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Package: IndexSegmentConverter
IndexSegmentConverter
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| IndexSegmentConverter() |
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| checkAndConvertSegment(VDomainModelReferenceSegment) |
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| checkListType(EStructuralFeature) |
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| convertToListProperty(VDomainModelReferenceSegment, EClass, EditingDomain) |
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| convertToValueProperty(VDomainModelReferenceSegment, EClass, EditingDomain) |
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| getSetting(VDomainModelReferenceSegment, EObject) |
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| isApplicable(VDomainModelReferenceSegment) |
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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 org.eclipse.emf.databinding.IEMFValueProperty;
17: import org.eclipse.emf.databinding.internal.EMFValuePropertyDecorator;
18: import org.eclipse.emf.ecore.EClass;
19: import org.eclipse.emf.ecore.EObject;
20: import org.eclipse.emf.ecore.EReference;
21: import org.eclipse.emf.ecore.EStructuralFeature;
22: import org.eclipse.emf.ecore.EStructuralFeature.Setting;
23: import org.eclipse.emf.ecp.common.spi.asserts.Assert;
24: import org.eclipse.emf.ecp.view.spi.model.VDomainModelReferenceSegment;
25: import org.eclipse.emf.edit.domain.EditingDomain;
26: import org.eclipse.emfforms.internal.core.services.databinding.SegmentConverterValueResultImpl;
27: import org.eclipse.emfforms.spi.core.services.databinding.DatabindingFailedException;
28: import org.eclipse.emfforms.spi.core.services.databinding.emf.DomainModelReferenceSegmentConverterEMF;
29: import org.eclipse.emfforms.spi.core.services.databinding.emf.SegmentConverterListResultEMF;
30: import org.eclipse.emfforms.spi.core.services.databinding.emf.SegmentConverterValueResultEMF;
31: import org.eclipse.emfforms.spi.view.indexsegment.model.VIndexDomainModelReferenceSegment;
32: import org.osgi.service.component.annotations.Component;
33:
34: /**
35: * Converts {@link VIndexDomainModelReferenceSegment VIndexDomainModelReferenceSegments} to value and list properties,
36: * and to {@link Setting settings}.
37: *
38: * @author Lucas Koehler
39: *
40: */
41: @SuppressWarnings("restriction")
42: @Component(name = "IndexSegmentConverter")
43: public class IndexSegmentConverter implements DomainModelReferenceSegmentConverterEMF {
44:
45: @Override
46: public double isApplicable(VDomainModelReferenceSegment segment) {
47: Assert.create(segment).notNull();
48:• if (segment instanceof VIndexDomainModelReferenceSegment) {
49: return 10d;
50: }
51: return NOT_APPLICABLE;
52: }
53:
54: @Override
55: public SegmentConverterValueResultEMF convertToValueProperty(VDomainModelReferenceSegment segment,
56: EClass segmentRoot, EditingDomain editingDomain) throws DatabindingFailedException {
57: final VIndexDomainModelReferenceSegment indexSegment = checkAndConvertSegment(segment);
58:
59: final EStructuralFeature structuralFeature = segmentRoot
60: .getEStructuralFeature(indexSegment.getDomainModelFeature());
61:• if (structuralFeature == null) {
62: throw new DatabindingFailedException(String.format(
63: "The segment's feature could not be resolved for the given EClass. The segment was %1$s. The EClass was %2$s.", //$NON-NLS-1$
64: segment, segmentRoot));
65: }
66:
67: checkListType(structuralFeature);
68:
69: final EMFIndexedValueProperty indexProperty = new EMFIndexedValueProperty(editingDomain,
70: indexSegment.getIndex(), structuralFeature);
71: final IEMFValueProperty resultProperty = new EMFValuePropertyDecorator(indexProperty, structuralFeature);
72:• if (EReference.class.isInstance(structuralFeature)) {
73: return new SegmentConverterValueResultImpl(resultProperty,
74: ((EReference) structuralFeature).getEReferenceType());
75: }
76: return new SegmentConverterValueResultImpl(resultProperty, null);
77: }
78:
79: @Override
80: public SegmentConverterListResultEMF convertToListProperty(VDomainModelReferenceSegment segment, EClass segmentRoot,
81: EditingDomain editingDomain) throws DatabindingFailedException {
82: throw new UnsupportedOperationException(
83: "A VIndexDomainModelReferenceSegment cannot be converted to a list property, only to a value property."); //$NON-NLS-1$
84: }
85:
86: @Override
87: public Setting getSetting(VDomainModelReferenceSegment segment, EObject eObject) throws DatabindingFailedException {
88: final VIndexDomainModelReferenceSegment indexSegment = checkAndConvertSegment(segment);
89:
90: final EStructuralFeature structuralFeature = eObject.eClass()
91: .getEStructuralFeature(indexSegment.getDomainModelFeature());
92:• if (structuralFeature == null) {
93: throw new DatabindingFailedException(String.format(
94: "The given EOject does not contain the segment's feature. The segment was %1$s. The EObject was %2$s.", //$NON-NLS-1$
95: segment, eObject));
96: }
97:• if (structuralFeature.getEType() == null) {
98: throw new DatabindingFailedException(
99: String.format("The eType of the feature %1$s is null.", structuralFeature.getName())); //$NON-NLS-1$
100: }
101:
102: checkListType(structuralFeature);
103:
104: return new IndexedSetting(eObject, structuralFeature, indexSegment.getIndex());
105: }
106:
107: private VIndexDomainModelReferenceSegment checkAndConvertSegment(VDomainModelReferenceSegment segment)
108: throws DatabindingFailedException {
109: Assert.create(segment).notNull();
110: Assert.create(segment).ofClass(VIndexDomainModelReferenceSegment.class);
111:
112: final VIndexDomainModelReferenceSegment indexSegment = (VIndexDomainModelReferenceSegment) segment;
113:
114:• if (indexSegment.getDomainModelFeature() == null) {
115: throw new DatabindingFailedException("The segment's domain model feature must not be null."); //$NON-NLS-1$
116: }
117:• if (indexSegment.getDomainModelFeature().isEmpty()) {
118: throw new DatabindingFailedException("The segment's domain model feature must not be an empty string."); //$NON-NLS-1$
119: }
120:
121: return indexSegment;
122: }
123:
124: /**
125: * Checks whether the given structural feature references a proper list to generate a value or list property.
126: *
127: * @param structuralFeature The feature to check
128: * @throws IllegalListTypeException if the structural feature doesn't reference a proper list.
129: */
130: private void checkListType(EStructuralFeature structuralFeature) throws IllegalListTypeException {
131:• if (!structuralFeature.isMany()) {
132: throw new IllegalListTypeException(
133: "The VIndexDomainModelReferenceSegment's domainModelFeature must reference a list."); //$NON-NLS-1$
134: }
135: }
136: }