protected void processAnnotationWebFilter()

in java/org/apache/catalina/startup/ContextConfig.java [2559:2687]
120 lines of code
45 McCabe index (conditional complexity)

    protected void processAnnotationWebFilter(String className, AnnotationEntry ae, WebXml fragment) {
        String filterName = null;
        // must search for name s. Spec Servlet API 3.0 - 8.2.3.3.n.ii page 81
        List<ElementValuePair> evps = ae.getElementValuePairs();
        for (ElementValuePair evp : evps) {
            String name = evp.getNameString();
            if ("filterName".equals(name)) {
                filterName = evp.getValue().stringifyValue();
                break;
            }
        }
        if (filterName == null) {
            // class name is default filterName as annotation has no name!
            filterName = className;
        }
        FilterDef filterDef = fragment.getFilters().get(filterName);
        FilterMap filterMap = new FilterMap();

        boolean isWebXMLfilterDef;
        if (filterDef == null) {
            filterDef = new FilterDef();
            filterDef.setFilterName(filterName);
            filterDef.setFilterClass(className);
            isWebXMLfilterDef = false;
        } else {
            isWebXMLfilterDef = true;
        }

        boolean urlPatternsSet = false;
        boolean servletNamesSet = false;
        boolean dispatchTypesSet = false;
        String[] urlPatterns;

        for (ElementValuePair evp : evps) {
            String name = evp.getNameString();
            if ("value".equals(name) || "urlPatterns".equals(name)) {
                if (urlPatternsSet) {
                    throw new IllegalArgumentException(
                            sm.getString("contextConfig.urlPatternValue", "WebFilter", className));
                }
                urlPatterns = processAnnotationsStringArray(evp.getValue());
                urlPatternsSet = urlPatterns.length > 0;
                for (String urlPattern : urlPatterns) {
                    // % decoded (if required) using UTF-8
                    filterMap.addURLPattern(urlPattern);
                }
            } else if ("servletNames".equals(name)) {
                String[] servletNames = processAnnotationsStringArray(evp.getValue());
                servletNamesSet = servletNames.length > 0;
                for (String servletName : servletNames) {
                    filterMap.addServletName(servletName);
                }
            } else if ("dispatcherTypes".equals(name)) {
                String[] dispatcherTypes = processAnnotationsStringArray(evp.getValue());
                dispatchTypesSet = dispatcherTypes.length > 0;
                for (String dispatcherType : dispatcherTypes) {
                    filterMap.setDispatcher(dispatcherType);
                }
            } else if ("description".equals(name)) {
                if (filterDef.getDescription() == null) {
                    filterDef.setDescription(evp.getValue().stringifyValue());
                }
            } else if ("displayName".equals(name)) {
                if (filterDef.getDisplayName() == null) {
                    filterDef.setDisplayName(evp.getValue().stringifyValue());
                }
            } else if ("largeIcon".equals(name)) {
                if (filterDef.getLargeIcon() == null) {
                    filterDef.setLargeIcon(evp.getValue().stringifyValue());
                }
            } else if ("smallIcon".equals(name)) {
                if (filterDef.getSmallIcon() == null) {
                    filterDef.setSmallIcon(evp.getValue().stringifyValue());
                }
            } else if ("asyncSupported".equals(name)) {
                if (filterDef.getAsyncSupported() == null) {
                    filterDef.setAsyncSupported(evp.getValue().stringifyValue());
                }
            } else if ("initParams".equals(name)) {
                Map<String,String> initParams = processAnnotationWebInitParams(evp.getValue());
                if (isWebXMLfilterDef) {
                    Map<String,String> webXMLInitParams = filterDef.getParameterMap();
                    for (Map.Entry<String,String> entry : initParams.entrySet()) {
                        if (webXMLInitParams.get(entry.getKey()) == null) {
                            filterDef.addInitParameter(entry.getKey(), entry.getValue());
                        }
                    }
                } else {
                    for (Map.Entry<String,String> entry : initParams.entrySet()) {
                        filterDef.addInitParameter(entry.getKey(), entry.getValue());
                    }
                }

            }
        }
        if (!isWebXMLfilterDef) {
            fragment.addFilter(filterDef);
            if (urlPatternsSet || servletNamesSet) {
                filterMap.setFilterName(filterName);
                fragment.addFilterMapping(filterMap);
            }
        }
        if (urlPatternsSet || dispatchTypesSet) {
            Set<FilterMap> fmap = fragment.getFilterMappings();
            FilterMap descMap = null;
            for (FilterMap map : fmap) {
                if (filterName.equals(map.getFilterName())) {
                    descMap = map;
                    break;
                }
            }
            if (descMap != null) {
                String[] urlsPatterns = descMap.getURLPatterns();
                if (urlPatternsSet && (urlsPatterns == null || urlsPatterns.length == 0)) {
                    for (String urlPattern : filterMap.getURLPatterns()) {
                        // % decoded (if required) using UTF-8
                        descMap.addURLPattern(urlPattern);
                    }
                }
                String[] dispatcherNames = descMap.getDispatcherNames();
                if (dispatchTypesSet && (dispatcherNames == null || dispatcherNames.length == 0)) {
                    for (String dis : filterMap.getDispatcherNames()) {
                        descMap.setDispatcher(dis);
                    }
                }
            }
        }

    }