liboxen 0.53.0

Oxen is a fast data version control system, built with machine learning training data in mind. Designed to handle terabytes of data with ease, using a workflow similar to git. Version both structured and unstructured data of any modality: text, images, video, audio, CSV, Parquet, JSONL, model checkpoints, and more. liboxen is the embeddable core library behind the oxen CLI and server, which power fine tuning and inference pipelines for multimodal LLMs, image models, and video models on Oxen.ai.
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use crate::{error::OxenError, model::Schema};

pub mod columns;
pub mod df_db;
pub mod rows;
pub mod workspace_df_db;

#[derive(Debug, thiserror::Error)]
pub enum DataFrameError {
    #[error("df must have exactly one row to be used for modification")]
    ModifyOnly1Row,

    /// A column name was requested in a dataframe, but no such column exists.
    #[error("Column name not found: {0}")]
    ColumnNameNotFound(String),

    /// A column name already exists in the dataframe's schema and cannot be added again.
    #[error("Column name already exists: {0}")]
    ColumnNameAlreadyExists(String),

    /// A data frame's own schema carries a column name reserved for Oxen's
    /// internal use (see [`crate::constants::OXEN_COLS`]), so it cannot be indexed.
    #[error("Column name is reserved for Oxen's internal use: {0}")]
    ReservedColumnName(String),

    #[error("Failed to create df db directory: {0}")]
    FailCreateDfDbDir(std::io::Error),

    #[error("Failed to open df db: {0}")]
    FailOpenDfDb(Box<Self>),

    #[error("No rows in table {0}")]
    NoRowsInTable(String),

    #[error("Invalid file type: expected .csv, .tsv, .parquet, .jsonl, .json, .ndjson")]
    InvalidFileType,

    #[error("modify_row incompatible_schemas {table_schema:?}\n{df_cols:?}")]
    IncompatibleSchemas {
        table_schema: Schema,
        df_cols: Vec<String>,
    },

    #[error("Expected {expected} rows to be modified, but got {actual}")]
    UnexpectedModifications { expected: usize, actual: usize },

    #[error("DataFrame with UUID {0} not found.")]
    MissingDataFrame(String),

    #[error("Must index embeddings before querying")]
    MustIndexEmbeddings,

    #[error("All embeddings must be the same length")]
    EmbeddingLengthMismatch,

    #[error("Expected Float32Array inside ListArray")]
    ExpectedF32ArrayInside,

    #[error("Expected arrow::datatypes::DataType::Float32 inside List")]
    ExpectedF32,

    #[error("Failed to downcast to FixedSizeListArray")]
    FailFixedSizeDowncast,

    #[error("Column FixedSizeList must be a float32 type")]
    ExpectF32FixedSizeList,

    #[error("Expected arrow::datatypes::DataType::List inside as data type")]
    ExpectListInside,

    #[error("Failed to downcast to ListArray")]
    FailListDowncast,

    #[error("Expected Float64Array inside ListArray")]
    ExpectF64ArrayInside,

    #[error("Column must be a list of float32 or float64")]
    ExpectColFloats,

    #[error("Column must be a list type")]
    ExpectList,

    /// No rows were found for a given SQL query.
    #[error("Query returned no rows")]
    NoRowsFound,

    #[error("Vectors must have a length greater than 0")]
    EmptyEmbedding,

    #[error("Column does not exist in embedding configuration: {0}")]
    ColNotFoundInConfig(String),

    #[error("Failed to read embedding configuration file: {0}")]
    FailReadConfig(Box<OxenError>), // TODO: change to FsError when PR lands

    #[error("Failed to write embedding configuration: {0}")]
    FailWriteConfig(std::io::Error),

    #[error("No SELECT found in query")]
    NoSelectInQuery,

    #[error("No FROM found in query")]
    NoFromInQuery,

    #[error("Export result exceeds the maximum of {0} rows; add a LIMIT to the query")]
    ExportResultTooLarge(usize),

    #[error("Dataset is not indexed")]
    NotIndexed,

    #[error("Could not create parent directory for DuckDB file: {0}")]
    CreateParent(Box<OxenError>), // TODO: change to FsError when PR lands

    // #[error("Resource not found: {0}")]
    // ResourceNotFound(String),
    #[error("{0}")]
    DuckDb(#[from] duckdb::Error),

    #[error("{0}")]
    Arrow(#[from] arrow::error::ArrowError),

    #[error("{0}")]
    Polars(#[from] polars::error::PolarsError),

    #[error("Failed to parse SQL: {0}")]
    SqlParse(#[from] sqlparser::parser::ParserError),

    #[error("{0}")]
    RocksDb(#[from] rocksdb::Error),

    #[error("{0}")]
    SerdeJson(#[from] serde_json::error::Error),

    #[error("{0}")]
    TomlDe(#[from] toml::de::Error),

    #[error("{0}")]
    TomlSer(#[from] toml::ser::Error),
}