Java OpenCSV - Ignoring Fields with a Certain Value











up vote
1
down vote

favorite












I'm parsing a dataset that uses N as an indicator of a null field.



Is there a native-OpenCSV way of handling this?



Currently I am replacing this indicator with empty String before I pass it into the CSVReader using a TranslatingReader.



I have migrated to OpenCSV 4.3.2 and am using CsvToBeanBuilder as per new best practice.



An excerpt of my code is below although it's not quite an MCVE as I'm sure the answer is as simple as a method I'm missing. But I make one if required.



try (Reader reader = new TranslatingReader(new BufferedReader(new InputStreamReader(new FileInputStream(file))))

{

    @Override

    public String translate(final String line)

    {

        return line.replace("\N", "");

    }

})

{

    return new CsvToBeanBuilder<T>(reader).withType(clazz).build().parse();

}





java opencsv







share|improve this question


























    up vote
    1
    down vote

    favorite












    I'm parsing a dataset that uses N as an indicator of a null field.



    Is there a native-OpenCSV way of handling this?



    Currently I am replacing this indicator with empty String before I pass it into the CSVReader using a TranslatingReader.



    I have migrated to OpenCSV 4.3.2 and am using CsvToBeanBuilder as per new best practice.



    An excerpt of my code is below although it's not quite an MCVE as I'm sure the answer is as simple as a method I'm missing. But I make one if required.



    try (Reader reader = new TranslatingReader(new BufferedReader(new InputStreamReader(new FileInputStream(file))))
    
{
    
    @Override
    
    public String translate(final String line)
    
    {
    
        return line.replace("\N", "");
    
    }
    
})
    
{
    
    return new CsvToBeanBuilder<T>(reader).withType(clazz).build().parse();
    
}





    java opencsv







    share|improve this question
























      up vote
      1
      down vote

      favorite









      up vote
      1
      down vote

      favorite











      I'm parsing a dataset that uses N as an indicator of a null field.



      Is there a native-OpenCSV way of handling this?



      Currently I am replacing this indicator with empty String before I pass it into the CSVReader using a TranslatingReader.



      I have migrated to OpenCSV 4.3.2 and am using CsvToBeanBuilder as per new best practice.



      An excerpt of my code is below although it's not quite an MCVE as I'm sure the answer is as simple as a method I'm missing. But I make one if required.



      try (Reader reader = new TranslatingReader(new BufferedReader(new InputStreamReader(new FileInputStream(file))))
      
{
      
    @Override
      
    public String translate(final String line)
      
    {
      
        return line.replace("\N", "");
      
    }
      
})
      
{
      
    return new CsvToBeanBuilder<T>(reader).withType(clazz).build().parse();
      
}





      java opencsv







      share|improve this question













      I'm parsing a dataset that uses N as an indicator of a null field.



      Is there a native-OpenCSV way of handling this?



      Currently I am replacing this indicator with empty String before I pass it into the CSVReader using a TranslatingReader.



      I have migrated to OpenCSV 4.3.2 and am using CsvToBeanBuilder as per new best practice.



      An excerpt of my code is below although it's not quite an MCVE as I'm sure the answer is as simple as a method I'm missing. But I make one if required.



      try (Reader reader = new TranslatingReader(new BufferedReader(new InputStreamReader(new FileInputStream(file))))
      
{
      
    @Override
      
    public String translate(final String line)
      
    {
      
        return line.replace("\N", "");
      
    }
      
})
      
{
      
    return new CsvToBeanBuilder<T>(reader).withType(clazz).build().parse();
      
}





      java opencsv




      java opencsv






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 10 at 17:33









      Jakg

      306110




      306110





























          active

          oldest

          votes











          Your Answer






          StackExchange.ifUsing("editor", function () {
          StackExchange.using("externalEditor", function () {
          StackExchange.using("snippets", function () {
          StackExchange.snippets.init();
          });
          });
          }, "code-snippets");

          StackExchange.ready(function() {
          var channelOptions = {
          tags: "".split(" "),
          id: "1"
          };
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function() {
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled) {
          StackExchange.using("snippets", function() {
          createEditor();
          });
          }
          else {
          createEditor();
          }
          });

          function createEditor() {
          StackExchange.prepareEditor({
          heartbeatType: 'answer',
          convertImagesToLinks: true,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: 10,
          bindNavPrevention: true,
          postfix: "",
          imageUploader: {
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          },
          onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          });


          }
          });














           

          draft saved


          draft discarded


















          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53241616%2fjava-opencsv-ignoring-fields-with-a-certain-value%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown






























          active

          oldest

          votes













          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes
















           

          draft saved


          draft discarded



















































           


          draft saved


          draft discarded














          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53241616%2fjava-opencsv-ignoring-fields-with-a-certain-value%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown





















































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown

































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown







          -

          Popular posts from this blog

          Florida Star v. B. J. F.

          Image
          Florida Star v. B. J. F. From Wikipedia, the free encyclopedia Jump to navigation Jump to search United States Supreme Court case Florida Star v. B. J. F. Supreme Court of the United States Argued March 21, 1989 Decided June 21, 1989 Full case name The Florida Star v. B. J. F. Citations 491 U.S. 524 ( more ) 109 S. Ct. 2603; 105 L. Ed. 2d 443; 1989 U.S. LEXIS 3120; 57 U.S.L.W. 4816; 16 Media L. Rep. 1801 Prior history The Florida Star v. B.J.F., 530 So.2d 286 (1988) Supreme Court of Florida; Florida Star v. B.J.F., 499 So.2d 883 (1986) Fla. Dist. Court of Appeals Holding Florida Stat. § 794.03 is unconstitutional to the extent it makes the truthful reporting of information that was a matter of public record unlawful, as it violates the First Amendment. Court membership Chief Justice William Rehnquist Associate Justices William J. Brennan Jr.  · Byron White Thurgood Marshall  · Harry Blac
          Read more

          Error while running script in elastic search , gateway timeout

          Image
          0 while running script in elastic search, I got 504 Gateway timeout error. { "query": { "bool": { "filter": { "script": { "script": " doc['creted_date'].date.getMonthOfYear() == 12 " } } } }, "aggs": { "test": { "date_histogram": { "field": "creted_date", "interval": "month", "format": "MMM" }, "aggs": { "cost": { "sum": { "field": "cost" } } }
          Read more

          Adding quotations to stringified JSON object values

          Image
          0 My stringified object data doesn't include quotation marks around object values, which errors when attempting JSON.parse() : '{ "affiliation": CORPORATE, "userId": 75c35d1c-5d12-4485-8fa8-b2f1551a3e6e }' I need the string to be: '{ "affiliation": "CORPORATE", "userId": "75c35d1c-5d12-4485-8fa8-b2f1551a3e6e" }' I'm using this regex to add quotes to the object keys: var newStr = str.replace(/(['"])?([a-z0-9A-Z_]+)(['"])?:/g, '"$2": '); For instance: '{ affiliation: CORPORATE }' to '{ "affiliation": CORPORATE }' There are only string values in my data, so I don't need to check value types. How can I alter my regex expression to add quotations to
          Read more