Method getMacroFile

src/org/apache/pig/parser/QueryParserDriver.java:398–437

(String fname)

    }

    private FetchFileRet getMacroFile(String fname) {
        FetchFileRet localFileRet = null;
        try {
            if (fnameMap.get(fname) != null) {
                localFileRet = fnameMap.get(fname);
            } else {
              try {
                File localFile = QueryParserUtils.getFileFromImportSearchPath(fname);
                localFileRet = localFile == null ?
                        FileLocalizer.fetchFile(pigContext.getProperties(), fname)
                        : new FetchFileRet(localFile.getCanonicalFile(), false);
              } catch (FileNotFoundException e) {
                // ignore this since we'll attempt to load as a resource before failing
                LOG.debug(String.format("Macro file %s was not found", fname));
              }

              // try loading the macro file as a resource in case it is packaged in a registered jar
              if (localFileRet == null) {
                LOG.debug(String.format("Attempting to load macro file %s as a resource", fname));

                try
                {
                  localFileRet = FileLocalizer.fetchResource(fname);
                  LOG.debug(String.format("Found macro file %s as resource", fname));
                }
                catch (ResourceNotFoundException e)
                {
                  LOG.debug(String.format("Macro file %s was not found as resource either", fname));
                  LOG.error(String.format("Failed to find macro file %s", fname));
                  throw new ExecException("file '" + fname + "' does not exist.", 101, PigException.INPUT);
                }
              }

              fnameMap.put(fname, localFileRet);
            }
        } catch (IOException e) {
            throw new RuntimeException("Unable to fetch macro file '" + fname + "'", e);
        }
        return localFileRet;
    }

    /*
     * MacroDef node has two child nodes: