Java Doc for CachedDataRow.java in  » Database-DBMS » hsql » org » hsqldb » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » hsql » org.hsqldb 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   org.hsqldb.Row
      org.hsqldb.CachedRow
         org.hsqldb.CachedDataRow

CachedDataRow
class CachedDataRow extends CachedRow (Code)
Implementation of rows for tables with memory resident indexes and disk-based data, such as TEXT tables.
version:
   1.7.2



Constructor Summary
 CachedDataRow(Table t, Object[] o)
     Constructor for new rows.
 CachedDataRow(Table t, RowInputInterface in)
     Constructor when read from the disk into the Cache.

Method Summary
public  booleanequals(Object obj)
     With the current implementation of TEXT table updates and inserts, the lifetime scope of this method extends until redefinition of table data source or shutdown.
Parameters:
  obj - the reference object with which to compare.
public  intgetRealSize(RowOutputInterface out)
    
 RowgetUpdatedRow()
    
public  booleanhasChanged()
    
 voidsetNewNodes()
     Used when data is read from the disk into the Cache the first time.
public  voidsetPos(int pos)
     Sets the file position for the row and registers the row with the table.
 voidsetPrimaryNode(Node primary)
     Used when data is re-read from the disk into the Cache.
public  voidwrite(RowOutputInterface out)
     Writes the data to disk.


Constructor Detail
CachedDataRow
CachedDataRow(Table t, Object[] o) throws HsqlException(Code)
Constructor for new rows.



CachedDataRow
CachedDataRow(Table t, RowInputInterface in) throws IOException, HsqlException(Code)
Constructor when read from the disk into the Cache. The link with the Nodes is made separetly.




Method Detail
equals
public boolean equals(Object obj)(Code)
With the current implementation of TEXT table updates and inserts, the lifetime scope of this method extends until redefinition of table data source or shutdown.
Parameters:
  obj - the reference object with which to compare. true if this object is the same as the obj argument;false otherwise.



getRealSize
public int getRealSize(RowOutputInterface out)(Code)
returned size does not include the row size written at the beginning



getUpdatedRow
Row getUpdatedRow() throws HsqlException(Code)
As the indexes are in-memory, this passes the existing primary node for the construction of the new Row



hasChanged
public boolean hasChanged()(Code)



setNewNodes
void setNewNodes()(Code)
Used when data is read from the disk into the Cache the first time. New Nodes are created which are then indexed.



setPos
public void setPos(int pos)(Code)
Sets the file position for the row and registers the row with the table.
Parameters:
  pos - position in data file



setPrimaryNode
void setPrimaryNode(Node primary)(Code)
Used when data is re-read from the disk into the Cache. The Row is already indexed so it is linked with the Node in the primary index. the Nodes is made separetly.



write
public void write(RowOutputInterface out)(Code)
Writes the data to disk. Unlike CachedRow, hasChanged is never set to true when changes are made to the Nodes. (Nodes are in-memory). The only time this is used is when a new Row is added to the Caches.



Fields inherited from org.hsqldb.CachedRow
final static int NO_POS(Code)(Java Doc)
protected boolean hasDataChanged(Code)(Java Doc)
boolean hasNodesChanged(Code)(Java Doc)
int storageSize(Code)(Java Doc)
protected Table tTable(Code)(Java Doc)

Methods inherited from org.hsqldb.CachedRow
public void delete() throws HsqlException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
public int getRealSize(RowOutputInterface out)(Code)(Java Doc)
public int getStorageSize()(Code)(Java Doc)
public Table getTable()(Code)(Java Doc)
synchronized Row getUpdatedRow() throws HsqlException(Code)(Java Doc)
public boolean hasChanged()(Code)(Java Doc)
public int hashCode()(Code)(Java Doc)
public synchronized boolean isKeepInMemory()(Code)(Java Doc)
public static CachedRow newCachedRow(Table t, Object[] o) throws HsqlException(Code)(Java Doc)
void setChanged()(Code)(Java Doc)
void setNewNodes()(Code)(Java Doc)
public void setPos(int pos)(Code)(Java Doc)
public void setStorageSize(int size)(Code)(Java Doc)
public void write(RowOutputInterface out)(Code)(Java Doc)
public void write(RowOutputInterface out, IntLookup lookup)(Code)(Java Doc)

Fields inherited from org.hsqldb.Row
int iPos(Code)(Java Doc)
protected Node nPrimaryNode(Code)(Java Doc)
protected Object[] oData(Code)(Java Doc)
int tableId(Code)(Java Doc)

Methods inherited from org.hsqldb.Row
void clearNodeLinks()(Code)(Java Doc)
void delete() throws HsqlException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
public Object[] getData()(Code)(Java Doc)
public long getId()(Code)(Java Doc)
public static long getId(Table table, int pos)(Code)(Java Doc)
Node getNextNode(Node n)(Code)(Java Doc)
Node getNode(int index)(Code)(Java Doc)
public int getPos()(Code)(Java Doc)
public int getRealSize(RowOutputInterface out)(Code)(Java Doc)
public int getStorageSize()(Code)(Java Doc)
Row getUpdatedRow() throws HsqlException(Code)(Java Doc)
public boolean hasChanged()(Code)(Java Doc)
public int hashCode()(Code)(Java Doc)
boolean isCascadeDeleted()(Code)(Java Doc)
public boolean isInMemory()(Code)(Java Doc)
public boolean isKeepInMemory()(Code)(Java Doc)
public void keepInMemory(boolean keep)(Code)(Java Doc)
public void setInMemory(boolean in)(Code)(Java Doc)
public void setPos(int pos)(Code)(Java Doc)
public void setStorageSize(int size)(Code)(Java Doc)
public void write(RowOutputInterface out)(Code)(Java Doc)
public void write(RowOutputInterface out, IntLookup lookup)(Code)(Java Doc)

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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