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java.lang.Objectcom.coyotegulch.jisp.KeyObject
com.coyotegulch.jisp.LongKey
public class LongKey
LongKey
defines a key based on the long
type.
KeyObject
,
ObjectIndex
,
Serialized FormField Summary |
---|
Fields inherited from class com.coyotegulch.jisp.KeyObject |
---|
KEY_EQUAL, KEY_ERROR, KEY_LESS, KEY_MORE |
Constructor Summary | |
---|---|
LongKey()
Creates a blank LongKey (value = 0). |
|
LongKey(long key_value)
Creates a new LongKey with a specific value. |
Method Summary | |
---|---|
int |
compareTo(KeyObject key)
Compares the invoking LongKey to key , returning one of the
KEY_* constants based on the relationship of the two keys. |
int |
hashCode()
Returns a hash code value for the object, which is, in effect, the the value of the key. |
long |
longValue()
Returns the long value of a LongKey . |
KeyObject |
makeNullKey()
Returns a "null" (i.e., blank) LongKey , to be used as a space-holder in certain kinds of
ObjectIndexes . |
void |
readExternal(java.io.ObjectInput in)
LongKey implements the readExternal method to restore its contents. |
java.lang.String |
toString()
Returns the String representation of a LongKey . |
void |
writeExternal(java.io.ObjectOutput out)
LongKey implements the writeExternal method to save its
contents. |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public LongKey(long key_value)
LongKey
with a specific value.
keyValue
- value of the newly-created key.public LongKey()
LongKey
(value = 0).
Method Detail |
---|
public int compareTo(KeyObject key)
LongKey
to key
, returning one of the
KEY_*
constants based on the relationship of the two keys.
compareTo
in class KeyObject
key
- The LongKey
value to be compared against the invoking key.
KEY_*
constants based on the relationship of the two keys.public KeyObject makeNullKey()
LongKey
, to be used as a space-holder in certain kinds of
ObjectIndexes
. The "null" value is 0xFFFFFFFFFFFFFFFF (all ones).
makeNullKey
in class KeyObject
LongKey
constant.BTreeIndex
public void writeExternal(java.io.ObjectOutput out) throws java.io.IOException
LongKey
implements the writeExternal
method to save its
contents.
java.io.IOException
public void readExternal(java.io.ObjectInput in) throws java.io.IOException, java.lang.ClassNotFoundException
LongKey
implements the readExternal method to restore its contents.
java.io.IOException
java.lang.ClassNotFoundException
public long longValue()
long
value of a LongKey
.
long
value of a LongKey
.public java.lang.String toString()
String
representation of a LongKey
.
toString
in class KeyObject
String
representation of a LongKey
.public int hashCode()
hashCode
in class java.lang.Object
Object
,
HashIndex
|
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