Method getDatabaseFile

src/java/simpledb/common/Catalog.java:179–186

Returns the DbFile that can be used to read the contents of the specified table. @param tableid The id of the table, as specified by the DbFile.getId() function passed to addTable

(int tableid)

     *     function passed to addTable
     */
    public DbFile getDatabaseFile(int tableid) throws NoSuchElementException {
        // some code goes here
        Table table = this.getTableById(tableid);
        if(table!=null){
            return table.getFile();
        }
        return null;
    }

    public String getPrimaryKey(int tableid) {
        // some code goes here