technology/java-spring-boot/src/main/java/org/acme/schooltimetabling/solver/TimeTableConstraintProvider.java [53:61]:
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    Constraint studentGroupConflict(ConstraintFactory constraintFactory) {
        // A student can attend at most one lesson at the same time.
        return constraintFactory
                .forEachUniquePair(Lesson.class,
                        Joiners.equal(Lesson::getTimeslot),
                        Joiners.equal(Lesson::getStudentGroup))
                .penalize(HardSoftScore.ONE_HARD)
                .asConstraint("Student group conflict");
    }
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technology/kubernetes/common/src/main/java/org/acme/common/solver/TimeTableConstraintProvider.java [52:60]:
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    Constraint studentGroupConflict(ConstraintFactory constraintFactory) {
        // A student can attend at most one lesson at the same time.
        return constraintFactory
                .forEachUniquePair(Lesson.class,
                        Joiners.equal(Lesson::getTimeslot),
                        Joiners.equal(Lesson::getStudentGroup))
                .penalize(HardSoftScore.ONE_HARD)
                .asConstraint("Student group conflict");
    }
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technology/java-activemq-quarkus/solver/src/main/java/org/acme/schooltimetabling/solver/TimeTableConstraintProvider.java [52:60]:
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    Constraint studentGroupConflict(ConstraintFactory constraintFactory) {
        // A student can attend at most one lesson at the same time.
        return constraintFactory
                .forEachUniquePair(Lesson.class,
                        Joiners.equal(Lesson::getTimeslot),
                        Joiners.equal(Lesson::getStudentGroup))
                .penalize(HardSoftScore.ONE_HARD)
                .asConstraint("Student group conflict");
    }
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use-cases/school-timetabling/src/main/java/org/acme/schooltimetabling/solver/TimeTableConstraintProvider.java [52:60]:
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    Constraint studentGroupConflict(ConstraintFactory constraintFactory) {
        // A student can attend at most one lesson at the same time.
        return constraintFactory
                .forEachUniquePair(Lesson.class,
                        Joiners.equal(Lesson::getTimeslot),
                        Joiners.equal(Lesson::getStudentGroup))
                .penalize(HardSoftScore.ONE_HARD)
                .asConstraint("Student group conflict");
    }
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hello-world/src/main/java/org/acme/schooltimetabling/solver/TimeTableConstraintProvider.java [52:60]:
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    Constraint studentGroupConflict(ConstraintFactory constraintFactory) {
        // A student can attend at most one lesson at the same time.
        return constraintFactory
                .forEachUniquePair(Lesson.class,
                        Joiners.equal(Lesson::getTimeslot),
                        Joiners.equal(Lesson::getStudentGroup))
                .penalize(HardSoftScore.ONE_HARD)
                .asConstraint("Student group conflict");
    }
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