Interface TypeRegistry
- All Known Implementing Classes:
DefaultTypeRegistry
public interface TypeRegistry
The type registry manages the known value types.
- Author:
- Thomas Morgner
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Method Summary
Modifier and TypeMethodDescriptionconvertTo
(Type targetType, TypeValuePair valuePair) Checks whether the target type would accept the specified value object and value type.convertToArray
(Type type, Object value) convertToDate
(Type type1, Object value) Converts the object of the given type into a date.convertToLogical
(Type type1, Object value) Converts the object of the given type into a boolean.convertToNumber
(Type type1, Object value) Converts the object of the given type into a number.convertToNumberSequence
(Type type, Object value, boolean strictTypeChecks) Converts the given (type,value) pair into a numeric sequence.convertToSequence
(Type type, Object value) convertToText
(Type type1, Object value) (This conversion is used by the operator implementations.)getComparator
(Type type1, Type type2) Returns an comparator for the given types.
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Method Details
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getComparator
Returns an comparator for the given types.- Parameters:
type1
-type2
-- Returns:
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convertToNumber
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
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convertToText
(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
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convertToLogical
Converts the object of the given type into a boolean.- Parameters:
type1
-value
-- Returns:
- The value as Boolean or null.
- Throws:
EvaluationException
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convertToDate
Converts the object of the given type into a date.- Parameters:
type1
-value
-- Returns:
- The value as Date or null.
- Throws:
EvaluationException
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convertToNumberSequence
NumberSequence convertToNumberSequence(Type type, 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
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convertToSequence
- Throws:
EvaluationException
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convertToArray
- Throws:
EvaluationException
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convertTo
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
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guessTypeOfObject
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