過濾表示式與過濾物件
過濾器表示式不能包含過濾器物件。這是非常重要的。如果你決定使用 Filter Expression 形成過濾器,則使用字串陣列陣列。以下語法錯誤 :
// WRONG!!!
var f1 = search.createFilter({
name: 'mainline',
operator: search.Operator.IS,
values: 'T'
});
var f2 = search.createFilter({
name: 'type',
operator: search.Operator.ANYOF,
values: ['VendBill','VendCred']
});
// here you will receive an error message
var s = search.create({
type : 'transaction',
filters : [ f1, 'and', f2 ] // f1,f2 are Filter Objects, instead of string arrays
});
相反,使用正確的 :
// CORRECT!!!
var f1 = ['mainline', search.Operator.IS, 'T'];
var f2 = ['type', search.Operator.ANYOF, ['VendBill','VendCred'] ];
var s = search.create({
type : 'transaction',
filters : [ f1, 'and', f2 ]
});
或者如果你想繼續使用 Filter Objects 方法,傳遞一組過濾器物件,並忘記運算子’AND’,‘OR’,‘NOT’。它將始終是 AND
// correct, but not useful
var f1 = search.createFilter({
name: 'mainline',
operator: search.Operator.IS,
values: 'T'
});
var f2 = search.createFilter({
name: 'type',
operator: search.Operator.ANYOF,
values: ['VendBill','VendCred']
});
var s = search.create({
type : 'transaction',
filters : [ f1, f2 ] // here you have array of Filter Objects,
// filtering only when all of them are TRUE
});