string name;"/>

关于java:将条件查询与休眠一起使用时,如何将条件“或”在一起?

关于java:将条件查询与休眠一起使用时,如何将条件“或”在一起?

How do you “OR” criteria together when using a criteria query with hibernate?

我正在尝试使用休眠条件查询在三个字段上做一个基本的"或"。

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class Whatever{
 string name;
 string address;
 string phoneNumber;
}

我想建立一个条件查询,其中我的搜索字符串可以匹配"名称"或"地址"或" phoneNumber"。


您要使用Restrictions.disjuntion()。 像这样

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session.createCriteria(Whatever.class)
    .add(Restrictions.disjunction()
        .add(Restrictions.eq("name", queryString))
        .add(Restrictions.eq("address", queryString))
        .add(Restrictions.eq("phoneNumber", queryString))
    );

请参阅此处的Hibernate文档。


假设您要进行休眠会话,则应执行以下操作:

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Criteria c = session.createCriteria(Whatever.class);
Disjunction or = Restrictions.disjunction();
or.add(Restrictions.eq("name",searchString));
or.add(Restrictions.eq("address",searchString));
or.add(Restrictions.eq("phoneNumber",searchString));
c.add(or);


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    //Expression :  (c1 AND c2) OR (c3)      


     Criteria criteria = session.createCriteria(Employee.class);

      Criterion c1 = Restrictions.like("name","%e%");
      Criterion c2 = Restrictions.ge("salary", 10000.00);
      Criterion c3 = Restrictions.like("name","%YYY%");
      Criterion c4 = Restrictions.or(Restrictions.and(c1, c2), c3);
      criteria.add(c4);

//(c1 OR c2)AND c3或任何复杂的表达式都可以做同样的事情。


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//Expression :  (c1 AND c2) OR (c3)      


 Criteria criteria = session.createCriteria(Employee.class);

  Criterion c1 = Restrictions.like("name","%e%");
  Criterion c2 = Restrictions.ge("salary", 10000.00);
  Criterion c3 = Restrictions.like("name","%YYY%");
  Criterion c4 = Restrictions.or(Restrictions.and(c1, c2), c3);
  criteria.add(c4);

  //Same thing can be done for (c1 OR c2) AND c3, or any complex expression.

万一有人为NHibernate遇到同样的问题,以防万一,

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ICriteria c = session.CreateCriteria(typeof (Whatever))
    .Add(Expression.Disjunction()
        .Add(Expression.Eq("name", searchString))
        .Add(Expression.Eq("address", searchString))
        .Add(Expression.Eq("phoneNumber", searchString)));

这对我来说,对于OR条件是起作用的,对于IN条件也是如此,而不是在此讨论中投票最多的答案:

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criteria.add( Restrictions.or(
                    Restrictions.eq(ch.getPath(ch.propertyResolver().getXXXX()),"OR_STRING"),
                        Restrictions.in(ch.getPath(ch.propertyResolver().getYYYY()), new String[]{"AA","BB","CC"})
                    ));

结果查询:

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  and (
            this_.XXXX=?
            or this_.YYYY in (
                ?, ?, ?
            )
        )

可以使用或/和在不同级别的查询中应用条件
使用析取

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Criteria query = getCriteria("ENTITY_NAME");
query.add(Restrictions.ne("column Name", current _value));

Disjunction disjunction = Restrictions.disjunction();

if (param_1 != null)
    disjunction.add(Restrictions.or(Restrictions.eq("column Name", param1)));

if (param_2 != null)
    disjunction.add(Restrictions.or(Restrictions.eq("column Name", param_2)));

if (param_3 != null)
    disjunction.add(Restrictions.or(Restrictions.eq("column Name", param_3)));
if (param_4 != null && param_5 != null)
    disjunction.add(Restrictions.or(Restrictions.and(Restrictions.eq("column Name", param_4 ), Restrictions.eq("column Name", param_5 ))));

if (disjunction.conditions() != null && disjunction.conditions().iterator().hasNext())
    query.add(Restrictions.and(disjunction));

return query.list();


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