view release on metacpan or  search on metacpan

src/subversion/subversion/bindings/javahl/native/DiffSummaryReceiver.cpp  view on Meta::CPAN

  // Create a local frame for our references
  env->PushLocalFrame(LOCAL_FRAME_SIZE);
  if (JNIUtil::isJavaExceptionThrown())
    return SVN_NO_ERROR;

  // As Java method IDs will not change during the time this library
  // is loaded, they can be cached.
  static jmethodID callback = 0;
  jclass clazz;
  if (callback == 0)
    {
      // Initialize the method ID.
      clazz = env->FindClass(JAVA_PACKAGE "/callback/DiffSummaryCallback");
      if (JNIUtil::isJavaExceptionThrown())
        POP_AND_RETURN(SVN_NO_ERROR);

      callback = env->GetMethodID(clazz, "onSummary",
                                  "(L"JAVA_PACKAGE"/DiffSummary;)V");
      if (JNIUtil::isJavaExceptionThrown() || callback == 0)
        POP_AND_RETURN(SVN_NO_ERROR);
    }

  // Do some prep work for tranforming the DIFF parameter into a
  // Java equivalent.
  static jmethodID ctor = 0;
  clazz = env->FindClass(JAVA_PACKAGE "/DiffSummary");
  if (JNIUtil::isJavaExceptionThrown())
    POP_AND_RETURN(SVN_NO_ERROR);

  if (ctor == 0)
    {
      ctor = env->GetMethodID(clazz, "<init>",
                              "(Ljava/lang/String;"
                              "L"JAVA_PACKAGE"/DiffSummary$DiffKind;Z"
                              "L"JAVA_PACKAGE"/types/NodeKind;)V");
      if (JNIUtil::isJavaExceptionThrown() || ctor == 0)
        POP_AND_RETURN(SVN_NO_ERROR);
    }
  // Convert the arguments into their Java equivalent,
  jstring jPath = JNIUtil::makeJString(diff->path);
  if (JNIUtil::isJavaExceptionThrown())
    POP_AND_RETURN(SVN_NO_ERROR);

  jobject jNodeKind = EnumMapper::mapNodeKind(diff->node_kind);
  if (JNIUtil::isJavaExceptionThrown())
    POP_AND_RETURN(SVN_NO_ERROR);

  jobject jSummarizeKind = EnumMapper::mapSummarizeKind(diff->summarize_kind);
  if (JNIUtil::isJavaExceptionThrown())
    POP_AND_RETURN(SVN_NO_ERROR);

  // Actually tranform the DIFF parameter into a Java equivalent.
  jobject jDiffSummary = env->NewObject(clazz, ctor, jPath, jSummarizeKind,
                                        (jboolean) diff->prop_changed,
                                        jNodeKind);
  if (JNIUtil::isJavaExceptionThrown() || jDiffSummary == NULL)
    POP_AND_RETURN(SVN_NO_ERROR);

  // Invoke the Java DiffSummaryReceiver callback.
  env->CallVoidMethod(m_receiver, callback, jDiffSummary);
  // We return whether an exception was thrown or not.

  env->PopLocalFrame(NULL);
  return SVN_NO_ERROR;
}