Struct SchemaParser 

pub struct SchemaParser { /* private fields */ }

Schema解析器

Implementations

impl SchemaParser

pub fn new() -> Self

创建新的Schema解析器

pub fn infer_from_json(&self, json_schema: &Value) -> Result<TableSchema>

从JSON Schema推断表结构

pub fn infer_data_type( &self, field_name: &str, schema: &Value, ) -> Result<DataType>

推断数据类型

pub fn infer_from_database_table( &self, table_info: &DatabaseTableInfo, ) -> Result<TableSchema>

从数据库表结构推断Schema

pub fn map_database_type(&self, db_type: &str) -> Result<DataType>

映射数据库类型到内部类型

pub fn add_type_mapping(&mut self, db_type: String, data_type: DataType)

添加自定义类型映射

pub fn add_pattern_rule( &mut self, pattern: &str, data_type: DataType, priority: u32, ) -> Result<()>

添加模式规则

Trait Implementations

impl Default for SchemaParser

fn default() -> Self

Returns the “default value” for a type.