Struct SchemaBuilder 

pub struct SchemaBuilder { /* private fields */ }

Builder for creating schemas more ergonomically

Implementations

impl SchemaBuilder

pub fn new(table_name: impl Into<String>) -> Self

Create a new schema builder

pub fn from_schema(schema: &Schema) -> Self

Continue binding constraints against an existing schema.

pub fn column( self, name: impl Into<String>, data_type: DataType, nullable: bool, primary_key: bool, ) -> Self

Add a column

pub fn add(self, name: impl Into<String>, data_type: DataType) -> Self

Add a simple non-nullable column

pub fn add_nullable(self, name: impl Into<String>, data_type: DataType) -> Self

Add a nullable column

pub fn add_primary_key( self, name: impl Into<String>, data_type: DataType, ) -> Self

Add a primary key column

pub fn add_with_constraints( self, name: impl Into<String>, data_type: DataType, nullable: bool, primary_key: bool, auto_increment: bool, default_expr: Option<String>, check_expr: Option<String>, ) -> Self

Add a column with full constraints (default, check)

pub fn set_last_vector_dimensions(self, dims: u16) -> Self

Set vector dimensions on the last added column

pub fn set_last_decimal_parameters(self, precision: u8, scale: u8) -> Self

Set DECIMAL precision/scale on the last added column.

pub fn set_last_external_type( self, type_ref: ExternalTypeRef, sql_name: impl Into<String>, ) -> Self

pub fn set_last_default_value(self, default_value: Option<Value>) -> Self

Set pre-computed default value on the last added column.

pub fn column_index(&self, name: &str) -> Option<usize>

Find column index by name (case-insensitive)

pub fn is_column_nullable(&self, idx: usize) -> bool

Check if a column is nullable by index

pub fn column_data_type(&self, idx: usize) -> Option<DataType>

Return the declared type of a column already admitted by the builder.

pub fn column_logical_type(&self, idx: usize) -> Option<LogicalTypeRef>

pub fn column_definition(&self, idx: usize) -> Option<&SchemaColumn>

Inspect a column already admitted by the builder.

pub fn primary_key_column(&self) -> Option<(usize, &SchemaColumn)>

Return the single declared primary-key column, if present.

pub fn add_foreign_key(self, fk: ForeignKeyConstraint) -> Self

Add a foreign key constraint

pub fn add_table_check(self, expression: impl Into<String>) -> Self

Add a CHECK constraint evaluated against the complete row.

pub fn build(self) -> Schema

Build the schema