Struct jni::objects::JMap
[−]
[src]
pub struct JMap<'a> { /* fields omitted */ }Wrapper for JObjects that implement java/util/Map. Provides methods to get
and set entries and a way to iterate over key/value pairs.
Looks up the class and method ids on creation rather than for every method call.
Methods
impl<'a> JMap<'a>[src]
fn from_env(env: &'a JNIEnv<'a>, obj: JObject<'a>) -> Result<JMap<'a>>[src]
Create a map from the environment and an object. This looks up the necessary class and method ids to call all of the methods on it so that exra work doesn't need to be done on every method call.
fn get(&self, key: JObject<'a>) -> Result<Option<JObject>>[src]
Look up the value for a key. Returns Some if it's found and None if
a null pointer would be returned.
fn put(&self, key: JObject<'a>, value: JObject<'a>) -> Result<Option<JObject>>[src]
Look up the value for a key. Returns Some with the old value if the
key already existed and None if it's a new key.
fn remove(&self, key: JObject<'a>) -> Result<Option<JObject<'a>>>[src]
Remove a value from the map. Returns Some with the removed value and
None if there was no value for the key.
fn iter(&'a self) -> Result<JMapIter<'a>>[src]
Get key/value iterator for the map. This is done by getting the
EntrySet from java and iterating over it.
Methods from Deref<Target = JObject<'a>>
fn into_inner(self) -> jobject[src]
Unwrap to the internal jni type.