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Refactor propval methods. closes #822
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,51 +1,47 @@ | ||
| // Should be the same as code in `lib.rs` | ||
|
|
||
| fn main() { | ||
| use atomic_lib::errors::AtomicResult; | ||
|
|
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| fn main() -> AtomicResult<()> { | ||
| // Import the `Storelike` trait to get access to most functions | ||
| use atomic_lib::Storelike; | ||
| // Start with initializing the in-memory store | ||
| let store = atomic_lib::Store::init().unwrap(); | ||
| let store = atomic_lib::Store::init()?; | ||
| // Pre-load the default Atomic Data Atoms (from atomicdata.dev), | ||
| // this is not necessary, but will probably make your project a bit faster | ||
| store.populate().unwrap(); | ||
| store.populate()?; | ||
| // We can create a new Resource, linked to the store. | ||
| // Note that since this store only exists in memory, it's data cannot be accessed from the internet. | ||
| // Let's make a new Property instance! Let's create "age". | ||
| let mut new_property = | ||
| atomic_lib::Resource::new_instance("https://atomicdata.dev/classes/Property", &store) | ||
| .unwrap(); | ||
| atomic_lib::Resource::new_instance("https://atomicdata.dev/classes/Property", &store)?; | ||
| // And add a description for that Property | ||
| new_property | ||
| .set_propval_shortname("description", "the age of a person", &store) | ||
| .unwrap(); | ||
| new_property.set_shortname("description", "the age of a person", &store)?; | ||
| // A subject URL for the new resource has been created automatically. | ||
| let subject = new_property.get_subject().clone(); | ||
| // Now we need to make sure these changes are also applied to the store. | ||
| // In order to change things in the store, we should use Commits, | ||
| // which are signed pieces of data that contain state changes. | ||
| // Because these are signed, we need an Agent, which has a private key to sign Commits. | ||
| // If you want to use an _existing_ agent, use atomic_lib::Agent::from_secret | ||
| let agent = store.create_agent(Some("my_agent")).unwrap(); | ||
| let agent = store.create_agent(Some("my_agent"))?; | ||
| store.set_default_agent(agent); | ||
| // Saving locally means it is _not_ send to the server. Use `.save` otherwise. | ||
| let _fails = new_property.save_locally(&store); | ||
| // But.. when we commit, we get an error! | ||
| // Because we haven't set all the properties required for the Property class. | ||
| // We still need to set `shortname` and `datatype`. | ||
| new_property | ||
| .set_propval_shortname("shortname", "age", &store) | ||
| .unwrap(); | ||
| new_property | ||
| .set_propval_shortname("datatype", atomic_lib::urls::INTEGER, &store) | ||
| .unwrap(); | ||
| new_property.save_locally(&store).unwrap(); | ||
| .set_shortname("shortname", "age", &store)? | ||
| .set_shortname("datatype", atomic_lib::urls::INTEGER, &store)? | ||
| .save_locally(&store)?; | ||
| // Now the changes to the resource applied to the in-memory store, and we can fetch the newly created resource! | ||
| let fetched_new_resource = store.get_resource(&subject).unwrap(); | ||
| let fetched_new_resource = store.get_resource(&subject)?; | ||
| assert!( | ||
| fetched_new_resource | ||
| .get_shortname("description", &store) | ||
| .unwrap() | ||
| .get_shortname("description", &store)? | ||
| .to_string() | ||
| == "the age of a person" | ||
| ); | ||
| Ok(()) | ||
| } |
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