Examples of org.apache.catalina.Valve

org.apache.catalina.Valve

A Valve is a request processing component associated with a particular Container. A series of Valves are generally associated with each other into a Pipeline. The detailed contract for a Valve is included in the description of the invoke() method below.
HISTORICAL NOTE: The "Valve" name was assigned to this concept because a valve is what you use in a real world pipeline to control and/or modify flows through it. @author Craig R. McClanahan @author Gunnar Rjnning @author Peter Donald @version $Revision: 467222 $ $Date: 2006-10-24 05:17:11 +0200 (mar., 24 oct. 2006) $

        while ((sso == null) && (parent != null)) {
            if (!(parent instanceof Pipeline)) {
                parent = parent.getParent();
                continue;
            }
            Valve valves[] = ((Pipeline) parent).getValves();
            for (int i = 0; i < valves.length; i++) {
                if (valves[i] instanceof SingleSignOn) {
                    sso = (SingleSignOn) valves[i];
                    break;
                }

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     * @param valve Valve to be distinguished as the basic Valve
     */
    public void setBasic(Valve valve) {


        // Change components if necessary
        Valve oldBasic = this.basic;
        if (oldBasic == valve)
            return;


        // Stop the old component if necessary
        if (oldBasic != null) {

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            registerValve(valve);
        }


        // Add this Valve to the set associated with this Pipeline
        synchronized (valves) {
            Valve results[] = new Valve[valves.length +1];
            System.arraycopy(valves, 0, results, 0, valves.length);
            results[valves.length] = valve;
            valves = results;
        }

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    public Valve[] getValves() {


        if (basic == null)
            return (valves);
        synchronized (valves) {
            Valve results[] = new Valve[valves.length + 1];
            System.arraycopy(valves, 0, results, 0, valves.length);
            results[valves.length] = basic;
            return (results);
        }

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            }
            if (j < 0)
                return;


            // Remove this valve from our list
            Valve results[] = new Valve[valves.length - 1];
            int n = 0;
            for (int i = 0; i < valves.length; i++) {
                if (i == j)
                    continue;
                results[n++] = valves[i];

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                ((HttpServletResponse) servletResponse).setStatus(
                        HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
            }


            Host host = (Host) context.getParent();
            Valve stdHostValve = host.getPipeline().getBasic();
            if (stdHostValve instanceof StandardHostValve) {
                ((StandardHostValve) stdHostValve).throwable(request,
                        request.getResponse(), t);
            }

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        if (this instanceof Authenticator)
            return (Authenticator) this;
        
        Pipeline pipeline = getPipeline();
        if (pipeline != null) {
            Valve basic = pipeline.getBasic();
            if ((basic != null) && (basic instanceof Authenticator))
                return (Authenticator) basic;
            Valve valves[] = pipeline.getValves();
            for (int i = 0; i < valves.length; i++) {
                if (valves[i] instanceof Authenticator)
                    return (Authenticator) valves[i];
            }
        }

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                    for (int i=0; !found && i<names.length; i++)
                        if(errorReportValveObjectName.equals(names[i]))
                            found = true ;
                    }
                    if(!found) {            
                        Valve valve = (Valve) Class.forName(errorReportValveClass)
                        .newInstance();
                        addValve(valve);
                        errorReportValveObjectName = ((ValveBase)valve).getObjectName() ;
                    }
            } catch (Throwable t) {

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            }
            if (targetContainer == null) {
                log.warn("Could not find the container named [" + containerName + "] in the service [" + serviceName + "]");
                return;
            }
            Valve targetValve = findValve(targetContainer, seq);
            if (targetValve == null) {
                log.warn("Could not find the container named [" + containerName + "] with sequence [" + seq + "] in the service [" + serviceName + "]");
                return;
            }
            valve = targetValve;

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        }
        
        //Set a UserTransactionBeforeAfter
        interceptor = new UserTransactionBeforeAfter(interceptor, index++, ctx.getUserTransaction());


        Valve clusteredValve = ctx.getClusteredValve();
        if (null != clusteredValve) {
            addValve(clusteredValve);
        }
        
        //Set the BeforeAfters as a valve

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