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::{
	binding::Binding,
	change::CatalogTrackBindingChangeOperations,
	id::{BindingId, NamespaceId},
};
use reifydb_type::Result;

use crate::{
	change::{Change, OperationType::*, TransactionalBindingChanges},
	transaction::admin::AdminTransaction,
};

impl CatalogTrackBindingChangeOperations for AdminTransaction {
	fn track_binding_created(&mut self, binding: Binding) -> Result<()> {
		let change = Change {
			pre: None,
			post: Some(binding),
			op: Create,
		};
		self.changes.add_binding_change(change);
		Ok(())
	}

	fn track_binding_deleted(&mut self, binding: Binding) -> Result<()> {
		let change = Change {
			pre: Some(binding),
			post: None,
			op: Delete,
		};
		self.changes.add_binding_change(change);
		Ok(())
	}
}

impl TransactionalBindingChanges for AdminTransaction {
	fn find_binding(&self, id: BindingId) -> Option<&Binding> {
		for change in self.changes.binding.iter().rev() {
			if let Some(binding) = &change.post {
				if binding.id == id {
					return Some(binding);
				}
			} else if let Some(binding) = &change.pre
				&& binding.id == id && change.op == Delete
			{
				return None;
			}
		}
		None
	}

	fn find_binding_by_name(&self, namespace: NamespaceId, name: &str) -> Option<&Binding> {
		for change in self.changes.binding.iter().rev() {
			if let Some(binding) = &change.post {
				if binding.namespace == namespace && binding.name == name {
					return Some(binding);
				}
			} else if let Some(binding) = &change.pre
				&& binding.namespace == namespace
				&& binding.name == name && change.op == Delete
			{
				return None;
			}
		}
		None
	}

	fn is_binding_deleted(&self, id: BindingId) -> bool {
		self.changes
			.binding
			.iter()
			.rev()
			.any(|change| change.op == Delete && change.pre.as_ref().map(|b| b.id) == Some(id))
	}

	fn is_binding_deleted_by_name(&self, namespace: NamespaceId, name: &str) -> bool {
		self.changes.binding.iter().rev().any(|change| {
			change.op == Delete
				&& change
					.pre
					.as_ref()
					.map(|b| b.namespace == namespace && b.name == name)
					.unwrap_or(false)
		})
	}
}