Trait PropertyPersistence 

pub trait PropertyPersistence:
    Send
    + Sync
    + 'static {
    type Value: Clone + Send + Sync + 'static;

    // Required methods
    fn load(&self) -> Result<Self::Value, Box<dyn Error + Send + Sync>>;
    fn save(
        &self,
        value: &Self::Value,
    ) -> Result<(), Box<dyn Error + Send + Sync>>;
}

Trait for implementing property value persistence

This trait allows custom persistence strategies for ObservableProperty values, enabling automatic save/load functionality to various storage backends like disk files, databases, cloud storage, etc.

Examples

use observable_property::PropertyPersistence;
use std::fs;

struct FilePersistence {
    path: String,
}

impl PropertyPersistence for FilePersistence {
    type Value = String;

    fn load(&self) -> Result<Self::Value, Box<dyn std::error::Error + Send + Sync>> {
        fs::read_to_string(&self.path)
            .map_err(|e| Box::new(e) as Box<dyn std::error::Error + Send + Sync>)
    }

    fn save(&self, value: &Self::Value) -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
        fs::write(&self.path, value)
            .map_err(|e| Box::new(e) as Box<dyn std::error::Error + Send + Sync>)
    }
}

Required Associated Types

type Value: Clone + Send + Sync + 'static

The type of value being persisted

Required Methods

fn load(&self) -> Result<Self::Value, Box<dyn Error + Send + Sync>>

Load the value from persistent storage

Returns

Returns the loaded value or an error if loading fails

fn save(&self, value: &Self::Value) -> Result<(), Box<dyn Error + Send + Sync>>

Save the value to persistent storage

Arguments

• value - The value to persist

Returns

Returns Ok(()) if successful, or an error if saving fails

Implementors