org.axiondb.types

Class BaseNumberDataType

public abstract class BaseNumberDataType extends BaseDataType

An abstract base DataTypefor Numbertypes.

Version: $Revision: 1.9 $ $Date: 2005/05/02 22:29:40 $

Author: Rodney Waldhoff

Constructor Summary
	BaseNumberDataType()

Method Summary
boolean	accepts(Object value) Returns `true` iff value is `String` that can be `converted`without exception, `null`, or a `Number Number`.
Object	convert(Object value) Returns value if value is `null` and throws IllegalArgumentExceptionotherwise.
boolean	supportsSuccessor() This base implementation returns `true`.
protected Number	toNumber(Object value)

Constructor Detail

BaseNumberDataType

public BaseNumberDataType()

Method Detail

accepts

public boolean accepts(Object value)

Returns true iff value is String that can be convertedwithout exception, null, or a Number Number.

convert

public Object convert(Object value)

Returns value if value is null and throws IllegalArgumentExceptionotherwise. Subclasses should override this method and call super.convert(value) as their last case.

Throws: AxionException

supportsSuccessor

public boolean supportsSuccessor()

This base implementation returns true.

toNumber

protected Number toNumber(Object value)