ProjectConverter.java
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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 1997-2009 Sun Microsystems, Inc. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can obtain
* a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
* or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
* identifying information: "Portions Copyrighted [year]
* [name of copyright owner]"
*
* Contributor(s):
*
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package jsf2.demo.scrum.web.helper;
import jsf2.demo.scrum.model.entities.Project;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.convert.Converter;
import javax.faces.convert.ConverterException;
import javax.faces.convert.FacesConverter;
import java.util.HashMap;
import java.util.Map;
/**
* @author Dr. Spock (spock at dev.java.net)
*/
@FacesConverter(forClass = Project.class)
public class ProjectConverter implements Converter {
private static Map<Long, Project> cache = new HashMap<Long, Project>();
public Object getAsObject(FacesContext context, UIComponent component, String value) {
if (value == null || value.equals("0")) {
return null;
}
try {
return cache.get(Long.parseLong(value));
} catch (NumberFormatException e) {
throw new ConverterException("Invalid value: " + value, e);
}
}
public String getAsString(FacesContext context, UIComponent component, Object object) {
Project project = (Project) object;
Long id = project.getId();
if (id != null) {
cache.put(id, project);
return String.valueOf(id.longValue());
} else {
return "0";
}
}
}