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package com.sun.jersey.server.wadl;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.ws.rs.FormParam;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.UriInfo;
import javax.ws.rs.ext.Providers;
import javax.xml.namespace.QName;
import com.sun.jersey.api.model.AbstractMethod;
import com.sun.jersey.api.model.AbstractResource;
import com.sun.jersey.api.model.AbstractResourceMethod;
import com.sun.jersey.api.model.AbstractSubResourceLocator;
import com.sun.jersey.api.model.AbstractSubResourceMethod;
import com.sun.jersey.api.model.Parameter;
import com.sun.jersey.api.model.Parameterized;
import com.sun.jersey.core.util.FeaturesAndProperties;
import com.sun.jersey.impl.ImplMessages;
import com.sun.jersey.server.impl.BuildId;
import com.sun.jersey.server.impl.modelapi.annotation.IntrospectionModeller;
import com.sun.jersey.server.wadl.generators.WadlGeneratorJAXBGrammarGenerator;
import com.sun.research.ws.wadl.Application;
import com.sun.research.ws.wadl.Doc;
import com.sun.research.ws.wadl.Param;
import com.sun.research.ws.wadl.ParamStyle;
import com.sun.research.ws.wadl.Representation;
import com.sun.research.ws.wadl.Request;
import com.sun.research.ws.wadl.Resource;
import com.sun.research.ws.wadl.Resources;
import com.sun.research.ws.wadl.Response;
/**
* This class implements the algorithm how the WADL is built for one or more
* {@link AbstractResource} classes. WADL artifacts are created by a
* {@link WadlGenerator}.
*
* @author Marc Hadley
* @author Martin Grotzke (martin.grotzke at freiheit.com)
*/
public class WadlBuilder {
private WadlGenerator _wadlGenerator;
/**
* Create default WADL builder.
*/
public WadlBuilder() {
this(createDefaultGenerator());
}
/**
* Create WADL builder that utilizes given WADL generator.
* The generator is expected to by initialized.
*
* @param wadlGenerator initialized WADL generator.
*/
public WadlBuilder(WadlGenerator wadlGenerator) {
_wadlGenerator = wadlGenerator;
}
/**
* Generate WADL for a set of resources.
* @param resources the set of resources
* @param info a UriInfo to provide context for the request
* @return the JAXB WADL application bean
*/
public ApplicationDescription generate(UriInfo info, Set resources) {
return generate(null, null, info, resources);
}
/**
* Generate WADL for a set of resources.
* @param resources the set of resources
* @param info a UriInfo to provide context for the request
* @param providers an instance of Providers required for some WADL generators
* @param fap an instance of FeaturesAndProperties required from some WADL generators
* @return the JAXB WADL application bean
*/
public ApplicationDescription generate(Providers providers, FeaturesAndProperties fap, UriInfo info, Set resources) {
// Provide the environment
_wadlGenerator.setEnvironment(new WadlGenerator.Environment()
.setProviders(providers).setFeaturesAndProperties(fap));
//
Application wadlApplication = _wadlGenerator.createApplication(info);
Resources wadlResources = _wadlGenerator.createResources();
// for each resource
for (AbstractResource r : resources) {
Resource wadlResource = generateResource(r, null);
wadlResources.getResource().add(wadlResource);
}
wadlApplication.getResources().add(wadlResources);
addVersion(wadlApplication);
// Build any external grammars
WadlGenerator.ExternalGrammarDefinition external =
_wadlGenerator.createExternalGrammar();
//
ApplicationDescription description = new ApplicationDescription(wadlApplication, external);
// Attach the data to the parts of the model
_wadlGenerator.attachTypes(description);
// Return the description of the application
return description;
}
/**
* Generate WADL for a resource.
* @param resource the resource
* @param description the overall application description so we can
* @param info a UriInfo to provide context for the request
* @param providers an instance of Providers required for some WADL generators
* @param fap an instance of FeaturesAndProperties required from some WADL generators
* @return the JAXB WADL application bean
*/
public Application generate(
Providers providers,
FeaturesAndProperties fap,
UriInfo info,
ApplicationDescription description,
AbstractResource resource) {
// Provide the environment
_wadlGenerator.setEnvironment(new WadlGenerator.Environment()
.setProviders(providers).setFeaturesAndProperties(fap));
//
Application wadlApplication = _wadlGenerator.createApplication(info);
Resources wadlResources = _wadlGenerator.createResources();
Resource wadlResource = generateResource(resource, null);
wadlResources.getResource().add(wadlResource);
wadlApplication.getResources().add(wadlResources);
addVersion(wadlApplication);
// Attach the data to the parts of the model
_wadlGenerator.attachTypes(description);
// Return the WADL
return wadlApplication;
}
/**
* Generate WADL for a virtual subresource resulting from sub resource
* methods.
* @param description the overall application description so we can
* @param resource the parent resource
* @param path the value of the methods path annotations
* @return the JAXB WADL application bean
*/
public Application generate(
Providers providers,
FeaturesAndProperties fap,
UriInfo info,
ApplicationDescription description,
AbstractResource resource, String path) {
// Provide the environment
_wadlGenerator.setEnvironment(new WadlGenerator.Environment()
.setProviders(providers).setFeaturesAndProperties(fap));
//
Application wadlApplication = _wadlGenerator.createApplication(info);
Resources wadlResources = _wadlGenerator.createResources();
Resource wadlResource = generateSubResource(resource, path);
wadlResources.getResource().add(wadlResource);
wadlApplication.getResources().add(wadlResources);
addVersion(wadlApplication);
// Attach the data to the parts of the model
_wadlGenerator.attachTypes(description);
// Return the WADL
return wadlApplication;
}
private void addVersion(Application wadlApplication) {
// Include Jersey version as doc element with generatedBy attribute
Doc d = new Doc();
d.getOtherAttributes().put(new QName("http://jersey.java.net/", "generatedBy", "jersey"),
BuildId.getBuildId());
wadlApplication.getDoc().add(0, d);
}
private com.sun.research.ws.wadl.Method generateMethod(AbstractResource r, final Map wadlResourceParams, final AbstractResourceMethod m) {
com.sun.research.ws.wadl.Method wadlMethod = _wadlGenerator.createMethod(r, m);
// generate the request part
Request wadlRequest = generateRequest(r, m, wadlResourceParams);
if (wadlRequest != null) {
wadlMethod.setRequest(wadlRequest);
}
// generate the response part
final List responses = generateResponses(r, m);
if(responses != null) {
wadlMethod.getResponse().addAll(responses);
}
return wadlMethod;
}
private Request generateRequest(AbstractResource r, final AbstractResourceMethod m,
Map wadlResourceParams) {
if (m.getParameters().isEmpty()) {
return null;
}
Request wadlRequest = _wadlGenerator.createRequest(r, m);
for (Parameter p : m.getParameters()) {
if (p.getSource() == Parameter.Source.ENTITY) {
for (MediaType mediaType : m.getSupportedInputTypes()) {
setRepresentationForMediaType(r, m, mediaType, wadlRequest);
}
} else if (p.getAnnotation().annotationType() == FormParam.class) {
// Use application/x-www-form-urlencoded if no @Consumes
List supportedInputTypes = m.getSupportedInputTypes();
if (supportedInputTypes.isEmpty()
|| (supportedInputTypes.size() == 1 && supportedInputTypes.get(0).isWildcardType())) {
supportedInputTypes = Collections.singletonList(MediaType.APPLICATION_FORM_URLENCODED_TYPE);
}
for (MediaType mediaType : supportedInputTypes) {
final Representation wadlRepresentation = setRepresentationForMediaType(r, m, mediaType, wadlRequest);
if (getParamByName(wadlRepresentation.getParam(), p.getSourceName()) == null) {
final Param wadlParam = generateParam(r, m, p);
if (wadlParam != null) {
wadlRepresentation.getParam().add(wadlParam);
}
}
}
} else if (p.getAnnotation().annotationType().getName().equals("com.sun.jersey.multipart.FormDataParam")) { // jersey-multipart support
// Use multipart/form-data if no @Consumes
List supportedInputTypes = m.getSupportedInputTypes();
if (supportedInputTypes.isEmpty()
|| (supportedInputTypes.size() == 1 && supportedInputTypes.get(0).isWildcardType())) {
supportedInputTypes = Collections.singletonList(MediaType.MULTIPART_FORM_DATA_TYPE);
}
for (MediaType mediaType : supportedInputTypes) {
final Representation wadlRepresentation = setRepresentationForMediaType(r, m, mediaType, wadlRequest);
if (getParamByName(wadlRepresentation.getParam(), p.getSourceName()) == null) {
final Param wadlParam = generateParam(r, m, p);
if (wadlParam != null) {
wadlRepresentation.getParam().add(wadlParam);
}
}
}
} else {
Param wadlParam = generateParam(r, m, p);
if (wadlParam == null) {
continue;
}
if (wadlParam.getStyle() == ParamStyle.TEMPLATE || wadlParam.getStyle() == ParamStyle.MATRIX) {
wadlResourceParams.put(wadlParam.getName(), wadlParam);
} else {
wadlRequest.getParam().add(wadlParam);
}
}
}
if (wadlRequest.getRepresentation().size() + wadlRequest.getParam().size() == 0) {
return null;
} else {
return wadlRequest;
}
}
private Param getParamByName(final List params, final String name) {
for (Param param : params) {
if (param.getName().equals(name)) {
return param;
}
}
return null;
}
/**
* Create the wadl {@link Representation} for the specified {@link MediaType} if not yet
* existing for the wadl {@link Request} and return it.
* @param r the resource
* @param m the resource method
* @param mediaType an accepted media type of the resource method
* @param wadlRequest the wadl request the wadl representation is to be created for (if not yet existing).
* @author Martin Grotzke
* @return the wadl request representation for the specified {@link MediaType}.
*/
private Representation setRepresentationForMediaType(AbstractResource r,
final AbstractResourceMethod m, MediaType mediaType,
Request wadlRequest) {
Representation wadlRepresentation = getRepresentationByMediaType(wadlRequest.getRepresentation(), mediaType);
if (wadlRepresentation == null) {
wadlRepresentation = _wadlGenerator.createRequestRepresentation(r, m, mediaType);
wadlRequest.getRepresentation().add(wadlRepresentation);
}
return wadlRepresentation;
}
private Representation getRepresentationByMediaType(
final List representations, MediaType mediaType) {
for (Representation representation : representations) {
if (mediaType.toString().equals(representation.getMediaType())) {
return representation;
}
}
return null;
}
private Param generateParam(AbstractResource r, AbstractMethod m, final Parameter p) {
if (p.getSource() == Parameter.Source.ENTITY || p.getSource() == Parameter.Source.CONTEXT) {
return null;
}
Param wadlParam = _wadlGenerator.createParam(r, m, p);
return wadlParam;
}
private Resource generateResource(AbstractResource r, String path) {
return generateResource(r, path, Collections.>emptySet());
}
private Resource generateResource(AbstractResource r, String path, Set> visitedClasses) {
Resource wadlResource = _wadlGenerator.createResource(r, path);
// prevent infinite recursion
if (visitedClasses.contains(r.getResourceClass())) {
return wadlResource;
} else {
visitedClasses = new HashSet>(visitedClasses);
visitedClasses.add(r.getResourceClass());
}
Map wadlResourceParams = new HashMap();
// add resource field/setter parameters that are associated with the resource PATH template
List fieldsOrSetters = new LinkedList();
if (r.getFields() != null) {
fieldsOrSetters.addAll(r.getFields());
}
if (r.getSetterMethods() != null) {
fieldsOrSetters.addAll(r.getSetterMethods());
}
for (Parameterized f : fieldsOrSetters) {
for (Parameter fp : f.getParameters()) {
Param wadlParam = generateParam(r, null, fp);
if (wadlParam != null) {
wadlResource.getParam().add(wadlParam);
}
}
}
// for each resource method
for (AbstractResourceMethod m : r.getResourceMethods()) {
com.sun.research.ws.wadl.Method wadlMethod = generateMethod(r, wadlResourceParams, m);
wadlResource.getMethodOrResource().add(wadlMethod);
}
// add method parameters that are associated with the resource PATH template
for (Param wadlParam : wadlResourceParams.values()) {
wadlResource.getParam().add(wadlParam);
}
// for each sub-resource method
Map wadlSubResources = new HashMap();
Map> wadlSubResourcesParams =
new HashMap>();
for (AbstractSubResourceMethod m : r.getSubResourceMethods()) {
// find or create sub resource for uri template
String template = m.getPath().getValue();
Resource wadlSubResource = wadlSubResources.get(template);
Map wadlSubResourceParams = wadlSubResourcesParams.get(template);
if (wadlSubResource == null) {
wadlSubResource = new Resource();
wadlSubResource.setPath(template);
wadlSubResources.put(template, wadlSubResource);
wadlSubResourceParams = new HashMap();
wadlSubResourcesParams.put(template, wadlSubResourceParams);
wadlResource.getMethodOrResource().add(wadlSubResource);
}
com.sun.research.ws.wadl.Method wadlMethod = generateMethod(r, wadlSubResourceParams, m);
wadlSubResource.getMethodOrResource().add(wadlMethod);
}
// add parameters that are associated with each sub-resource method PATH template
for (Map.Entry e : wadlSubResources.entrySet()) {
String template = e.getKey();
Resource wadlSubResource = e.getValue();
Map wadlSubResourceParams = wadlSubResourcesParams.get(template);
for (Param wadlParam : wadlSubResourceParams.values()) {
wadlSubResource.getParam().add(wadlParam);
}
}
// for each sub resource locator
for (AbstractSubResourceLocator l : r.getSubResourceLocators()) {
AbstractResource subResource = IntrospectionModeller.createResource(
l.getMethod().getReturnType());
Resource wadlSubResource = generateResource(subResource,
l.getPath().getValue(), visitedClasses);
wadlResource.getMethodOrResource().add(wadlSubResource);
for (Parameter p : l.getParameters()) {
Param wadlParam = generateParam(r, l, p);
if (wadlParam != null && wadlParam.getStyle() == ParamStyle.TEMPLATE) {
wadlSubResource.getParam().add(wadlParam);
}
}
}
return wadlResource;
}
private Resource generateSubResource(AbstractResource r, String path) {
Resource wadlResource = new Resource();
if (r.isRootResource()) {
StringBuilder b = new StringBuilder(r.getPath().getValue());
if (!(r.getPath().getValue().endsWith("/") || path.startsWith("/"))) {
b.append("/");
}
b.append(path);
wadlResource.setPath(b.toString());
}
// for each sub-resource method
Map wadlSubResourceParams = new HashMap();
for (AbstractSubResourceMethod m : r.getSubResourceMethods()) {
// find or create sub resource for uri template
String template = m.getPath().getValue();
if (!template.equals(path)
&& !template.equals('/' + path)) {
continue;
}
com.sun.research.ws.wadl.Method wadlMethod = generateMethod(r, wadlSubResourceParams, m);
wadlResource.getMethodOrResource().add(wadlMethod);
}
// add parameters that are associated with each sub-resource method PATH template
for (Param wadlParam : wadlSubResourceParams.values()) {
wadlResource.getParam().add(wadlParam);
}
return wadlResource;
}
private List generateResponses(AbstractResource r, final AbstractResourceMethod m) {
if (m.getMethod().getReturnType() == void.class) {
return null;
}
return _wadlGenerator.createResponses(r, m);
}
/**
* Create and initialize the default WADL generator.
*
* @return initialized default WADL generator.
*
* @throws RuntimeException in case that the generator initialization fails.
*/
private static WadlGeneratorJAXBGrammarGenerator createDefaultGenerator() throws RuntimeException {
final WadlGeneratorJAXBGrammarGenerator wadlGeneratorJAXBGrammarGenerator = new WadlGeneratorJAXBGrammarGenerator();
try {
wadlGeneratorJAXBGrammarGenerator.init();
} catch (Exception ex) {
throw new RuntimeException(ImplMessages.ERROR_CREATING_DEFAULT_WADL_GENERATOR(), ex);
}
return wadlGeneratorJAXBGrammarGenerator;
}
}
