Struct jni::objects::JObject

#[repr(transparent)]
pub struct JObject<'a> { /* fields omitted */ }

Wrapper around sys::jobject that adds a lifetime. This prevents it from outliving the context in which it was acquired and getting GC’d out from under us. It matches C’s representation of the raw pointer, so it can be used in any of the extern function argument positions that would take a jobject.

Most other types in the objects module deref to this, as they do in the C representation.

Implementations

impl<'a> JObject<'a>

pub fn into_inner(self) -> jobject

Unwrap to the internal jni type.

pub fn null() -> JObject<'a>

Creates a new null object

Trait Implementations

impl<'a> Clone for JObject<'a>

fn clone(&self) -> JObject<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for JObject<'a>

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

Formats the value using the given formatter.

impl<'a> Deref for JObject<'a>

type Target = jobject

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<'a, 'b> Desc<'a, JClass<'a>> for JObject<'b>

fn lookup(self, env: &JNIEnv<'a>) -> Result<JClass<'a>>

Look up the concrete type from the JVM.

impl<'a> From<&'a AutoLocal<'a, '_>> for JObject<'a>

fn from(other: &'a AutoLocal<'_, '_>) -> JObject<'a>

Performs the conversion.

impl<'a> From<&'a GlobalRef> for JObject<'a>

fn from(other: &'a GlobalRef) -> JObject<'a>

Performs the conversion.

impl<'a> From<*mut _jobject> for JObject<'a>

fn from(other: jobject) -> Self

Performs the conversion.

impl<'a> From<JByteBuffer<'a>> for JObject<'a>

fn from(other: JByteBuffer<'_>) -> JObject<'_>

Performs the conversion.

impl<'a> From<JClass<'a>> for JObject<'a>

fn from(other: JClass<'_>) -> JObject<'_>

Performs the conversion.

impl<'a: 'b, 'b> From<JList<'a, 'b>> for JObject<'a>

fn from(other: JList<'a, 'b>) -> JObject<'a>

Performs the conversion.

impl<'a: 'b, 'b> From<JMap<'a, 'b>> for JObject<'a>

fn from(other: JMap<'a, 'b>) -> JObject<'a>

Performs the conversion.

impl<'a> From<JObject<'a>> for JThrowable<'a>

fn from(other: JObject<'_>) -> JThrowable<'_>

Performs the conversion.

impl<'a> From<JObject<'a>> for JClass<'a>

This conversion assumes that the JObject is a pointer to a class object.

fn from(other: JObject<'_>) -> JClass<'_>

Performs the conversion.

impl<'a> From<JObject<'a>> for JString<'a>

fn from(other: JObject<'_>) -> JString<'_>

Performs the conversion.

impl<'a> From<JObject<'a>> for JByteBuffer<'a>

fn from(other: JObject<'_>) -> JByteBuffer<'_>

Performs the conversion.

impl<'a> From<JString<'a>> for JObject<'a>

fn from(other: JString<'_>) -> JObject<'_>

Performs the conversion.

impl<'a> From<JThrowable<'a>> for JObject<'a>

fn from(other: JThrowable<'_>) -> JObject<'_>

Performs the conversion.

impl<'a> TryFrom<JValue<'a>> for JObject<'a>

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: JValue<'a>) -> Result<Self>

Performs the conversion.

impl<'a> Copy for JObject<'a>