org.jbeans.converters
Class BooleanTypeConverter

java.lang.Object
  |
  +--org.jbeans.BaseTypeConverter
        |
        +--org.jbeans.converters.BooleanTypeConverter

All Implemented Interfaces:

TypeConverter

public class BooleanTypeConverter

extends BaseTypeConverter

This class is the type covnerter for booleans. It only contains one method that converts a string to a boolean. All other conversion is handled by the BaseTypeConverter class. Therefore, this class will handle all the conversions described in the TypeConverter interface except conversion from an array to an object when the array has a length greater than one. This is the same deficiency that BaseTypeConverter posses.

Author:

Brian Pontarelli

Constructor Summary

BooleanTypeConverter()

Method Summary

Object

convertString(String value, Class convertTo) Converts the given string to a boolean.

Methods inherited from class org.jbeans.BaseTypeConverter

convert, convertArray, convertArrayToArray, convertStringToArray, convertToArray

Methods inherited from class java.lang.Object

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

Constructor Detail

BooleanTypeConverter

public BooleanTypeConverter()

Method Detail

convertString

public Object convertString(String value,
                            Class convertTo)
                     throws TypeConversionException

Converts the given string to a boolean. If the convertTo type is Boolean.TYPE or the primitive, then this method will convert the string to a Boolean object and NEVER return null. This way there are no exceptions when attempting to set a primitive type to null. If the convertTo type is an array, then this method calls convertToArray. If the convertTo type is not Boolean.TYPE it is ignored. If the convertTo type is not Boolean.TYPE and the passed in string is either null, empty or contains only white space, this method returns null.

Overrides:

convertString in class BaseTypeConverter

Parameters:

value - The string value to convert

convertTo - The type to convert the string to should be either Boolean.class or Boolean.TYPE, or an array of either one of those.

Returns:

A Boolean object containing the boolean value of the string (which must conform to the java.lang.Boolean#valueOf() method) or a false Boolean obect if the convertTo type is Boolean.TYPE and the string is null, empty or only whitespace.

Throws:

TypeConversionException - If the value is an invalid boolean expression or if the convertTo type is an array and there was a problem converting the string to an array