How to use

appendTail

method

in

org.hisp.dhis.commons.util.TextUtils

/**
 * Replaces the first n matches of the given regular expression starting
 * from the beginning of the given string.
 *
 * @param string the string to replace matches.
 * @param regex the regular expression to match the string against.
 * @param replacement the replacement string.
 * @param occurrences the number of matches to replace.
 * @return the replaced string.
 */
public static String replaceFirst( String string, final String regex, final String replacement, final int occurrences )
{
  StringBuffer sb = new StringBuffer();
  Matcher matcher = Pattern.compile( regex ).matcher( string );
  int c = 0;
  while ( matcher.find() && c < occurrences )
  {
    matcher.appendReplacement( sb, replacement );
    c++;
  }
  return appendTail( matcher, sb );
}

private String getSubstitutedVariablesForAnalyticsSql( String expression, ProgramIndicator programIndicator,
  Date startDate, Date endDate )
{
  if ( expression == null )
  {
    return null;
  }
  StringBuffer buffer = new StringBuffer();
  Matcher matcher = ProgramIndicator.VARIABLE_PATTERN.matcher( expression );
  while ( matcher.find() )
  {
    String var = matcher.group( 1 );
    String sql = getVariableAsSql( var, expression, programIndicator.getAnalyticsType(), startDate, endDate );
    if ( sql != null )
    {
      matcher.appendReplacement( buffer, sql );
    }
  }
  return TextUtils.appendTail( matcher, buffer );
}

expression = TextUtils.appendTail( matcher, sb );
expression = TextUtils.appendTail( matcher, sb );
return TextUtils.appendTail( matcher, sb );

return TextUtils.appendTail( matcher, buffer );

expression = TextUtils.appendTail( matcher, sb );
expression = TextUtils.appendTail( matcher, sb );
expression = TextUtils.appendTail( matcher, sb );

expression = TextUtils.appendTail( matcher, sb );
expression = TextUtils.appendTail( matcher, sb );
expression = TextUtils.appendTail( matcher, sb );
expression = TextUtils.appendTail( matcher, sb );

return TextUtils.appendTail( matcher, buffer );

expression = TextUtils.appendTail( matcher, sb );
expression = TextUtils.appendTail( matcher, sb );
expression = TextUtils.appendTail( matcher, sb );
expression = TextUtils.appendTail( matcher, sb );
return TextUtils.appendTail( matcher, sb );