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org.flowable.engine.impl.webservice.WSDLImporter Maven / Gradle / Ivy
/* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.flowable.engine.impl.webservice;
import java.io.IOException;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import javax.wsdl.BindingOperation;
import javax.wsdl.Definition;
import javax.wsdl.Operation;
import javax.wsdl.Port;
import javax.wsdl.Service;
import javax.wsdl.Types;
import javax.wsdl.WSDLException;
import javax.wsdl.extensions.schema.Schema;
import javax.wsdl.extensions.soap.SOAPAddress;
import javax.wsdl.factory.WSDLFactory;
import javax.wsdl.xml.WSDLReader;
import javax.xml.namespace.QName;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.flowable.bpmn.model.Import;
import org.flowable.common.engine.api.FlowableException;
import org.flowable.common.engine.impl.util.ReflectUtil;
import org.flowable.engine.impl.bpmn.data.SimpleStructureDefinition;
import org.flowable.engine.impl.bpmn.data.StructureDefinition;
import org.flowable.engine.impl.bpmn.parser.XMLImporter;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
import com.sun.codemodel.JClass;
import com.sun.codemodel.JDefinedClass;
import com.sun.codemodel.JFieldVar;
import com.sun.codemodel.JType;
import com.sun.tools.xjc.ConsoleErrorReporter;
import com.sun.tools.xjc.api.ErrorListener;
import com.sun.tools.xjc.api.Mapping;
import com.sun.tools.xjc.api.S2JJAXBModel;
import com.sun.tools.xjc.api.SchemaCompiler;
import com.sun.tools.xjc.api.XJC;
/**
* A WSDL importer
*
* @author Esteban Robles Luna
*/
public class WSDLImporter implements XMLImporter {
protected Map wsServices = new HashMap<>();
protected Map wsOperations = new HashMap<>();
protected Map structures = new HashMap<>();
protected String wsdlLocation;
protected String namespace;
public WSDLImporter() {
this.namespace = "";
}
@Override
public void importFrom(Import theImport, String sourceSystemId) {
this.namespace = theImport.getNamespace() == null ? "" : theImport.getNamespace() + ":";
this.importFrom(theImport.getLocation());
}
public void importFrom(String url) {
this.wsServices.clear();
this.wsOperations.clear();
this.structures.clear();
this.wsdlLocation = url;
try {
Definition definition = this.parseWSDLDefinition();
this.importServicesAndOperations(definition);
this.importTypes(definition.getTypes());
} catch (WSDLException e) {
throw new FlowableException(e.getMessage(), e);
}
}
/**
* Parse the WSDL definition using WSDL4J.
*/
protected Definition parseWSDLDefinition() throws WSDLException {
WSDLFactory wsdlFactory = WSDLFactory.newInstance();
WSDLReader reader = wsdlFactory.newWSDLReader();
reader.setFeature("javax.wsdl.verbose", false);
reader.setFeature("javax.wsdl.importDocuments", true);
Definition definition = reader.readWSDL(this.wsdlLocation);
return definition;
}
/**
* Imports services and operations from the WSDL definition
*/
protected void importServicesAndOperations(Definition definition) {
for (Object serviceObject : definition.getServices().values()) {
Service service = (Service) serviceObject;
WSService wsService = this.importService(service);
this.wsServices.put(this.namespace + wsService.getName(), wsService);
Port port = (Port) service.getPorts().values().iterator().next();
for (Object bindOperationObject : port.getBinding().getBindingOperations()) {
BindingOperation bindOperation = (BindingOperation) bindOperationObject;
WSOperation operation = this.processOperation(bindOperation.getOperation(), wsService);
wsService.addOperation(operation);
this.wsOperations.put(this.namespace + operation.getName(), operation);
}
}
}
/**
* Imports the service from the WSDL service definition
*/
protected WSService importService(Service service) {
String name = service.getQName().getLocalPart();
Port port = (Port) service.getPorts().values().iterator().next();
String location = "";
List extensionElements = port.getExtensibilityElements();
for (Object extension : extensionElements) {
if (extension instanceof SOAPAddress) {
SOAPAddress address = (SOAPAddress) extension;
location = address.getLocationURI();
}
}
WSService wsService = new WSService(this.namespace + name, location, this.wsdlLocation);
return wsService;
}
protected WSOperation processOperation(Operation wsOperation, WSService service) {
WSOperation operation = new WSOperation(this.namespace + wsOperation.getName(), wsOperation.getName(), service);
return operation;
}
/**
* Import the Types from the WSDL definition using the same strategy that Cxf uses taking advantage of JAXB
*/
protected void importTypes(Types types) {
SchemaCompiler compiler = XJC.createSchemaCompiler();
ErrorListener elForRun = new ConsoleErrorReporter();
compiler.setErrorListener(elForRun);
Element rootTypes = this.getRootTypes();
this.createDefaultStructures(rootTypes);
S2JJAXBModel intermediateModel = this.compileModel(types, compiler, rootTypes);
Collection mappings = intermediateModel.getMappings();
for (Mapping mapping : mappings) {
this.importStructure(mapping);
}
}
protected void importStructure(Mapping mapping) {
QName qname = mapping.getElement();
JDefinedClass theClass = (JDefinedClass) mapping.getType().getTypeClass();
SimpleStructureDefinition structure = (SimpleStructureDefinition) this.structures.get(this.namespace + qname.getLocalPart());
Map fields = theClass.fields();
int index = 0;
for (Entry entry : fields.entrySet()) {
final JType fieldType = entry.getValue().type();
final Class fieldClass = ReflectUtil.loadClass(fieldType.boxify().fullName());
final Class fieldParameterClass;
if (fieldType instanceof JClass) {
final JClass fieldClassType = (JClass) fieldType;
final List fieldTypeParameters = fieldClassType.getTypeParameters();
if (fieldTypeParameters.size() > 1) {
throw new FlowableException(
String.format("Field type '%s' with more than one parameter is not supported: %S",
fieldClassType, fieldTypeParameters));
} else if (fieldTypeParameters.isEmpty()) {
fieldParameterClass = null;
} else {
final JClass fieldParameterType = fieldTypeParameters.get(0);
// Hack because JClass.fullname() doesn't return the right class fullname for a nested class to be
// loaded from classloader. It should be contain "$" instead of "." as separator
boolean isFieldParameterTypeNeestedClass = false;
final Iterator theClassNeestedClassIt = theClass.classes();
while (theClassNeestedClassIt.hasNext() && !isFieldParameterTypeNeestedClass) {
final JDefinedClass neestedType = theClassNeestedClassIt.next();
if (neestedType.name().equals(fieldParameterType.name())) {
isFieldParameterTypeNeestedClass = true;
}
}
if (isFieldParameterTypeNeestedClass) {
// The parameter type is a nested class
fieldParameterClass = ReflectUtil
.loadClass(theClass.erasure().fullName() + "$" + fieldParameterType.name());
} else {
// The parameter type is not a nested class
fieldParameterClass = ReflectUtil.loadClass(fieldParameterType.erasure().fullName());
}
}
} else {
fieldParameterClass = null;
}
structure.setFieldName(index, entry.getKey(), fieldClass, fieldParameterClass);
index++;
}
}
protected S2JJAXBModel compileModel(Types types, SchemaCompiler compiler, Element rootTypes) {
Schema schema = (Schema) types.getExtensibilityElements().get(0);
compiler.parseSchema(schema.getDocumentBaseURI() + "#types1", rootTypes);
S2JJAXBModel intermediateModel = compiler.bind();
return intermediateModel;
}
protected void createDefaultStructures(Element rootTypes) {
NodeList complexTypes = rootTypes.getElementsByTagNameNS("http://www.w3.org/2001/XMLSchema", "complexType");
for (int i = 0; i < complexTypes.getLength(); i++) {
Element element = (Element) complexTypes.item(i);
String structureName = this.namespace + element.getAttribute("name");
SimpleStructureDefinition structure = new SimpleStructureDefinition(structureName);
this.structures.put(structure.getId(), structure);
}
}
protected Element getRootTypes() {
try {
DocumentBuilder docBuilder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
Document doc = docBuilder.parse(this.wsdlLocation);
Element root = (Element) doc.getFirstChild();
Element typesElement = (Element) root.getElementsByTagName("wsdl:types").item(0);
return (Element) typesElement.getElementsByTagNameNS("http://www.w3.org/2001/XMLSchema", "schema").item(0);
} catch (SAXException | IOException | ParserConfigurationException e) {
throw new FlowableException(e.getMessage(), e);
}
}
@Override
public Map getStructures() {
return this.structures;
}
@Override
public Map getServices() {
return this.wsServices;
}
@Override
public Map getOperations() {
return this.wsOperations;
}
}
