Example usage for javax.persistence.criteria Join getJoinType

Introduction

In this page you can find the example usage for javax.persistence.criteria Join getJoinType.

Prototype

JoinType getJoinType();

Source Link

Document

Return the join type.

Usage

From source file:org.jdal.dao.jpa.JpaUtils.java

/**
 * Find Joined Root of type clazz/*from   ww w .j  a  va2s  .c  o  m*/
 * @param <T>
 * @param query the criteria query
 * @param rootClass the root class
 * @param joinClass the join class
 * @return the Join
 */
@SuppressWarnings("unchecked")
public static <T, K> Join<T, K> findJoinedType(CriteriaQuery<T> query, Class<T> rootClass, Class<K> joinClass) {
    Root<T> root = findRoot(query, rootClass);
    Join<T, K> join = null;
    for (Join<T, ?> j : root.getJoins()) {
        if (j.getJoinType().equals(joinClass)) {
            join = (Join<T, K>) j;
        }
    }
    return join;
}

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From source file:org.jdal.dao.jpa.JpaUtils.java

/**
 * Copy Joins//from w  w  w .  jav  a  2 s .  co m
 * @param from source Join
 * @param to destination Join
 */
public static void copyJoins(From<?, ?> from, From<?, ?> to) {
    for (Join<?, ?> j : from.getJoins()) {
        Join<?, ?> toJoin = to.join(j.getAttribute().getName(), j.getJoinType());
        toJoin.alias(getOrCreateAlias(j));

        copyJoins(j, toJoin);
    }

    for (Fetch<?, ?> f : from.getFetches()) {
        Fetch<?, ?> toFetch = to.fetch(f.getAttribute().getName());
        copyFetches(f, toFetch);

    }
}

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From source file:com.zero.dao.impl.BaseDaoImpl.java

private void copyJoins(From<?, ?> from, From<?, ?> to) {
    for (Join<?, ?> join : from.getJoins()) {
        Join<?, ?> toJoin = to.join(join.getAttribute().getName(), join.getJoinType());
        toJoin.alias(getAlias(join));/*from  w  w w .j  a  v  a2  s .c  o m*/
        copyJoins(join, toJoin);
    }
    for (Fetch<?, ?> fetch : from.getFetches()) {
        Fetch<?, ?> toFetch = to.fetch(fetch.getAttribute().getName());
        copyFetches(fetch, toFetch);
    }
}

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From source file:ru.savvy.jpafilterbuilder.FilterCriteriaBuilder.java

private Join reuseJoin(From<?, ?> path, String fieldName, boolean outer) {
    for (Join join : path.getJoins()) {
        if (join.getAttribute().getName().equals(fieldName)) {
            if ((join.getJoinType() == JoinType.LEFT) == outer) {
                logger.debug("Reusing existing join for field " + fieldName);
                return join;
            }/*  www.j a  v a  2  s  .  co m*/
        }
    }
    return outer ? path.join(fieldName, JoinType.LEFT) : path.join(fieldName);
}

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