JCR 1.0: 6.2.6 Property Type Conversion (Content Repository for Java Technology API)

6.2.6 Property Type Conversion

When a read or write of a property is performed with an access method or value of a different type than the property, an attempt will be made to automatically convert between types using the principles described in the following table:

From	To
	String	Binary	Date	Double	Long	Boolean	Name	Path	Reference
String		UTF-8	ISO 8601:2000. Throw on format error.	java.lang. Double. valueOf(String) (base 10 conversion)	java.lang. Long. valueOf(String) (base 10 conversion)	java.lang. Boolean. valueOf(String)	Throw on format error.	Throw on format error.	Throw on format error.
Binary	UTF-8. If binary is not UTF-8 behavior is implementation-specific		via String	via String	via String	via String	via String	via String	via String
Date	ISO 8601:2000	via String		Milliseconds since 1970-01-01T00:00:00Z. Throw on out-of- range.	Milliseconds since 1970-01-01T00:00:00Z. Throw on out-of- range.	Throws ValueFormat Exception	Throw ValueFormat Exception	Throw ValueFormat Exception	Throw ValueFormat Exception
Double	java.lang. Double. toString() (base 10 conversion)	via String	Milliseconds since 1970-01-01T00:00:00Z		Standard Java conversion	Throw ValueFormat Exception	Throw ValueFormat Exception	Throw ValueFormat Exception	Throw ValueFormat Exception
Long	java.lang. Long.toString() (base 10 conversion)	via String	Milliseconds since 1970-01-01T00:00:00Z	Standard Java conversion		Throw ValueFormat Exception	Throw ValueFormat Exception	Throw ValueFormat Exception	Throw ValueFormat Exception
Boolean	java.lang. Boolean. toString()	via String	Throw ValueFormat Exception	Throw ValueFormat Exception	Throw ValueFormat Exception		Throw ValueFormat Exception	Throw ValueFormat Exception	Throw ValueFormat Exception
Name	Direct	via String	Throw ValueFormat Exception	Throw ValueFormat Exception	Throw ValueFormat Exception	Throw ValueFormat Exception		Name becomes relative path	Throw ValueFormat Exception
Path	Direct	via String	Throw ValueFormat Exception	Throw ValueFormat Exception	Throw ValueFormat Exception	Throw ValueFormat Exception	If Path is relative and one element long and has no index, convert directly, other wise throw ValueFormat Exception		Throw ValueFormat Exception
Reference	Direct	via String	Throw ValueFormat Exception	Throw ValueFormat Exception	Throw ValueFormat Exception	Throw ValueFormat Exception	Throw ValueFormat Exception	Throw ValueFormat Exception