|
JXTA | |||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Objectnet.jxta.impl.xindice.core.filer.MemFiler
public final class MemFiler
MemFiler is an In-Memory Filer implementation for Xindice. MemFiler can be used for temporary collections and caching. It's basically a layering on top of HashMap.
Constructor Summary | |
---|---|
MemFiler()
|
|
MemFiler(Map<Key,Record> hashTable)
|
|
MemFiler(Map<Key,Record> hashTable,
boolean readOnly)
|
Method Summary | |
---|---|
boolean |
close()
close closes the DBObject |
boolean |
create()
create creates a new DBObject and any associated resources for the new DBObject, such as disk files, etc. |
boolean |
deleteRecord(Key key)
deleteRecord removes a Record from the Filer based on the specified Key. |
boolean |
drop()
drop instructs the DBObjectimplementation to remove itself from existence. |
boolean |
exists()
exists returns whether or not a physical representation of this DBObject actually exists. |
void |
flush()
flush forcefully flushes any unwritten buffers to disk. |
String |
getName()
getName retrieves the contextually important name of the object |
long |
getRecordCount()
getRecordCount returns the number of Records in the Filer. |
RecordSet |
getRecordSet()
getRecordSet returns a RecordSet object for the current Filer. |
boolean |
isOpened()
isOpened returns whether or not the DBObject is opened for business. |
boolean |
open()
open opens the DBObject |
Record |
readRecord(Key key)
readRecord returns a Record from the Filer based on the specified Key. |
Record |
readRecord(long pos)
readRecord returns a Record from the Filer at the specified position. |
void |
setLocation(File root,
String location)
|
long |
writeRecord(Key key,
Value value)
writeRecord writes a Value to the Filer based on the specified Key. |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
---|
public MemFiler()
public MemFiler(Map<Key,Record> hashTable, boolean readOnly)
public MemFiler(Map<Key,Record> hashTable)
Method Detail |
---|
public void setLocation(File root, String location)
public String getName()
Named
getName
in interface Named
public boolean create()
DBObject
create
in interface DBObject
public boolean open()
DBObject
open
in interface DBObject
public boolean isOpened()
DBObject
isOpened
in interface DBObject
public boolean exists()
DBObject
exists
in interface DBObject
public boolean drop()
DBObject
drop
in interface DBObject
public boolean close()
DBObject
close
in interface DBObject
public void flush()
Filer
flush
in interface Filer
public Record readRecord(Key key) throws DBException
Filer
readRecord
in interface Filer
key
- The Record's Key
DBException
- if a db exception occurspublic Record readRecord(long pos) throws DBException
Filer
readRecord
in interface Filer
pos
- The Record's position
DBException
- if a db exception occurspublic long writeRecord(Key key, Value value) throws DBException
Filer
writeRecord
in interface Filer
key
- The Record's Keyvalue
- The Record's Value
DBException
- if a db exception occurspublic boolean deleteRecord(Key key) throws DBException
Filer
deleteRecord
in interface Filer
key
- The Record's Key
DBException
- if a db exception occurspublic long getRecordCount() throws DBException
Filer
getRecordCount
in interface Filer
DBException
- if a db exception occurspublic RecordSet getRecordSet() throws DBException
Filer
getRecordSet
in interface Filer
DBException
- if a db exception occurs
|
JXSE | |||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |