Java Doc for AbstractResultCacheEntry.java in » Database-JDBC-Connection-Pool » sequoia-2.10.9 » org » continuent » sequoia » controller » cache » result » entries » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database JDBC Connection Pool » sequoia 2.10.9 » org.continuent.sequoia.controller.cache.result.entries

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

org.continuent.sequoia.controller.cache.result.entries .AbstractResultCacheEntry

All known Subclasses:   org.continuent.sequoia.controller.cache.result.entries .ResultCacheEntryNoCache,  org.continuent.sequoia.controller.cache.result.entries .ResultCacheEntryRelaxed,  org.continuent.sequoia.controller.cache.result.entries .ResultCacheEntryEager,
AbstractResultCacheEntry
abstract public class AbstractResultCacheEntry (Code)
A CacheEntry represents a SQL select request with its reponse. The cache entry can have 3 states:

CACHE_VALID when it is valid

CACHE_DIRTY when the result has been marked dirty (may be invalid)

CACHE_INVALID when there is no result (request has to be re-issued to the database)

author:
   Emmanuel Cecchet
version:
   1.0

Field Summary
final public static int CACHE_DIRTY

final public static int CACHE_INVALID
     This entry is no more valid and is not consistent with real data.
final public static int CACHE_VALID

final public static int NO_DEADLINE

protected SelectRequest request

protected ControllerResultSet result

protected int state


Constructor Summary
public AbstractResultCacheEntry(SelectRequest request, ControllerResultSet result)
     Creates a new CacheEntry instance.

Method Summary
public AbstractResultCacheEntry getNext()
     Gets the value of next AbstractResultCacheEntry in LRU.
public AbstractResultCacheEntry getPrev()
     Gets the value of previous AbstractResultCacheEntry in LRU.
public SelectRequest getRequest()
     Returns the SELECT request of this cache entry.
public ControllerResultSet getResult()

public int getSizeOfResult()

public String getState()

abstract public String getType()

abstract public void invalidate()
     Invalidates this cache entry (removes the ResultSet and turn state to AbstractResultCacheEntry.CACHE_INVALID ).
public boolean isDirty()
     Returns true if cache entry state is marked dirty (state is AbstractResultCacheEntry.CACHE_DIRTY ).
public boolean isValid()
     Return true if cache entry state is valid (state is AbstractResultCacheEntry.CACHE_VALID ).
public void markDirty()
     Marks this entry dirty (state becomes AbstractResultCacheEntry.CACHE_DIRTY ).
public void setNext(AbstractResultCacheEntry next)
     Sets the value of next AbstractResultCacheEntry in LRU.
public void setPrev(AbstractResultCacheEntry prev)
     Sets the value of previous AbstractResultCacheEntry in LRU.
public void setResult(ControllerResultSet result)
     Set a new ControllerResultSet of the cached select request (cache update).
public void setValid()
     Marks this entry valid (state becomes AbstractResultCacheEntry.CACHE_VALID ).
abstract public String[] toStringTable()


Field Detail
CACHE_DIRTY
final public static int CACHE_DIRTY(Code)
This entry is dirty

CACHE_INVALID
final public static int CACHE_INVALID(Code)
This entry is no more valid and is not consistent with real data.

CACHE_VALID
final public static int CACHE_VALID(Code)
State this entry is valid

NO_DEADLINE
final public static int NO_DEADLINE(Code)
This entry has no deadline

request
protected SelectRequest request(Code)

result
protected ControllerResultSet result(Code)

state
protected int state(Code)

Constructor Detail
AbstractResultCacheEntry
public AbstractResultCacheEntry(SelectRequest request, ControllerResultSet result)(Code)
Creates a new CacheEntry instance.
Parameters:
  request - a SelectRequest value
Parameters:
  result - a ControllerResultSet value

Method Detail
getNext
public AbstractResultCacheEntry getNext()(Code)
Gets the value of next AbstractResultCacheEntry in LRU. value of next.

getPrev
public AbstractResultCacheEntry getPrev()(Code)
Gets the value of previous AbstractResultCacheEntry in LRU. value of previous.

getRequest
public SelectRequest getRequest()(Code)
Returns the SELECT request of this cache entry. a SelectRequest value

getResult
public ControllerResultSet getResult()(Code)
Returns the ControllerResultSet of the cached select request a ControllerResultSet value

getSizeOfResult
public int getSizeOfResult()(Code)
Size of the result in bytes an integer

getState
public String getState()(Code)
Get the state of this entry as a string Valid or Dirty or Invalid

getType
abstract public String getType()(Code)
Get the type of this entry as a string NoCache or Eager or Relaxed

invalidate
abstract public void invalidate()(Code)
Invalidates this cache entry (removes the ResultSet and turn state to AbstractResultCacheEntry.CACHE_INVALID ).

isDirty
public boolean isDirty()(Code)
Returns true if cache entry state is marked dirty (state is AbstractResultCacheEntry.CACHE_DIRTY ). a boolean value

isValid
public boolean isValid()(Code)
Return true if cache entry state is valid (state is AbstractResultCacheEntry.CACHE_VALID ). a boolean value

markDirty
public void markDirty()(Code)
Marks this entry dirty (state becomes AbstractResultCacheEntry.CACHE_DIRTY ).
The ResultSet if not affected by this method.

setNext
public void setNext(AbstractResultCacheEntry next)(Code)
Sets the value of next AbstractResultCacheEntry in LRU.
Parameters:
  next - value to assign to next.

setPrev
public void setPrev(AbstractResultCacheEntry prev)(Code)
Sets the value of previous AbstractResultCacheEntry in LRU.
Parameters:
  prev - value to assign to prev.

setResult
public void setResult(ControllerResultSet result)(Code)
Set a new ControllerResultSet of the cached select request (cache update).
The cache state is automatically set to valid ( AbstractResultCacheEntry.CACHE_VALID ).
Parameters:
  result - a ControllerResultSet value

setValid
public void setValid()(Code)
Marks this entry valid (state becomes AbstractResultCacheEntry.CACHE_VALID ).

toStringTable
abstract public String[] toStringTable()(Code)
Get data about this entry an array [request,type,status(valid,notvalid,dirty),deadLine]

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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