Xpath problem not getting attribute for simple Xpath expressions

udaykumar

Hi
I have to extract the column values from html while extracting the attribute value is always showing ? symbol without any output

i have tried with many simple Xpaths like

//h:tr[@class='c0']/text()

but the output is not shown correctly and i have made changes to the process as mentioned in the thread of rapidminer forum names "Xpath commands working in google docs not in rapidminer"

My process is as follows

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<process version="5.3.015">
  <context>
    <input/>
    <output/>
    <macros/>
  </context>
  <operator activated="true" class="process" compatibility="5.3.015" expanded="true" name="Process">
    <process expanded="true">
      <operator activated="true" class="text:process_document_from_file" compatibility="5.3.002" expanded="true" height="76" name="Process Documents from Files" width="90" x="246" y="75">
        <list key="text_directories">
          <parameter key="all" value="/home/user/Desktop/march_04/single"/>
        </list>
        <parameter key="content_type" value="html"/>
        <process expanded="true">
          <operator activated="true" class="text:extract_information" compatibility="5.3.002" expanded="true" height="60" name="Extract Information" width="90" x="313" y="165">
            <parameter key="query_type" value="XPath"/>
            <list key="string_machting_queries"/>
            <list key="regular_expression_queries"/>
            <list key="regular_region_queries"/>
            <list key="xpath_queries">
              <parameter key="Temp" value="//h:section[@class='fixed']/text()"/>
            </list>
            <list key="namespaces"/>
            <list key="index_queries"/>
          </operator>
          <connect from_port="document" to_op="Extract Information" to_port="document"/>
          <connect from_op="Extract Information" from_port="document" to_port="document 1"/>
          <portSpacing port="source_document" spacing="0"/>
          <portSpacing port="sink_document 1" spacing="0"/>
          <portSpacing port="sink_document 2" spacing="0"/>
        </process>
      </operator>
      <operator activated="true" class="write_csv" compatibility="5.3.015" expanded="true" height="76" name="Write CSV" width="90" x="447" y="75">
        <parameter key="csv_file" value="/home/user/Desktop/march_04/crawl_web_output.csv"/>
      </operator>
      <connect from_op="Process Documents from Files" from_port="example set" to_op="Write CSV" to_port="input"/>
      <connect from_op="Write CSV" from_port="through" to_port="result 1"/>
      <portSpacing port="source_input 1" spacing="0"/>
      <portSpacing port="sink_result 1" spacing="0"/>
      <portSpacing port="sink_result 2" spacing="0"/>
    </process>
  </operator>
</process>