Program: 64914
Project: 64914
Buggy source:
/** 
 * @param type
 * @return context
 * @throws BirtException
 */
protected DataEngineContext newContext(int type,String fileName,String fileName2) throws BirtException {
  boolean useFolder=useFolderArchive();
switch (type) {
case DataEngineContext.MODE_GENERATION:
{
      try {
        if (useFolder == true)         archiveWriter=new FolderArchiveWriter(fileName);
 else         archiveWriter=new FileArchiveWriter(fileName);
        archiveWriter.initialize();
      }
 catch (      IOException e) {
        throw new IllegalArgumentException(e.getMessage());
      }
      DataEngineContext context=DataEngineContext.newInstance(DataEngineContext.MODE_GENERATION,null,null,archiveWriter);
      context.setTmpdir(this.getTempDir());
      return context;
    }
case DataEngineContext.MODE_PRESENTATION:
{
    try {
      if (useFolder == true)       archiveReader=new FolderArchiveReader(fileName);
 else       archiveReader=new FileArchiveReader(fileName);
      archiveReader.open();
    }
 catch (    IOException e) {
      throw new IllegalArgumentException(e.getMessage());
    }
    DataEngineContext context=DataEngineContext.newInstance(DataEngineContext.MODE_PRESENTATION,null,archiveReader,null);
    context.setTmpdir(this.getTempDir());
    return context;
  }
case DataEngineContext.MODE_UPDATE:
{
  try {
    if (useFolder == true)     archiveReader=new FolderArchiveReader(fileName);
 else     archiveReader=new FileArchiveReader(fileName);
    archiveReader.open();
    if (useFolder == true)     archiveWriter=new FolderArchiveWriter(fileName2);
 else     archiveWriter=new FileArchiveWriter(fileName2);
    archiveWriter.initialize();
  }
 catch (  IOException e) {
    throw new IllegalArgumentException(e.getMessage());
  }
  DataEngineContext context=DataEngineContext.newInstance(DataEngineContext.MODE_UPDATE,null,archiveReader,archiveWriter);
  context.setTmpdir(this.getTempDir());
  return context;
}
default :
throw new IllegalArgumentException("String_Node_Str" + type);
}
}

Fixed version (ground truth):
/** 
 * @param type
 * @return context
 * @throws BirtException
 */
protected DataEngineContext newContext(int type,String fileName,String fileName2) throws BirtException {
  boolean useFolder=useFolderArchive();
switch (type) {
case DataEngineContext.MODE_GENERATION:
{
      try {
        if (useFolder == true)         archiveWriter=new FolderArchiveWriter(fileName);
 else         archiveWriter=new FileArchiveWriter(fileName);
        archiveWriter.initialize();
      }
 catch (      IOException e) {
        throw new IllegalArgumentException(e.getMessage());
      }
      DataEngineContext context=DataEngineContext.newInstance(DataEngineContext.MODE_GENERATION,null,null,archiveWriter);
      context.setTmpdir(this.getTempDir());
      return context;
    }
case DataEngineContext.MODE_PRESENTATION:
{
    try {
      if (useFolder == true)       archiveReader=new FolderArchiveReader(fileName,true);
 else       archiveReader=new FileArchiveReader(fileName);
      archiveReader.open();
    }
 catch (    IOException e) {
      throw new IllegalArgumentException(e.getMessage());
    }
    DataEngineContext context=DataEngineContext.newInstance(DataEngineContext.MODE_PRESENTATION,null,archiveReader,null);
    context.setTmpdir(this.getTempDir());
    return context;
  }
case DataEngineContext.MODE_UPDATE:
{
  try {
    if (useFolder == true)     archiveReader=new FolderArchiveReader(fileName);
 else     archiveReader=new FileArchiveReader(fileName);
    archiveReader.open();
    if (useFolder == true)     archiveWriter=new FolderArchiveWriter(fileName2);
 else     archiveWriter=new FileArchiveWriter(fileName2);
    archiveWriter.initialize();
  }
 catch (  IOException e) {
    throw new IllegalArgumentException(e.getMessage());
  }
  DataEngineContext context=DataEngineContext.newInstance(DataEngineContext.MODE_UPDATE,null,archiveReader,archiveWriter);
  context.setTmpdir(this.getTempDir());
  return context;
}
default :
throw new IllegalArgumentException("String_Node_Str" + type);
}
}