orc

Project Status

This project is still a work in progress.

Current Support

Column Encoding	Read	Write	Go Type
SmallInt, Int, BigInt	✓		int64
Float, Double	✓		float32, float64
String, Char, and VarChar	✓		string
Boolean	✓		bool
TinyInt	✓		byte
Binary	✓		[]byte
Decimal	✓		orc.Decimal
Date	✓		orc.Date (time.Time)
Timestamp	✓		time.Time
Struct	✓		orc.Struct (map[string]interface{})
List	✓		[]interface{}
Map	✓		[]orc.MapEntry
Union	✓		interface{}

• The writer support is in its late stages, however, I do not recommend using it yet.

Example

r, err := Open("./examples/demo-12-zlib.orc")
if err != nil {
    log.Fatal(err)
}
defer r.Close()

// Create a new Cursor reading the provided columns.
c := r.Select("_col0", "_col1", "_col2")

// Iterate over each stripe in the file.
for c.Stripes() {
    
    // Iterate over each row in the stripe.
    for c.Next() {
          
        // Retrieve a slice of interface values for the current row.
        log.Println(c.Row())
        
    }
   
}

if err := c.Err(); err != nil {
    log.Fatal(err)
}