2 * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.mdsal.binding.java.api.generator;
10 import static com.google.common.base.Preconditions.checkArgument;
11 import static org.opendaylight.mdsal.binding.spec.naming.BindingMapping.AUGMENTABLE_AUGMENTATION_NAME;
13 import com.google.common.annotations.VisibleForTesting;
14 import com.google.common.collect.ImmutableSortedSet;
15 import java.lang.reflect.Method;
16 import java.util.Collection;
17 import java.util.Collections;
18 import java.util.Comparator;
19 import java.util.LinkedHashSet;
20 import java.util.List;
22 import org.eclipse.xtext.xbase.lib.StringExtensions;
23 import org.opendaylight.mdsal.binding.model.api.CodeGenerator;
24 import org.opendaylight.mdsal.binding.model.api.DefaultType;
25 import org.opendaylight.mdsal.binding.model.api.GeneratedTransferObject;
26 import org.opendaylight.mdsal.binding.model.api.GeneratedType;
27 import org.opendaylight.mdsal.binding.model.api.JavaTypeName;
28 import org.opendaylight.mdsal.binding.model.api.MethodSignature;
29 import org.opendaylight.mdsal.binding.model.api.ParameterizedType;
30 import org.opendaylight.mdsal.binding.model.api.Type;
31 import org.opendaylight.mdsal.binding.model.api.type.builder.GeneratedTOBuilder;
32 import org.opendaylight.mdsal.binding.model.api.type.builder.GeneratedTypeBuilder;
33 import org.opendaylight.mdsal.binding.model.util.Types;
34 import org.opendaylight.mdsal.binding.model.util.generated.type.builder.CodegenGeneratedTypeBuilder;
35 import org.opendaylight.mdsal.binding.spec.naming.BindingMapping;
36 import org.opendaylight.yangtools.yang.binding.Augmentable;
37 import org.opendaylight.yangtools.yang.binding.Augmentation;
40 * Transformator of the data from the virtual form to JAVA programming language. The result source code represent java
41 * class. For generation of the source code is used the template written in XTEND language.
43 public final class BuilderGenerator implements CodeGenerator {
44 private static final JavaTypeName AUGMENTABLE = JavaTypeName.create(Augmentable.class);
45 private static final JavaTypeName AUGMENTATION = JavaTypeName.create(Augmentation.class);
47 private static final Comparator<MethodSignature> METHOD_COMPARATOR = new AlphabeticallyTypeMemberComparator<>();
48 private static final Type AUGMENTATION_RET_TYPE;
53 m = Augmentable.class.getDeclaredMethod(AUGMENTABLE_AUGMENTATION_NAME, Class.class);
54 } catch (NoSuchMethodException e) {
55 throw new ExceptionInInitializerError(e);
58 AUGMENTATION_RET_TYPE = DefaultType.of(JavaTypeName.create(m.getReturnType()));
62 * Passes via list of implemented types in <code>type</code>.
64 * @param type JAVA <code>Type</code>
65 * @return boolean value which is true if any of implemented types is of the type <code>Augmentable</code>.
68 public boolean isAcceptable(final Type type) {
69 if (type instanceof GeneratedType && !(type instanceof GeneratedTransferObject)) {
70 for (Type t : ((GeneratedType) type).getImplements()) {
71 // "rpc" and "grouping" elements do not implement Augmentable
72 final JavaTypeName name = t.getIdentifier();
73 if (name.equals(AUGMENTABLE) || name.equals(AUGMENTATION)) {
82 * Generates JAVA source code for generated type <code>Type</code>. The code is generated according to the template
83 * source code template which is written in XTEND language.
86 public String generate(final Type type) {
87 if (type instanceof GeneratedType && !(type instanceof GeneratedTransferObject)) {
88 return templateForType((GeneratedType) type).generate();
94 public String getUnitName(final Type type) {
95 return type.getName() + BuilderTemplate.BUILDER_STR;
99 static BuilderTemplate templateForType(final GeneratedType type) {
100 final GeneratedType genType = type;
101 final JavaTypeName origName = genType.getIdentifier();
103 final Set<MethodSignature> methods = new LinkedHashSet<>();
104 final Type augmentType = createMethods(genType, methods);
105 final Set<MethodSignature> sortedMethods = ImmutableSortedSet.orderedBy(METHOD_COMPARATOR)
106 .addAll(methods).build();
108 final GeneratedTypeBuilder builderTypeBuilder = new CodegenGeneratedTypeBuilder(
109 origName.createSibling(origName.simpleName() + BuilderTemplate.BUILDER_STR));
111 final GeneratedTOBuilder implTypeBuilder = builderTypeBuilder.addEnclosingTransferObject(
112 origName.simpleName() + "Impl");
113 implTypeBuilder.addImplementsType(genType);
115 return new BuilderTemplate(builderTypeBuilder.build(), genType, propertiesFromMethods(sortedMethods),
116 augmentType, getKey(genType));
119 private static Type getKey(final GeneratedType type) {
120 for (MethodSignature m : type.getMethodDefinitions()) {
121 if (BindingMapping.IDENTIFIABLE_KEY_NAME.equals(m.getName())) {
122 return m.getReturnType();
129 * Returns set of method signature instances which contains all the methods of the <code>genType</code>
130 * and all the methods of the implemented interfaces.
132 * @returns set of method signature instances
134 private static ParameterizedType createMethods(final GeneratedType type, final Set<MethodSignature> methods) {
135 methods.addAll(type.getMethodDefinitions());
136 return collectImplementedMethods(type, methods, type.getImplements());
140 * Adds to the <code>methods</code> set all the methods of the <code>implementedIfcs</code>
141 * and recursively their implemented interfaces.
143 * @param methods set of method signatures
144 * @param implementedIfcs list of implemented interfaces
146 private static ParameterizedType collectImplementedMethods(final GeneratedType type,
147 final Set<MethodSignature> methods, final List<Type> implementedIfcs) {
148 if (implementedIfcs == null || implementedIfcs.isEmpty()) {
152 ParameterizedType augmentType = null;
153 for (Type implementedIfc : implementedIfcs) {
154 if (implementedIfc instanceof GeneratedType && !(implementedIfc instanceof GeneratedTransferObject)) {
155 final GeneratedType ifc = (GeneratedType) implementedIfc;
156 methods.addAll(ifc.getMethodDefinitions());
158 final ParameterizedType t = collectImplementedMethods(type, methods, ifc.getImplements());
159 if (t != null && augmentType == null) {
162 } else if (Augmentable.class.getName().equals(implementedIfc.getFullyQualifiedName())) {
163 augmentType = Types.parameterizedTypeFor(AUGMENTATION_RET_TYPE, DefaultType.of(type.getIdentifier()));
171 * Creates set of generated property instances from getter <code>methods</code>.
173 * @param set of method signature instances which should be transformed to list of properties
174 * @return set of generated property instances which represents the getter <code>methods</code>
176 private static Set<BuilderGeneratedProperty> propertiesFromMethods(final Collection<MethodSignature> methods) {
177 if (methods == null || methods.isEmpty()) {
178 return Collections.emptySet();
180 final Set<BuilderGeneratedProperty> result = new LinkedHashSet<>();
181 for (MethodSignature m : methods) {
182 final BuilderGeneratedProperty createdField = propertyFromGetter(m);
183 if (createdField != null) {
184 result.add(createdField);
191 * Creates generated property instance from the getter <code>method</code> name and return type.
193 * @param method method signature from which is the method name and return type obtained
194 * @return generated property instance for the getter <code>method</code>
195 * @throws IllegalArgumentException <ul>
196 * <li>if the <code>method</code> equals <code>null</code></li>
197 * <li>if the name of the <code>method</code> equals <code>null</code></li>
198 * <li>if the name of the <code>method</code> is empty</li>
199 * <li>if the return type of the <code>method</code> equals <code>null</code></li>
202 private static BuilderGeneratedProperty propertyFromGetter(final MethodSignature method) {
203 checkArgument(method != null);
204 checkArgument(method.getReturnType() != null);
205 checkArgument(method.getName() != null);
206 checkArgument(!method.getName().isEmpty());
207 if (method.isDefault()) {
211 final String prefix = BindingMapping.getGetterPrefix(Types.BOOLEAN.equals(method.getReturnType()));
212 if (!method.getName().startsWith(prefix)) {
216 return new BuilderGeneratedProperty(StringExtensions.toFirstLower(method.getName().substring(prefix.length())),