Most importantly, the r: ranking-scheme element's domain attribute binds the scheme to a specific ranking domain.
最重要的是，r： ranking - scheme元素的domain属性将方案绑定到特定的等级域。
The value of the domain attribute on the r:ranking-scheme and r:rank elements is the IRI that identifies the domain.
ranking-scheme 和 r:rank 元素上的域属性的值是识别域的 IRI。
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.
foreach语句，不是设置来自sql结果集的域属性值，而是将字符串TODO： set from sql result填塞到字段值数组的每个元素。
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