添加qiming-rcoder模块

qiming-rcoder/crates/duckdb_manager/src/error.rs

@@ -0,0 +1,68 @@
+//! DuckDB Manager error types
+//!
+//! Defines error types for DuckDB storage manager
+
+use thiserror::Error;
+
+/// DuckDB storage manager error type
+#[derive(Debug, Error)]
+pub enum DuckDbError {
+    /// Database connection error
+    #[error("database connection error: {0}")]
+    ConnectionError(String),
+
+    /// SQL execution error
+    #[error("SQL execution error: {0}")]
+    QueryError(String),
+
+    /// Data not found
+    #[error("data not found: {entity} with {key} = {value}")]
+    NotFound {
+        entity: &'static str,
+        key: &'static str,
+        value: String,
+    },
+
+    /// Data already exists
+    #[error("data already exists: {entity} with {key} = {value}")]
+    AlreadyExists {
+        entity: &'static str,
+        key: &'static str,
+        value: String,
+    },
+
+    /// Transaction error
+    #[error("transaction error: {0}")]
+    TransactionError(String),
+
+    /// Serialization/deserialization error
+    #[error("serialization error: {0}")]
+    SerializationError(String),
+
+    /// Data integrity error
+    #[error("data integrity error: {0}")]
+    IntegrityError(String),
+
+    /// Initialization error
+    #[error("initialization error: {0}")]
+    InitializationError(String),
+
+    /// Internal error
+    #[error("internal error: {0}")]
+    InternalError(String),
+}
+
+impl From<duckdb::Error> for DuckDbError {
+    fn from(err: duckdb::Error) -> Self {
+        DuckDbError::QueryError(err.to_string())
+    }
+}
+
+impl From<serde_json::Error> for DuckDbError {
+    fn from(err: serde_json::Error) -> Self {
+        DuckDbError::SerializationError(err.to_string())
+    }
+}
+
+/// DuckDB 操作结果类型
+pub type DuckDbResult<T> = Result<T, DuckDbError>;