emf.databinding.edit.IEMFEditListProperty;
21: import org.eclipse.emf.databinding.edit.IEMFEditValueProperty;
22: import org.eclipse.emf.ecore.EClass;
23: import org.eclipse.emf.ecore.EObject;
24: import org.eclipse.emf.ecore.EReference;
25: import org.eclipse.emf.ecore.EStructuralFeature;
26: import org.eclipse.emf.ecore.EStructuralFeature.Setting;
27: import org.eclipse.emf.ecore.InternalEObject;
28: import org.eclipse.emf.ecp.common.spi.EMFUtils;
29: import org.eclipse.emf.ecp.common.spi.asserts.Assert;
30: import org.eclipse.emf.ecp.view.spi.model.VDomainModelReferenceSegment;
31: import org.eclipse.emf.ecp.view.spi.model.VFeatureDomainModelReferenceSegment;
32: import org.eclipse.emf.edit.domain.EditingDomain;
33: import org.eclipse.emfforms.internal.core.services.databinding.SegmentConverterListResultImpl;
34: import org.eclipse.emfforms.internal.core.services.databinding.SegmentConverterValueResultImpl;
35: import org.eclipse.emfforms.spi.core.services.databinding.DatabindingFailedException;
36: import org.eclipse.emfforms.spi.core.services.databinding.emf.DomainModelReferenceSegmentConverterEMF;
37: import org.eclipse.emfforms.spi.core.services.databinding.emf.SegmentConverterListResultEMF;
38: import org.eclipse.emfforms.spi.core.services.databinding.emf.SegmentConverterValueResultEMF;
39: import org.osgi.service.component.annotations.Component;
40:
41: /**
42: * A {@link DomainModelReferenceSegmentConverterEMF} for {@link VFeatureDomainModelReferenceSegment
43: * VFeatureDomainModelReferenceSegments}.
44: *
45: * @author Lucas Koehler
46: *
47: */
48: @Component(name = "FeatureSegmentConverter")
49: @SuppressWarnings("restriction")
50: public class FeatureSegmentConverter implements DomainModelReferenceSegmentConverterEMF {
51:
52: @Override
53: public double isApplicable(VDomainModelReferenceSegment segment) {
54:• if (VFeatureDomainModelReferenceSegment.class.isInstance(segment)) {
55: return 1d;
56: }
57: return NOT_APPLICABLE;
58: }
59:
60: @Override
61: public SegmentConverterValueResultEMF convertToValueProperty(VDomainModelReferenceSegment segment,
62: EClass segmentRoot,
63: EditingDomain editingDomain) throws DatabindingFailedException {
64: final VFeatureDomainModelReferenceSegment featureSegment = checkAndConvertSegment(segment);
65:
66: final EStructuralFeature structuralFeature = findStructuralFeature(segmentRoot, featureSegment);
67: final IEMFEditValueProperty valueProperty = EMFEditProperties.value(editingDomain, structuralFeature);
68:• if (EReference.class.isInstance(structuralFeature)) {
69: return new SegmentConverterValueResultImpl(valueProperty,
70: ((EReference) structuralFeature).getEReferenceType());
71: }
72: return new SegmentConverterValueResultImpl(valueProperty, null);
73: }
74:
75: @Override
76: public SegmentConverterListResultEMF convertToListProperty(VDomainModelReferenceSegment segment, EClass segmentRoot,
77: EditingDomain editingDomain) throws DatabindingFailedException {
78: final VFeatureDomainModelReferenceSegment featureSegment = checkAndConvertSegment(segment);
79:
80: final EStructuralFeature structuralFeature = findStructuralFeature(segmentRoot, featureSegment);
81:
82: final IEMFEditListProperty listProperty = EMFEditProperties.list(editingDomain, structuralFeature);
83:• if (EReference.class.isInstance(structuralFeature)) {
84: return new SegmentConverterListResultImpl(listProperty,
85: ((EReference) structuralFeature).getEReferenceType());
86: }
87: return new SegmentConverterListResultImpl(listProperty, null);
88: }
89:
90: @Override
91: public Setting getSetting(VDomainModelReferenceSegment segment, EObject eObject) throws DatabindingFailedException {
92: final VFeatureDomainModelReferenceSegment featureSegment = checkAndConvertSegment(segment);
93:
94: final EStructuralFeature structuralFeature = eObject.eClass()
95: .getEStructuralFeature(featureSegment.getDomainModelFeature());
96:• if (structuralFeature == null) {
97: throw new DatabindingFailedException(String.format(
98: "The given EOject does not contain the segment's feature. The segment was %1$s. The EObject was %2$s.", //$NON-NLS-1$
99: segment, eObject));
100: }
101:• if (structuralFeature.getEType() == null) {
102: throw new DatabindingFailedException(
103: String.format("The eType of the feature %1$s is null.", structuralFeature.getName())); //$NON-NLS-1$
104: }
105:
106: return InternalEObject.class.cast(eObject).eSetting(structuralFeature);
107: }
108:
109: private EStructuralFeature findStructuralFeature(EClass segmentRoot, VFeatureDomainModelReferenceSegment segment)
110: throws DatabindingFailedException {
111: final String featureName = segment.getDomainModelFeature();
112: EStructuralFeature structuralFeature = segmentRoot.getEStructuralFeature(featureName);
113:• if (structuralFeature == null) {
114: // If the feature is not present in the segment's root EClass, try to find it in one of its sub classes
115: final Optional<EStructuralFeature> feature = EMFUtils.getSubClasses(segmentRoot).stream()
116: .map(c -> c.getEStructuralFeature(featureName))
117: .filter(Objects::nonNull)
118: .findFirst();
119:
120: structuralFeature = feature.orElseThrow(
121: () -> new DatabindingFailedException(String.format(
122: "The segment's feature could not be resolved for the given EClass. The segment was %1$s. The EClass was %2$s.", //$NON-NLS-1$
123: segment, segmentRoot)));
124: }
125: return structuralFeature;
126: }
127:
128: private VFeatureDomainModelReferenceSegment checkAndConvertSegment(VDomainModelReferenceSegment segment)
129: throws DatabindingFailedException {
130: Assert.create(segment).notNull();
131: Assert.create(segment).ofClass(VFeatureDomainModelReferenceSegment.class);
132:
133: final VFeatureDomainModelReferenceSegment featureSegment = (VFeatureDomainModelReferenceSegment) segment;
134:
135:• if (featureSegment.getDomainModelFeature() == null) {
136: throw new DatabindingFailedException("The segment's domain model feature must not be null."); //$NON-NLS-1$
137: }
138:• if (featureSegment.getDomainModelFeature().isEmpty()) {
139: throw new DatabindingFailedException("The segment's domain model feature must not be an empty string."); //$NON-NLS-1$
140: }
141:
142: return featureSegment;
143: }
144: }