All Known Implementing Classes:

DefaultTypeRegistry
```
public interface TypeRegistry
```
The type registry manages the known value types.

Author:

Thomas Morgner

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`TypeValuePair`	`convertTo(Type targetType, TypeValuePair valuePair)`	Checks whether the target type would accept the specified value object and value type.
`ArrayCallback`	`convertToArray(Type type, java.lang.Object value)`
`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, boolean strictTypeChecks)`	Converts the given (type,value) pair into a numeric sequence.
`Sequence`	`convertToSequence(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.
`Type`	`guessTypeOfObject(java.lang.Object o)`

- Method Detail
  - getComparator
```
ExtendedComparator getComparator(Type type1,
                                 Type type2)
```
    Returns an comparator for the given types.
    
    Parameters:
    
    type1 -
    
    type2 -
    
    Returns:
  - convertToNumber
```
java.lang.Number convertToNumber(Type type1,
                                 java.lang.Object value)
                          throws EvaluationException
```
    Converts the object of the given type into a number. If the object is not convertible, a NumberFormatException is thrown. (This conversion is used by the operator implementations.)
    
    Parameters:
    
    type1 -
    
    value -
    
    Returns:
    
    the value as number or ZERO if the value is unconvertible.
    
    Throws:
    
    TypeConversionException - if the type cannot be represented as number.
    
    EvaluationException
  - convertToText
```
java.lang.String convertToText(Type type1,
                               java.lang.Object value)
                        throws EvaluationException
```
    (This conversion is used by the operator implementations.)
    
    Parameters:
    
    type1 -
    
    value -
    
    Returns:
    
    the value as string or an empty string, if the value given is null.
    
    Throws:
    
    TypeConversionException
    
    EvaluationException
  - convertToLogical
```
java.lang.Boolean convertToLogical(Type type1,
                                   java.lang.Object value)
                            throws EvaluationException
```
    Converts the object of the given type into a boolean.
    
    Parameters:
    
    type1 -
    
    value -
    
    Returns:
    
    The value as Boolean or null.
    
    Throws:
    
    EvaluationException
  - convertToDate
```
java.util.Date convertToDate(Type type1,
                             java.lang.Object value)
                      throws EvaluationException
```
    Converts the object of the given type into a date.
    
    Parameters:
    
    type1 -
    
    value -
    
    Returns:
    
    The value as Date or null.
    
    Throws:
    
    EvaluationException
  - convertToNumberSequence
```
NumberSequence convertToNumberSequence(Type type,
                                       java.lang.Object value,
                                       boolean strictTypeChecks)
                                throws EvaluationException
```
    Converts the given (type,value) pair into a numeric sequence. If the flag "strictTypeChecks" is set to true, the value sequence will only evaluate numeric values. A non-strict sequence will treat text as zero and logical values as 0 or 1.
    
    Parameters:
    
    type -
    
    value -
    
    strictTypeChecks -
    
    Returns:
    
    Throws:
    
    TypeConversionException
    
    EvaluationException
  - convertToSequence
```
Sequence convertToSequence(Type type,
                           java.lang.Object value)
                    throws EvaluationException
```
    Throws:
    
    EvaluationException
  - convertToArray
```
ArrayCallback convertToArray(Type type,
                             java.lang.Object value)
                      throws EvaluationException
```
    Throws:
    
    EvaluationException
  - convertTo
```
TypeValuePair convertTo(Type targetType,
                        TypeValuePair valuePair)
                 throws EvaluationException
```
    Checks whether the target type would accept the specified value object and value type. (This conversion is used by the functions.)
    
    Parameters:
    
    targetType -
    
    valuePair -
    
    Throws:
    
    EvaluationException
  - guessTypeOfObject
```
Type guessTypeOfObject(java.lang.Object o)
```

Interface TypeRegistry

Method Summary

Method Detail

getComparator

convertToNumber

convertToText

convertToLogical

convertToDate

convertToNumberSequence

convertToSequence

convertToArray

convertTo

guessTypeOfObject