How to use

toColumArray

method

in

co.cask.wrangler.parser.MigrateToV2

  String columns = getNextToken(tokenizer, "\n", "set columns", "name1, name2, ...", lineno);
  String cols[] = columns.split(",");
  transformed.add(String.format("set-headers %s;", toColumArray(cols)));
String columns = getNextToken(tokenizer, command, "column", lineno);
String cols[] = columns.split(",");
transformed.add(String.format("drop %s;", toColumArray(cols)));
} else if (cmd.equalsIgnoreCase("empty-or-null-columns")) {
 String columns = getNextToken(tokenizer, "\n", command, "columns", lineno);
 transformed.add(String.format("filter-empty-or-null %s;", toColumArray(columns.split(","))));
} else if (cmd.equalsIgnoreCase("regex-match")) {
 String column = getNextToken(tokenizer, command, "column", lineno);
String columns = getNextToken(tokenizer, command, "columns", lineno);
String expression = getNextToken(tokenizer, "\n", command, "sed-script", lineno);
transformed.add(String.format("find-and-replace %s %s;", toColumArray(columns.split(",")), quote(expression)));
String headers = getNextToken(tokenizer, "\n", command, "headers", lineno, true);
transformed.add(String.format("invoke-http %s %s %s;", quote(url),
               toColumArray(columnsOpt.split(",")), quote(headers)));
transformed.add(String.format("flatten %s;", toColumArray(cols.split(","))));
transformed.add(String.format("keep %s;", toColumArray(columns.split(","))));
String columnsStr = getNextToken(tokenizer, "\n", command, "columns", lineno);
transformed.add(String.format("write-as-json-object %s %s;", col(column),
               toColumArray(columnsStr.split(","))));