Enum oci_rs::types::SqlValue

pub enum SqlValue {
    VarChar(String),
    Integer(i64),
    Float(f64),
    Null,
}

The types that support conversion from OCI to Rust types.

Variants

VarChar(String)

Anything specified as VARCHAR or VARCHAR2 will end up here.

Integer(i64)

All integers regardless of their stated size are represented with this variant. e.g. SMALLINT and INTEGER will both be held.

Float(f64)

All floating point types regardless of their size are represented with this variant. e.g. REAL and FLOAT will both be held.

Null

Represents null values in columns.

Methods

impl SqlValue

fn value<T: FromSqlValue>(&self) -> Option<T>

Returns the internal value converting on the way to whichever type implements FromSqlValue.

It returns an Option because conversion might not be possible. For example converting an SqlValue::Integer to a String works just fine, but converting an SqlValue::Null to an i64 does not make sense.

Examples

use oci_rs::types::{SqlValue, ToSqlValue};

let v = SqlValue::Integer(42);
let i: i64 = v.value().expect("Won't covert to an i64");
let s: String = v.value().expect("Won't convert to a String");

assert_eq!(i, 42);
assert_eq!(s, "42");
 
let null = SqlValue::Null;
let null_as_i64: Option<i64> = null.value();
 
assert_eq!(null_as_i64, None);

Trait Implementations

impl Debug for SqlValue

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl PartialEq for SqlValue

fn eq(&self, __arg_0: &SqlValue) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, __arg_0: &SqlValue) -> bool

This method tests for !=.