The array is filled using a series of foreach statements that pick out the root rule, master rules, and the rules that the masters refer to.
foreach语句，不是设置来自sql结果集的域属*值，而是将字符串TODO：setfromsqlresult填塞到字段值数组的每个元素。
The foreach statement, instead of setting domain attribute values from a SQL result set, stuffs the string TODO: set from SQL result into each element of the array of field values.
