本文整理汇总了Java中org.springframework.util.CollectionUtils.hasUniqueObject方法的典型用法代码示例。如果您正苦于以下问题：Java CollectionUtils.hasUniqueObject方法的具体用法？Java CollectionUtils.hasUniqueObject怎么用？Java CollectionUtils.hasUniqueObject使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.springframework.util.CollectionUtils的用法示例。
在下文中一共展示了CollectionUtils.hasUniqueObject方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: uniqueResult
import org.springframework.util.CollectionUtils; //导入方法依赖的package包/类
/**
* Return a unique result object from the given Collection.
* <p>Returns {@code null} if 0 result objects found;
* throws an exception if more than 1 instance found.
* @param results the result Collection (can be {@code null})
* @return the unique result object, or {@code null} if none
* @throws IncorrectResultSizeDataAccessException if more than one
* result object has been found in the given Collection
* @see org.springframework.util.CollectionUtils#hasUniqueObject
*/
public static <T> T uniqueResult(Collection<T> results) throws IncorrectResultSizeDataAccessException {
int size = (results != null ? results.size() : 0);
if (size == 0) {
return null;
}
if (!CollectionUtils.hasUniqueObject(results)) {
throw new IncorrectResultSizeDataAccessException(1, size);
}
return results.iterator().next();
}
示例2: requiredUniqueResult
import org.springframework.util.CollectionUtils; //导入方法依赖的package包/类
/**
* Return a unique result object from the given Collection.
* <p>Throws an exception if 0 or more than 1 instance found.
* @param results the result Collection (can be {@code null})
* @return the unique result object
* @throws IncorrectResultSizeDataAccessException if more than one
* result object has been found in the given Collection
* @throws EmptyResultDataAccessException if no result object at all
* has been found in the given Collection
* @see org.springframework.util.CollectionUtils#hasUniqueObject
*/
public static <T> T requiredUniqueResult(Collection<T> results) throws IncorrectResultSizeDataAccessException {
int size = (results != null ? results.size() : 0);
if (size == 0) {
throw new EmptyResultDataAccessException(1);
}
if (!CollectionUtils.hasUniqueObject(results)) {
throw new IncorrectResultSizeDataAccessException(1, size);
}
return results.iterator().next();
}