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;
12 import java.util.AbstractMap;
13 import java.util.AbstractMap.SimpleEntry;
14 import java.util.Collection;
15 import java.util.HashMap;
16 import java.util.HashSet;
18 import java.util.Map.Entry;
21 import org.opendaylight.yangtools.binding.generator.util.ReferencedTypeImpl;
22 import org.opendaylight.yangtools.concepts.Immutable;
23 import org.opendaylight.yangtools.sal.binding.generator.api.ClassLoadingStrategy;
24 import org.opendaylight.yangtools.sal.binding.generator.impl.BindingGeneratorImpl;
25 import org.opendaylight.yangtools.sal.binding.generator.impl.BindingSchemaContextUtils;
26 import org.opendaylight.yangtools.sal.binding.generator.impl.ModuleContext;
27 import org.opendaylight.yangtools.sal.binding.model.api.GeneratedType;
28 import org.opendaylight.yangtools.sal.binding.model.api.MethodSignature;
29 import org.opendaylight.yangtools.sal.binding.model.api.ParameterizedType;
30 import org.opendaylight.yangtools.sal.binding.model.api.Type;
31 import org.opendaylight.yangtools.sal.binding.model.api.type.builder.GeneratedTypeBuilder;
32 import org.opendaylight.yangtools.yang.binding.Augmentation;
33 import org.opendaylight.yangtools.yang.common.QName;
34 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.AugmentationIdentifier;
35 import org.opendaylight.yangtools.yang.data.impl.schema.transform.base.AugmentationSchemaProxy;
36 import org.opendaylight.yangtools.yang.model.api.AugmentationSchema;
37 import org.opendaylight.yangtools.yang.model.api.AugmentationTarget;
38 import org.opendaylight.yangtools.yang.model.api.ChoiceCaseNode;
39 import org.opendaylight.yangtools.yang.model.api.ChoiceNode;
40 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
41 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
42 import org.opendaylight.yangtools.yang.model.api.Module;
43 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
44 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
45 import org.opendaylight.yangtools.yang.model.util.SchemaNodeUtils;
48 * Runtime Context for Java YANG Binding classes
51 * Runtime Context provides additional insight in Java YANG Binding,
52 * binding classes and underlying YANG schema, it contains
53 * runtime information, which could not be derived from generated
54 * classes alone using {@link org.opendaylight.yangtools.yang.binding.util.BindingReflections}.
56 * Some of this information are for example list of all available
57 * children for cases {@link #getChoiceCaseChildren(DataNodeContainer)}, since
58 * choices are augmentable and new choices may be introduced by additional models.
60 * Same goes for all possible augmentations.
63 public class BindingRuntimeContext implements Immutable {
65 private final ClassLoadingStrategy strategy;
66 private final SchemaContext schemaContext;
68 private final Map<Type, AugmentationSchema> augmentationToSchema = new HashMap<>();
69 private final BiMap<Type, Object> typeToDefiningSchema = HashBiMap.create();
70 private final Multimap<Type, Type> augmentableToAugmentations = HashMultimap.create();
71 private final Multimap<Type, Type> choiceToCases = HashMultimap.create();
72 private final Map<QName, Type> identities = new HashMap<>();
74 private BindingRuntimeContext(final ClassLoadingStrategy strategy, final SchemaContext schema) {
75 this.strategy = strategy;
76 this.schemaContext = schema;
78 BindingGeneratorImpl generator = new BindingGeneratorImpl();
79 generator.generateTypes(schema);
80 Map<Module, ModuleContext> modules = generator.getModuleContexts();
82 for (ModuleContext ctx : modules.values()) {
83 augmentationToSchema.putAll(ctx.getTypeToAugmentation());
84 typeToDefiningSchema.putAll(ctx.getTypeToSchema());
85 augmentableToAugmentations.putAll(ctx.getAugmentableToAugmentations());
86 choiceToCases.putAll(ctx.getChoiceToCases());
87 identities.putAll(ctx.getIdentities());
93 * Creates Binding Runtime Context from supplied class loading strategy and schema context.
95 * @param strategy Class loading strategy to retrieve generated Binding classes
96 * @param ctx Schema Context which describes YANG model and to which Binding classes should be mapped
97 * @return Instance of BindingRuntimeContext for supplied schema context.
99 public static final BindingRuntimeContext create(final ClassLoadingStrategy strategy, final SchemaContext ctx) {
101 return new BindingRuntimeContext(strategy, ctx);
105 * Returns a class loading strategy associated with this binding runtime context
106 * which is used to load classes.
108 * @return Class loading strategy.
110 public ClassLoadingStrategy getStrategy() {
115 * Returns an stable immutable view of schema context associated with this Binding runtime context.
117 * @return stable view of schema context
119 public SchemaContext getSchemaContext() {
120 return schemaContext;
124 * Returns schema of augmentation
126 * Returned schema is schema definition from which augmentation class was generated.
127 * This schema is isolated from other augmentations. This means it contains
128 * augmentation definition as was present in original YANG module.
130 * Children of returned schema does not contain any additional augmentations,
131 * which may be present in runtime for them, thus returned schema is unsuitable
132 * for use for validation of data.
134 * For retrieving {@link AugmentationSchema}, which will contains
135 * full model for child nodes, you should use method {@link #getResolvedAugmentationSchema(DataNodeContainer, Class)}
136 * which will return augmentation schema derived from supplied augmentation target
139 * @param augClass Augmentation class
140 * @return Schema of augmentation
141 * @throws IllegalArgumentException If supplied class is not an augmentation or current context does not contain schema for augmentation.
143 public AugmentationSchema getAugmentationDefinition(final Class<?> augClass) throws IllegalArgumentException {
144 Preconditions.checkArgument(Augmentation.class.isAssignableFrom(augClass), "Class {} does not represent augmentation", augClass);
145 final AugmentationSchema ret = augmentationToSchema.get(referencedType(augClass));
146 Preconditions.checkArgument(ret != null, "Supplied augmentation {} is not valid in current context", augClass);
151 * Returns defining {@link DataSchemaNode} for supplied class.
154 * Returned schema is schema definition from which class was generated.
155 * This schema may be isolated from augmentations, if supplied class
156 * represent node, which was child of grouping or augmentation.
158 * For getting augmentation schema from augmentation class use
159 * {@link #getAugmentationDefinition(Class)} instead.
161 * @param cls Class which represents list, container, choice or case.
162 * @return Schema node, from which class was generated.
164 public DataSchemaNode getSchemaDefinition(final Class<?> cls) {
165 Preconditions.checkArgument(!Augmentation.class.isAssignableFrom(cls),"Supplied class must not be augmentation");
166 return (DataSchemaNode) typeToDefiningSchema.get(referencedType(cls));
169 public Entry<AugmentationIdentifier, AugmentationSchema> getResolvedAugmentationSchema(final DataNodeContainer target,
170 final Class<? extends Augmentation<?>> aug) {
171 AugmentationSchema origSchema = getAugmentationDefinition(aug);
173 * FIXME: Validate augmentation schema lookup
175 * Currently this algorithm, does not verify if instantiated child nodes
176 * are real one derived from augmentation schema. The problem with
177 * full validation is, if user used copy builders, he may use
178 * augmentation which was generated for different place.
180 * If this augmentations have same definition, we emit same identifier
181 * with data and it is up to underlying user to validate data.
184 Set<QName> childNames = new HashSet<>();
185 Set<DataSchemaNode> realChilds = new HashSet<>();
186 for (DataSchemaNode child : origSchema.getChildNodes()) {
187 realChilds.add(target.getDataChildByName(child.getQName()));
188 childNames.add(child.getQName());
191 AugmentationIdentifier identifier = new AugmentationIdentifier(childNames);
192 AugmentationSchema proxy = new AugmentationSchemaProxy(origSchema, realChilds);
193 return new AbstractMap.SimpleEntry<>(identifier, proxy);
198 * Returns resolved case schema for supplied class
200 * @param schema Resolved parent choice schema
201 * @param childClass Class representing case.
202 * @return Resolved case schema.
203 * @throws IllegalArgumentException If supplied class does not represent case or supplied case class is not
204 * valid in the context of parent choice schema.
206 public ChoiceCaseNode getCaseSchemaDefinition(final ChoiceNode schema, final Class<?> childClass) throws IllegalArgumentException {
207 DataSchemaNode origSchema = getSchemaDefinition(childClass);
208 Preconditions.checkArgument(origSchema instanceof ChoiceCaseNode, "Supplied {} is not case.");
209 /* FIXME: Make sure that if there are multiple augmentations of same
210 * named case, with same structure we treat it as equals
211 * this is due property of Binding specification and copy builders
212 * that user may be unaware that he is using incorrect case
213 * which was generated for choice inside grouping.
215 Optional<ChoiceCaseNode> found = BindingSchemaContextUtils.findInstantiatedCase(schema,
216 (ChoiceCaseNode) origSchema);
217 Preconditions.checkArgument(found.isPresent(), "Supplied {} is not valid case in schema", schema);
221 private static Type referencedType(final Class<?> type) {
222 return new ReferencedTypeImpl(type.getPackage().getName(), type.getSimpleName());
225 public Entry<GeneratedType, Object> getTypeWithSchema(final Class<?> type) {
226 Object schema = typeToDefiningSchema.get(referencedType(type));
227 Type definedType = typeToDefiningSchema.inverse().get(schema);
228 Preconditions.checkNotNull(schema);
229 Preconditions.checkNotNull(definedType);
231 return new SimpleEntry<>(((GeneratedTypeBuilder) definedType).toInstance(), schema);
234 public ImmutableMap<Type, Entry<Type, Type>> getChoiceCaseChildren(final DataNodeContainer schema) {
235 Map<Type,Entry<Type,Type>> childToCase = new HashMap<>();;
236 for (ChoiceNode choice : FluentIterable.from(schema.getChildNodes()).filter(ChoiceNode.class)) {
237 ChoiceNode originalChoice = getOriginalSchema(choice);
238 Type choiceType = referencedType(typeToDefiningSchema.inverse().get(originalChoice));
239 Collection<Type> cases = choiceToCases.get(choiceType);
241 for (Type caze : cases) {
242 Entry<Type,Type> caseIdentifier = new SimpleEntry<>(choiceType,caze);
243 HashSet<Type> caseChildren = new HashSet<>();
244 if (caze instanceof GeneratedTypeBuilder) {
245 caze = ((GeneratedTypeBuilder) caze).toInstance();
247 collectAllContainerTypes((GeneratedType) caze, caseChildren);
248 for (Type caseChild : caseChildren) {
249 childToCase.put(caseChild, caseIdentifier);
253 return ImmutableMap.copyOf(childToCase);
256 public Class<?> getClassForSchema(final DataSchemaNode childSchema) {
257 DataSchemaNode origSchema = getOriginalSchema(childSchema);
258 Type clazzType = typeToDefiningSchema.inverse().get(origSchema);
260 return strategy.loadClass(clazzType);
261 } catch (ClassNotFoundException e) {
262 throw new IllegalStateException(e);
266 public ImmutableMap<AugmentationIdentifier,Type> getAvailableAugmentationTypes(final DataNodeContainer container) {
267 Map<AugmentationIdentifier,Type> identifierToType = new HashMap<>();
268 if (container instanceof AugmentationTarget) {
269 Set<AugmentationSchema> augments = ((AugmentationTarget) container).getAvailableAugmentations();
270 for (AugmentationSchema augment : augments) {
271 // Augmentation must have child nodes if is to be used with Binding classes
272 if (!augment.getChildNodes().isEmpty()) {
273 Type augType = typeToDefiningSchema.inverse().get(augment);
274 if (augType != null) {
275 identifierToType.put(getAugmentationIdentifier(augment),augType);
280 return ImmutableMap.copyOf(identifierToType);
284 private AugmentationIdentifier getAugmentationIdentifier(final AugmentationSchema augment) {
285 Set<QName> childNames = new HashSet<>();
286 for (DataSchemaNode child : augment.getChildNodes()) {
287 childNames.add(child.getQName());
289 return new AugmentationIdentifier(childNames);
292 private static Type referencedType(final Type type) {
293 if(type instanceof ReferencedTypeImpl) {
296 return new ReferencedTypeImpl(type.getPackageName(), type.getName());
299 private static Set<Type> collectAllContainerTypes(final GeneratedType type, final Set<Type> collection) {
300 for (MethodSignature definition : type.getMethodDefinitions()) {
301 Type childType = definition.getReturnType();
302 if(childType instanceof ParameterizedType) {
303 childType = ((ParameterizedType) childType).getActualTypeArguments()[0];
305 if(childType instanceof GeneratedType || childType instanceof GeneratedTypeBuilder) {
306 collection.add(referencedType(childType));
309 for (Type parent : type.getImplements()) {
310 if (parent instanceof GeneratedType) {
311 collectAllContainerTypes((GeneratedType) parent, collection);
317 private static final <T extends SchemaNode> T getOriginalSchema(final T choice) {
318 @SuppressWarnings("unchecked")
319 T original = (T) SchemaNodeUtils.getRootOriginalIfPossible(choice);
320 if (original != null) {
326 public Class<?> getIdentityClass(final QName input) {
327 Type identityType = identities.get(input);
328 Preconditions.checkArgument(identityType != null, "Supplied QName is not valid identity");
330 return strategy.loadClass(identityType);
331 } catch (ClassNotFoundException e) {
332 throw new IllegalArgumentException("Required class " + identityType + "was not found.",e);