top.openyuan.jpa.specification.handler.PredicateHandler Maven / Gradle / Ivy
package top.openyuan.jpa.specification.handler;
import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.From;
import javax.persistence.criteria.Predicate;
/**
* ejpa 中用来动态构造 {@link Predicate} 条件的函数式接口.
*
* @author lzy
* @since v1.0.0
*/
@FunctionalInterface
public interface PredicateHandler {
/**
* 根据字段、值等参数来构造 {@link Predicate} 条件实例.
*
* @param criteriaBuilder {@link CriteriaBuilder} 实例
* @param from {@link From} 实例
* @param fieldName 属性字段名称
* @param value 属性条件对应的值
* @return {@link Predicate} 实例
*/
Predicate buildPredicate(CriteriaBuilder criteriaBuilder, From from, String fieldName, Object value);
}