global class UpdateFSEApplyForRepairTimeBatch implements Database.Batchable<sObject> {
    public String query;
    public List<String> ids;
    public Integer year;

    global UpdateFSEApplyForRepairTimeBatch(List<String> tempIds) {
        this.query = query;
        this.ids = tempIds;
    }

    global UpdateFSEApplyForRepairTimeBatch() {
        this.query = query;
    }

    global UpdateFSEApplyForRepairTimeBatch(Integer tempyear) {
        this.query = query;
        this.year = tempyear;
    }

    global Database.QueryLocator start(Database.BatchableContext bc) {
        query = 'SELECT Id,FSE_ApplyForRepair_time__c,SAP_Transfer_time__c FROM Repair__c ';
        if (ids!= null && ids.size() > 0) {
            query += ' where Id in : ids';   
        }else if (year != null) {
            Date startDay = Date.newInstance(year,4,1);
            Date tempDay = Date.newInstance(year+1,4, 1);
            Date endDay = tempDay.addDays(-1);
            query += ' WHERE SAP_Transfer_day__c >= :startDay and SAP_Transfer_day__c <= :endDay';
            query += ' and SAP_Transfer_time__c != null and FSE_ApplyForRepair_time__c = null';
        } else{
            query += ' WHERE SAP_Transfer_time__c != null and FSE_ApplyForRepair_time__c = null';
        }
        return Database.getQueryLocator(query);
    }

    global void execute(Database.BatchableContext BC, list<Repair__c> scope) {
        if (scope!=null && scope.size() > 0) {
            for (Repair__c rc : scope) {
                rc.FSE_ApplyForRepair_time__c = rc.SAP_Transfer_time__c;
            }
            Database.update(scope);
        }

    }

    global void finish(Database.BatchableContext BC) {

    }
}