Example usage for javax.persistence.criteria SetJoin get

Introduction

In this page you can find the example usage for javax.persistence.criteria SetJoin get.

Prototype

<Y> Path<Y> get(SingularAttribute<? super X, Y> attribute);

Source Link

Document

Create a path corresponding to the referenced single-valued attribute.

Usage

From source file:org.ngrinder.perftest.repository.TagSpecification.java

/**
 * Get the {@link Specification} which checks if the tag has corresponding perfTests.
 *
 * @return {@link Specification}/*from  ww w.  j av  a2 s  . c  o m*/
 */
public static Specification<Tag> hasPerfTest() {
    return new Specification<Tag>() {
        @Override
        public Predicate toPredicate(Root<Tag> root, CriteriaQuery<?> query, CriteriaBuilder cb) {
            SetJoin<Object, Object> join = root.joinSet("perfTests");
            query.groupBy(root.get("id"));
            return join.get("id").isNotNull();
        }
    };
}

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From source file:org.ngrinder.perftest.repository.PerfTestSpecification.java

/**
 * Get the {@link Specification} checking if the {@link PerfTest#getTags()} has the given tagValue.
 *
 * @param tagValue tagValue/*from   w ww  .  ja v  a2  s  . com*/
 * @return {@link Specification}
 */
public static Specification<PerfTest> hasTag(final String tagValue) {
    return new Specification<PerfTest>() {
        @Override
        public Predicate toPredicate(Root<PerfTest> root, CriteriaQuery<?> query, CriteriaBuilder cb) {
            SetJoin<Object, Object> join = root.joinSet("tags");
            return cb.equal(join.get("tagValue"), tagValue);
        }
    };
}

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