public ActionMapping getMapping()

in core/src/main/java/org/apache/struts2/dispatcher/mapper/Restful2ActionMapper.java [60:166]
78 lines of code
29 McCabe index (conditional complexity)

    public ActionMapping getMapping(HttpServletRequest request, ConfigurationManager configManager) {
       if (!isSlashesInActionNames()) {
            throw new IllegalStateException("This action mapper requires the setting 'slashesInActionNames' to be set to 'true'");
       }
        ActionMapping mapping = super.getMapping(request, configManager);

        if (mapping == null) {
            return null;
        }

        String actionName = mapping.getName();
        String id = null;

        // Only try something if the action name is specified
        if (StringUtils.isNotBlank(actionName)) {

            int lastSlashPos = actionName.lastIndexOf('/');
            if (lastSlashPos > -1) {
                id = actionName.substring(lastSlashPos+1);
            }

            // If a method hasn't been explicitly named, try to guess using ReST-style patterns
            if (mapping.getMethod() == null) {

                if (lastSlashPos == actionName.length() -1) {

                    // Index e.g. foo/
                    if (isGet(request)) {
                        mapping.setMethod("index");

                    // Creating a new entry on POST e.g. foo/
                    } else if (isPost(request)) {
                        mapping.setMethod("create");
                    }

                } else if (lastSlashPos > -1) {
                    // Viewing the form to create a new item e.g. foo/new
                    if (isGet(request) && "new".equals(id)) {
                        mapping.setMethod("editNew");

                    // Viewing an item e.g. foo/1
                    } else if (isGet(request)) {
                        mapping.setMethod("view");

                    // Removing an item e.g. foo/1
                    } else if (isDelete(request)) {
                        mapping.setMethod("remove");

                    // Updating an item e.g. foo/1
                    }  else if (isPut(request)) {
                        mapping.setMethod("update");
                    }

                }

                if (idParameterName != null && lastSlashPos > -1) {
                    actionName = actionName.substring(0, lastSlashPos);
                }
            }

            if (idParameterName != null && id != null) {
                if (mapping.getParams() == null) {
                    mapping.setParams(new HashMap<>());
                }
                mapping.getParams().put(idParameterName, id);
            }

            // Try to determine parameters from the url before the action name
            int actionSlashPos = actionName.lastIndexOf('/', lastSlashPos - 1);
            if (actionSlashPos > 0 && actionSlashPos < lastSlashPos) {
                String params = actionName.substring(0, actionSlashPos);
                HashMap<String, String> parameters = new HashMap<>();
                try {
                    StringTokenizer st = new StringTokenizer(params, "/");
                    boolean isNameTok = true;
                    String paramName = null;
                    String paramValue;

                    while (st.hasMoreTokens()) {
                        if (isNameTok) {
                            paramName = decoder.decode(st.nextToken(), "UTF-8", false);
                            isNameTok = false;
                        } else {
                            paramValue = decoder.decode(st.nextToken(), "UTF-8", false);

                            if (paramName != null && !paramName.isEmpty()) {
                                parameters.put(paramName, paramValue);
                            }

                            isNameTok = true;
                        }
                    }
                    if (!parameters.isEmpty()) {
                        if (mapping.getParams() == null) {
                            mapping.setParams(new HashMap<>());
                        }
                        mapping.getParams().putAll(parameters);
                    }
                } catch (Exception e) {
                    LOG.warn("Unable to determine parameters from the url", e);
                }
                mapping.setName(actionName.substring(actionSlashPos+1));
            }
        }

        return mapping;
    }