service/resource-container/android/resource-container/src/main/jni/util/JavaClasses.cpp

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   7  * Licensed under the Apache License, Version 2.0 (the "License");
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   9  * You may obtain a copy of the License at
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  20
  21 #include "JavaClasses.h"
  22
  23 #include "JNIEnvWrapper.h"
  24
  25 jclass g_cls_String;
  26 jclass g_cls_Integer;
  27 jclass g_cls_Double;
  28 jclass g_cls_Boolean;
  29
  30 jclass g_cls_ArrayList;
  31 jclass g_cls_Set;
  32 jclass g_cls_Map;
  33 jclass g_cls_MapEntry;
  34 jclass g_cls_Iterator;
  35
  36 jmethodID g_method_Boolean_booleanValue;
  37 jmethodID g_method_Integer_intValue;
  38 jmethodID g_method_Double_doubleValue;
  39
  40 jmethodID g_method_Collection_add;
  41
  42 jmethodID g_method_Set_iterator;
  43
  44 jmethodID g_method_Map_entrySet;
  45 jmethodID g_method_Map_put;
  46
  47 jmethodID g_method_MapEntry_getKey;
  48 jmethodID g_method_MapEntry_getValue;
  49
  50 jmethodID g_method_Iterator_hasNext;
  51 jmethodID g_method_Iterator_next;
  52
  53 jmethodID g_ctor_Boolean;
  54 jmethodID g_ctor_Integer;
  55 jmethodID g_ctor_Double;
  56
  57 jmethodID g_ctor_ArrayList;
  58
  59 namespace
  60 {
  61     inline void initPrimitiveTypes(JNIEnvWrapper* env)
  62     {
  63         g_cls_Boolean = env->FindClassAsGlobalRef(CLS_NAME_BOOLEAN);
  64         g_ctor_Boolean = env->GetConstructorID(g_cls_Boolean, "(Z)V");
  65         g_method_Boolean_booleanValue = env->GetMethodID(g_cls_Boolean, "booleanValue", "()Z");
  66
  67         g_cls_Integer = env->FindClassAsGlobalRef(CLS_NAME_INTEGER);
  68         g_ctor_Integer = env->GetConstructorID(g_cls_Integer, "(I)V");
  69         g_method_Integer_intValue = env->GetMethodID(g_cls_Integer, "intValue", "()I");
  70
  71         g_cls_Double = env->FindClassAsGlobalRef(CLS_NAME_DOUBLE);
  72         g_ctor_Double = env->GetConstructorID(g_cls_Double, "(D)V");
  73         g_method_Double_doubleValue = env->GetMethodID(g_cls_Double, "doubleValue", "()D");
  74
  75         g_cls_String = env->FindClassAsGlobalRef(CLS_NAME_STRING);
  76     }
  77 }
  78
  79 void initJavaClasses(JNIEnvWrapper* env)
  80 {
  81     initPrimitiveTypes(env);
  82
  83     auto clsCollection = env->FindClass(CLS_NAME_COLLECTION);
  84     g_method_Collection_add = env->GetMethodID(clsCollection, "add",
  85             "(" AS_SIG(CLS_NAME_OBJECT) ")Z");
  86
  87     g_cls_ArrayList = env->FindClassAsGlobalRef(CLS_NAME_ARRAY_LIST);
  88     g_ctor_ArrayList = env->GetConstructorID(g_cls_ArrayList, "()V");
  89
  90     g_cls_Set = env->FindClassAsGlobalRef(CLS_NAME_SET);
  91     g_method_Set_iterator = env->GetMethodID(g_cls_Set, "iterator", "()" AS_SIG(CLS_NAME_ITERATOR));
  92
  93     g_cls_Map = env->FindClassAsGlobalRef(CLS_NAME_MAP);
  94     g_method_Map_entrySet = env->GetMethodID(g_cls_Map, "entrySet", "()" AS_SIG(CLS_NAME_SET));
  95     g_method_Map_put = env->GetMethodID(g_cls_Map, "put",
  96             "(" AS_SIG(CLS_NAME_OBJECT) AS_SIG(CLS_NAME_OBJECT) ")" AS_SIG(CLS_NAME_OBJECT));
  97
  98     g_cls_MapEntry = env->FindClassAsGlobalRef(CLS_NAME_MAP_ENTRY);
  99     g_method_MapEntry_getKey = env->GetMethodID(g_cls_MapEntry, "getKey",
 100             "()" AS_SIG(CLS_NAME_OBJECT));
 101     g_method_MapEntry_getValue = env->GetMethodID(g_cls_MapEntry, "getValue",
 102             "()" AS_SIG(CLS_NAME_OBJECT));
 103
 104     g_cls_Iterator = env->FindClassAsGlobalRef(CLS_NAME_ITERATOR);
 105     g_method_Iterator_hasNext = env->GetMethodID(g_cls_Iterator, "hasNext", "()Z");
 106     g_method_Iterator_next = env->GetMethodID(g_cls_Iterator, "next", "()" AS_SIG(CLS_NAME_OBJECT));
 107 }
 108
 109 void clearJavaClasses(JNIEnvWrapper* env)
 110 {
 111     env->DeleteGlobalRef(g_cls_Boolean);
 112     env->DeleteGlobalRef(g_cls_Integer);
 113     env->DeleteGlobalRef(g_cls_Double);
 114     env->DeleteGlobalRef(g_cls_String);
 115     env->DeleteGlobalRef(g_cls_Set);
 116     env->DeleteGlobalRef(g_cls_Map);
 117     env->DeleteGlobalRef(g_cls_MapEntry);
 118     env->DeleteGlobalRef(g_cls_Iterator);
 119 }