javaisnull()_JavaRestrictions.isNull方法代码示例

import org.hibernate.criterion.Restrictions; //导入方法依赖的package包/类

/**

* 按属性条件参数创建Criterion,辅助函数.

*

* &＃64;param propertyName

* String

* &＃64;param propertyValue

* Object

* &＃64;param matchType

* MatchType

* &＃64;return Criterion

*/

public static Criterion buildCriterion(String propertyName,

Object propertyValue, MatchType matchType) {

Assert.hasText(propertyName, "propertyName不能为空");

Criterion criterion &＃61; null;

// 根据MatchType构造criterion

switch (matchType) {

case EQ:

criterion &＃61; Restrictions.eq(propertyName, propertyValue);

break;

case NOT:

criterion &＃61; Restrictions.ne(propertyName, propertyValue);

break;

case LIKE:

criterion &＃61; Restrictions.like(propertyName, (String) propertyValue,

MatchMode.ANYWHERE);

break;

case LE:

criterion &＃61; Restrictions.le(propertyName, propertyValue);

break;

case LT:

criterion &＃61; Restrictions.lt(propertyName, propertyValue);

break;

case GE:

criterion &＃61; Restrictions.ge(propertyName, propertyValue);

break;

case GT:

criterion &＃61; Restrictions.gt(propertyName, propertyValue);

break;

case IN:

criterion &＃61; Restrictions.in(propertyName,

(Collection) propertyValue);

break;

case INL:

criterion &＃61; Restrictions.isNull(propertyName);

break;

case NNL:

criterion &＃61; Restrictions.isNotNull(propertyName);

break;

default:

criterion &＃61; Restrictions.eq(propertyName, propertyValue);

break;

}

return criterion;

}