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Apache CXF example source code file (CorbaUnionListener.java)

This example Apache CXF source code file (CorbaUnionListener.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Apache CXF tags/keywords

corba, corbaobjecthandler, corbaobjecthandler, corbaprimitivehandler, corbaprimitivehandler, corbatypelistener, corbatypemap, corbaunionlistener, list, orb, qname, qname, serviceinfo, string, string, util

The Apache CXF CorbaUnionListener.java source code

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you 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.apache.cxf.binding.corba.types;

import java.util.List;

import javax.xml.namespace.QName;

import org.apache.cxf.binding.corba.CorbaTypeMap;
import org.apache.cxf.binding.corba.wsdl.CaseType;
import org.apache.cxf.binding.corba.wsdl.Union;
import org.apache.cxf.binding.corba.wsdl.Unionbranch;
import org.apache.cxf.service.model.ServiceInfo;
import org.omg.CORBA.ORB;
import org.omg.CORBA.TCKind;

public class CorbaUnionListener extends AbstractCorbaTypeListener {

    private CorbaTypeMap typeMap;
    private ServiceInfo serviceInfo;
    private ORB orb;
    private List<Unionbranch> branches;
    private CorbaTypeListener currentTypeListener;
    private Union unionType;

    public CorbaUnionListener(CorbaObjectHandler handler,
            CorbaTypeMap tm, ORB oorb,
            ServiceInfo sInfo) {
        super(handler);
        typeMap = tm;
        serviceInfo = sInfo;
        orb = oorb;
        unionType = (Union) handler.getType();
        branches = unionType.getUnionbranch();  
    }

    public void processStartElement(QName name) {
        if (currentTypeListener == null) {
            for (Unionbranch branch : branches) {               
                CorbaObjectHandler content;
                QName unionName = null;
                String branchName = branch.getName();
                if (branch.getName().equals(name.getLocalPart())) {
                    unionName = name;
                } else if (branches.size() == 1) {
                    unionName = handler.getName();
                }
                if (unionName != null) {
                    CorbaObjectHandler discObj =
                        CorbaHandlerUtils.createTypeHandler(orb,
                                                            new QName("discriminator"),
                                                            unionType.getDiscriminator(),
                                                            typeMap);
                    ((CorbaUnionHandler)handler).setDiscriminator(discObj);
                    String descriminatorValue = determineDescriminatorValue(branch);
                    ((CorbaUnionHandler)handler).setDiscriminatorValueFromData(descriminatorValue);

                    currentTypeListener =
                        CorbaHandlerUtils.getTypeListener(unionName,
                                                          branch.getIdltype(),
                                                          typeMap,
                                                          orb,
                                                          serviceInfo);
                    currentTypeListener.setNamespaceContext(ctx);
                    content = currentTypeListener.getCorbaObject();
                    ((CorbaUnionHandler)handler).setValue(branchName, content);
                    if (unionType.isSetNillable() && unionType.isNillable()) {
                        currentTypeListener.processStartElement(name);
                    }
                } else {
                    QName emptyBranchContentQName = 
                        new QName(name.getNamespaceURI(), branchName);
                    content = CorbaHandlerUtils.initializeObjectHandler(orb,
                                                                        emptyBranchContentQName,
                                                                        branch.getIdltype(),
                                                                        typeMap,
                                                                        serviceInfo);
                }                
                ((CorbaUnionHandler)handler).addCase(content);
            }
        } else {
            currentTypeListener.processStartElement(name);
        }
    }

    public void processCharacters(String text) {
        if (currentTypeListener != null) {
            currentTypeListener.processCharacters(text);
        } else {
            //Nillable primitive cases, you do not get the start element            
            CorbaPrimitiveHandler discObj =
                new CorbaPrimitiveHandler(new QName("discriminator"),
                                          unionType.getDiscriminator(),
                                          orb.get_primitive_tc(TCKind.from_int(TCKind._tk_boolean)),
                                          null);
            discObj.setValue(Boolean.TRUE);
            ((CorbaUnionHandler)handler).setDiscriminator(discObj);           
            CorbaTypeListener typeListener =
                CorbaHandlerUtils.getTypeListener(handler.getName(),
                                                  branches.get(0).getIdltype(),
                                                  typeMap,
                                                  orb,
                                                  serviceInfo);
            typeListener.setNamespaceContext(ctx);
            ((CorbaUnionHandler)handler).setValue("value", typeListener.getCorbaObject());
            typeListener.processCharacters(text);
        }
    }

    public void processEndElement(QName name) {
        if (currentTypeListener != null) {
            currentTypeListener.processEndElement(name);
        }
    }

    private String determineDescriminatorValue(Unionbranch branch) {
        String descriminatorValue;
        // Determine the value of the discriminator.  
        List<CaseType> branchCases = branch.getCase();
        if (branchCases.size() != 0) {
            CaseType caseLabel = branchCases.get(0);
            descriminatorValue = caseLabel.getLabel();
        } else {
            // This represents the default case.
            descriminatorValue = ((CorbaUnionHandler)handler).createDefaultDiscriminatorLabel();
        }
        return descriminatorValue;
    }

    public void processWriteAttribute(String prefix,
                                      String namespaceURI,
                                      String localName,
                                      String val) {
        if ("nil".equals(localName)) {
            CorbaPrimitiveHandler discObj =
                new CorbaPrimitiveHandler(new QName("discriminator"),
                                          unionType.getDiscriminator(),
                                          orb.get_primitive_tc(TCKind.from_int(TCKind._tk_boolean)),
                                          null);
            discObj.setValue(Boolean.FALSE);
            ((CorbaUnionHandler)handler).setDiscriminator(discObj);
            Unionbranch branch = branches.get(0);
            QName emptyBranchContentQName = 
                new QName(handler.getName().getNamespaceURI(), branch.getName());
            CorbaObjectHandler content = CorbaHandlerUtils.initializeObjectHandler(orb,
                                                                                   emptyBranchContentQName,
                                                                                   branch.getIdltype(),
                                                                                   typeMap,
                                                                                   serviceInfo);
            ((CorbaUnionHandler)handler).addCase(content);
        } else if (currentTypeListener != null) {
            currentTypeListener.processWriteAttribute(prefix, namespaceURI, localName, val);
        }
    }

    public void processWriteNamespace(String prefix, String namespaceURI) {
        if (currentTypeListener != null) {
            currentTypeListener.processWriteNamespace(prefix, namespaceURI);
        }
    }

}

Other Apache CXF examples (source code examples)

Here is a short list of links related to this Apache CXF CorbaUnionListener.java source code file:

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