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Using exists in subquery #1708

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Sherzodbek-Muhammadiev opened this issue Mar 20, 2023 · 1 comment · May be fixed by #1631
Open

Using exists in subquery #1708

Sherzodbek-Muhammadiev opened this issue Mar 20, 2023 · 1 comment · May be fixed by #1631
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@joc-a

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@Sherzodbek-Muhammadiev
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java.lang.ClassCastException: class java.lang.Integer cannot be cast to class java.lang.Boolean (java.lang.Integer and java.lang.Boolean are in module java.base of loader 'bootstrap')

val isOpenSubQuery = StudentLessonEntity
                .slice(StudentLessonEntity.id)
                .select {
                (StudentLessonEntity.studentId eq studentId and
                        (StudentLessonEntity.courseId eq courseId) and
                        (StudentLessonEntity.lessonId eq LessonEntity.id))
            }


            val isOpen = exists(isOpenSubQuery).alias("is_open")

and I run query:

(CourseEntity innerJoin LessonPackageEntity innerJoin LessonEntity)
                .slice(LessonEntity.id, LessonEntity.name, isOpen, solvedCount, taskCount)
                .select { CourseEntity.id eq courseId }
                .map { Mapper.run { it.toStudentLessonData(solvedCount, taskCount, isOpen) } }

Mapper:

 fun ResultRow.toStudentLessonData(
        solvedCount: Expression<Int>,
        taskCount: Expression<Int>,
        isOpen: Expression<Boolean>,
    ) = StudentLessonData(
        id = this[LessonEntity.id].value,
        name = this[LessonEntity.name],
        solvedCount = this[solvedCount],
        taskCount = this[taskCount],
        isLocked = this[isOpen]
    )

And this line isLocked = this[isOpen] happened crash
@Sherzodbek-Muhammadiev
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Now, I am using my custom function exits2 as temporary solution:

class exists2(
    val query: AbstractQuery<*>
) : Op<Int>() {
    override fun toQueryBuilder(queryBuilder: QueryBuilder): Unit = queryBuilder {
        append("EXISTS (")
        query.prepareSQL(this)
        append(")")
    }
}

@joc-a joc-a linked a pull request Jul 19, 2023 that will close this issue
fix: Crash in use of aliased OpBoolean #1631
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@joc-a joc-a self-assigned this Jul 19, 2023
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fix: Crash in use of aliased OpBoolean daemon23/Exposed
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@Sherzodbek-Muhammadiev @joc-a