Package org.rosuda.REngine

Examples of org.rosuda.REngine.REXP

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          fs.copyToLocalFile(srcDel, src, dst);

          String dataFilePath = dst.toString();
       
          REXP eval = getConnection().eval(
              String.format("load(file=\"%s\")", dataFilePath));

        } catch (Exception e) {
          throw new HiveException(e);
        }
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      if (i < (arguments.length - 2))
        argument.append(",");
    }

    REXP rdata = null;
    try {
      rdata = getConnection().eval(function_name + "(" + argument.toString() + ")");
    } catch (Exception e) {
      ByteArrayOutputStream output = new ByteArrayOutputStream();
      e.printStackTrace(new PrintStream(output));
      throw new HiveException(new String(output.toByteArray())
          + " -- fail to eval : " + function_name + "("
          + argument.toString() + ")");
    }

    if (rdata != null) {
      try {
        if (rdata instanceof REXPInteger) {
          return new IntWritable(rdata.asInteger());
        } else if (rdata instanceof REXPString) {
          return new Text(rdata.asString());
        } else if (rdata instanceof REXPDouble) {
          return new DoubleWritable(rdata.asDouble());
        } else {
          throw new HiveException(
              "only support integer, string and double");
        }
      } catch (Exception e) {
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  private void loadExportedRScript(String export_name) throws HiveException {
    if (!funcSet.contains(export_name)) {

      try {
        REXP rhive_data = getConnection().eval(
            "Sys.getenv('RHIVE_DATA')");
        String srhive_data = null;

        if (rhive_data != null) {
          srhive_data = rhive_data.asString();
        }

        if (srhive_data == null || srhive_data == ""
            || srhive_data.length() == 0) {
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     * @param cmd
     * @return
     */
    @Override
    public RExpressionServer eval(String cmd) {
        REXP ret = null;
        try {
            ret = rConnection.eval(cmd);
        } catch (RserveException ex) {
            Logger.getLogger(RServerConnector.class.getName()).log(Level.SEVERE, null, ex);
        }
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Related Classes of org.rosuda.REngine.REXP

  • com.nexr.rhive.hive.udf.RUDAF$GenericRUDAF
  • com.nexr.rhive.hive.udf.RUDF
  • com.twosigma.beaker.r.rest.RShellRest
  • rstatistics.RServerConnector
  • rtools.R
  • weave.servlets.RScriptEngine
  • weave.servlets.RServiceUsingRserve
  • weave.utils.RUtils
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