Package javax.jdo.identity
Class CharIdentity
java.lang.Object
javax.jdo.identity.SingleFieldIdentity
javax.jdo.identity.CharIdentity
- All Implemented Interfaces:
Externalizable
,Serializable
,Comparable
This class is for identity with a single character field.
- Version:
- 2.0
- See Also:
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Field Summary
FieldsModifier and TypeFieldDescriptionprivate char
The key.private static I18NHelper
The Internationalization message helper.Fields inherited from class javax.jdo.identity.SingleFieldIdentity
hashCode, keyAsObject
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Constructor Summary
ConstructorsConstructorDescriptionConstructor only for Externalizable.CharIdentity
(Class pcClass, char key) Constructor with class and key.CharIdentity
(Class pcClass, Character key) Constructor with class and key.CharIdentity
(Class pcClass, String str) Constructor with class and key. -
Method Summary
Modifier and TypeMethodDescriptionint
Determine the ordering of identity objects.private void
construct
(char key) protected Object
Create the key as an Object.boolean
Determine if the other object represents the same object id.char
getKey()
Return the key.void
Read this object.toString()
Return the String form of the key.void
Write this object.Methods inherited from class javax.jdo.identity.SingleFieldIdentity
assertKeyNotNull, compare, getKeyAsObject, getTargetClass, getTargetClassName, hashClassName, hashCode, setKeyAsObject
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Field Details
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msg
The Internationalization message helper. -
key
private char keyThe key.
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Constructor Details
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CharIdentity
Constructor with class and key.- Parameters:
pcClass
- the target classkey
- the key
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CharIdentity
Constructor with class and key.- Parameters:
pcClass
- the target classkey
- the key
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CharIdentity
Constructor with class and key. The String must have exactly one character.- Parameters:
pcClass
- the target classstr
- the key
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CharIdentity
public CharIdentity()Constructor only for Externalizable.
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Method Details
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construct
private void construct(char key) -
getKey
public char getKey()Return the key.- Returns:
- the key
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toString
Return the String form of the key. -
equals
Determine if the other object represents the same object id.- Overrides:
equals
in classSingleFieldIdentity
- Parameters:
obj
- the other object- Returns:
- true if both objects represent the same object id
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compareTo
Determine the ordering of identity objects.- Parameters:
o
- Other identity- Returns:
- The relative ordering between the objects
- Since:
- 2.2
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createKeyAsObject
Create the key as an Object.- Overrides:
createKeyAsObject
in classSingleFieldIdentity
- Returns:
- the key as an Object
- Since:
- 2.0
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writeExternal
Write this object. Write the superclass first.- Specified by:
writeExternal
in interfaceExternalizable
- Overrides:
writeExternal
in classSingleFieldIdentity
- Parameters:
out
- the output- Throws:
IOException
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readExternal
Read this object. Read the superclass first.- Specified by:
readExternal
in interfaceExternalizable
- Overrides:
readExternal
in classSingleFieldIdentity
- Parameters:
in
- the input- Throws:
IOException
ClassNotFoundException
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