Struct Parameter

pub struct Parameter {
    pub len: i32,
    pub data: Vec<u8>,
}

Prepared statement bound parameter.

Fields

len: i32

Parameter data length.

data: Vec<u8>

Parameter data.

Use Self::decode to read this value.

Implementations

impl Parameter

pub fn decode(&self, format: ParameterFormat) -> Option<ParameterValue<'_>>

Decode parameter given the provided format. If the parameter is encoded using text encoding (default), a UTF-8 string is returned. If encoded using binary encoding, a slice of bytes.

If the parameter is NULL or the encoding doesn’t match the data, None is returned.

Example

use pgdog_plugin::prelude::*;

let parameter = Parameter {
    len: -1,
    data: vec![],
};
assert!(parameter.decode(ParameterFormat::Text).is_none());

let parameter = Parameter {
    len: 5,
    data: "hello".as_bytes().to_vec(),
};
assert_eq!(parameter.decode(ParameterFormat::Text), Some(ParameterValue::Text("hello")));

pub fn null(&self) -> bool

Returns true if the parameter is NULL.

Trait Implementations

impl Clone for Parameter

fn clone(&self) -> Parameter

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Parameter

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for Parameter

fn eq(&self, other: &Parameter) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for Parameter

impl StructuralPartialEq for Parameter