static void initPLJavaClasses(void)
{
jfieldID tlField;
JNINativeMethod backendMethods[] =
{
{
"isCallingJava",
"()Z",
Java_org_postgresql_pljava_internal_Backend_isCallingJava
},
{
"isReleaseLingeringSavepoints",
"()Z",
Java_org_postgresql_pljava_internal_Backend_isReleaseLingeringSavepoints
},
{
"_getLibraryPath",
"()Ljava/lang/String;",
Java_org_postgresql_pljava_internal_Backend__1getLibraryPath
},
{
"_getConfigOption",
"(Ljava/lang/String;)Ljava/lang/String;",
Java_org_postgresql_pljava_internal_Backend__1getConfigOption
},
{
"_getStatementCacheSize",
"()I",
Java_org_postgresql_pljava_internal_Backend__1getStatementCacheSize
},
{
"_log",
"(ILjava/lang/String;)V",
Java_org_postgresql_pljava_internal_Backend__1log
},
{
"_clearFunctionCache",
"()V",
Java_org_postgresql_pljava_internal_Backend__1clearFunctionCache
},
{
"_isCreatingExtension",
"()Z",
Java_org_postgresql_pljava_internal_Backend__1isCreatingExtension
},
{ 0, 0, 0 }
};
Exception_initialize();
elog(DEBUG2, "checking for a PL/Java Backend class on the given classpath");
s_Backend_class = PgObject_getJavaClass(
"org/postgresql/pljava/internal/Backend");
elog(DEBUG2, "successfully loaded Backend class");
PgObject_registerNatives2(s_Backend_class, backendMethods);
tlField = PgObject_getStaticJavaField(s_Backend_class, "THREADLOCK", "Ljava/lang/Object;");
JNI_setThreadLock(JNI_getStaticObjectField(s_Backend_class, tlField));
Invocation_initialize();
Exception_initialize2();
SPI_initialize();
Type_initialize();
Function_initialize();
Session_initialize();
PgSavepoint_initialize();
XactListener_initialize();
SubXactListener_initialize();
SQLInputFromChunk_initialize();
SQLOutputToChunk_initialize();
SQLInputFromTuple_initialize();
SQLOutputToTuple_initialize();
InstallHelper_initialize();
s_setTrusted = PgObject_getStaticJavaMethod(s_Backend_class, "setTrusted", "(Z)V");
}
static void String_initialize_codec()
{
jmethodID string_intern = PgObject_getJavaMethod(s_String_class,
"intern", "()Ljava/lang/String;");
jstring empty = JNI_newStringUTF( "");
jclass scharset_class =
PgObject_getJavaClass("java/nio/charset/StandardCharsets");
jfieldID scharset_UTF_8 = PgObject_getStaticJavaField(scharset_class,
"UTF_8", "Ljava/nio/charset/Charset;");
jobject u8cs = JNI_getStaticObjectField(scharset_class, scharset_UTF_8);
jclass charset_class = JNI_getObjectClass(u8cs);
jmethodID charset_newDecoder = PgObject_getJavaMethod(charset_class,
"newDecoder", "()Ljava/nio/charset/CharsetDecoder;");
jmethodID charset_newEncoder = PgObject_getJavaMethod(charset_class,
"newEncoder", "()Ljava/nio/charset/CharsetEncoder;");
jclass decoder_class =
PgObject_getJavaClass("java/nio/charset/CharsetDecoder");
jclass encoder_class =
PgObject_getJavaClass("java/nio/charset/CharsetEncoder");
jmethodID encoder_abpc =
PgObject_getJavaMethod(encoder_class, "averageBytesPerChar", "()F");
jclass result_class = PgObject_getJavaClass("java/nio/charset/CoderResult");
jfieldID overflow = PgObject_getStaticJavaField(result_class, "OVERFLOW",
"Ljava/nio/charset/CoderResult;");
jfieldID underflow = PgObject_getStaticJavaField(result_class, "UNDERFLOW",
"Ljava/nio/charset/CoderResult;");
jclass buffer_class = PgObject_getJavaClass("java/nio/Buffer");
s_CharsetDecoder_instance =
JNI_newGlobalRef(JNI_callObjectMethod(u8cs, charset_newDecoder));
s_CharsetEncoder_instance =
JNI_newGlobalRef(JNI_callObjectMethod(u8cs, charset_newEncoder));
s_CharsetDecoder_decode = PgObject_getJavaMethod(decoder_class, "decode",
"(Ljava/nio/ByteBuffer;)Ljava/nio/CharBuffer;");
s_CharsetEncoder_encode = PgObject_getJavaMethod(encoder_class, "encode",
"(Ljava/nio/CharBuffer;Ljava/nio/ByteBuffer;Z)"
"Ljava/nio/charset/CoderResult;");
s_CharsetEncoder_averageBytesPerChar =
JNI_callFloatMethod(s_CharsetEncoder_instance, encoder_abpc);
s_CoderResult_OVERFLOW = JNI_newGlobalRef(
JNI_getStaticObjectField(result_class, overflow));
s_CoderResult_UNDERFLOW = JNI_newGlobalRef(
JNI_getStaticObjectField(result_class, underflow));
s_CoderResult_throwException = PgObject_getJavaMethod(result_class,
"throwException", "()V");
s_CharBuffer_class = (jclass)JNI_newGlobalRef(
PgObject_getJavaClass("java/nio/CharBuffer"));
s_CharBuffer_wrap = PgObject_getStaticJavaMethod(s_CharBuffer_class,
"wrap", "(Ljava/lang/CharSequence;)Ljava/nio/CharBuffer;");
s_Buffer_position = PgObject_getJavaMethod(buffer_class,
"position", "()I");
s_Buffer_remaining = PgObject_getJavaMethod(buffer_class,
"remaining", "()I");
s_the_empty_string = JNI_newGlobalRef(
JNI_callObjectMethod(empty, string_intern));
s_server_encoding = GetDatabaseEncoding();
s_two_step_conversion = PG_UTF8 != s_server_encoding;
uninitialized = false;
}
