Get Record Type ID By Developer Name

GetRecordTypeId.cls

// Returns a map of active, user-available RecordType IDs for a given SObjectType,
    // keyed by each RecordType's unique, unchanging DeveloperName 
    public static Map<String, Id> getRecordTypeMapForObjectGeneric(Schema.SObjectType token) {
        // Do we already have a result? 
        Map<String, Id> mapRecordTypes = rtypesCache.get(token);
        // If not, build a map of RecordTypeIds keyed by DeveloperName
        if (mapRecordTypes == null) {
            mapRecordTypes = new Map<String, Id>();
            rtypesCache.put(token,mapRecordTypes);
        } else {
        // If we do, return our cached result immediately!
        return mapRecordTypes;
        }

        // Get the Describe Result
        Schema.DescribeSObjectResult obj = token.getDescribe();


        //Check if we already queried all recordtypes.
        if (results == null || results.isEmpty()) {
        // Obtain ALL Active Record Types
        // (We will filter out the Record Types that are unavailable
        // to the Running User using Schema information)
            String soql = 'SELECT Id, Name, DeveloperName, sObjectType FROM RecordType WHERE IsActive = TRUE';
            try {
                results = Database.query(soql);
            } catch (Exception ex) {
                results = new List<SObject>();
            }
        }

        // Obtain the RecordTypeInfos for this SObjectType token
        Map<Id,Schema.RecordTypeInfo> recordTypeInfos = obj.getRecordTypeInfosByID();
        // Loop through all of the Record Types we found,
        // and weed out those that are unavailable to the Running User
        for (SObject rt : results) { 
            if (recordTypeInfos.get(rt.Id) != null) {
                if (recordTypeInfos.get(rt.Id).isAvailable()) {
                    // This RecordType IS available to the running user,
                    //      so add it to our map of RecordTypeIds by DeveloperName
                    mapRecordTypes.put(String.valueOf(rt.get('DeveloperName')),rt.Id);
                }
                else {
                    System.debug('The record type ' + rt.get('DeveloperName') + ' for object ' + rt.get('sObjectType') + ' is not availiable for the user.');
                }
            }
        }

        return mapRecordTypes;
    }