Struct PgwireLite 

pub struct PgwireLite { /* private fields */ }

Main client for interacting with PostgreSQL-compatible servers.

This struct provides the core functionality for establishing connections and executing queries against a PostgreSQL-compatible server.

Implementations

impl PgwireLite

pub fn new( hostname: &str, port: u16, use_tls: bool, verbosity: &str, ) -> Result<Self, Box<dyn Error>>

Creates a new PgwireLite client with the specified connection parameters.

Arguments

• hostname - The hostname or IP address of the PostgreSQL server
• port - The port number the PostgreSQL server is listening on
• use_tls - Whether to use TLS encryption for the connection
• verbosity - Error/notice verbosity level, one of: “terse”, “default”, “verbose”, “sqlstate”

Returns

A Result containing the new PgwireLite instance or an error

Example

use pgwire_lite::PgwireLite;

let client = PgwireLite::new("localhost", 5432, false, "default")
    .expect("Failed to create client");

pub fn libpq_version(&self) -> String

Returns the version of the underlying libpq library.

Returns

A string representing the version in the format “major.minor.patch”

pub fn verbosity(&self) -> String

Returns the current verbosity setting.

Returns

A string representation of the current verbosity level

pub fn query(&self, query: &str) -> Result<QueryResult, Box<dyn Error>>

Executes a SQL query and returns the results.

This method creates a fresh connection for each query, executes the query, and processes the results. It handles all aspects of connection management and error handling.

Arguments

• query - The SQL query to execute

Returns

A Result containing a QueryResult with the query results or an error

Example

use pgwire_lite::PgwireLite;

let client = PgwireLite::new("localhost", 5444, false, "default")
    .expect("Failed to create client");
     
let result = client.query("SELECT 1 as value")
    .expect("Query failed");
     
println!("Number of rows: {}", result.row_count);