cdrs 2.2.0

Cassandra DB driver written in Rust
Documentation 
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use rand;

use crate::frame::*;
use crate::types::*;

/// Struct that represents a body of a frame of type `prepare`
#[derive(Debug)]
pub struct BodyReqPrepare {
  query: CStringLong,
}

impl BodyReqPrepare {
  /// Creates new body of a frame of type `prepare` that prepares query `query`.
  pub fn new(query: String) -> BodyReqPrepare {
    BodyReqPrepare {
      query: CStringLong::new(query),
    }
  }
}

impl IntoBytes for BodyReqPrepare {
  fn into_cbytes(&self) -> Vec<u8> {
    self.query.into_cbytes()
  }
}

impl Frame {
  /// **Note:** This function should be used internally for building query request frames.
  pub fn new_req_prepare(query: String, flags: Vec<Flag>) -> Frame {
    let version = Version::Request;
    let stream = rand::random::<u16>();
    let opcode = Opcode::Prepare;
    let body = BodyReqPrepare::new(query);

    Frame {
      version: version,
      flags: flags,
      stream: stream,
      opcode: opcode,
      body: body.into_cbytes(),
      // for request frames it's always None
      tracing_id: None,
      warnings: vec![],
    }
  }
}