Can Spring Data JPA Handle Complex Queries with Combined \'And\' and \'Or\' Operators?

Creating Complex Queries with Combined Logical Operators in Spring Data JPA

Enhancing the capabilities of Spring Data JPA's intuitive query building, this question grapples with combining both "And" and "Or" operators through method names. To achieve this, the query method is designed as follows:

findByPlan_PlanTypeInAndSetupStepIsNullOrStepupStepIs(...)

However, the resulting query interprets the expression as [(exp1 and exp2) or (exp3)], conflicting with the intended ](exp1) and (exp2 or exp3)].

Can Spring Data JPA accommodate such complex queries?

Solution: Leverage Logical Equivalency

While it's prudent to avoid overly lengthy and incomprehensible method names, the desired result can be achieved by leveraging the following logical equivalence:

A /\ (B \/ C) <=> (A /\ B) \/ (A /\ C)
A and (B or C) <=> (A and B) or (A and C)

Applying this to the example:

findByPlan_PlanTypeInAndSetupStepIsNullOrPlan_PlanTypeInAndStepupStepIs(...)

By separating the expressions into Plan_PlanTypeInAndSetupStepIsNull and Plan_PlanTypeInAndStepupStepIs, we can construct the correct query:

(exp1) and (exp2 or exp3)

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