RowInBatchWriteRowRequest

Struct RowInBatchWriteRowRequest 

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pub struct RowInBatchWriteRowRequest {
    pub operation_type: OperationType,
    pub row: Row,
    pub row_condition: RowExistenceExpectation,
    pub column_condition: Option<Filter>,
    pub return_type: Option<ReturnType>,
    pub return_columns: HashSet<String>,
}
Expand description

在BatchWriteRow操作中,表示要插入、更新和删除的一行信息。

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§operation_type: OperationType

操作类型。

§row: Row

要写入的行

§row_condition: RowExistenceExpectation

在数据写入前是否进行存在性检查。取值范围如下:

  • Ignore(默认):不做行存在性检查。
  • ExpectExist :期望行存在。
  • ExpectNotExist :期望行不存在。
§column_condition: Option<Filter>

进行行存在性检查的时候,可以附加列过滤器

§return_type: Option<ReturnType>

返回数据设置。目前仅支持返回主键,主要用于主键列自增功能。

ReturnType

§return_columns: HashSet<String>

如果需要返回数据,可以指定要返回的列

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impl RowInBatchWriteRowRequest

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pub fn new() -> Self

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pub fn put_row(row: Row) -> Self

写入行

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pub fn update_row(row: Row) -> Self

更新行

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pub fn delete_row(row: Row) -> Self

删除行

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pub fn row(self, row: Row) -> Self

设置要写入的行数据

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pub fn row_condition(self, row_condition: RowExistenceExpectation) -> Self

设置行存在性检查

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pub fn column_condition(self, col_condition: Filter) -> Self

设置行存在性检查中的过滤器

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pub fn return_type(self, return_type: ReturnType) -> Self

设置返回值类型

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pub fn return_column(self, col_name: &str) -> Self

添加一个要返回的列

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pub fn return_columns( self, col_names: impl IntoIterator<Item = impl Into<String>>, ) -> Self

设置要返回的列

Trait Implementations§

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impl Clone for RowInBatchWriteRowRequest

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fn clone(&self) -> RowInBatchWriteRowRequest

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for RowInBatchWriteRowRequest

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for RowInBatchWriteRowRequest

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fn default() -> RowInBatchWriteRowRequest

Returns the “default value” for a type. Read more
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impl From<RowInBatchWriteRowRequest> for RowInBatchWriteRowRequest

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fn from(value: RowInBatchWriteRowRequest) -> Self

Converts to this type from the input type.

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