Struct Statement

pub struct Statement { /* private fields */ }

PostgreSQL statement, parsed by pg_query.

Implements Deref on PdStatement, which is passed in using the FFI interface. Use the PdStatement::protobuf method to obtain a reference to the Abstract Syntax Tree.

Example

use pgdog_plugin::pg_query::NodeEnum;

let ast = statement.protobuf();
let root = ast
    .stmts
    .first()
    .unwrap()
    .stmt
    .as_ref()
    .unwrap()
    .node
    .as_ref();

if let Some(NodeEnum::SelectStmt(stmt)) = root {
    println!("SELECT statement: {:#?}", stmt);
}

Methods from Deref<Target = PdStatement>

pub fn protobuf(&self) -> PdParseResult

Get the protobuf-wrapped PostgreSQL statement. The returned structure, PdParseResult, implements Deref to pg_query::protobuf::ParseResult and can be used to parse the statement.

Trait Implementations

impl Deref for Statement

type Target = PdStatement

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.