Examples of org.apache.catalina.loader.WebappLoader

org.apache.catalina.loader.WebappLoader
Classloader implementation which is specialized for handling web applications in the most efficient way, while being Catalina aware (all accesses to resources are made through {@link org.apache.catalina.WebResourceRoot}). This class loader supports detection of modified Java classes, which can be used to implement auto-reload support.
This class loader is configured by adding the pathnames of directories, JAR files, and ZIP files with the addRepository() method, prior to calling start(). When a new class is required, these repositories will be consulted first to locate the class. If it is not present, the system class loader will be used instead. @author Craig R. McClanahan @author Remy Maucherat @version $Id: WebappLoader.java 1551238 2013-12-16 15:46:02Z markt $

                return;
            }
        }
        // TODO make that configurable ?
        //WebappLoader webappLoader = new WebappLoader( Thread.currentThread().getContextClassLoader() );
        WebappLoader webappLoader = createWebappLoader();
        Context context = null;
        if ( asWebApp )
        {
            context = container.addWebapp( contextPath, artifactWarDir.getAbsolutePath() );
        }

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        if (getLoader() == null) {      // (2) Required by Manager
            if (getPrivileged()) {
                if (debug >= 1)
                    log("Configuring privileged default Loader");
                setLoader(new WebappLoader(this.getClass().getClassLoader()));
            } else {
                if (debug >= 1)
                    log("Configuring non-privileged default Loader");
                setLoader(new WebappLoader(getParentClassLoader()));
            }
        }
        if (getManager() == null) {     // (3) After prerequisites
            if (debug >= 1)
                log("Configuring default Manager");

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        File contextConfigFile = new File(webappFolder, "META-INF/context.xml");


        if (contextConfigFile.exists())
            context.setConfigFile(contextConfigFile.getAbsolutePath());


        context.setLoader(new WebappLoader(this.getClass().getClassLoader()));


        host.addChild(context);


        tomcatServer.addEngine(engine);

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    private boolean isDefaultLoader(Loader loader) {


        if (!(loader instanceof WebappLoader)) {
            return (false);
        }
        WebappLoader wloader = (WebappLoader) loader;
        if ((wloader.getCheckInterval() != 15) ||
            (wloader.getDebug() != 0) ||
            (wloader.getDelegate() != false) ||
            !wloader.getLoaderClass().equals
             ("org.apache.catalina.loader.WebappClassLoader")) {
            return (false);
        }
        return (true);

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                    log.debug("No realm for this host " + realmName);
            }
        }
        
        if (getLoader() == null) {
            WebappLoader webappLoader = new WebappLoader(getParentClassLoader());
            webappLoader.setDelegate(getDelegate());
            setLoader(webappLoader);
        }


        // Initialize character set mapper
        getCharsetMapper();

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                    log.debug("No realm for this host " + realmName);
            }
        }
        
        if (getLoader() == null) {
            WebappLoader webappLoader = new WebappLoader(getParentClassLoader());
            webappLoader.setDelegate(getDelegate());
            setLoader(webappLoader);
        }


        // Initialize character set mapper
        getCharsetMapper();

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     */
    public String createWebappLoader(String parent)
        throws Exception {


        // Create a new WebappLoader instance
        WebappLoader loader = new WebappLoader();


        // Add the new instance to its parent component
        ObjectName pname = new ObjectName(parent);
        ContainerBase containerBase = getParentContainerFromParent(pname);
        if (containerBase != null) {

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                    log.debug("No realm for this host " + realmName);
            }
        }
        
        if (getLoader() == null) {
            WebappLoader webappLoader = new WebappLoader(getParentClassLoader());
            webappLoader.setDelegate(getDelegate());
            setLoader(webappLoader);
        }


        // Initialize character set mapper
        getCharsetMapper();

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      public URLClassLoader run() {
        return new URLClassLoader(urls, getClass().getClassLoader());
      }
    });


    WebappLoader loader = new WebappLoader(urlClassLoader);
    ctx.setLoader(loader);
    ContextConfig ctxCfg = new ContextConfig();
    ctx.addLifecycleListener(ctxCfg);


    ctxCfg.setDefaultWebXml("org/apache/catalin/startup/NO_DEFAULT_XML");

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                ok = false;
            }
        }


        if (getLoader() == null) {
            WebappLoader webappLoader = new WebappLoader(getParentClassLoader());
            webappLoader.setDelegate(getDelegate());
            setLoader(webappLoader);
        }


        // Initialize character set mapper
        getCharsetMapper();

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