Examples of java.io.DataOutput.writeBytes()

java.io.DataOutput.writeBytes()
Writes a string to the output stream. For every character in the string s, taken in order, one byte is written to the output stream. If s is null, a NullPointerException is thrown.
If s.length is zero, then no bytes are written. Otherwise, the character s[0] is written first, then s[1], and so on; the last character written is s[s.length-1]. For each character, one byte is written, the low-order byte, in exactly the manner of the writeByte method . The high-order eight bits of each character in the string are ignored. @param s the string of bytes to be written. @throws IOException if an I/O error occurs.

      DataOutput outStream = (DataOutput)fs.create(descTbl.getResFile());
      Iterator<FieldSchema> iterCols = cols.iterator();
      while (iterCols.hasNext()) {
        // create a row per column
        FieldSchema col = iterCols.next();
        outStream.writeBytes(col.getName());
        outStream.write(separator);
        outStream.writeBytes(col.getType());
        outStream.write(separator);
        outStream.writeBytes(col.getComment() == null ? "" : col.getComment());
        outStream.write(terminator);

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      while (iterCols.hasNext()) {
        // create a row per column
        FieldSchema col = iterCols.next();
        outStream.writeBytes(col.getName());
        outStream.write(separator);
        outStream.writeBytes(col.getType());
        outStream.write(separator);
        outStream.writeBytes(col.getComment() == null ? "" : col.getComment());
        outStream.write(terminator);
      }

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        FieldSchema col = iterCols.next();
        outStream.writeBytes(col.getName());
        outStream.write(separator);
        outStream.writeBytes(col.getType());
        outStream.write(separator);
        outStream.writeBytes(col.getComment() == null ? "" : col.getComment());
        outStream.write(terminator);
      }


      if (tableName.equals(colPath)) {
        // also return the partitioning columns

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        // also return the partitioning columns
        List<FieldSchema> partCols = tbl.getPartCols();
        Iterator<FieldSchema> iterPartCols = partCols.iterator();
        while (iterPartCols.hasNext()) {
          FieldSchema col = iterPartCols.next();
          outStream.writeBytes(col.getName());
          outStream.write(separator);
          outStream.writeBytes(col.getType());
          outStream.write(separator);
          outStream.writeBytes(col.getComment() == null ? "" : col.getComment());
          outStream.write(terminator);

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        Iterator<FieldSchema> iterPartCols = partCols.iterator();
        while (iterPartCols.hasNext()) {
          FieldSchema col = iterPartCols.next();
          outStream.writeBytes(col.getName());
          outStream.write(separator);
          outStream.writeBytes(col.getType());
          outStream.write(separator);
          outStream.writeBytes(col.getComment() == null ? "" : col.getComment());
          outStream.write(terminator);
        }

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          FieldSchema col = iterPartCols.next();
          outStream.writeBytes(col.getName());
          outStream.write(separator);
          outStream.writeBytes(col.getType());
          outStream.write(separator);
          outStream.writeBytes(col.getComment() == null ? "" : col.getComment());
          outStream.write(terminator);
        }


        // if extended desc table then show the complete details of the table
        if (descTbl.isExt()) {

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          outStream.write(terminator);
          if (part != null) {
            // show partition information
            outStream.writeBytes("Detailed Partition Information");
            outStream.write(separator);
            outStream.writeBytes(part.getTPartition().toString());
            outStream.write(separator);
            // comment column is empty
            outStream.write(terminator);
          } else {
            // show table information

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            outStream.write(separator);
            // comment column is empty
            outStream.write(terminator);
          } else {
            // show table information
            outStream.writeBytes("Detailed Table Information");
            outStream.write(separator);
            outStream.writeBytes(tbl.getTTable().toString());
            outStream.write(separator);
            // comment column is empty
            outStream.write(terminator);

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      SortedSet<String> sortedTbls = new TreeSet<String>(tbls);
      Iterator<String> iterTbls = sortedTbls.iterator();


      while (iterTbls.hasNext()) {
        // create a row per table name
        outStream.writeBytes(iterTbls.next());
        outStream.write(terminator);
      }
      ((FSDataOutputStream)outStream).close();
    } catch (FileNotFoundException e) {
      LOG.info("show table: " + StringUtils.stringifyException(e));

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        if (roles != null && roles.size() > 0) {
          Path resFile = new Path(roleDDLDesc.getResFile());
          FileSystem fs = resFile.getFileSystem(conf);
          outStream = fs.create(resFile);
          for (Role role : roles) {
            outStream.writeBytes("role name:" + role.getRoleName());
            outStream.write(terminator);
          }
          ((FSDataOutputStream) outStream).close();
          outStream = null;
        }

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