default boolean saveBatch(Collection<T> entityList) { return this.saveBatch(entityList, 1000);什么意思
时间: 2024-03-07 18:52:25 浏览: 75
这段代码是Java语言中定义了一个saveBatch方法,这个方法是一个默认方法(default),也就是说这个方法可以被接口中的所有实现类所继承和使用。这个方法的返回值是一个boolean类型,表示保存操作是否成功。
这个方法接受一个名为entityList的参数,这个参数是一个泛型集合,表示要保存的实体对象集合。
在方法内部,它调用了另一个重载的saveBatch方法,这个方法有两个参数,第一个是实体对象集合,第二个是批次大小(batchSize),默认值是1000。这个方法的作用是将实体对象集合批量保存到数据库中,每批次保存的大小由batchSize参数决定。如果保存成功,则返回true,否则返回false。
相关问题
default boolean saveBatch(Collection<T> entityList)
As an AI language model, I cannot know the exact context of this method, but I can provide a general explanation of its possible functionality.
The "saveBatch" method is likely to be part of a software library or framework used for data manipulation and storage, such as an Object-Relational Mapping (ORM) tool or a database access layer. The method takes a collection of objects of type T and saves them in a persistent storage, such as a database table or a file system.
The return type of the method is a boolean value that indicates whether the batch save operation was successful or not. This can be useful for error handling and reporting, as well as for checking the status of the operation before proceeding with further processing.
The exact implementation of the "saveBatch" method may vary depending on the specific library or framework used. It may include additional parameters or options for configuring the save operation, such as transaction management, data validation, or performance optimization.
解释下default boolean saveBatch(Collection<T> entityList)
这个方法是MyBatis-Plus中的一个方法,用于批量插入或更新记录。其中,参数entityList是一个实体对象的集合,表示要插入或更新的记录。该方法会根据实体对象的主键是否为空来决定是插入还是更新操作。如果主键存在,则执行更新操作;如果主键不存在,则执行插入操作。同时,该方法会自动判断是使用插入语句还是更新语句来操作数据库,以提高性能。如果插入或更新成功,则返回true;否则返回false。
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