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//! Collection stores documents as JSON objects.
//!
use super::{
engine::{DocumentCollection, Documents, Engine},
errors::Error,
};
use serde_json::Value;
use std::sync::Arc;
#[cfg(feature = "sync")]
use std::sync::Mutex;
#[cfg(not(feature = "sync"))]
use tokio::sync::Mutex;
/// Stores JSON documents.
#[derive(Clone)]
pub struct Collection {
pub data: DocumentCollection,
}
impl Collection {
/// Make a new collection.
pub fn new() -> Collection {
Collection {
data: Arc::new(Mutex::new(Vec::new())),
}
}
/// Insert new document.
///
/// # #[cfg(feature = "sync")]
/// use memquery::{doc, errors::Error, memdb::MemDb, query};
///
/// # #[cfg(feature = "sync")]
/// fn play() -> Result<(), Error> {
/// let memdb = MemDb::new();
/// memdb.create_collection("TestCollection");
/// let coll = memdb.collection("TestCollection")?;
/// coll.insert(doc!({ "name": "Tom", "age": 25 }))?;
/// Ok(())
/// }
/// ```
#[cfg(feature = "sync")]
pub fn insert(&self, document: Value) -> Result<(), Error> {
if !document.is_object() {
return Err(Error::MQError(String::from(
"Document must be a JSON object.",
)));
}
self.data.lock().unwrap().push(document);
Ok(())
}
/// Insert new document (async).
///
/// ```
/// # #[cfg(not(feature = "sync"))]
/// use memquery::{doc, errors::Error, memdb::MemDb, query};
///
/// # #[cfg(not(feature = "sync"))]
/// async fn play() -> Result<(), Error> {
/// let memdb = MemDb::new();
/// memdb.create_collection("TestCollection").await;
/// let coll = memdb.collection("TestCollection").await?;
/// coll.insert(doc!({ "name": "Tom", "age": 25 })).await?;
/// Ok(())
/// }
/// ```
#[cfg(not(feature = "sync"))]
pub async fn insert(&self, document: Value) -> Result<(), Error> {
if !document.is_object() {
return Err(Error::MQError(String::from(
"Document must be a JSON object.",
)));
}
self.data.lock().await.push(document);
Ok(())
}
/// Return documents that match specified criteria.
///
/// # #[cfg(feature = "sync")]
/// use memquery::{doc, errors::Error, memdb::MemDb, query};
///
/// # #[cfg(feature = "sync")]
/// fn play() -> Result<(), Error> {
/// let memdb = MemDb::new();
/// memdb.create_collection("TestCollection");
/// let coll = memdb.collection("TestCollection")?;
/// coll.insert(doc!({ "name": "Tom", "age": 25 }))?;
/// let docs = coll.find(query!({"name": "Tom", "age": 25}))?;
/// Ok(())
/// }
/// ```
#[cfg(feature = "sync")]
pub fn find(&self, query: Value) -> Result<Documents, Error> {
if !query.is_object() {
return Err(Error::MQError(String::from("Query must be a JSON object.")));
}
Engine::with_collection(self.data.clone()).find(&query)
}
/// Return documents that match specified criteria (async).
///
/// ```
/// # #[cfg(not(feature = "sync"))]
/// use memquery::{doc, errors::Error, memdb::MemDb, query};
///
/// # #[cfg(not(feature = "sync"))]
/// async fn play() -> Result<(), Error> {
/// let memdb = MemDb::new();
/// memdb.create_collection("TestCollection").await;
/// let coll = memdb.collection("TestCollection").await?;
/// coll.insert(doc!({ "name": "Tom", "age": 25 })).await?;
/// let docs = coll.find(query!({"name": "Tom", "age": 25})).await?;
/// Ok(())
/// }
/// ```
#[cfg(not(feature = "sync"))]
pub async fn find(&self, query: Value) -> Result<Documents, Error> {
if !query.is_object() {
return Err(Error::MQError(String::from("Query must be a JSON object.")));
}
Engine::with_collection(self.data.clone())
.find(&query)
.await
}
/// Updates documents that match search criteria.
///
/// ```
/// # #[cfg(feature = "sync")]
/// use memquery::{doc, errors::Error, memdb::MemDb, query, update};
///
/// # #[cfg(feature = "sync")]
/// fn play() -> Result<(), Error> {
/// let memdb = MemDb::new();
/// memdb.create_collection("TestCollection");
/// let coll = memdb.collection("TestCollection")?;
/// coll.insert(doc!({ "name": "Tom", "age": 25 }))?;
/// let docs_updated = coll
/// .find_and_update(
/// query!({"name": "Tom"}),
/// update!({"nickname": "Bobcat", "voice": "meow"}),
/// )?;
/// Ok(())
/// }
/// ```
#[cfg(feature = "sync")]
pub fn find_and_update(&self, query: Value, update: Value) -> Result<u64, Error> {
if !query.is_object() {
return Err(Error::MQError(String::from("Query must be a JSON object.")));
}
if !update.is_object() {
return Err(Error::MQError(String::from(
"Update must be a JSON object.",
)));
}
Engine::with_collection(self.data.clone()).find_and_update(&query, &update)
}
/// Updates documents that match search criteria.
///
/// ```
/// # #[cfg(not(feature = "sync"))]
/// use memquery::{doc, errors::Error, memdb::MemDb, query, update};
///
/// # #[cfg(not(feature = "sync"))]
/// async fn play() -> Result<(), Error> {
/// let memdb = MemDb::new();
/// memdb.create_collection("TestCollection").await;
/// let coll = memdb.collection("TestCollection").await?;
/// coll.insert(doc!({ "name": "Tom", "age": 25 })).await?;
/// let docs_updated = coll
/// .find_and_update(
/// query!({"name": "Tom"}),
/// update!({"nickname": "Bobcat", "voice": "meow"}),
/// )
/// .await?;
/// Ok(())
/// }
/// ```
#[cfg(not(feature = "sync"))]
pub async fn find_and_update(&self, query: Value, update: Value) -> Result<u64, Error> {
if !query.is_object() {
return Err(Error::MQError(String::from("Query must be a JSON object.")));
}
if !update.is_object() {
return Err(Error::MQError(String::from(
"Update must be a JSON object.",
)));
}
Engine::with_collection(self.data.clone())
.find_and_update(&query, &update)
.await
}
/// Delete documents that match search criteria.
///
/// ```
/// # #[cfg(feature = "sync")]
/// use memquery::{doc, errors::Error, memdb::MemDb, query};
///
/// # #[cfg(feature = "sync")]
/// fn play() -> Result<(), Error> {
/// let memdb = MemDb::new();
/// memdb.create_collection("TestCollection");
/// let coll = memdb.collection("TestCollection")?;
/// coll.insert(doc!({ "name": "Tom", "age": 25 }))?;
/// let docs = coll.find_and_delete(query!({"name": "Tom"}))?;
/// Ok(())
/// }
/// ```
#[cfg(feature = "sync")]
pub fn find_and_delete(&self, query: Value) -> Result<Documents, Error> {
if !query.is_object() {
return Err(Error::MQError(String::from("Query must be a JSON object.")));
}
Engine::with_collection(self.data.clone()).find_and_delete(&query)
}
/// Delete documents that match search criteria.
///
/// ```
/// # #[cfg(not(feature = "sync"))]
/// use memquery::{doc, errors::Error, memdb::MemDb, query};
///
/// # #[cfg(not(feature = "sync"))]
/// async fn play() -> Result<(), Error> {
/// let memdb = MemDb::new();
/// memdb.create_collection("TestCollection").await;
/// let coll = memdb.collection("TestCollection").await?;
/// coll.insert(doc!({ "name": "Tom", "age": 25 })).await?;
/// let docs = coll.find_and_delete(query!({"name": "Tom"})).await?;
/// Ok(())
/// }
/// ```
#[cfg(not(feature = "sync"))]
pub async fn find_and_delete(&self, query: Value) -> Result<Documents, Error> {
if !query.is_object() {
return Err(Error::MQError(String::from("Query must be a JSON object.")));
}
Engine::with_collection(self.data.clone())
.find_and_delete(&query)
.await
}
}