A static utility class for common operations. More...

#include <Common.hpp>

Static Public Member Functions
template<class T >
static T	sum (T *values, jint len, T zero)
	Takes the sum of an array of values. More...

template<class T >
static T	product (T *values, jint len, T one)
	Takes the product of an array of values. More...

static void	throwNew (JNIEnv *env, std::exception &exception)
	Throws a new Java RuntimeException. More...

static jclass	findClass (JNIEnv env, const char name)
	Finds and loads a class. More...

static jfieldID	getFieldId (JNIEnv env, jclass clazz, const char name, const char *type)
	Gets a field identifier. More...

static jfieldID	getStaticFieldId (JNIEnv env, jclass clazz, const char name, const char *type)
	Gets a static field identifier. More...

static jmethodID	getMethodId (JNIEnv env, jclass clazz, const char name, const char *type)
	Gets a method identifier. More...

static jmethodID	getStaticMethodId (JNIEnv env, jclass clazz, const char name, const char *type)
	Gets a static method identifier. More...

static jweak	newWeakGlobalRef (JNIEnv *env, jobject object)
	Creates a global weak reference to the given object. More...

static void	deleteWeakGlobalRef (JNIEnv *env, jweak weak)
	Deletes a global weak reference. More...

static jdoubleArray	newDoubleArray (JNIEnv *env, jint len)
	Creates a Java array of type double[]. More...

static jintArray	newIntArray (JNIEnv *env, jint len)
	Creates a Java array of type int[]. More...

static jbyteArray	newByteArray (JNIEnv *env, jint len)
	Creates a Java array of type byte[]. More...

static jobjectArray	newObjectArray (JNIEnv *env, jint len, jclass clazz)
	Creates a Java array of the given component type. More...

static jstring	newStringUtf (JNIEnv env, const char utf)
	Creates a Java string. More...

Detailed Description

A static utility class for common operations.

Member Function Documentation

void Common::deleteWeakGlobalRef	(	JNIEnv *	env,
		jweak	weak
	)

static

Deletes a global weak reference.

Parameters

env	the JNI environment.
weak	the weak reference.

jclass Common::findClass	(	JNIEnv *	env,
		const char *	name
	)

static

Finds and loads a class.

Parameters

env	the JNI environment.
name	the class name.

Returns: the class.

jfieldID Common::getFieldId	(	JNIEnv *	env,
		jclass	clazz,
		const char *	name,
		const char *	type
	)

static

Gets a field identifier.

Parameters

env	the JNI environment.
clazz	the class.
name	the class name.
type	the type.

Returns: the field identifier.

jmethodID Common::getMethodId	(	JNIEnv *	env,
		jclass	clazz,
		const char *	name,
		const char *	type
	)

static

Gets a method identifier.

Parameters

env	the JNI environment.
clazz	the class.
name	the class name.
type	the type.

Returns: the method identifier.

jfieldID Common::getStaticFieldId	(	JNIEnv *	env,
		jclass	clazz,
		const char *	name,
		const char *	type
	)

static

Gets a static field identifier.

Parameters

env	the JNI environment.
clazz	the class.
name	the class name.
type	the type.

Returns: the static field identifier.

jmethodID Common::getStaticMethodId	(	JNIEnv *	env,
		jclass	clazz,
		const char *	name,
		const char *	type
	)

static

Gets a static method identifier.

Parameters

env	the JNI environment.
clazz	the class.
name	the class name.
type	the type.

Returns: the static method identifier.

jbyteArray Common::newByteArray	(	JNIEnv *	env,
		jint	len
	)

static

Creates a Java array of type byte[].

Parameters

env	the JNI environment.
len	the length.

Returns: the newly allocated byte array.

jdoubleArray Common::newDoubleArray	(	JNIEnv *	env,
		jint	len
	)

static

Creates a Java array of type double[].

Parameters

env	the JNI environment.
len	the length.

Returns: the newly allocated double array.

jintArray Common::newIntArray	(	JNIEnv *	env,
		jint	len
	)

static

Creates a Java array of type int[].

Parameters

env	the JNI environment.
len	the length.

Returns: the newly allocated int array.

jobjectArray Common::newObjectArray	(	JNIEnv *	env,
		jint	len,
		jclass	clazz
	)

static

Creates a Java array of the given component type.

Parameters

env	the JNI environment.
len	the length.
clazz	the component type.

Returns: the newly allocated Object array.

jstring Common::newStringUtf	(	JNIEnv *	env,
		const char *	utf
	)

static

Creates a Java string.

Parameters

env	the JNI environment.
utf	the null-terminated string.

Returns: the Java string.

jweak Common::newWeakGlobalRef	(	JNIEnv *	env,
		jobject	object
	)

static

Creates a global weak reference to the given object.

Parameters

env	the JNI environment.
object	the referent.

Returns: the global weak reference.

template<class T >

static T Common::product	(	T *	values,
		jint	len,
		T	one
	)

inlinestatic

Takes the product of an array of values.

Parameters

values	the values.
len	the length.
one	the representation of 1.

Returns: the product.

template<class T >

static T Common::sum	(	T *	values,
		jint	len,
		T	zero
	)

inlinestatic

Takes the sum of an array of values.

Parameters

values	the values.
len	the length.
zero	the representation of 0.

Returns: the sum.

void Common::throwNew	(	JNIEnv *	env,
		std::exception &	exception
	)

static

Throws a new Java RuntimeException.

Parameters

env	the JNI environment.
exception	the exception.

Static Public Member Functions

Detailed Description

Member Function Documentation