How to Combine Multiple And and Or Operators in Spring Data JPA Query Method Names?

Combining Multiple And and Or Operators in Query Method Names

Spring Data JPA simplifies query building with its user-friendly methods. However, users may encounter challenges when attempting to combine both And and Or operators in a single method name.

A common example of such a scenario is:

<code class="java"> findByPlan_PlanTypeInAndSetupStepIsNullOrStepupStepIs(...)</code>

Here, the intention is to create a query that combines the following conditions:

• findByPlan_PlanTypeInAndSetupStepIsNull
• findByPlan_PlanTypeInAndStepupStepIs(...)

However, when the query is translated, the result is:

<code class="sql">[(exp1 and exp2) or (exp3)]</code>

rather than the intended:

<code class="sql">(exp1) and (exp2 or exp3)</code>

To address this issue, Spring Data JPA provides a workaround based on logical equivalence:

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

Therefore, the method name can be modified to:

<code class="java">findByPlan_PlanTypeInAndSetupStepIsNullOrPlan_PlanTypeInAndStepupStepIs(...)</code>

This ensures that the query will be translated correctly, combining the conditions with the desired logical operations. By understanding this equivalence, developers can overcome the challenge of combining multiple And and Or operators in Spring Data JPA query method names.

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