MPD  0.20.6
Class.hxx
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1 /*
2  * Copyright (C) 2010-2011 Max Kellermann <max.kellermann@gmail.com>
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
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29 
30 #ifndef JAVA_CLASS_HXX
31 #define JAVA_CLASS_HXX
32 
33 #include "Ref.hxx"
34 
35 #include <assert.h>
36 
37 namespace Java {
41  class Class : public Java::LocalRef<jclass> {
42  public:
43  Class(JNIEnv *env, jclass cls)
44  :LocalRef<jclass>(env, cls) {}
45 
46  Class(JNIEnv *env, const char *name)
47  :LocalRef<jclass>(env, env->FindClass(name)) {}
48  };
49 
53  class TrivialClass : public TrivialRef<jclass> {
54  public:
55  void Find(JNIEnv *env, const char *name) {
56  assert(env != nullptr);
57  assert(name != nullptr);
58 
59  jclass cls = env->FindClass(name);
60  assert(cls != nullptr);
61 
62  Set(env, cls);
63  env->DeleteLocalRef(cls);
64  }
65 
66  bool FindOptional(JNIEnv *env, const char *name) {
67  assert(env != nullptr);
68  assert(name != nullptr);
69 
70  jclass cls = env->FindClass(name);
71  if (cls == nullptr) {
72  env->ExceptionClear();
73  return false;
74  }
75 
76  Set(env, cls);
77  env->DeleteLocalRef(cls);
78  return true;
79  }
80  };
81 }
82 
83 #endif
void Set(JNIEnv *env, jclass_value)
Obtain a global reference on the specified object and store it.
Definition: Ref.hxx:145
Wrapper for a global "jclass" reference.
Definition: Class.hxx:53
Wrapper for a local "jclass" reference.
Definition: Class.hxx:41
Class(JNIEnv *env, const char *name)
Definition: Class.hxx:46
Container for a global reference to a JNI object that gets initialised and deinitialised explicitly...
Definition: Ref.hxx:128
void Find(JNIEnv *env, const char *name)
Definition: Class.hxx:55
bool FindOptional(JNIEnv *env, const char *name)
Definition: Class.hxx:66
Class(JNIEnv *env, jclass cls)
Definition: Class.hxx:43
Definition: Class.hxx:37
Hold a local reference on a JNI object.
Definition: Ref.hxx:44
const Partition const char * name
Definition: Count.hxx:34