Module jni::objects

Wrappers for object pointers returned from the JVM.

Structs

• AutoElements
  Auto-release wrapper for a mutable pointer to the elements of a JPrimitiveArray (such as JByteArray)
• AutoElementsCritical
  Auto-release wrapper for a mutable pointer to the elements of a JPrimitiveArray (such as JByteArray)
• AutoLocal
  Auto-delete wrapper for local refs.
• GlobalRef
  A global JVM reference. These are “pinned” by the garbage collector and are guaranteed to not get collected until released. Thus, this is allowed to outlive the JNIEnv that it came from and can be used in other threads.
• JByteBuffer
  Lifetime’d representation of a jobject that is an instance of the ByteBuffer Java class. Just a JObject wrapped in a new class.
• JClass
  Lifetime’d representation of a jclass. Just a JObject wrapped in a new class.
• JFieldID
  Wrapper around jfieldID that implements Send + Sync since method IDs are valid across threads (not tied to a JNIEnv).
• JList
  Wrapper for JObjects that implement java/util/List. Provides methods to get, add, and remove elements.
• JListIter
  An iterator over the keys and values in a java.util.List. See JList::iter for more information.
• JMap
  Wrapper for JObjects that implement java/util/Map. Provides methods to get and set entries and a way to iterate over key/value pairs.
• JMapIter
  An iterator over the keys and values in a map. See JMap::iter for more information.
• JMethodID
  Wrapper around jmethodID that implements Send + Sync since method IDs are valid across threads (not tied to a JNIEnv).
• JObject
  Wrapper around [sys::jobject] that adds a lifetime to ensure that the underlying JNI pointer won’t be accessible to safe Rust code if the object reference is released.
• JObjectArray
  Lifetime’d representation of a jobjectArray which wraps a JObject reference
• JPrimitiveArray
  Lifetime’d representation of a jarray which wraps a JObject reference
• JStaticFieldID
  Wrapper around jfieldID that implements Send + Sync since field IDs are valid across threads (not tied to a JNIEnv).
• JStaticMethodID
  Wrapper around jmethodID that implements Send + Sync since method IDs are valid across threads (not tied to a JNIEnv).
• JString
  Lifetime’d representation of a jstring. Just a JObject wrapped in a new class.
• JThrowable
  Lifetime’d representation of a jthrowable. Just a JObject wrapped in a new class.
• WeakRef
  A weak global JVM reference. These are global in scope like GlobalRef, and may outlive the JNIEnv they came from, but are not guaranteed to not get collected until released.

Enums

• JValueGen
  Rusty version of the JNI C jvalue enum. Used in Java method call arguments and returns.
• ReleaseMode
  ReleaseMode

Traits

• AsJArrayRaw
  Trait to access the raw jarray pointer for types that wrap an array reference
• TypeArray
  A sealed trait to define type array access/release for primitive JNI types

Type Definitions

• JBooleanArray
  Lifetime’d representation of a crate::sys::jbooleanArray which wraps a JObject reference
• JByteArray
  Lifetime’d representation of a crate::sys::jbyteArray which wraps a JObject reference
• JCharArray
  Lifetime’d representation of a crate::sys::jcharArray which wraps a JObject reference
• JDoubleArray
  Lifetime’d representation of a crate::sys::jdoubleArray which wraps a JObject reference
• JFloatArray
  Lifetime’d representation of a crate::sys::jfloatArray which wraps a JObject reference
• JIntArray
  Lifetime’d representation of a crate::sys::jintArray which wraps a JObject reference
• JLongArray
  Lifetime’d representation of a crate::sys::jlongArray which wraps a JObject reference
• JShortArray
  Lifetime’d representation of a crate::sys::jshortArray which wraps a JObject reference
• JValue
  A reference JValueGen.
• JValueOwned
  An owned JValueGen.