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@ -0,0 +1,192 @@ |
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//! Data value structs
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|
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use serde::{Serialize, Deserialize}; |
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use crate::ID; |
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use std::borrow::Cow; |
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use crate::StorageError; |
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use std::num::ParseIntError; |
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use crate::model::DataType; |
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|
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/// Value of a particular type
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#[derive(Debug,Clone,Serialize,Deserialize,PartialEq)] |
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pub enum TypedValue { |
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/// Text
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String(Cow<'static, str>), |
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/// Integer
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Integer(i64), |
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/// Floating point number
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Decimal(f64), |
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/// Boolean yes/no
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Boolean(bool), |
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} |
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|
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impl TypedValue { |
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/// Try ot cast to another type. On error, the original value is returned as Err.
|
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pub fn cast_to(self, ty : DataType) -> Result<TypedValue, TypedValue> { |
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match (self, ty) { |
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// to string
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(s @ TypedValue::String(_), DataType::String) => Ok(s), |
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(TypedValue::Integer(i), DataType::String) => Ok(TypedValue::String(i.to_string().into())), |
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(TypedValue::Decimal(f), DataType::String) => Ok(TypedValue::String(f.to_string().into())), |
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(TypedValue::Boolean(b), DataType::String) => Ok(TypedValue::String(Cow::Borrowed(if b { "1" } else { "0" }))), |
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// to int
|
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(TypedValue::String(s), DataType::Integer) => { |
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match s.parse::<i64>() { |
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Ok(i) => Ok(TypedValue::Integer(i)), |
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Err(_) => Err(TypedValue::String(s)) |
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} |
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}, |
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(s @ TypedValue::Integer(_), DataType::Integer) => Ok(s), |
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(TypedValue::Decimal(f), DataType::Integer) => Ok(TypedValue::Integer(f.round() as i64)), |
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(TypedValue::Boolean(b), DataType::Integer) => Ok(TypedValue::Integer(if b { 1 } else { 0 })), |
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// to float
|
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(TypedValue::String(s), DataType::Decimal) => { |
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match s.parse::<f64>() { |
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Ok(i) => Ok(TypedValue::Decimal(i)), |
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Err(_) => Err(TypedValue::String(s)) |
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} |
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}, |
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(TypedValue::Integer(i), DataType::Decimal) => Ok(TypedValue::Decimal(i as f64)), |
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(d @ TypedValue::Decimal(_), DataType::Decimal) => Ok(d), |
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(e @ TypedValue::Boolean(_), DataType::Decimal) => Err(e), |
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// to bool
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(TypedValue::String(s), DataType::Boolean) => { |
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match &(&s).to_ascii_lowercase()[..] { |
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"y" | "yes" | "true" | "1" => { |
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Ok(TypedValue::Boolean(true)) |
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} |
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"n" | "no" | "false" | "0" => { |
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Ok(TypedValue::Boolean(false)) |
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} |
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_ => { |
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Err(TypedValue::String(s)) |
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} |
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} |
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}, |
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(TypedValue::Integer(i), DataType::Boolean) => Ok(TypedValue::Boolean(i != 0)), |
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(e @ TypedValue::Decimal(_), DataType::Boolean) => Err(e), |
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(b @ TypedValue::Boolean(_), DataType::Boolean) => Ok(b), |
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(s, _) => { |
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Err(s) |
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} |
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} |
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} |
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} |
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|
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#[cfg(test)] |
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mod tests { |
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use crate::TypedValue; |
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use crate::model::DataType; |
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|
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#[test] |
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fn test_cast_to_bool() { |
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// Cast to bool
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assert_eq!(Ok(TypedValue::Boolean(true)), TypedValue::Boolean(true).cast_to(DataType::Boolean)); |
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assert_eq!(Ok(TypedValue::Boolean(false)), TypedValue::Boolean(false).cast_to(DataType::Boolean)); |
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|
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assert_eq!(Ok(TypedValue::Boolean(true)), TypedValue::Integer(123).cast_to(DataType::Boolean)); |
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assert_eq!(Ok(TypedValue::Boolean(false)), TypedValue::Integer(0).cast_to(DataType::Boolean)); |
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|
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assert_eq!(Err(TypedValue::Decimal(0.0)), TypedValue::Decimal(0.0).cast_to(DataType::Boolean)); |
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assert_eq!(Err(TypedValue::Decimal(123.0)), TypedValue::Decimal(123.0).cast_to(DataType::Boolean)); |
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|
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assert_eq!(Ok(TypedValue::Boolean(true)), TypedValue::String("true".into()).cast_to(DataType::Boolean)); |
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assert_eq!(Ok(TypedValue::Boolean(true)), TypedValue::String("1".into()).cast_to(DataType::Boolean)); |
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assert_eq!(Ok(TypedValue::Boolean(true)), TypedValue::String("y".into()).cast_to(DataType::Boolean)); |
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assert_eq!(Ok(TypedValue::Boolean(true)), TypedValue::String("yes".into()).cast_to(DataType::Boolean)); |
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assert_eq!(Ok(TypedValue::Boolean(false)), TypedValue::String("false".into()).cast_to(DataType::Boolean)); |
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assert_eq!(Ok(TypedValue::Boolean(false)), TypedValue::String("0".into()).cast_to(DataType::Boolean)); |
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assert_eq!(Ok(TypedValue::Boolean(false)), TypedValue::String("n".into()).cast_to(DataType::Boolean)); |
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assert_eq!(Ok(TypedValue::Boolean(false)), TypedValue::String("no".into()).cast_to(DataType::Boolean)); |
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assert_eq!(Err(TypedValue::String("blorg".into())), TypedValue::String("blorg".into()).cast_to(DataType::Boolean)); |
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} |
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|
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#[test] |
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fn test_cast_to_int() { |
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// Cast to bool
|
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assert_eq!(Ok(TypedValue::Integer(1)), TypedValue::Boolean(true).cast_to(DataType::Integer)); |
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assert_eq!(Ok(TypedValue::Integer(0)), TypedValue::Boolean(false).cast_to(DataType::Integer)); |
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|
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assert_eq!(Ok(TypedValue::Integer(123)), TypedValue::Integer(123).cast_to(DataType::Integer)); |
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assert_eq!(Ok(TypedValue::Integer(0)), TypedValue::Integer(0).cast_to(DataType::Integer)); |
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|
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assert_eq!(Ok(TypedValue::Integer(0)), TypedValue::Decimal(0.0).cast_to(DataType::Integer)); |
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assert_eq!(Ok(TypedValue::Integer(123)), TypedValue::Decimal(123.0).cast_to(DataType::Integer)); |
||||
assert_eq!(Ok(TypedValue::Integer(-124)), TypedValue::Decimal(-123.7).cast_to(DataType::Integer)); |
||||
|
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assert_eq!(Ok(TypedValue::Integer(123)), TypedValue::String("123".into()).cast_to(DataType::Integer)); |
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assert_eq!(Ok(TypedValue::Integer(-123)), TypedValue::String("-123".into()).cast_to(DataType::Integer)); |
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assert_eq!(Ok(TypedValue::Integer(0)), TypedValue::String("0".into()).cast_to(DataType::Integer)); |
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assert_eq!(Err(TypedValue::String("123.456".into())), TypedValue::String("123.456".into()).cast_to(DataType::Integer)); |
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assert_eq!(Err(TypedValue::String("-123.456".into())), TypedValue::String("-123.456".into()).cast_to(DataType::Integer)); |
||||
} |
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|
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#[test] |
||||
fn test_cast_to_decimal() { |
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// Cast to bool
|
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assert_eq!(Err(TypedValue::Boolean(true)), TypedValue::Boolean(true).cast_to(DataType::Decimal)); |
||||
assert_eq!(Err(TypedValue::Boolean(false)), TypedValue::Boolean(false).cast_to(DataType::Decimal)); |
||||
|
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assert_eq!(Ok(TypedValue::Decimal(123.0)), TypedValue::Integer(123).cast_to(DataType::Decimal)); |
||||
assert_eq!(Ok(TypedValue::Decimal(0.0)), TypedValue::Integer(0).cast_to(DataType::Decimal)); |
||||
|
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assert_eq!(Ok(TypedValue::Decimal(0.0)), TypedValue::Decimal(0.0).cast_to(DataType::Decimal)); |
||||
assert_eq!(Ok(TypedValue::Decimal(-123.7)), TypedValue::Decimal(-123.7).cast_to(DataType::Decimal)); |
||||
|
||||
assert_eq!(Ok(TypedValue::Decimal(123.0)), TypedValue::String("123".into()).cast_to(DataType::Decimal)); |
||||
assert_eq!(Ok(TypedValue::Decimal(-123.0)), TypedValue::String("-123".into()).cast_to(DataType::Decimal)); |
||||
assert_eq!(Ok(TypedValue::Decimal(0.0)), TypedValue::String("0".into()).cast_to(DataType::Decimal)); |
||||
assert_eq!(Ok(TypedValue::Decimal(-123.456)), TypedValue::String("-123.456".into()).cast_to(DataType::Decimal)); |
||||
} |
||||
|
||||
#[test] |
||||
fn test_cast_to_string() { |
||||
// Cast to bool
|
||||
assert_eq!(Ok(TypedValue::String("1".into())), TypedValue::Boolean(true).cast_to(DataType::String)); |
||||
assert_eq!(Ok(TypedValue::String("0".into())), TypedValue::Boolean(false).cast_to(DataType::String)); |
||||
|
||||
assert_eq!(Ok(TypedValue::String("123".into())), TypedValue::Integer(123).cast_to(DataType::String)); |
||||
assert_eq!(Ok(TypedValue::String("0".into())), TypedValue::Integer(0).cast_to(DataType::String)); |
||||
|
||||
assert_eq!(Ok(TypedValue::String("0".into())), TypedValue::Decimal(0.0).cast_to(DataType::String)); |
||||
assert_eq!(Ok(TypedValue::String("123".into())), TypedValue::Decimal(123.0).cast_to(DataType::String)); |
||||
assert_eq!(Ok(TypedValue::String("-123.5".into())), TypedValue::Decimal(-123.5).cast_to(DataType::String)); |
||||
|
||||
assert_eq!(Ok(TypedValue::String("blorg".into())), TypedValue::String("blorg".into()).cast_to(DataType::String)); |
||||
} |
||||
} |
||||
|
||||
/// Instance of an object
|
||||
#[derive(Debug,Clone,Serialize,Deserialize)] |
||||
pub struct Object { |
||||
/// PK
|
||||
pub id : ID, |
||||
/// Object template ID
|
||||
pub model_id: ID, |
||||
} |
||||
|
||||
/// Relation between two objects
|
||||
#[derive(Debug,Clone,Serialize,Deserialize)] |
||||
pub struct Relation { |
||||
/// PK
|
||||
pub id : ID, |
||||
/// Source object ID
|
||||
pub object_id : ID, |
||||
/// Relation template ID
|
||||
pub model_id: ID, |
||||
/// Related object ID
|
||||
pub related_id : ID, |
||||
} |
||||
|
||||
/// Value attached to an object
|
||||
#[derive(Debug,Clone,Serialize,Deserialize)] |
||||
pub struct Value { |
||||
/// PK
|
||||
pub id : ID, |
||||
/// Owning object ID
|
||||
pub object_id : ID, |
||||
/// Property template ID
|
||||
pub model_id: ID, |
||||
/// Property value
|
||||
pub value : TypedValue, |
||||
} |
||||
@ -0,0 +1,57 @@ |
||||
//! Helper struct for inserting relational data in the database
|
||||
|
||||
use super::ID; |
||||
use super::data::TypedValue; |
||||
use serde::{Serialize,Deserialize}; |
||||
|
||||
/// Value to insert
|
||||
#[derive(Debug,Clone,Serialize,Deserialize)] |
||||
pub struct InsertValue { |
||||
pub model_id: ID, |
||||
pub value: TypedValue |
||||
} |
||||
|
||||
impl InsertValue { |
||||
pub fn new(model_id : ID, value : TypedValue) -> Self { |
||||
Self { |
||||
model_id, |
||||
value |
||||
} |
||||
} |
||||
} |
||||
|
||||
/// Info for inserting a relation
|
||||
#[derive(Debug,Clone,Serialize,Deserialize)] |
||||
pub struct InsertRel { |
||||
pub model_id: ID, |
||||
pub related_id: ID, |
||||
pub values: Vec<InsertValue> |
||||
} |
||||
|
||||
impl InsertRel { |
||||
pub fn new(model_id : ID, related_id: ID, values : Vec<InsertValue>) -> Self { |
||||
Self { |
||||
model_id, |
||||
related_id, |
||||
values |
||||
} |
||||
} |
||||
} |
||||
|
||||
/// Info for inserting a relation
|
||||
#[derive(Debug,Clone,Serialize,Deserialize)] |
||||
pub struct InsertObj { |
||||
pub model_id: ID, |
||||
pub values: Vec<InsertValue>, |
||||
pub relations: Vec<InsertRel>, |
||||
} |
||||
|
||||
impl InsertObj { |
||||
pub fn new(model_id : ID, values : Vec<InsertValue>, relations: Vec<InsertRel>) -> Self { |
||||
Self { |
||||
model_id, |
||||
values, |
||||
relations |
||||
} |
||||
} |
||||
} |
||||
@ -0,0 +1,92 @@ |
||||
//! Data model structs and enums
|
||||
|
||||
use serde::{Serialize, Deserialize}; |
||||
use std::borrow::Cow; |
||||
use super::ID; |
||||
use super::data::TypedValue; |
||||
use std::fmt::{Display, Formatter}; |
||||
use std::fmt; |
||||
|
||||
/// Get a description of a struct
|
||||
pub trait Describe { |
||||
/// Short but informative description for error messages
|
||||
fn describe(&self) -> String; |
||||
} |
||||
|
||||
/// Object template
|
||||
#[derive(Debug,Clone,Serialize,Deserialize)] |
||||
pub struct ObjectModel { |
||||
/// PK
|
||||
pub id : ID, |
||||
/// Template name, unique within the database
|
||||
pub name: String, |
||||
/// Parent object template ID
|
||||
pub parent_tpl_id: Option<ID>, |
||||
} |
||||
|
||||
/// Relation between templates
|
||||
#[derive(Debug,Clone,Serialize,Deserialize)] |
||||
pub struct RelationModel { |
||||
/// PK
|
||||
pub id: ID, |
||||
/// Object template ID
|
||||
pub object_tpl_id: ID, |
||||
/// Relation name, unique within the parent object
|
||||
pub name: String, |
||||
/// Relation is optional
|
||||
pub optional: bool, |
||||
/// Relation can be multiple
|
||||
pub multiple: bool, |
||||
/// Related object template ID
|
||||
pub related_tpl_id: ID, |
||||
} |
||||
|
||||
/// Property definition
|
||||
#[derive(Debug,Clone,Serialize,Deserialize)] |
||||
pub struct PropertyModel { |
||||
/// PK
|
||||
pub id: ID, |
||||
/// Object or Reference template ID
|
||||
pub parent_tpl_id: ID, |
||||
/// Property name, unique within the parent object or reference
|
||||
pub name: String, |
||||
/// Property is optional
|
||||
pub optional: bool, |
||||
/// Property can be multiple
|
||||
pub multiple: bool, |
||||
/// Property data type
|
||||
pub data_type: DataType, |
||||
/// Default value, used for newly created objects
|
||||
pub default: Option<TypedValue>, |
||||
} |
||||
|
||||
/// Value data type
|
||||
#[derive(Debug,Clone,Copy,Serialize,Deserialize,Eq,PartialEq)] |
||||
pub enum DataType { |
||||
/// Text
|
||||
String, |
||||
/// Integer
|
||||
Integer, |
||||
/// Floating point number
|
||||
Decimal, |
||||
/// Boolean yes/no
|
||||
Boolean, |
||||
} |
||||
|
||||
impl Display for ObjectModel { |
||||
fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result { |
||||
write!(f, "object \"{}\" ({})", self.name, self.id) |
||||
} |
||||
} |
||||
|
||||
impl Display for RelationModel { |
||||
fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result { |
||||
write!(f, "relation \"{}\" ({})", self.name, self.id) |
||||
} |
||||
} |
||||
|
||||
impl Display for PropertyModel { |
||||
fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result { |
||||
write!(f, "property \"{}\" ({})", self.name, self.id) |
||||
} |
||||
} |
||||
Loading…
Reference in new issue