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jadsitt/RestDispatcher.cls

Forked from cdeckert/RestDispatcher.cls
Created January 21, 2023 05:55
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  1. @cdeckert cdeckert created this gist Aug 26, 2014.
    116 changes: 116 additions & 0 deletions RestDispatcher.cls
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,116 @@
    /**
    * @description URL dispatcher
    */
    @RestResource(urlMapping = '/*')
    global class RestDispatcher
    {
    // dispatchables
    static Map<RequestType, List<Dispatchable>> dispatchables;
    // requestTypes
    enum RequestType {HTTPGET, HTTPPOST, HTTPPUT, HTTPDELETE, HTTPPATCH}
    // static constructor
    static
    {
    dispatchables = new Map <RequestType, List<Dispatchable>>
    {
    RequestType.HTTPGET => new List<Dispatchable>(),
    RequestType.HTTPPOST => new List<Dispatchable>(),
    RequestType.HTTPPUT => new List<Dispatchable>(),
    RequestType.HTTPDELETE => new List<Dispatchable>()
    };

    // register your class here
    }
    /**
    * @description HTTP methods
    */
    @HTTPGet
    global static void doGET()
    {
    execute(RequestType.HTTPGET);
    }

    @HTTPPOST
    global static void doPOST()
    {
    execute(RequestType.HTTPPOST);
    }
    @HTTPPATCH
    global static void doPATCH()
    {
    execute(RequestType.HTTPPATCH);
    }
    @HTTPPUT
    global static void doPUT()
    {
    execute(RequestType.HTTPPUT);
    }
    @HTTPDELETE
    global static void doDELETE()
    {
    execute(RequestType.HTTPDELETE);
    }






    private static boolean match(String requestURI, String dispachableURI)
    {
    List<String> dispachableURIList = dispachableURI.split('/');
    List<String> requestURIList = requestURI.split('/');
    if (dispachableURIList.size() != requestURIList.size())
    {
    return false;
    }
    else
    {
    for (Integer i = 0; i < dispachableURIList.size(); i++)
    {
    if (!dispachableURIList.get(i).contains('{') && dispachableURIList.get(i) != requestURIList.get(i))
    {
    return false;
    }
    }
    }
    return true;
    }

    private static Map<String, String> getParameters(String requestURI, String dispachableURI)
    {
    List<String> dispachableURIList = dispachableURI.split('/');
    List<String> requestURIList = requestURI.split('/');
    Map<String, String> result = new Map<String, String>();
    for (Integer i = 0; i < dispachableURIList.size(); i++)
    {
    if (dispachableURIList.get(i).contains('{'))
    {
    result.put(dispachableURIList.get(i).subString(1, dispachableURIList.get(i).length()), requestURIList.get(i));
    }
    }
    return result;
    }

    private static void execute(RequestType requestType)
    {
    RestRequest request = RestContext.request;
    for (Dispatchable d : dispatchables.get(requestType))
    {
    if (match(RestContext.request.requestURI, d.getURIMapping()))
    {
    d.execute(getParameters(RestContext.request.requestURI, d.getURIMapping()));
    }
    }
    }


    /**
    * @description dispatchable
    */
    global interface Dispatchable
    {
    String getURIMapping(); // e.g. /teams/{teamNumber}/members/{memberId}
    void execute(Map<String, String> parameters);
    }
    }