mirror of
https://github.com/isar/rusqlite.git
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5534eb93c6
[Starting from 3.41.0 SQLite has wasm32-wasi support out of the box.][0] - Set `-DSQLITE_THREADSAFE=0`. Fixes: ``` $ wasmtime target/wasm32-wasi/release/examples/persons.wasm Error: failed to run main module `target/wasm32-wasi/release/examples/persons.wasm` Caused by: 0: failed to instantiate "target/wasm32-wasi/release/examples/persons.wasm" 1: unknown import: `env::pthread_mutexattr_init` has not been defined ``` - Drop `-DSQLITE_OS_OTHER`. Fixes: ``` $ wasmtime target/wasm32-wasi/release/examples/persons.wasm Error: failed to run main module `target/wasm32-wasi/release/examples/persons.wasm` Caused by: 0: failed to instantiate "target/wasm32-wasi/release/examples/persons.wasm" 1: unknown import: `env::sqlite3_os_init` has not been defined ``` - [Add wasi specific build flags][1] - Add basic example - Also, add instructions how to run it against wasm32-wasi. Using of file databases is also working, though `--mapdir` arg should be provided to `wasmtime run`. [0]: https://wasmlabs.dev/articles/sqlite-wasi-support/ [1]: https://github.com/vmware-labs/webassembly-language-runtimes/blob/main/libs/sqlite/wasi-patches/wlr-build.sh#L11
43 lines
959 B
Rust
43 lines
959 B
Rust
extern crate rusqlite;
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use rusqlite::{Connection, Result};
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struct Person {
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id: i32,
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name: String,
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}
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fn main() -> Result<()> {
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let conn = Connection::open_in_memory()?;
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conn.execute(
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"CREATE TABLE IF NOT EXISTS persons (
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id INTEGER PRIMARY KEY,
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name TEXT NOT NULL
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)",
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(), // empty list of parameters.
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)?;
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conn.execute(
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"INSERT INTO persons (name) VALUES (?1), (?2), (?3)",
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["Steven", "John", "Alex"].map(|n| n.to_string()),
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)?;
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let mut stmt = conn.prepare("SELECT id, name FROM persons")?;
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let rows = stmt.query_map([], |row| {
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Ok(Person {
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id: row.get(0)?,
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name: row.get(1)?,
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})
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})?;
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println!("Found persons:");
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for person in rows {
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match person {
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Ok(p) => println!("ID: {}, Name: {}", p.id, p.name),
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Err(e) => eprintln!("Error: {:?}", e),
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}
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}
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Ok(())
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}
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