Examples of org.apache.catalina.CometFilter

org.apache.catalina.CometFilter
A Comet filter, similar to regular filters, performs filtering tasks on either the request to a resource (a Comet servlet), or on the response from a resource, or both.

Filters perform filtering in the doFilterEvent method. Every Filter has access to a FilterConfig object from which it can obtain its initialization parameters, a reference to the ServletContext which it can use, for example, to load resources needed for filtering tasks.
Filters are configured in the deployment descriptor of a web application
Examples that have been identified for this design are
1) Authentication Filters
2) Logging and Auditing Filters
3) Image conversion Filters
4) Data compression Filters
5) Encryption Filters
6) Tokenizing Filters
7) Filters that trigger resource access events
8) XSL/T filters
9) Mime-type chain Filter

@author Remy Maucherat @author Filip Hanik

        throws IOException, ServletException {


        // Call the next filter if there is one
        if (pos < n) {
            ApplicationFilterConfig filterConfig = filters[pos++];
            CometFilter filter = null;
            try {
                filter = (CometFilter) filterConfig.getFilter();
                // FIXME: No instance listener processing for events for now
                /*
                support.fireInstanceEvent(InstanceEvent.BEFORE_FILTER_EVENT,
                        filter, event);
                        */


                if( Globals.IS_SECURITY_ENABLED ) {
                    final CometEvent ev = event;
                    Principal principal = 
                        ev.getHttpServletRequest().getUserPrincipal();


                    Object[] args = new Object[]{ev, this};
                    SecurityUtil.doAsPrivilege
                        ("doFilterEvent", (Filter) filter, cometClassType, args);


                    args = null;
                } else {  
                    filter.doFilterEvent(event, this);
                }


                /*support.fireInstanceEvent(InstanceEvent.AFTER_FILTER_EVENT,
                        filter, event);*/
            } catch (IOException e) {

View Full Code Here

        throws IOException, ServletException {


        // Call the next filter if there is one
        if (pos < n) {
            ApplicationFilterConfig filterConfig = filters[pos++];
            CometFilter filter = null;
            try {
                filter = (CometFilter) filterConfig.getFilter();
                // FIXME: No instance listener processing for events for now
                /*
                support.fireInstanceEvent(InstanceEvent.BEFORE_FILTER_EVENT,
                        filter, event);
                        */


                if( Globals.IS_SECURITY_ENABLED ) {
                    final CometEvent ev = event;
                    Principal principal = 
                        ev.getHttpServletRequest().getUserPrincipal();


                    Object[] args = new Object[]{ev, this};
                    SecurityUtil.doAsPrivilege("doFilterEvent", filter,
                            cometClassType, args, principal);


                    args = null;
                } else {  
                    filter.doFilterEvent(event, this);
                }


                /*support.fireInstanceEvent(InstanceEvent.AFTER_FILTER_EVENT,
                        filter, event);*/
            } catch (IOException e) {

View Full Code Here

        throws IOException, ServletException {


        // Call the next filter if there is one
        if (pos < n) {
            ApplicationFilterConfig filterConfig = filters[pos++];
            CometFilter filter = null;
            try {
                filter = (CometFilter) filterConfig.getFilter();
                // FIXME: No instance listener processing for events for now
                /*
                support.fireInstanceEvent(InstanceEvent.BEFORE_FILTER_EVENT,
                        filter, event);
                        */


                if( System.getSecurityManager() != null ) {
                    final CometEvent ev = event;
                    Principal principal = 
                        ev.getHttpServletRequest().getUserPrincipal();


                    Object[] args = new Object[]{ev, this};
                    SecurityUtil.doAsPrivilege
                        ("doFilterEvent", (Filter) filter, cometClassType, args);


                    args = null;
                } else {  
                    filter.doFilterEvent(event, this);
                }


                /*support.fireInstanceEvent(InstanceEvent.AFTER_FILTER_EVENT,
                        filter, event);*/
            } catch (IOException e) {

View Full Code Here

        throws IOException, ServletException {


        // Call the next filter if there is one
        if (pos < n) {
            ApplicationFilterConfig filterConfig = filters[pos++];
            CometFilter filter = null;
            try {
                filter = (CometFilter) filterConfig.getFilter();
                // FIXME: No instance listener processing for events for now
                /*
                support.fireInstanceEvent(InstanceEvent.BEFORE_FILTER_EVENT,
                        filter, event);
                        */


                if( Globals.IS_SECURITY_ENABLED ) {
                    final CometEvent ev = event;
                    Principal principal = 
                        ev.getHttpServletRequest().getUserPrincipal();


                    Object[] args = new Object[]{ev, this};
                    SecurityUtil.doAsPrivilege("doFilterEvent", filter,
                            cometClassType, args, principal);


                    args = null;
                } else {  
                    filter.doFilterEvent(event, this);
                }


                /*support.fireInstanceEvent(InstanceEvent.AFTER_FILTER_EVENT,
                        filter, event);*/
            } catch (IOException e) {

View Full Code Here

        throws IOException, ServletException {


        // Call the next filter if there is one
        if (pos < n) {
            ApplicationFilterConfig filterConfig = filters[pos++];
            CometFilter filter = null;
            try {
                filter = (CometFilter) filterConfig.getFilter();
                // FIXME: No instance listener processing for events for now
                /*
                support.fireInstanceEvent(InstanceEvent.BEFORE_FILTER_EVENT,
                        filter, event);
                        */


                if( System.getSecurityManager() != null ) {
                    final CometEvent ev = event;
                    Principal principal = 
                        ev.getHttpServletRequest().getUserPrincipal();


                    Object[] args = new Object[]{ev, this};
                    SecurityUtil.doAsPrivilege
                        ("doFilterEvent", (Filter) filter, cometClassType, args);


                    args = null;
                } else {  
                    filter.doFilterEvent(event, this);
                }


                /*support.fireInstanceEvent(InstanceEvent.AFTER_FILTER_EVENT,
                        filter, event);*/
            } catch (IOException e) {

View Full Code Here

        throws IOException, ServletException {


        // Call the next filter if there is one
        if (pos < n) {
            ApplicationFilterConfig filterConfig = filters[pos++];
            CometFilter filter = null;
            try {
                filter = (CometFilter) filterConfig.getFilter();
                // FIXME: No instance listener processing for events for now
                /*
                support.fireInstanceEvent(InstanceEvent.BEFORE_FILTER_EVENT,
                        filter, event);
                        */


                if( System.getSecurityManager() != null ) {
                    final CometEvent ev = event;
                    Principal principal = 
                        ev.getHttpServletRequest().getUserPrincipal();


                    Object[] args = new Object[]{ev, this};
                    SecurityUtil.doAsPrivilege
                        ("doFilterEvent", (Filter) filter, cometClassType, args);


                    args = null;
                } else {  
                    filter.doFilterEvent(event, this);
                }


                /*support.fireInstanceEvent(InstanceEvent.AFTER_FILTER_EVENT,
                        filter, event);*/
            } catch (IOException e) {

View Full Code Here

        throws IOException, ServletException {


        // Call the next filter if there is one
        if (pos < n) {
            ApplicationFilterConfig filterConfig = filters[pos++];
            CometFilter filter = null;
            try {
                filter = (CometFilter) filterConfig.getFilter();
                // FIXME: No instance listener processing for events for now
                /*
                support.fireInstanceEvent(InstanceEvent.BEFORE_FILTER_EVENT,
                        filter, event);
                        */


                if( Globals.IS_SECURITY_ENABLED ) {
                    final CometEvent ev = event;
                    Principal principal = 
                        ev.getHttpServletRequest().getUserPrincipal();


                    Object[] args = new Object[]{ev, this};
                    SecurityUtil.doAsPrivilege("doFilterEvent", filter,
                            cometClassType, args, principal);


                    args = null;
                } else {  
                    filter.doFilterEvent(event, this);
                }


                /*support.fireInstanceEvent(InstanceEvent.AFTER_FILTER_EVENT,
                        filter, event);*/
            } catch (IOException e) {

View Full Code Here

        throws IOException, ServletException {


        // Call the next filter if there is one
        if (pos < n) {
            ApplicationFilterConfig filterConfig = filters[pos++];
            CometFilter filter = null;
            try {
                filter = (CometFilter) filterConfig.getFilter();
                // FIXME: No instance listener processing for events for now
                /*
                support.fireInstanceEvent(InstanceEvent.BEFORE_FILTER_EVENT,
                        filter, event);
                        */


                if( Globals.IS_SECURITY_ENABLED ) {
                    final CometEvent ev = event;
                    Principal principal = 
                        ev.getHttpServletRequest().getUserPrincipal();


                    Object[] args = new Object[]{ev, this};
                    SecurityUtil.doAsPrivilege
                        ("doFilterEvent", (Filter) filter, cometClassType, args);


                    args = null;
                } else {  
                    filter.doFilterEvent(event, this);
                }


                /*support.fireInstanceEvent(InstanceEvent.AFTER_FILTER_EVENT,
                        filter, event);*/
            } catch (IOException e) {

View Full Code Here

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Related Classes of org.apache.catalina.CometFilter

org.apache.catalina.core.ApplicationFilterChain

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