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Finish examples.

This commit is contained in:
James Pace 2024-02-14 22:10:34 -05:00
parent 0591f445a1
commit e97968054d
2 changed files with 32 additions and 149 deletions
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138
Cargo.lock generated
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@ -36,21 +36,6 @@ version = "0.2.16"
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dependencies = [
"libc",
]
[[package]]
name = "anyhow"
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@ -133,12 +118,6 @@ dependencies = [
"generic-array",
]
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@ -166,30 +145,12 @@ version = "1.0.0"
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@ -508,29 +469,6 @@ dependencies = [
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@ -566,15 +504,6 @@ version = "1.0.10"
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@ -1117,7 +1046,6 @@ dependencies = [
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@ -1210,7 +1138,6 @@ dependencies = [
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@ -1252,7 +1179,6 @@ dependencies = [
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@ -1289,7 +1215,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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@ -1539,75 +1464,12 @@ version = "0.11.0+wasi-snapshot-preview1"
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43
src/main.rs
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@ -1,47 +1,68 @@
use serde::{Deserialize, Serialize};
use sqlx::{types::Json, Row};
#[tokio::main]
async fn main() -> anyhow::Result<()> {
// Connect to the database.
let pool = sqlx::postgres::PgPool::connect("postgresql://postgres:devpassword@localhost/postgres").await?;
let pool =
sqlx::postgres::PgPool::connect("postgresql://postgres:devpassword@localhost/postgres")
.await?;
// Make the table.
let _ = sqlx::query(
"CREATE TABLE IF NOT EXISTS test (id INTEGER PRIMARY KEY AUTOINCREMENT,
"CREATE TABLE IF NOT EXISTS test (id SERIAL PRIMARY KEY,
name TEXT,
doc JSONB
);"
).execute(&pool).await?;
);",
)
.execute(&pool)
.await?;
// Insert some entries into db.
// Add James.
let james_doc = Doc {
age: 30,
fav_color: "blue".to_owned(),
fav_movie: "Iron Man".to_owned()
fav_movie: "Iron Man".to_owned(),
};
let james_doc_as_str = serde_json::to_string(&james_doc)?;
let james_add_query = format!(r#"INSERT INTO test (name, doc) VALUES('James', '{}');"#, james_doc_as_str);
let james_add_query = format!(
r#"INSERT INTO test (name, doc) VALUES('James', '{}');"#,
james_doc_as_str
);
let _ = sqlx::query(&james_add_query).execute(&pool).await?;
// Add Dave.
let dave_doc = Doc {
age: 25,
fav_color: "yellow".to_owned(),
fav_movie: "Spiderman".to_owned()
fav_movie: "Spiderman".to_owned(),
};
let dave_doc_as_str = serde_json::to_string(&dave_doc)?;
let dave_add_query = format!(r#"INSERT INTO test (name, doc) VALUES('Dave', '{}');"#, dave_doc_as_str);
let dave_add_query = format!(
r#"INSERT INTO test (name, doc) VALUES('Dave', '{}');"#,
dave_doc_as_str
);
let _ = sqlx::query(&dave_add_query).execute(&pool).await?;
// Get james favorite color.
let fav_color_query = r#"SELECT doc->>'fav_color' FROM test WHERE name = 'James';"#;
let fav_color_result = sqlx::query(&fav_color_query).fetch_one(&pool).await?;
let james_fav_color = fav_color_result.try_get::<String, usize>(0)?;
println!("James' Fav Color: {}", james_fav_color);
// Get name based on movie.
let spiderman_query = r#"SELECT name FROM test WHERE doc->>'fav_movie' = 'Spiderman';"#;
let spiderman_result = sqlx::query(&spiderman_query).fetch_one(&pool).await?;
let spiderman_name = spiderman_result.try_get::<String, usize>(0)?;
println!("{} likes Spiderman.", spiderman_name);
// Get james's doc.
// Row based on color.
let james_query = r#"SELECT doc FROM test where name = 'James'"#;
let james_result = sqlx::query(&james_query).fetch_one(&pool).await?;
let james_doc = james_result.try_get::<Json<Doc>, usize>(0)?.0;
println!("James Doc is: {:?}", james_doc);
Ok(())
}
#[derive(Serialize, Deserialize)]
#[derive(Serialize, Deserialize, Debug)]
struct Doc {
age: u32,
fav_color: String,