Pcon trigger template.java

template.java

public class OrderTrigger {
    private final Map<Id, Order__c> oldMap;
    private final Map<Id, Order__c> newMap;
    private final List<Order__c> newObjs;
    private final Boolean isInsert;
    private final Boolean isUpdate;
    private final Boolean isDelete;
    private final Boolean isBulk;

    /**
    * The constructor
    *
    * @param xoldMap The old map from the trigger
    * @param xnewObj The list of new objects from the trigger
    * @param isBefore If the trigger is in before or after
    */
    public OrderTrigger(Map<Id, Order__c> xoldMap, List<Order__c> xnewObjs, Boolean isBefore) {
        oldMap = xoldMap;
        newObjs = xnewObjs;

        if (!isBefore && newObjs != null) {
            newMap = new Map<Id, Order__c>(newObjs);
        }

        isDelete = (((newObjs == null || newObjs.isEmpty()) && isBefore) || ((newMap == null || newMap.isEmpty()) && !isBefore));
        isUpdate = ! (isDelete || oldMap == null || oldMap.isEmpty());
        isInsert = ! (isDelete || isUpdate);
        isBulk = (newObjs != null && newObjs.size() > 1) ? true : false;
    }

    public void doAwesomeness() {
        List <Order__c> srfList = [
            select Status__c
            from Order__c
            where (
                    Status__c = 'Appraisal Contracted' or
                    Status__c = 'Completed'
                ) and
                Order__c.Id in :newMap.keySet()
        ];  

        Map<Id, Proposal__c> rfpMap = new Map<Id, Proposal__c>();
        for (Proposal__c prop: [
            select Name,
                Status__c,
                Order__c,
                Vendor__c,
                Vendor__r.Name
            from Proposal__c 
            where Status__c = 'Accepted' and
                Order__c = :srfList
        ]) {
                rfpMap.put(prop.Order__c, prop);
        }

        List Attachment attachList = new List<Attachment>();

        for (Order__c srf: srfList) {
            //Looking for newly contracted LOEs to create in Attachments
            if ( srf.Status__c == 'Appraisal Contracted' ) {
                //Create the PDF
                PageReference savePDF = new PageReference('/apex/vendorloe?rfpId='+rfp.Id+'&vendorId='+rfp.Vendor__c);
                Blob pdfBlob = savePDF.getContent();

                if (rfpMap.containsKey(srf.Id)) {
                    attachment Atch = new Attachment(
                        ParentId = rfpMap.get(srf.Id).Order__c,
                        Name = 'Letter Of Engagement - '+rfp.Vendor__r.Name+' - '+rfp.Name+'.pdf',
                        ContentType = 'pdf',
                        Body = pdfBlob
                    );

                    attachList.add(Atch);
                }
            }
        }

        if (attachList.isEmpty()) {
            insert attachList;
        }
    }

    /**
    * Method to initiate trigger logic
    *
    * @param oldMap The old map from the trigger
    * @param newObj The list of new objects from the trigger
    * @param isBefore If the trigger is in before or after
    */
    public static void processTrigger(Map<Id, Order__c> oldMap, List<Order__c> newObj, Boolean isBefore) {
        final OrderTrigger myTrigger = new OrderTrigger(oldMap, newObj, isBefore);

        if (!isBefore) {
            myTrigger.doAwesomeness();
        }
    }
}