SchemaService

Struct SchemaService 

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pub struct SchemaService;
Expand description

Schema 服务

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impl SchemaService

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pub async fn list_schemas( db: &DatabaseConnection, ) -> Result<Vec<SchemaInfo>, SchemaError>

获取所有 Schema 列表(PostgreSQL)

§注意

此方法需要 PostgreSQL 数据库,并且需要能够执行查询操作。 由于 SeaORM 的 DatabaseConnection 不直接支持复杂查询结果解析, 建议使用 sqlx 连接池或通过其他方式获取查询结果。

§替代方案

如果需要获取 Schema 列表,可以:

  1. 使用 sqlx 连接池直接查询
  2. 使用 SeaORM Entity 查询(如果已定义 Schema Entity)
  3. 通过数据库管理工具查询
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pub async fn get_schema_info( db: &DatabaseConnection, schema_name: &str, ) -> Result<SchemaInfo, SchemaError>

获取指定 Schema 的信息

§注意

此方法需要 PostgreSQL 数据库,并且需要能够执行查询操作。 由于 SeaORM 的 DatabaseConnection 不直接支持复杂查询结果解析, 建议使用 sqlx 连接池或通过其他方式获取查询结果。

§参数
  • db - 数据库连接
  • schema_name - Schema 名称
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pub async fn schema_exists( db: &DatabaseConnection, schema_name: &str, ) -> Result<bool, SchemaError>

检查 Schema 是否存在

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pub async fn create_schema( db: &DatabaseConnection, schema_name: &str, if_not_exists: bool, ) -> Result<(), SchemaError>

创建 Schema(PostgreSQL)

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pub async fn drop_schema( db: &DatabaseConnection, schema_name: &str, if_exists: bool, cascade: bool, ) -> Result<(), SchemaError>

删除 Schema(PostgreSQL)

§警告

删除 Schema 会删除其中的所有对象,请谨慎操作

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pub async fn set_schema_comment( db: &DatabaseConnection, schema_name: &str, comment: &str, ) -> Result<(), SchemaError>

设置 Schema 注释(PostgreSQL)

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