Struct c3p0_mysql::r2d2::mysql::LocalInfileHandler

pub struct LocalInfileHandler(_);

Callback to handle requests for local files. Consult Mysql documentation for the format of local infile data.

Support

Note that older versions of Mysql server may not support this functionality.

conn.query("CREATE TEMPORARY TABLE mysql.tbl(a TEXT)").unwrap();

conn.set_local_infile_handler(Some(
    LocalInfileHandler::new(|file_name, writer| {
        writer.write_all(b"row1: file name is ")?;
        writer.write_all(file_name)?;
        writer.write_all(b"\n")?;

        writer.write_all(b"row2: foobar\n")
    })
));

match conn.query("LOAD DATA LOCAL INFILE 'file_name' INTO TABLE mysql.tbl") {
    Ok(_) => (),
    Err(Error::MySqlError(ref e)) if e.code == 1148 => {
        // functionality is not supported by the server
        return;
    },
    err => {
        err.unwrap();
    },
}

let mut row_num = 0;
for (row_idx, row) in conn.query("SELECT * FROM mysql.tbl").unwrap().enumerate() {
    row_num = row_idx + 1;
    let row: (String,) = from_row(row.unwrap());
    match row_num {
        1 => assert_eq!(row.0, "row1: file name is file_name"),
        2 => assert_eq!(row.0, "row2: foobar"),
        _ => unreachable!(),
    }
}

assert_eq!(row_num, 2);

Methods

impl LocalInfileHandler

pub fn new<F>(f: F) -> LocalInfileHandler where
    F: for<'a, 'a> FnMut(&'a [u8], &'a mut LocalInfile) -> Result<(), Error> + Send + 'static, 

Trait Implementations

impl Eq for LocalInfileHandler

impl Clone for LocalInfileHandler

fn clone(&self) -> LocalInfileHandler

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for LocalInfileHandler

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

Formats the value using the given formatter.

impl PartialEq<LocalInfileHandler> for LocalInfileHandler

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

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

#[must_use] fn ne(&self, other: &Rhs) -> bool

This method tests for !=.