Struct libreda_db::property_storage::PropertyStore

pub struct PropertyStore<K>where
    K: Hash + Eq,{
    content: HashMap<K, PropertyValue>,
}

Look-up table for property values.

Fields

content: HashMap<K, PropertyValue>

Implementations

impl<K: Hash + Eq> PropertyStore<K>

pub fn new() -> Self

Create an empty property store.

pub fn insert<V: Into<PropertyValue>>( &mut self, key: K, value: V ) -> Option<PropertyValue>

Insert a property. Returns the old property value if there was already a property stored under this key.

pub fn get<Q>(&self, key: &Q) -> Option<&PropertyValue>where K: Borrow<Q>, Q: Eq + Hash + ?Sized,

Get a property value by the property key.

pub fn contains_key<Q>(&self, key: &Q) -> boolwhere K: Borrow<Q>, Q: Eq + Hash + ?Sized,

Check if the key is contained in this property store.

pub fn get_string<Q>(&self, key: &Q) -> Option<&RcString>where K: Borrow<Q>, Q: Eq + Hash + ?Sized,

Get a string property value by key. If the property value is not a string None is returned.

Trait Implementations

impl<K> Clone for PropertyStore<K>where K: Hash + Eq + Clone,

fn clone(&self) -> PropertyStore<K>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<K> Debug for PropertyStore<K>where K: Hash + Eq + Debug,

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<K: Hash + Eq> Default for PropertyStore<K>

fn default() -> Self

Returns the “default value” for a type.

impl<'de, K> Deserialize<'de> for PropertyStore<K>where K: Hash + Eq + Deserialize<'de>,

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<K> Serialize for PropertyStore<K>where K: Hash + Eq + Serialize,

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>where __S: Serializer,

Serialize this value into the given Serde serializer.