Package javax.jdo.identity
Class StringIdentity
- java.lang.Object
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- javax.jdo.identity.SingleFieldIdentity
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- javax.jdo.identity.StringIdentity
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- All Implemented Interfaces:
Externalizable
,Serializable
,Comparable
public class StringIdentity extends SingleFieldIdentity
This class is for identity with a single String field.- Version:
- 2.0
- See Also:
- Serialized Form
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Field Summary
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Fields inherited from class javax.jdo.identity.SingleFieldIdentity
hashCode, keyAsObject, msg
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Constructor Summary
Constructors Constructor Description StringIdentity()
Constructor only for Externalizable.StringIdentity(Class pcClass, String key)
Constructor with class and key.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description int
compareTo(Object o)
Determine the ordering of identity objects.boolean
equals(Object obj)
Determine if the other object represents the same object id.String
getKey()
Return the key.void
readExternal(ObjectInput in)
Read this object.String
toString()
Return the String form of the key.void
writeExternal(ObjectOutput out)
Write this object.-
Methods inherited from class javax.jdo.identity.SingleFieldIdentity
assertKeyNotNull, compare, createKeyAsObject, getKeyAsObject, getTargetClass, getTargetClassName, hashClassName, hashCode, setKeyAsObject
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Method Detail
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getKey
public String getKey()
Return the key.- Returns:
- the key
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toString
public String toString()
Return the String form of the key.
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equals
public boolean equals(Object obj)
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
public int compareTo(Object o)
Determine the ordering of identity objects.- Parameters:
o
- Other identity- Returns:
- The relative ordering between the objects
- Since:
- 2.2
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writeExternal
public void writeExternal(ObjectOutput out) throws IOException
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
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException
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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