Diagram is generic component to create visual elements and connect them on a web page. SVG is used on modern browsers and VML on IE 8 and below. Component
is highly flexible in terms of api, events and theming.
@Named("diagramBasicView")
@ViewScoped
public class BasicView implements Serializable {
private DefaultDiagramModel model;
@PostConstruct
public void init() {
model = new DefaultDiagramModel();
model.setMaxConnections(-1);
model.setConnectionsDetachable(false);
Element elementA = new Element("A", "20em", "6em");
elementA.addEndPoint(new DotEndPoint(EndPointAnchor.BOTTOM));
Element elementB = new Element("B", "10em", "18em");
elementB.addEndPoint(new DotEndPoint(EndPointAnchor.TOP));
Element elementC = new Element("C", "40em", "18em");
elementC.addEndPoint(new DotEndPoint(EndPointAnchor.TOP));
model.addElement(elementA);
model.addElement(elementB);
model.addElement(elementC);
model.connect(new Connection(elementA.getEndPoints().get(0), elementB.getEndPoints().get(0)));
model.connect(new Connection(elementA.getEndPoints().get(0), elementC.getEndPoints().get(0)));
}
public DiagramModel getModel() {
return model;
}
}
Session expired
Reloading page
Message:
StackTrace: java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(Unknown Source) at org.primefaces.component.lifecycle.LifecyclePhaseListener.getPhaseInfo(LifecyclePhaseListener.java:45) at org.primefaces.component.lifecycle.LifecyclePhaseListener.beforePhase(LifecyclePhaseListener.java:63) at org.apache.myfaces.lifecycle.PhaseListenerManager.informPhaseListenersBefore(PhaseListenerManager.java:77) at org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:183) at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:142) at javax.faces.lifecycle.LifecycleWrapper.execute(LifecycleWrapper.java:57) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:204) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:209) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) at org.primefaces.webapp.filter.NoCacheFilter.doFilter(NoCacheFilter.java:39) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) at org.primefaces.webapp.filter.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:42) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) at org.apache.openejb.server.httpd.EEFilter.doFilter(EEFilter.java:67) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:168) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90) at org.apache.tomee.catalina.OpenEJBValve.invoke(OpenEJBValve.java:45) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:481) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:130) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93) at org.apache.tomee.catalina.OpenEJBSecurityListener$RequestCapturer.invoke(OpenEJBSecurityListener.java:97) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:670) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:390) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:928) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1794) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52) at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.base/java.lang.Thread.run(Unknown Source)