Derive Macro KRQLQuery 

#[derive(KRQLQuery)]
{
    // Attributes available to this derive:
    #[krql]
    #[serde]
}

The KRQLQuery derive macro will create two structure QC and QC_ used to serialize following the format expected by krQL.

For instance the following structure:

pub struct Test
{
  pub print: Option<String>,
  #[serde(rename = "return")]
  pub return_value: Option<String>,
}

Should be serialized as:

test:
  print: "a string"
  return: "an other string"

But with serde, it would be serialized as: print: “a string” return: “an other string”

To solve that problem, KRQLQuery generates two structures TestQC and TestQC_. TestQC_ is a copy of Test used for serialization, and TestQC is defined as:

struct TestQC
{
  test: TestQC_
}

Then we can define Test with the following:

#[derive(Clone, Default, KRQLQuery)]
pub struct Test { ... }

That means that Test is serialized using the TestQC class into the proper structure for krQL.

serde(…) can be used on fields

# use kdb_connection::KRQLQuery;
#[derive(Clone, Default, KRQLQuery)]
pub struct Test {
  #[serde(rename="some field")]
  some_field: String,
 }

krql(key = “…”, tag = “…”) can be used to set the krQL key, otherwise default to snake case version of the class name. While tag is passed to serde, for enums.