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RowBuilder

Struct RowBuilder 

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pub struct RowBuilder { /* private fields */ }
Expand description

A builder for constructing a Row outside of a query.

This is primarily intended for unit tests that exercise functions taking a Row or &[Row] without a live database connection. Obtain one via Row::builder.

Each column call appends a column’s metadata together with its value, so the column count and the value count can never drift out of sync. The row is finished with build.

§Example

use tiberius::{ColumnData, ColumnType, Row};

let row = Row::builder()
    .column("id", ColumnType::Int4, ColumnData::I32(Some(1)))
    .column(
        "name",
        ColumnType::NVarchar,
        ColumnData::String(Some("Alice".into())),
    )
    .column("age", ColumnType::Int4, ColumnData::I32(None))
    .build();

assert_eq!(Some(1), row.get::<i32, _>("id"));
assert_eq!(Some("Alice"), row.get::<&str, _>(1));
assert_eq!(None, row.get::<i32, _>("age"));

Implementations§

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impl RowBuilder

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pub fn column( self, name: impl Into<String>, column_type: ColumnType, value: ColumnData<'static>, ) -> Self

Appends a column and its value to the row being built.

name is the column name used for by-name lookups, column_type is the ColumnType reported by Column::column_type, and value holds the cell’s ColumnData. Columns keep the order in which they are added.

column_type is stored as-is and is not checked against value: the value accessors (Row::get/Row::try_get) dispatch on the ColumnData variant alone, so a mismatched column_type only affects what Column::column_type reports. Keeping the two consistent is the caller’s responsibility.

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pub fn result_index(self, result_index: usize) -> Self

Sets the result-set index reported by Row::result_index.

Defaults to 0 when not called.

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pub fn build(self) -> Row

Consumes the builder and returns the assembled Row.

Trait Implementations§

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impl Debug for RowBuilder

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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 RowBuilder

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fn default() -> Self

Returns the “default value” for a type. Read more

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