1 package org.opendaylight.yangtools.sal.binding.generator.util;
3 import com.google.common.base.Optional;
4 import com.google.common.base.Preconditions;
5 import com.google.common.collect.BiMap;
6 import com.google.common.collect.FluentIterable;
7 import com.google.common.collect.HashBiMap;
8 import com.google.common.collect.HashMultimap;
9 import com.google.common.collect.ImmutableMap;
10 import com.google.common.collect.Multimap;
11 import java.util.AbstractMap;
12 import java.util.AbstractMap.SimpleEntry;
13 import java.util.Collection;
14 import java.util.HashMap;
15 import java.util.HashSet;
17 import java.util.Map.Entry;
19 import org.opendaylight.yangtools.binding.generator.util.ReferencedTypeImpl;
20 import org.opendaylight.yangtools.concepts.Immutable;
21 import org.opendaylight.yangtools.sal.binding.generator.api.ClassLoadingStrategy;
22 import org.opendaylight.yangtools.sal.binding.generator.impl.BindingGeneratorImpl;
23 import org.opendaylight.yangtools.sal.binding.generator.impl.BindingSchemaContextUtils;
24 import org.opendaylight.yangtools.sal.binding.generator.impl.ModuleContext;
25 import org.opendaylight.yangtools.sal.binding.model.api.GeneratedType;
26 import org.opendaylight.yangtools.sal.binding.model.api.MethodSignature;
27 import org.opendaylight.yangtools.sal.binding.model.api.ParameterizedType;
28 import org.opendaylight.yangtools.sal.binding.model.api.Type;
29 import org.opendaylight.yangtools.sal.binding.model.api.type.builder.GeneratedTypeBuilder;
30 import org.opendaylight.yangtools.yang.binding.Augmentation;
31 import org.opendaylight.yangtools.yang.common.QName;
32 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.AugmentationIdentifier;
33 import org.opendaylight.yangtools.yang.data.impl.schema.transform.base.AugmentationSchemaProxy;
34 import org.opendaylight.yangtools.yang.model.api.AugmentationSchema;
35 import org.opendaylight.yangtools.yang.model.api.ChoiceCaseNode;
36 import org.opendaylight.yangtools.yang.model.api.ChoiceNode;
37 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
38 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
39 import org.opendaylight.yangtools.yang.model.api.Module;
40 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
41 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
42 import org.opendaylight.yangtools.yang.model.util.SchemaNodeUtils;
45 * Runtime Context for Java YANG Binding classes
48 * Runtime Context provides additional insight in Java YANG Binding,
49 * binding classes and underlying YANG schema, it contains
50 * runtime information, which could not be derived from generated
51 * classes alone using {@link org.opendaylight.yangtools.yang.binding.util.BindingReflections}.
53 * Some of this information are for example list of all available
54 * children for cases {@link #getChoiceCaseChildren(DataNodeContainer)}, since
55 * choices are augmentable and new choices may be introduced by additional models.
57 * Same goes for all possible augmentations.
60 public class BindingRuntimeContext implements Immutable {
62 private final ClassLoadingStrategy strategy;
63 private final SchemaContext schemaContext;
65 private final Map<Type, AugmentationSchema> augmentationToSchema = new HashMap<>();
66 private final BiMap<Type, Object> typeToDefiningSchema = HashBiMap.create();
67 private final Multimap<Type, Type> augmentableToAugmentations = HashMultimap.create();
68 private final Multimap<Type, Type> choiceToCases = HashMultimap.create();
70 private BindingRuntimeContext(final ClassLoadingStrategy strategy, final SchemaContext schema) {
71 this.strategy = strategy;
72 this.schemaContext = schema;
74 BindingGeneratorImpl generator = new BindingGeneratorImpl();
75 generator.generateTypes(schema);
76 Map<Module, ModuleContext> modules = generator.getModuleContexts();
78 for (Entry<Module, ModuleContext> entry : modules.entrySet()) {
79 ModuleContext ctx = entry.getValue();
80 augmentationToSchema.putAll(ctx.getTypeToAugmentation());
81 typeToDefiningSchema.putAll(ctx.getTypeToSchema());
82 augmentableToAugmentations.putAll(ctx.getAugmentableToAugmentations());
83 choiceToCases.putAll(ctx.getChoiceToCases());
89 * Creates Binding Runtime Context from supplied class loading strategy and schema context.
91 * @param strategy Class loading strategy to retrieve generated Binding classes
92 * @param ctx Schema Context which describes YANG model and to which Binding classes should be mapped
93 * @return Instance of BindingRuntimeContext for supplied schema context.
95 public static final BindingRuntimeContext create(final ClassLoadingStrategy strategy, final SchemaContext ctx) {
97 return new BindingRuntimeContext(strategy, ctx);
101 * Returns a class loading strategy associated with this binding runtime context
102 * which is used to load classes.
104 * @return Class loading strategy.
106 public ClassLoadingStrategy getStrategy() {
111 * Returns an stable immutable view of schema context associated with this Binding runtime context.
113 * @return stable view of schema context
115 public SchemaContext getSchemaContext() {
116 return schemaContext;
120 * Returns schema of augmentation
122 * Returned schema is schema definition from which augmentation class was generated.
123 * This schema is isolated from other augmentations. This means it contains
124 * augmentation definition as was present in original YANG module.
126 * Children of returned schema does not contain any additional augmentations,
127 * which may be present in runtime for them, thus returned schema is unsuitable
128 * for use for validation of data.
130 * For retrieving {@link AugmentationSchema}, which will contains
131 * full model for child nodes, you should use method {@link #getResolvedAugmentationSchema(DataNodeContainer, Class)}
132 * which will return augmentation schema derived from supplied augmentation target
135 * @param augClass Augmentation class
136 * @return Schema of augmentation
137 * @throws IllegalArgumentException If supplied class is not an augmentation or current context does not contain schema for augmenation.
139 public AugmentationSchema getAugmentationDefinition(final Class<?> augClass) throws IllegalArgumentException {
140 Preconditions.checkArgument(Augmentation.class.isAssignableFrom(augClass),"Class {} does not represent augmentation",augClass);
141 final AugmentationSchema ret = augmentationToSchema.get(referencedType(augClass));
142 Preconditions.checkArgument(ret != null, "Supplied augmentation {} is not valid in current context",augClass);
147 * Returns defining {@link DataSchemaNode} for supplied class.
150 * Returned schema is schema definition from which class was generated.
151 * This schema may be isolated from augmentations, if supplied class
152 * represent node, which was child of grouping or augmentation.
154 * For getting augmentation schema from augmentation class use
155 * {@link #getAugmentationDefinition(Class)} instead.
157 * @param cls Class which represents list, container, choice or case.
158 * @return Schema node, from which class was generated.
160 public DataSchemaNode getSchemaDefinition(final Class<?> cls) {
161 Preconditions.checkArgument(Augmentation.class.isAssignableFrom(cls));
162 return (DataSchemaNode) typeToDefiningSchema.get(referencedType(cls));
165 public Entry<AugmentationIdentifier, AugmentationSchema> getResolvedAugmentationSchema(final DataNodeContainer target,
166 final Class<? extends Augmentation<?>> aug) {
167 AugmentationSchema origSchema = getAugmentationDefinition(aug);
169 * FIXME: Validate augmentation schema lookup
171 * Currently this algorithm, does not verify if instantiated child nodes
172 * are real one derived from augmentation schema. The problem with
173 * full validation is, if user used copy builders, he may use
174 * augmentation which was generated for different place.
176 * If this augmentations have same definition, we emit same identifier
177 * with data and it is up to underlying user to validate data.
180 Set<QName> childNames = new HashSet<>();
181 Set<DataSchemaNode> realChilds = new HashSet<>();
182 for (DataSchemaNode child : origSchema.getChildNodes()) {
183 realChilds.add(target.getDataChildByName(child.getQName()));
184 childNames.add(child.getQName());
187 AugmentationIdentifier identifier = new AugmentationIdentifier(childNames);
188 AugmentationSchema proxy = new AugmentationSchemaProxy(origSchema, realChilds);
189 return new AbstractMap.SimpleEntry<>(identifier, proxy);
194 * Returns resolved case schema for supplied class
196 * @param schema Resolved parent choice schema
197 * @param childClass Class representing case.
198 * @return Resolved case schema.
199 * @throws IllegalArgumentException If supplied class does not represent case or supplied case class is not
200 * valid in the context of parent choice schema.
202 public ChoiceCaseNode getCaseSchemaDefinition(final ChoiceNode schema, final Class<?> childClass) throws IllegalArgumentException {
203 DataSchemaNode origSchema = getSchemaDefinition(childClass);
204 Preconditions.checkArgument(origSchema instanceof ChoiceCaseNode, "Supplied {} is not case.");
205 /* FIXME: Make sure that if there are multiple augmentations of same
206 * named case, with same structure we treat it as equals
207 * this is due property of Binding specification and copy builders
208 * that user may be unaware that he is using incorrect case
209 * which was generated for choice inside grouping.
211 Optional<ChoiceCaseNode> found = BindingSchemaContextUtils.findInstantiatedCase(schema,
212 (ChoiceCaseNode) origSchema);
213 Preconditions.checkArgument(found.isPresent(), "Supplied {} is not valid case in schema", schema);
217 private static Type referencedType(final Class<?> type) {
218 return new ReferencedTypeImpl(type.getPackage().getName(), type.getSimpleName());
221 public Entry<GeneratedType, Object> getTypeWithSchema(final Class<?> type) {
222 Object schema = typeToDefiningSchema.get(referencedType(type));
223 Type definedType = typeToDefiningSchema.inverse().get(schema);
224 Preconditions.checkNotNull(schema);
225 Preconditions.checkNotNull(definedType);
227 return new SimpleEntry<>(((GeneratedTypeBuilder) definedType).toInstance(), schema);
230 public ImmutableMap<Type, Entry<Type, Type>> getChoiceCaseChildren(final DataNodeContainer schema) {
231 Map<Type,Entry<Type,Type>> childToCase = new HashMap<>();;
232 for(ChoiceNode choice : FluentIterable.from(schema.getChildNodes()).filter(ChoiceNode.class)) {
233 ChoiceNode originalChoice = getOriginalSchema(choice);
234 Type choiceType = referencedType(typeToDefiningSchema.inverse().get(originalChoice));
235 Collection<Type> cases = choiceToCases.get(choiceType);
237 for(Type caze : cases) {
238 Entry<Type,Type> caseIdentifier = new SimpleEntry<>(choiceType,caze);
239 HashSet<Type> caseChildren = new HashSet<>();
240 if(caze instanceof GeneratedTypeBuilder) {
241 caze = ((GeneratedTypeBuilder) caze).toInstance();
243 collectAllContainerTypes((GeneratedType) caze, caseChildren);
244 for(Type caseChild : caseChildren) {
245 childToCase.put(caseChild, caseIdentifier);
249 return ImmutableMap.copyOf(childToCase);
253 private static Type referencedType(final Type type) {
254 if(type instanceof ReferencedTypeImpl) {
257 return new ReferencedTypeImpl(type.getPackageName(), type.getName());
260 private static Set<Type> collectAllContainerTypes(final GeneratedType type, final Set<Type> collection) {
261 for (MethodSignature definition : type.getMethodDefinitions()) {
262 Type childType = definition.getReturnType();
263 if(childType instanceof ParameterizedType) {
264 childType = ((ParameterizedType) childType).getActualTypeArguments()[0];
266 if(childType instanceof GeneratedType || childType instanceof GeneratedTypeBuilder) {
267 collection.add(referencedType(childType));
270 for (Type parent : type.getImplements()) {
271 if (parent instanceof GeneratedType) {
272 collectAllContainerTypes((GeneratedType) parent, collection);
278 private static final <T extends SchemaNode> T getOriginalSchema(final T choice) {
279 @SuppressWarnings("unchecked")
280 T original = (T) SchemaNodeUtils.getRootOriginalIfPossible(choice);
281 if(original != null) {