Example usage for javax.persistence.criteria CriteriaQuery getRestriction

Introduction

In this page you can find the example usage for javax.persistence.criteria CriteriaQuery getRestriction.

Prototype

Predicate getRestriction();

Source Link

Document

Return the predicate that corresponds to the where clause restriction(s), or null if no restrictions have been specified.

Usage

From source file:org.jboss.pressgang.ccms.filter.utils.JPAUtils.java

/**
 * Copy Criteria without Selection/*from  w  ww  .jav a  2 s . c o  m*/
 *
 * @param from source Criteria
 * @param to   destination Criteria
 */
public static void copyCriteriaNoSelection(CriteriaQuery<?> from, CriteriaQuery<?> to) {

    // Copy Roots
    for (Root<?> root : from.getRoots()) {
        Root<?> dest = to.from(root.getJavaType());
        dest.alias(getOrCreateAlias(root));
        copyJoins(root, dest);
    }

    if (from.getGroupList() != null)
        to.groupBy(from.getGroupList());
    to.distinct(from.isDistinct());
    if (from.getGroupRestriction() != null)
        to.having(from.getGroupRestriction());
    if (from.getRestriction() != null)
        to.where(from.getRestriction());
    if (from.getOrderList() != null)
        to.orderBy(from.getOrderList());
}

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

/**
 * @param rootPath//from ww  w  .  ja v  a2  s .c o m
 * @param query
 */
private void applyFilters(Root<T> rootPath, CriteriaQuery<?> query) {

    List<Predicate> predicates = new ArrayList<>();

    for (FieldFilter filter : filters) {
        Path<?> path;
        if (filter.getOptions().contains(FieldFilter.Option.OR_NULL)) {
            path = getCompoundJoinedPath(rootPath, filter.getField(), true);
        } else {
            path = getCompoundJoinedPath(rootPath, filter.getField(), false);
        }

        Predicate p = pb.getPredicate(path, filter);
        if (p != null) {
            predicates.add(p);
        }
    }
    // this does not work for Hibernate!!!
    if (query.getRestriction() != null) {
        predicates.add(query.getRestriction());
    }
    if (options.contains(Option.OR_FILTERS)) {
        query.where(cb.or(predicates.toArray(new Predicate[0])));
    } else {
        query.where(cb.and(predicates.toArray(new Predicate[0])));
    }

}

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