Class TwoColumnValidator

java.lang.Object
  TwoColumnValidator

All Implemented Interfaces:

Validator

Direct Known Subclasses:

CodebookValidator, FrequencyValidator

public abstract class TwoColumnValidator
extends Object
implements Validator

An abstract class to provide support for validating dialogs in which the entered text is expected to represent some form of key/value pairs, one per line, separated by one or more spaces. Lines that have only whitespace will be ignored. Lines with only one token will be interpreted as having a single space (" ") as the input string, and the remaining token as the key. Lines with two tokens will be interpreted as key/value pairs. Inputs having a line with more than two tokens, or two or more lines using the same key, will be considered invalid. Parse returns an instance of LinkedHashMap<String, String>.

Constructor Summary

TwoColumnValidator()

Method Summary

Object

parse(String original) Parses the original text to form a map from string to string.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TwoColumnValidator

public TwoColumnValidator()

Method Detail

parse

public Object parse(String original)
             throws ValidatorException

Parses the original text to form a map from string to string. Relies on input conventions documented in the class overview.

Specified by:

parse in interface Validator

Parameters:

original - contents of the text area

Returns:

LinkedHashMap<String,String> instance with pairs given in order that they were entered.

Throws:

ValidatorException - if any line has more than two tokens, or if there are no nonempty lines.