org.jfree.formula.typing
Class DefaultTypeRegistry

java.lang.Object
  org.jfree.formula.typing.DefaultTypeRegistry

All Implemented Interfaces:

TypeRegistry

public class DefaultTypeRegistry
extends java.lang.Object
implements TypeRegistry

Creation-Date: 02.11.2006, 12:46:08

Author:

Thomas Morgner

Constructor Summary

DefaultTypeRegistry()

Method Summary

TypeValuePair	convertTo(Type targetType, TypeValuePair valuePair) Checks, whether the target type would accept the specified value object and value type. This method is called for auto conversion of fonction parameters using the conversion type declared by the function metadata.
java.util.Date	convertToDate(Type type1, java.lang.Object value) Converts the object of the given type into a date.
java.lang.Boolean	convertToLogical(Type type1, java.lang.Object value) Converts the object of the given type into a boolean.
java.lang.Number	convertToNumber(Type type1, java.lang.Object value) converts the object of the given type into a number.
NumberSequence	convertToNumberSequence(Type type, java.lang.Object value)
java.lang.String	convertToText(Type type1, java.lang.Object value) (This conversion is used by the operator implementations.)
ExtendedComparator	getComparator(Type type1, Type type2) Returns an comparator for the given types.
protected java.text.NumberFormat	getDefaultNumberFormat()
Type	guessTypeOfObject(java.lang.Object o)
void	initialize(org.jfree.util.Configuration configuration, FormulaContext formulaContext)
protected java.text.NumberFormat[]	loadNumberFormats()

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultTypeRegistry

public DefaultTypeRegistry()

Method Detail

getComparator

public ExtendedComparator getComparator(Type type1,
                                        Type type2)

Returns an comparator for the given types.

Specified by:

getComparator in interface TypeRegistry

Parameters:

type1 -

type2 -

Returns:

convertToNumber

public java.lang.Number convertToNumber(Type type1,
                                        java.lang.Object value)
                                 throws TypeConversionException

converts the object of the given type into a number. If the object is not convertible, a NumberFormatException is thrown. If the given value is null or not parsable as number, return null.

Specified by:

convertToNumber in interface TypeRegistry

Parameters:

type1 -

value -

Returns:

Throws:

java.lang.NumberFormatException - if the type cannot be represented as number.

TypeConversionException - if the type cannot be represented as number.

initialize

public void initialize(org.jfree.util.Configuration configuration,
                       FormulaContext formulaContext)

loadNumberFormats

protected java.text.NumberFormat[] loadNumberFormats()

convertToText

public java.lang.String convertToText(Type type1,
                                      java.lang.Object value)
                               throws TypeConversionException

Description copied from interface: TypeRegistry

(This conversion is used by the operator implementations.)

Specified by:

convertToText in interface TypeRegistry

Returns:

the value as string or an empty string, if the value given is null.

Throws:

TypeConversionException

convertToLogical

public java.lang.Boolean convertToLogical(Type type1,
                                          java.lang.Object value)
                                   throws TypeConversionException

Description copied from interface: TypeRegistry

Converts the object of the given type into a boolean.

Specified by:

convertToLogical in interface TypeRegistry

Returns:

The value as Boolean or null.

Throws:

TypeConversionException

convertToDate

public java.util.Date convertToDate(Type type1,
                                    java.lang.Object value)
                             throws TypeConversionException

Description copied from interface: TypeRegistry

Converts the object of the given type into a date.

Specified by:

convertToDate in interface TypeRegistry

Returns:

The value as Date or null.

Throws:

TypeConversionException

getDefaultNumberFormat

protected java.text.NumberFormat getDefaultNumberFormat()

convertToNumberSequence

public NumberSequence convertToNumberSequence(Type type,
                                              java.lang.Object value)
                                       throws TypeConversionException

Specified by:

convertToNumberSequence in interface TypeRegistry

Throws:

TypeConversionException

convertTo

public TypeValuePair convertTo(Type targetType,
                               TypeValuePair valuePair)
                        throws TypeConversionException

Checks, whether the target type would accept the specified value object and value type.
This method is called for auto conversion of fonction parameters using the conversion type declared by the function metadata.

Specified by:

convertTo in interface TypeRegistry

Parameters:

targetType -

valuePair -

Throws:

TypeConversionException

guessTypeOfObject

public Type guessTypeOfObject(java.lang.Object o)

Specified by:

guessTypeOfObject in interface TypeRegistry