pub struct TpToken(_);
Expand description

A transaction processing token, used by yottadb to ensure ACID properties.

The only valid values for a TpToken are the default (TpToken::default()) or a token passed in from Context::tp.

TpTokens can be converted to u64, but not vice-versa.

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Returns the “default value” for a type. Read more

This is useful for calling C functions that have not yet been wrapped in the simple_api from inside a transaction.

Example
use yottadb::*;
use yottadb::craw::ydb_buffer_t;
Context::new().tp(|ctx| {
  let tptoken_raw = u64::from(ctx.tptoken());
  let mut errstr = ydb_buffer_t {
    buf_addr: std::ptr::null_mut(),
    len_alloc: 0,
    len_used: 0,
  };
  unsafe { craw::ydb_stdout_stderr_adjust_t(tptoken_raw, &mut errstr) };
  Ok(TransactionStatus::Ok)
}, "BATCH", &[]);

Feeds this value into the given Hasher. Read more

Feeds a slice of this type into the given Hasher. Read more

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

This method tests for !=.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

Uses borrowed data to replace owned data, usually by cloning. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.