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.netconf.sal.rest.doc.impl;
10 import static org.opendaylight.netconf.sal.rest.doc.util.RestDocgenUtil.resolveNodesName;
12 import com.fasterxml.jackson.databind.JsonNode;
13 import com.fasterxml.jackson.databind.node.ArrayNode;
14 import com.fasterxml.jackson.databind.node.JsonNodeFactory;
15 import com.fasterxml.jackson.databind.node.ObjectNode;
16 import com.fasterxml.jackson.databind.node.TextNode;
17 import com.google.common.collect.Range;
18 import com.google.common.collect.RangeSet;
19 import com.mifmif.common.regex.Generex;
20 import java.io.IOException;
21 import java.util.List;
22 import java.util.Optional;
24 import java.util.regex.Pattern;
25 import javax.annotation.concurrent.NotThreadSafe;
26 import org.opendaylight.netconf.sal.rest.doc.model.builder.OperationBuilder;
27 import org.opendaylight.netconf.sal.rest.doc.model.builder.OperationBuilder.Post;
28 import org.opendaylight.yangtools.yang.common.QName;
29 import org.opendaylight.yangtools.yang.model.api.AnyDataSchemaNode;
30 import org.opendaylight.yangtools.yang.model.api.AnyXmlSchemaNode;
31 import org.opendaylight.yangtools.yang.model.api.ChoiceSchemaNode;
32 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
33 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
34 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
35 import org.opendaylight.yangtools.yang.model.api.ElementCountConstraint;
36 import org.opendaylight.yangtools.yang.model.api.IdentitySchemaNode;
37 import org.opendaylight.yangtools.yang.model.api.LeafListSchemaNode;
38 import org.opendaylight.yangtools.yang.model.api.LeafSchemaNode;
39 import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
40 import org.opendaylight.yangtools.yang.model.api.MandatoryAware;
41 import org.opendaylight.yangtools.yang.model.api.Module;
42 import org.opendaylight.yangtools.yang.model.api.RevisionAwareXPath;
43 import org.opendaylight.yangtools.yang.model.api.RpcDefinition;
44 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
45 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
46 import org.opendaylight.yangtools.yang.model.api.TypeDefinition;
47 import org.opendaylight.yangtools.yang.model.api.TypedDataSchemaNode;
48 import org.opendaylight.yangtools.yang.model.api.type.BinaryTypeDefinition;
49 import org.opendaylight.yangtools.yang.model.api.type.BitsTypeDefinition;
50 import org.opendaylight.yangtools.yang.model.api.type.BitsTypeDefinition.Bit;
51 import org.opendaylight.yangtools.yang.model.api.type.BooleanTypeDefinition;
52 import org.opendaylight.yangtools.yang.model.api.type.EmptyTypeDefinition;
53 import org.opendaylight.yangtools.yang.model.api.type.EnumTypeDefinition;
54 import org.opendaylight.yangtools.yang.model.api.type.EnumTypeDefinition.EnumPair;
55 import org.opendaylight.yangtools.yang.model.api.type.IdentityrefTypeDefinition;
56 import org.opendaylight.yangtools.yang.model.api.type.LeafrefTypeDefinition;
57 import org.opendaylight.yangtools.yang.model.api.type.LengthConstraint;
58 import org.opendaylight.yangtools.yang.model.api.type.PatternConstraint;
59 import org.opendaylight.yangtools.yang.model.api.type.RangeConstraint;
60 import org.opendaylight.yangtools.yang.model.api.type.RangeRestrictedTypeDefinition;
61 import org.opendaylight.yangtools.yang.model.api.type.StringTypeDefinition;
62 import org.opendaylight.yangtools.yang.model.api.type.UnionTypeDefinition;
63 import org.opendaylight.yangtools.yang.model.util.RevisionAwareXPathImpl;
64 import org.opendaylight.yangtools.yang.model.util.SchemaContextUtil;
65 import org.slf4j.Logger;
66 import org.slf4j.LoggerFactory;
69 * Generates JSON Schema for data defined in YANG.
72 public class ModelGenerator {
74 private static final Logger LOG = LoggerFactory.getLogger(ModelGenerator.class);
76 private static final Pattern STRIP_PATTERN = Pattern.compile("\\[[^\\[\\]]*\\]");
77 private static final String BASE_64 = "base64";
78 private static final String BINARY_ENCODING_KEY = "binaryEncoding";
79 private static final String MEDIA_KEY = "media";
80 private static final String UNIQUE_ITEMS_KEY = "uniqueItems";
81 private static final String MAX_ITEMS = "maxItems";
82 private static final String MIN_ITEMS = "minItems";
83 private static final String SCHEMA_URL = "http://json-schema.org/draft-04/schema";
84 private static final String SCHEMA_KEY = "$schema";
85 private static final String MAX_LENGTH_KEY = "maxLength";
86 private static final String MIN_LENGTH_KEY = "minLength";
87 private static final String REQUIRED_KEY = "required";
88 private static final String REF_KEY = "$ref";
89 private static final String ITEMS_KEY = "items";
90 private static final String TYPE_KEY = "type";
91 private static final String PROPERTIES_KEY = "properties";
92 private static final String DESCRIPTION_KEY = "description";
93 private static final String OBJECT_TYPE = "object";
94 private static final String ARRAY_TYPE = "array";
95 private static final String ENUM = "enum";
96 private static final String ID_KEY = "id";
97 private static final String SUB_TYPES_KEY = "subTypes";
98 private static final String UNIQUE_EMPTY_IDENTIFIER = "unique_empty_identifier";
100 private Module topLevelModule;
102 public ModelGenerator() {
106 * Creates Json models from provided module according to swagger spec.
108 * @param module - Yang module to be converted
109 * @param schemaContext - SchemaContext of all Yang files used by Api Doc
110 * @return ObjectNode containing data used for creating examples and models in Api Doc
111 * @throws IOException if I/O operation fails
113 public ObjectNode convertToJsonSchema(final Module module,
114 final SchemaContext schemaContext) throws IOException {
115 final ObjectNode models = JsonNodeFactory.instance.objectNode();
116 final ObjectNode emptyIdentifier = JsonNodeFactory.instance.objectNode();
117 models.set(UNIQUE_EMPTY_IDENTIFIER, emptyIdentifier);
118 topLevelModule = module;
119 processModules(module, models, schemaContext);
120 processContainersAndLists(module, models, schemaContext);
121 processRPCs(module, models, schemaContext);
122 processIdentities(module, models);
126 private void processModules(final Module module, final ObjectNode models,
127 final SchemaContext schemaContext) {
128 createConcreteModelForPost(models, module.getName() + BaseYangSwaggerGenerator.MODULE_NAME_SUFFIX,
129 createPropertiesForPost(module, schemaContext, module.getName()));
132 private void processContainersAndLists(final Module module, final ObjectNode models,
133 final SchemaContext schemaContext) throws IOException {
134 final String moduleName = module.getName();
136 for (final DataSchemaNode childNode : module.getChildNodes()) {
137 // For every container and list in the module
138 if (childNode instanceof ContainerSchemaNode || childNode instanceof ListSchemaNode) {
139 processDataNodeContainer((DataNodeContainer) childNode, moduleName, models, true, schemaContext);
140 processDataNodeContainer((DataNodeContainer) childNode, moduleName, models, false, schemaContext);
146 * Process the RPCs for a Module Spits out a file each of the name
147 * {@code <rpcName>-input.json and <rpcName>-output.json}
148 * for each RPC that contains input & output elements.
150 * @param module module
151 * @throws IOException if I/O operation fails
153 private void processRPCs(final Module module, final ObjectNode models,
154 final SchemaContext schemaContext) throws IOException {
155 final Set<RpcDefinition> rpcs = module.getRpcs();
156 final String moduleName = module.getName();
157 for (final RpcDefinition rpc : rpcs) {
158 final ContainerSchemaNode input = rpc.getInput();
159 if (!input.getChildNodes().isEmpty()) {
160 final ObjectNode properties =
161 processChildren(input.getChildNodes(), moduleName, models, true, schemaContext);
163 final String filename = "(" + rpc.getQName().getLocalName() + ")input";
164 final ObjectNode childSchema = getSchemaTemplate();
165 childSchema.put(TYPE_KEY, OBJECT_TYPE);
166 childSchema.set(PROPERTIES_KEY, properties);
167 childSchema.put(ID_KEY, filename);
168 models.set(filename, childSchema);
170 processTopData(filename, models, input);
173 final ContainerSchemaNode output = rpc.getOutput();
174 if (!output.getChildNodes().isEmpty()) {
175 final ObjectNode properties =
176 processChildren(output.getChildNodes(), moduleName, models, true, schemaContext);
177 final String filename = "(" + rpc.getQName().getLocalName() + ")output";
178 final ObjectNode childSchema = getSchemaTemplate();
179 childSchema.put(TYPE_KEY, OBJECT_TYPE);
180 childSchema.set(PROPERTIES_KEY, properties);
181 childSchema.put(ID_KEY, filename);
182 models.set(filename, childSchema);
184 processTopData(filename, models, output);
189 private ObjectNode processTopData(final String filename, final ObjectNode models, final SchemaNode schemaNode) {
190 final ObjectNode items = JsonNodeFactory.instance.objectNode();
192 items.put(REF_KEY, filename);
193 final ObjectNode dataNodeProperties = JsonNodeFactory.instance.objectNode();
194 dataNodeProperties.put(TYPE_KEY, schemaNode instanceof ListSchemaNode ? ARRAY_TYPE : OBJECT_TYPE);
195 dataNodeProperties.set(ITEMS_KEY, items);
197 putIfNonNull(dataNodeProperties, DESCRIPTION_KEY, schemaNode.getDescription().orElse(null));
198 final ObjectNode properties = JsonNodeFactory.instance.objectNode();
199 properties.set(topLevelModule.getName() + ":" + schemaNode.getQName().getLocalName(), dataNodeProperties);
200 final ObjectNode finalChildSchema = getSchemaTemplate();
201 finalChildSchema.put(TYPE_KEY, OBJECT_TYPE);
202 finalChildSchema.set(PROPERTIES_KEY, properties);
203 finalChildSchema.put(ID_KEY, filename + OperationBuilder.TOP);
204 models.set(filename + OperationBuilder.TOP, finalChildSchema);
206 return dataNodeProperties;
210 * Processes the 'identity' statement in a yang model and maps it to a 'model' in the Swagger JSON spec.
212 * @param module The module from which the identity stmt will be processed
213 * @param models The ObjectNode in which the parsed identity will be put as a 'model' obj
215 private static void processIdentities(final Module module, final ObjectNode models) {
217 final String moduleName = module.getName();
218 final Set<IdentitySchemaNode> idNodes = module.getIdentities();
219 LOG.debug("Processing Identities for module {} . Found {} identity statements", moduleName, idNodes.size());
221 for (final IdentitySchemaNode idNode : idNodes) {
222 final ObjectNode identityObj = JsonNodeFactory.instance.objectNode();
223 final String identityName = idNode.getQName().getLocalName();
224 LOG.debug("Processing Identity: {}", identityName);
226 identityObj.put(ID_KEY, identityName);
227 putIfNonNull(identityObj, DESCRIPTION_KEY, idNode.getDescription().orElse(null));
229 final ObjectNode props = JsonNodeFactory.instance.objectNode();
231 if (idNode.getBaseIdentities().isEmpty()) {
233 * This is a base identity. So lets see if it has sub types. If it does, then add them to the model
236 final Set<IdentitySchemaNode> derivedIds = idNode.getDerivedIdentities();
238 if (derivedIds != null) {
239 final ArrayNode subTypes = new ArrayNode(JsonNodeFactory.instance);
240 for (final IdentitySchemaNode derivedId : derivedIds) {
241 subTypes.add(derivedId.getQName().getLocalName());
243 identityObj.set(SUB_TYPES_KEY, subTypes);
248 * This is a derived entity. Add it's base type & move on.
250 props.put(TYPE_KEY, idNode.getBaseIdentities().iterator().next().getQName().getLocalName());
253 // Add the properties. For a base type, this will be an empty object as required by the Swagger spec.
254 identityObj.set(PROPERTIES_KEY, props);
255 models.set(identityName, identityObj);
259 private ObjectNode processDataNodeContainer(
260 final DataNodeContainer dataNode, final String parentName, final ObjectNode models, final boolean isConfig,
261 final SchemaContext schemaContext) throws IOException {
262 if (dataNode instanceof ListSchemaNode || dataNode instanceof ContainerSchemaNode) {
263 final Iterable<DataSchemaNode> containerChildren = dataNode.getChildNodes();
264 final String localName = ((SchemaNode) dataNode).getQName().getLocalName();
265 final ObjectNode properties =
266 processChildren(containerChildren, parentName + "/" + localName, models, isConfig, schemaContext);
267 final String nodeName = parentName + (isConfig ? OperationBuilder.CONFIG : OperationBuilder.OPERATIONAL)
270 final ObjectNode childSchema = getSchemaTemplate();
271 childSchema.put(TYPE_KEY, OBJECT_TYPE);
272 childSchema.set(PROPERTIES_KEY, properties);
274 childSchema.put(ID_KEY, nodeName);
275 models.set(nodeName, childSchema);
278 createConcreteModelForPost(models, localName,
279 createPropertiesForPost(dataNode, schemaContext, parentName + "/" + localName));
282 return processTopData(nodeName, models, (SchemaNode) dataNode);
287 private static void createConcreteModelForPost(final ObjectNode models, final String localName,
288 final JsonNode properties) {
289 final String nodePostName = OperationBuilder.CONFIG + localName + Post.METHOD_NAME;
290 final ObjectNode postSchema = getSchemaTemplate();
291 postSchema.put(TYPE_KEY, OBJECT_TYPE);
292 postSchema.put(ID_KEY, nodePostName);
293 postSchema.set(PROPERTIES_KEY, properties);
294 models.set(nodePostName, postSchema);
297 private JsonNode createPropertiesForPost(final DataNodeContainer dataNodeContainer,
298 final SchemaContext schemaContext, final String parentName) {
299 final ObjectNode properties = JsonNodeFactory.instance.objectNode();
300 for (final DataSchemaNode childNode : dataNodeContainer.getChildNodes()) {
301 if (childNode instanceof ListSchemaNode || childNode instanceof ContainerSchemaNode) {
302 final ObjectNode items = JsonNodeFactory.instance.objectNode();
303 items.put(REF_KEY, parentName + "(config)" + childNode.getQName().getLocalName());
304 final ObjectNode property = JsonNodeFactory.instance.objectNode();
305 property.put(TYPE_KEY, childNode instanceof ListSchemaNode ? ARRAY_TYPE : OBJECT_TYPE);
306 property.set(ITEMS_KEY, items);
307 properties.set(childNode.getQName().getLocalName(), property);
308 } else if (childNode instanceof LeafSchemaNode) {
309 final ObjectNode property = processLeafNode((LeafSchemaNode) childNode, schemaContext);
310 properties.set(childNode.getQName().getLocalName(), property);
317 * Processes the nodes.
319 private ObjectNode processChildren(
320 final Iterable<DataSchemaNode> nodes, final String parentName, final ObjectNode models,
321 final boolean isConfig, final SchemaContext schemaContext) throws IOException {
322 final ObjectNode properties = JsonNodeFactory.instance.objectNode();
323 for (final DataSchemaNode node : nodes) {
324 if (node.isConfiguration() == isConfig) {
325 final String name = resolveNodesName(node, topLevelModule, schemaContext);
326 final ObjectNode property;
327 if (node instanceof LeafSchemaNode) {
328 property = processLeafNode((LeafSchemaNode) node, schemaContext);
330 } else if (node instanceof ListSchemaNode) {
331 property = processDataNodeContainer((ListSchemaNode) node, parentName, models, isConfig,
334 } else if (node instanceof LeafListSchemaNode) {
335 property = processLeafListNode((LeafListSchemaNode) node, schemaContext);
337 } else if (node instanceof ChoiceSchemaNode) {
338 if (((ChoiceSchemaNode) node).getCases().values().iterator().hasNext()) {
339 processChoiceNode(((ChoiceSchemaNode) node).getCases().values().iterator().next()
340 .getChildNodes(), parentName, models, schemaContext, isConfig, properties);
344 } else if (node instanceof AnyXmlSchemaNode) {
345 property = processAnyXMLNode((AnyXmlSchemaNode) node);
347 } else if (node instanceof AnyDataSchemaNode) {
348 property = processAnydataNode((AnyDataSchemaNode) node);
350 } else if (node instanceof ContainerSchemaNode) {
351 property = processDataNodeContainer((ContainerSchemaNode) node, parentName, models, isConfig,
355 throw new IllegalArgumentException("Unknown DataSchemaNode type: " + node.getClass());
357 putIfNonNull(property, DESCRIPTION_KEY, node.getDescription().orElse(null));
358 properties.set(topLevelModule.getName() + ":" + name, property);
364 private ObjectNode processLeafListNode(final LeafListSchemaNode listNode,
365 final SchemaContext schemaContext) {
366 final ObjectNode props = JsonNodeFactory.instance.objectNode();
367 props.put(TYPE_KEY, ARRAY_TYPE);
369 final ObjectNode itemsVal = JsonNodeFactory.instance.objectNode();
370 final Optional<ElementCountConstraint> optConstraint = listNode.getElementCountConstraint();
372 if (optConstraint.isPresent()) {
373 final Integer constraintMax = optConstraint.get().getMaxElements();
374 max = constraintMax == null ? 2 : constraintMax;
375 processElementCount(optConstraint.get(), props);
381 processTypeDef(listNode.getType(), listNode, itemsVal, schemaContext);
382 processTypeDef(listNode.getType(), listNode, itemsVal, schemaContext);
384 processTypeDef(listNode.getType(), listNode, itemsVal, schemaContext);
386 props.set(ITEMS_KEY, itemsVal);
391 private void processChoiceNode(
392 final Iterable<DataSchemaNode> nodes, final String moduleName, final ObjectNode models,
393 final SchemaContext schemaContext, final boolean isConfig, final ObjectNode properties)
395 for (final DataSchemaNode node : nodes) {
396 final String name = resolveNodesName(node, topLevelModule, schemaContext);
397 final ObjectNode property;
399 if (node instanceof LeafSchemaNode) {
400 property = processLeafNode((LeafSchemaNode) node, schemaContext);
402 } else if (node instanceof ListSchemaNode) {
403 property = processDataNodeContainer((ListSchemaNode) node, moduleName, models, isConfig,
406 } else if (node instanceof LeafListSchemaNode) {
407 property = processLeafListNode((LeafListSchemaNode) node, schemaContext);
409 } else if (node instanceof ChoiceSchemaNode) {
410 if (((ChoiceSchemaNode) node).getCases().values().iterator().hasNext()) {
411 processChoiceNode(((ChoiceSchemaNode) node).getCases().values().iterator().next().getChildNodes(),
412 moduleName, models, schemaContext, isConfig, properties);
416 } else if (node instanceof AnyXmlSchemaNode) {
417 property = processAnyXMLNode((AnyXmlSchemaNode) node);
419 } else if (node instanceof AnyDataSchemaNode) {
420 property = processAnydataNode((AnyDataSchemaNode) node);
422 } else if (node instanceof ContainerSchemaNode) {
423 property = processDataNodeContainer((ContainerSchemaNode) node, moduleName, models, isConfig,
427 throw new IllegalArgumentException("Unknown DataSchemaNode type: " + node.getClass());
430 putIfNonNull(property, DESCRIPTION_KEY, node.getDescription().orElse(null));
431 properties.set(name, property);
435 private static void processElementCount(final ElementCountConstraint constraint, final ObjectNode props) {
436 final Integer minElements = constraint.getMinElements();
437 if (minElements != null) {
438 props.put(MIN_ITEMS, minElements);
440 final Integer maxElements = constraint.getMaxElements();
441 if (maxElements != null) {
442 props.put(MAX_ITEMS, maxElements);
446 private static void processMandatory(final MandatoryAware node, final ObjectNode props) {
447 props.put(REQUIRED_KEY, node.isMandatory());
450 private ObjectNode processLeafNode(final LeafSchemaNode leafNode,
451 final SchemaContext schemaContext) {
452 final ObjectNode property = JsonNodeFactory.instance.objectNode();
454 final String leafDescription = leafNode.getDescription().orElse(null);
455 putIfNonNull(property, DESCRIPTION_KEY, leafDescription);
456 processMandatory(leafNode, property);
457 processTypeDef(leafNode.getType(), leafNode, property, schemaContext);
462 private static ObjectNode processAnydataNode(final AnyDataSchemaNode leafNode) {
463 final ObjectNode property = JsonNodeFactory.instance.objectNode();
465 final String leafDescription = leafNode.getDescription().orElse(null);
466 putIfNonNull(property, DESCRIPTION_KEY, leafDescription);
468 processMandatory(leafNode, property);
469 final String localName = leafNode.getQName().getLocalName();
470 property.put(TYPE_KEY, "example of anydata " + localName);
475 private static ObjectNode processAnyXMLNode(final AnyXmlSchemaNode leafNode) {
476 final ObjectNode property = JsonNodeFactory.instance.objectNode();
478 final String leafDescription = leafNode.getDescription().orElse(null);
479 putIfNonNull(property, DESCRIPTION_KEY, leafDescription);
481 processMandatory(leafNode, property);
482 final String localName = leafNode.getQName().getLocalName();
483 property.put(TYPE_KEY, "example of anyxml " + localName);
488 private String processTypeDef(final TypeDefinition<?> leafTypeDef, final DataSchemaNode node,
489 final ObjectNode property, final SchemaContext schemaContext) {
490 final String jsonType;
491 if (leafTypeDef.getDefaultValue() == null) {
492 if (leafTypeDef instanceof BinaryTypeDefinition) {
493 jsonType = processBinaryType(property);
495 } else if (leafTypeDef instanceof BitsTypeDefinition) {
496 jsonType = processBitsType((BitsTypeDefinition) leafTypeDef, property);
498 } else if (leafTypeDef instanceof EnumTypeDefinition) {
499 jsonType = processEnumType((EnumTypeDefinition) leafTypeDef, property);
501 } else if (leafTypeDef instanceof IdentityrefTypeDefinition) {
502 final String name = topLevelModule.getName();
503 jsonType = name + ":" + ((IdentityrefTypeDefinition) leafTypeDef).getIdentities().iterator().next()
504 .getQName().getLocalName();
506 } else if (leafTypeDef instanceof StringTypeDefinition) {
507 jsonType = processStringType(leafTypeDef, property, node.getQName().getLocalName());
509 } else if (leafTypeDef instanceof UnionTypeDefinition) {
510 jsonType = processUnionType((UnionTypeDefinition) leafTypeDef, property, schemaContext, node);
512 } else if (leafTypeDef instanceof EmptyTypeDefinition) {
513 jsonType = UNIQUE_EMPTY_IDENTIFIER;
515 } else if (leafTypeDef instanceof LeafrefTypeDefinition) {
516 return processLeafRef(node, property, schemaContext, leafTypeDef);
518 } else if (leafTypeDef instanceof BooleanTypeDefinition) {
521 } else if (leafTypeDef instanceof RangeRestrictedTypeDefinition) {
522 final Number maybeLower = ((RangeRestrictedTypeDefinition<?, ?>) leafTypeDef).getRangeConstraint()
523 .map(RangeConstraint::getAllowedRanges).map(RangeSet::span).map(Range::lowerEndpoint)
525 jsonType = String.valueOf(maybeLower);
528 jsonType = OBJECT_TYPE;
532 jsonType = String.valueOf(leafTypeDef.getDefaultValue());
534 putIfNonNull(property, TYPE_KEY, jsonType);
538 private String processLeafRef(final DataSchemaNode node, final ObjectNode property,
539 final SchemaContext schemaContext, final TypeDefinition<?> leafTypeDef) {
540 RevisionAwareXPath xpath = ((LeafrefTypeDefinition) leafTypeDef).getPathStatement();
541 final SchemaNode schemaNode;
543 final String xPathString = STRIP_PATTERN.matcher(xpath.toString()).replaceAll("");
544 xpath = new RevisionAwareXPathImpl(xPathString, xpath.isAbsolute());
547 if (xpath.isAbsolute()) {
548 module = findModule(schemaContext, leafTypeDef.getQName());
549 schemaNode = SchemaContextUtil.findDataSchemaNode(schemaContext, module, xpath);
551 module = findModule(schemaContext, node.getQName());
552 schemaNode = SchemaContextUtil.findDataSchemaNodeForRelativeXPath(schemaContext, module, node, xpath);
555 return processTypeDef(((TypedDataSchemaNode) schemaNode).getType(), (DataSchemaNode) schemaNode,
556 property, schemaContext);
559 private static Module findModule(final SchemaContext schemaContext, final QName qualifiedName) {
560 return schemaContext.findModule(qualifiedName.getNamespace(), qualifiedName.getRevision()).orElse(null);
563 private static String processBinaryType(final ObjectNode property) {
564 final ObjectNode media = JsonNodeFactory.instance.objectNode();
565 media.put(BINARY_ENCODING_KEY, BASE_64);
566 property.set(MEDIA_KEY, media);
570 private static String processEnumType(final EnumTypeDefinition enumLeafType,
571 final ObjectNode property) {
572 final List<EnumPair> enumPairs = enumLeafType.getValues();
573 ArrayNode enumNames = new ArrayNode(JsonNodeFactory.instance);
574 for (final EnumPair enumPair : enumPairs) {
575 enumNames.add(new TextNode(enumPair.getName()));
578 property.set(ENUM, enumNames);
579 return enumLeafType.getValues().iterator().next().getName();
582 private static String processBitsType(final BitsTypeDefinition bitsType,
583 final ObjectNode property) {
584 property.put(MIN_ITEMS, 0);
585 property.put(UNIQUE_ITEMS_KEY, true);
586 ArrayNode enumNames = new ArrayNode(JsonNodeFactory.instance);
587 final List<Bit> bits = bitsType.getBits();
588 for (final Bit bit : bits) {
589 enumNames.add(new TextNode(bit.getName()));
591 property.set(ENUM, enumNames);
593 return enumNames.iterator().next() + " " + enumNames.get(enumNames.size() - 1);
596 private static String processStringType(final TypeDefinition<?> stringType,
597 final ObjectNode property, final String nodeName) {
598 StringTypeDefinition type = (StringTypeDefinition) stringType;
599 Optional<LengthConstraint> lengthConstraints = ((StringTypeDefinition) stringType).getLengthConstraint();
600 while (!lengthConstraints.isPresent() && type.getBaseType() != null) {
601 type = type.getBaseType();
602 lengthConstraints = type.getLengthConstraint();
605 if (lengthConstraints.isPresent()) {
606 final Range<Integer> range = lengthConstraints.get().getAllowedRanges().span();
607 putIfNonNull(property, MIN_LENGTH_KEY, range.lowerEndpoint());
608 putIfNonNull(property, MAX_LENGTH_KEY, range.upperEndpoint());
611 if (type.getPatternConstraints().iterator().hasNext()) {
612 final PatternConstraint pattern = type.getPatternConstraints().iterator().next();
613 String regex = pattern.getJavaPatternString();
614 regex = regex.substring(1, regex.length() - 1);
615 final Generex generex = new Generex(regex);
616 return generex.random();
618 return "Some " + nodeName;
622 private String processUnionType(final UnionTypeDefinition unionType, final ObjectNode property,
623 final SchemaContext schemaContext, final DataSchemaNode node) {
624 final ArrayNode unionNames = new ArrayNode(JsonNodeFactory.instance);
625 for (final TypeDefinition<?> typeDef : unionType.getTypes()) {
626 unionNames.add(processTypeDef(typeDef, node, property, schemaContext));
628 property.set(ENUM, unionNames);
629 return unionNames.iterator().next().asText();
633 * Helper method to generate a pre-filled JSON schema object.
635 private static ObjectNode getSchemaTemplate() {
636 final ObjectNode schemaJSON = JsonNodeFactory.instance.objectNode();
637 schemaJSON.put(SCHEMA_KEY, SCHEMA_URL);
642 private static void putIfNonNull(final ObjectNode property, final String key, final Number number) {
643 if (key != null && number != null) {
644 if (number instanceof Double) {
645 property.put(key, (Double) number);
646 } else if (number instanceof Float) {
647 property.put(key, (Float) number);
648 } else if (number instanceof Integer) {
649 property.put(key, (Integer) number);
650 } else if (number instanceof Short) {
651 property.put(key, (Short) number);
652 } else if (number instanceof Long) {
653 property.put(key, (Long) number);
658 private static void putIfNonNull(final ObjectNode property, final String key, final String value) {
659 if (key != null && value != null) {
660 property.put(key, value);