Struct Schema 

pub struct Schema {
    pub version: Option<u32>,
    pub tables: Vec<TableDef>,
}

Schema containing all table definitions

Fields

version: Option<u32>

Schema format version (extracted from -- qail: version=N directive)

tables: Vec<TableDef>

Implementations

impl Schema

pub fn parse(input: &str) -> Result<Self, String>

Parse a schema from .qail format string

Examples found in repository

examples/test_schema_parse.rs (line 26)

fn main() {
    let schema_content = r#"
-- Test Schema
table users (
    id uuid primary_key,
    email text not null,
    name varchar(255),
    tags text[],
    created_at timestamp
)

table orders (
    id serial primary_key,
    user_id uuid not null references users(id),
    total decimal(10,2),
    status text check(status in ('pending', 'completed'))
)
"#;

    println!("Testing schema parsing...\n");

    match Schema::parse(schema_content) {
        Ok(schema) => {
            println!("✓ Parsed {} tables", schema.tables.len());

            for table in &schema.tables {
                println!("\nTable: {}", table.name);
                for col in &table.columns {
                    print!("  - {} {}", col.name, col.typ);
                    if col.primary_key {
                        print!(" PK");
                    }
                    if !col.nullable {
                        print!(" NOT NULL");
                    }
                    if col.is_array {
                        print!(" ARRAY");
                    }
                    if col.is_serial {
                        print!(" SERIAL");
                    }
                    if let Some(ref check) = col.check {
                        print!(" CHECK({})", check);
                    }
                    if let Some(ref refs) = col.references {
                        print!(" -> {}", refs);
                    }
                    if let Some(ref params) = col.type_params {
                        print!(" ({})", params.join(","));
                    }
                    println!();
                }
            }

            println!("\n✓ JSON export:");
            match schema.to_json() {
                Ok(json) => println!("{}", &json[..300.min(json.len())]),
                Err(e) => println!("JSON error: {}", e),
            }
        }
        Err(e) => {
            eprintln!("✗ Parse error: {}", e);
            std::process::exit(1);
        }
    }
}

pub fn find_table(&self, name: &str) -> Option<&TableDef>

Find a table by name

pub fn to_json(&self) -> Result<String, String>

Export schema to JSON string (for qail-macros compatibility)

Examples found in repository

examples/test_schema_parse.rs (line 60)

fn main() {
    let schema_content = r#"
-- Test Schema
table users (
    id uuid primary_key,
    email text not null,
    name varchar(255),
    tags text[],
    created_at timestamp
)

table orders (
    id serial primary_key,
    user_id uuid not null references users(id),
    total decimal(10,2),
    status text check(status in ('pending', 'completed'))
)
"#;

    println!("Testing schema parsing...\n");

    match Schema::parse(schema_content) {
        Ok(schema) => {
            println!("✓ Parsed {} tables", schema.tables.len());

            for table in &schema.tables {
                println!("\nTable: {}", table.name);
                for col in &table.columns {
                    print!("  - {} {}", col.name, col.typ);
                    if col.primary_key {
                        print!(" PK");
                    }
                    if !col.nullable {
                        print!(" NOT NULL");
                    }
                    if col.is_array {
                        print!(" ARRAY");
                    }
                    if col.is_serial {
                        print!(" SERIAL");
                    }
                    if let Some(ref check) = col.check {
                        print!(" CHECK({})", check);
                    }
                    if let Some(ref refs) = col.references {
                        print!(" -> {}", refs);
                    }
                    if let Some(ref params) = col.type_params {
                        print!(" ({})", params.join(","));
                    }
                    println!();
                }
            }

            println!("\n✓ JSON export:");
            match schema.to_json() {
                Ok(json) => println!("{}", &json[..300.min(json.len())]),
                Err(e) => println!("JSON error: {}", e),
            }
        }
        Err(e) => {
            eprintln!("✗ Parse error: {}", e);
            std::process::exit(1);
        }
    }
}

pub fn from_json(json: &str) -> Result<Self, String>

Import schema from JSON string

pub fn from_file(path: &Path) -> Result<Self, String>

Load schema from a .qail file

Trait Implementations

impl Clone for Schema

fn clone(&self) -> Schema

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Schema

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Schema

fn default() -> Schema

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Schema

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Schema

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.