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Package: MappingSegmentIdeDescriptor
MappingSegmentIdeDescriptor
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| MappingSegmentIdeDescriptor() |
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| getEStructuralFeatureSelectionValidator() |
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| getMapKeyType(EClass) |
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| getMapType(EClass, String) |
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| getMapValueType(EClass) |
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| getReferenceTypeResolver() |
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| getSegmentType() |
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| isAllowedAsLastElementInPath() |
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| isAvailableInIde() |
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| isLastElementInPath() |
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| lambda$0(EStructuralFeature) |
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| lambda$1(EReference, VDomainModelReferenceSegment) |
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Coverage
1: /*******************************************************************************
2: * Copyright (c) 2011-2019 EclipseSource Muenchen GmbH and others.
3: *
4: * All rights reserved. This program and the accompanying materials
5: * are made available under the terms of the Eclipse Public License 2.0
6: * which accompanies this distribution, and is available at
7: * https://www.eclipse.org/legal/epl-2.0/
8: *
9: * SPDX-License-Identifier: EPL-2.0
10: *
11: * Contributors:
12: * Lucas Koehler - initial API and implementation
13: ******************************************************************************/
14: package org.eclipse.emfforms.internal.ide.view.mappingsegment;
15:
16: import java.text.MessageFormat;
17:
18: import org.eclipse.emf.ecore.EClass;
19: import org.eclipse.emf.ecore.EReference;
20: import org.eclipse.emf.ecore.EStructuralFeature;
21: import org.eclipse.emf.ecore.EcorePackage;
22: import org.eclipse.emf.ecp.view.spi.editor.controls.EStructuralFeatureSelectionValidator;
23: import org.eclipse.emf.ecp.view.spi.editor.controls.ReferenceTypeResolver;
24: import org.eclipse.emf.ecp.view.spi.editor.controls.SegmentIdeDescriptor;
25: import org.eclipse.emfforms.spi.view.mappingsegment.model.VMappingDomainModelReferenceSegment;
26: import org.eclipse.emfforms.spi.view.mappingsegment.model.VMappingsegmentPackage;
27: import org.osgi.service.component.annotations.Component;
28:
29: /**
30: * {@link SegmentIdeDescriptor} for
31: * {@link org.eclipse.emfforms.spi.view.mappingsegment.model.VMappingDomainModelReferenceSegment
32: * VMappingDomainModelReferenceSegments}.
33: *
34: * @author Lucas Koehler
35: *
36: */
37: @Component(name = "MappingSegmentIdeDescriptor")
38: public class MappingSegmentIdeDescriptor implements SegmentIdeDescriptor {
39:
40: /** Feature containing the key of the map. */
41: private static final String KEY = "key"; //$NON-NLS-1$
42: /** Feature containing the value of the map. */
43: private static final String VALUE = "value"; //$NON-NLS-1$
44: /** Name patter for EMap types. */
45: private static final String MAP_ENTRY_TYPE_REGEX = "EClassTo.+Map"; //$NON-NLS-1$
46: /** Instance class name of EMaps. */
47: private static final String JAVA_UTIL_MAP_ENTRY = "java.util.Map$Entry"; //$NON-NLS-1$
48:
49: @Override
50: public EClass getSegmentType() {
51: return VMappingsegmentPackage.Literals.MAPPING_DOMAIN_MODEL_REFERENCE_SEGMENT;
52: }
53:
54: @Override
55: public boolean isAvailableInIde() {
56: return true;
57: }
58:
59: @Override
60: public boolean isLastElementInPath() {
61: return false;
62: }
63:
64: @Override
65: public boolean isAllowedAsLastElementInPath() {
66: return false;
67: }
68:
69: @Override
70: public EStructuralFeatureSelectionValidator getEStructuralFeatureSelectionValidator() {
71: return structuralFeature -> {
72:• if (structuralFeature != null && EReference.class.isInstance(structuralFeature)
73:• && structuralFeature.isMany()) {
74: final EReference ref = (EReference) structuralFeature;
75: final EClass refType = ref.getEReferenceType();
76: final EClass keyEClass = getMapKeyType(refType);
77:• if (keyEClass != null && EcorePackage.eINSTANCE.getEClass().isSuperTypeOf(keyEClass)) {
78: final EClass valueEClass = getMapValueType(refType);
79:• if (valueEClass != null) {
80: return null;
81: }
82: }
83: }
84: return "A mapping segment requires a map which has EClass as its key type and an EReference for its values."; //$NON-NLS-1$
85: };
86: }
87:
88: @Override
89: public ReferenceTypeResolver getReferenceTypeResolver() {
90: return (reference, segment) -> {
91:• if (VMappingDomainModelReferenceSegment.class.isInstance(segment)) {
92: final VMappingDomainModelReferenceSegment mappingSegment = (VMappingDomainModelReferenceSegment) segment;
93:• if (mappingSegment.getMappedClass() != null) {
94: return mappingSegment.getMappedClass();
95: }
96: return getMapValueType(reference.getEReferenceType());
97: }
98: throw new IllegalArgumentException(
99: MessageFormat.format("The given segment '{0}' isn't a mapping segment", segment)); //$NON-NLS-1$
100: };
101: }
102:
103: /**
104: * @param mapType
105: * @return The type of the map's key, <code>null</code> if the type is not resolvable
106: */
107: private EClass getMapValueType(EClass mapType) {
108: return getMapType(mapType, VALUE);
109: }
110:
111: /**
112: * @param mapType
113: * @return The type of the map's value, <code>null</code> if the type is not resolvable
114: */
115: private EClass getMapKeyType(EClass mapType) {
116: return getMapType(mapType, KEY);
117: }
118:
119: private EClass getMapType(EClass mapType, String featureName) {
120:• if (JAVA_UTIL_MAP_ENTRY.equals(mapType.getInstanceClassName())
121:• && mapType.getName().matches(MAP_ENTRY_TYPE_REGEX)) {
122:
123: final EStructuralFeature feature = mapType.getEStructuralFeature(featureName);
124:• if (feature != null && EReference.class.isInstance(feature)) {
125: return ((EReference) feature).getEReferenceType();
126: }
127: }
128: return null;
129: }
130: }