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2025-01-16 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Development >
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This article is about how to implement OJB queries. Xiaobian thinks it is quite practical, so share it with everyone for reference. Let's follow Xiaobian and have a look.
OJB query
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Joints declared in path expressions (relationship.attribute) are automatically declared by OJB in criteria.
Dynamic processing. Path expressions support 1:1, 1: n, m: n relationships.
The following example finds all articles belonging to the Liquors product group. The relationship between articles and product groups is in the Article class
The productGroup relationship is established by:
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