reifydb-transaction 0.5.6

Transaction management and concurrency control for ReifyDB
Documentation 
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// SPDX-License-Identifier: Apache-2.0
// Copyright (c) 2025 ReifyDB

use reifydb_core::interface::catalog::{change::CatalogTrackIdentityChangeOperations, identity::Identity};
use reifydb_type::{Result, value::identity::IdentityId};

use crate::{
	change::{
		Change,
		OperationType::{Create, Delete, Update},
		TransactionalIdentityChanges,
	},
	interceptor::identity::{
		IdentityPostCreateContext, IdentityPostUpdateContext, IdentityPreDeleteContext,
		IdentityPreUpdateContext,
	},
	transaction::admin::AdminTransaction,
};

impl CatalogTrackIdentityChangeOperations for AdminTransaction {
	fn track_identity_created(&mut self, identity: Identity) -> Result<()> {
		self.interceptors.identity_post_create.execute(IdentityPostCreateContext::new(&identity))?;
		let change = Change {
			pre: None,
			post: Some(identity),
			op: Create,
		};
		self.changes.add_identity_change(change);
		Ok(())
	}

	fn track_identity_updated(&mut self, pre: Identity, post: Identity) -> Result<()> {
		self.interceptors.identity_pre_update.execute(IdentityPreUpdateContext::new(&pre))?;
		self.interceptors.identity_post_update.execute(IdentityPostUpdateContext::new(&pre, &post))?;
		let change = Change {
			pre: Some(pre),
			post: Some(post),
			op: Update,
		};
		self.changes.add_identity_change(change);
		Ok(())
	}

	fn track_identity_deleted(&mut self, identity: Identity) -> Result<()> {
		self.interceptors.identity_pre_delete.execute(IdentityPreDeleteContext::new(&identity))?;
		let change = Change {
			pre: Some(identity),
			post: None,
			op: Delete,
		};
		self.changes.add_identity_change(change);
		Ok(())
	}
}

impl TransactionalIdentityChanges for AdminTransaction {
	fn find_identity(&self, id: IdentityId) -> Option<&Identity> {
		for change in self.changes.identity.iter().rev() {
			if let Some(identity) = &change.post {
				if identity.id == id {
					return Some(identity);
				}
			} else if let Some(identity) = &change.pre
				&& identity.id == id && change.op == Delete
			{
				return None;
			}
		}
		None
	}

	fn find_identity_by_name(&self, name: &str) -> Option<&Identity> {
		self.changes.identity.iter().rev().find_map(|change| change.post.as_ref().filter(|u| u.name == name))
	}

	fn is_identity_deleted(&self, id: IdentityId) -> bool {
		self.changes
			.identity
			.iter()
			.rev()
			.any(|change| change.op == Delete && change.pre.as_ref().map(|u| u.id) == Some(id))
	}

	fn is_identity_deleted_by_name(&self, name: &str) -> bool {
		self.changes.identity.iter().rev().any(|change| {
			change.op == Delete && change.pre.as_ref().map(|u| u.name == name).unwrap_or(false)
		})
	}
}