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org.objectweb.cjdbc.controller.cache.result.schema.CacheDatabaseColumn Class Reference

List of all members.

Public Member Functions

 CacheDatabaseColumn (String name)
String getName ()
boolean equals (Object other)
synchronized void addCacheEntry (CacheEntry ce)
synchronized void markDirtyAllNonUnique ()
synchronized void invalidateAll ()
synchronized void invalidateAllNonUnique ()
synchronized void invalidateAllUniqueWithValuesAndAllNonUnique (String val, ArrayList columns, ArrayList values)
synchronized void invalidateAllNonUniqueAndMarkDirtyUnique ()
String getInformation ()

Detailed Description

A CacheDatabaseColumn represents a column of a database table. It is composed of a DatabaseColumn object and an ArrayList of cache entries.

Author:
Emmanuel Cecchet

Julie Marguerite

Sara Bouchenak

Version:
1.0

Definition at line 46 of file CacheDatabaseColumn.java.

Constructor & Destructor Documentation

org.objectweb.cjdbc.controller.cache.result.schema.CacheDatabaseColumn.CacheDatabaseColumn (  String  name  ) 
 

Creates a new CacheDatabaseColumn instance.

Parameters:
name name of the column

Definition at line 56 of file CacheDatabaseColumn.java.

00057   {
00058     this.name = name;
00059     cacheEntries = new ArrayList();
00060   }

Member Function Documentation

synchronized void org.objectweb.cjdbc.controller.cache.result.schema.CacheDatabaseColumn.addCacheEntry (  CacheEntry  ce  ) 
 

Adds a CacheEntry object whose consistency depends on this column.

Parameters:
ce a ResultCacheEntry value

Definition at line 93 of file CacheDatabaseColumn.java.

Referenced by org.objectweb.cjdbc.controller.cache.result.ResultCacheColumnUnique.processAddToCache(), and org.objectweb.cjdbc.controller.cache.result.ResultCacheColumn.processAddToCache().

00094   {
00095     cacheEntries.add(ce);
00096   }

boolean org.objectweb.cjdbc.controller.cache.result.schema.CacheDatabaseColumn.equals (  Object  other  ) 
 

Two CacheDatabaseColumn are equals if they have the same DatabaseColumn.

Parameters:
other the object to compare with
Returns:
true if the objects are the same

Definition at line 79 of file CacheDatabaseColumn.java.

References org.objectweb.cjdbc.controller.cache.result.schema.CacheDatabaseColumn.getName().

Referenced by org.objectweb.cjdbc.controller.cache.result.schema.CacheDatabaseTable.mergeColumns().

00080   {
00081     if (!(other instanceof CacheDatabaseColumn))
00082       return false;
00083 
00084     return name.equals(((CacheDatabaseColumn) other).getName());
00085   }

String org.objectweb.cjdbc.controller.cache.result.schema.CacheDatabaseColumn.getInformation (   ) 
 

Returns the column name.

Returns:
a String value

Definition at line 254 of file CacheDatabaseColumn.java.

Referenced by org.objectweb.cjdbc.controller.cache.result.schema.CacheDatabaseTable.getInformation().

00255   {
00256     return name;
00257   }

String org.objectweb.cjdbc.controller.cache.result.schema.CacheDatabaseColumn.getName (   ) 
 

Gets the column name.

Returns:
the column name

Definition at line 67 of file CacheDatabaseColumn.java.

Referenced by org.objectweb.cjdbc.controller.cache.result.schema.CacheDatabaseColumn.equals(), org.objectweb.cjdbc.controller.cache.result.schema.CacheDatabaseTable.getColumn(), org.objectweb.cjdbc.controller.cache.result.schema.CacheDatabaseColumn.invalidateAllUniqueWithValuesAndAllNonUnique(), and org.objectweb.cjdbc.controller.cache.result.schema.CacheDatabaseTable.mergeColumns().

00068   {
00069     return name;
00070   }

synchronized void org.objectweb.cjdbc.controller.cache.result.schema.CacheDatabaseColumn.invalidateAll (   ) 
 

Invalidates all cache entries depending on this column.

Definition at line 118 of file CacheDatabaseColumn.java.

References org.objectweb.cjdbc.controller.cache.result.entries.CacheEntry.invalidate().

Referenced by org.objectweb.cjdbc.controller.cache.result.ResultCacheColumnUnique.processWriteNotify(), and org.objectweb.cjdbc.controller.cache.result.ResultCacheColumn.processWriteNotify().

00119   {
00120     for (Iterator i = cacheEntries.iterator(); i.hasNext();)
00121     {
00122       CacheEntry entry = (CacheEntry) i.next();
00123        entry.invalidate();
00124     }
00125     cacheEntries.clear();
00126   }

synchronized void org.objectweb.cjdbc.controller.cache.result.schema.CacheDatabaseColumn.invalidateAllNonUnique (   ) 
 

Invalidates all cache entries depending on this column that are non UNIQUE.

Definition at line 131 of file CacheDatabaseColumn.java.

References org.objectweb.cjdbc.common.sql.AbstractRequest.getCacheAbility(), org.objectweb.cjdbc.controller.cache.result.entries.CacheEntry.getRequest(), and org.objectweb.cjdbc.controller.cache.result.entries.CacheEntry.invalidate().

Referenced by org.objectweb.cjdbc.controller.cache.result.ResultCacheColumnUnique.processWriteNotify().

00132   {
00133     // Do not try to optimize by moving cacheEntries.size()
00134     // out of the for statement
00135     for (int i = 0; i < cacheEntries.size();)
00136     {
00137       CacheEntry ce = (CacheEntry) cacheEntries.get(i);
00138       if (ce.getRequest().getCacheAbility() != RequestType.UNIQUE_CACHEABLE)
00139       {
00140         ce.invalidate();
00141         cacheEntries.remove(i);
00142       }
00143       else
00144       {
00145         i++;
00146       }
00147     }
00148   }

synchronized void org.objectweb.cjdbc.controller.cache.result.schema.CacheDatabaseColumn.invalidateAllNonUniqueAndMarkDirtyUnique (   ) 
 

Invalidates all cache entries depending on this column that are non UNIQUE and mark dirty UNIQUE queries.

Definition at line 231 of file CacheDatabaseColumn.java.

References org.objectweb.cjdbc.common.sql.AbstractRequest.getCacheAbility(), org.objectweb.cjdbc.controller.cache.result.entries.CacheEntry.getRequest(), org.objectweb.cjdbc.controller.cache.result.entries.CacheEntry.invalidate(), org.objectweb.cjdbc.controller.cache.result.entries.CacheEntry.isValid(), and org.objectweb.cjdbc.controller.cache.result.entries.CacheEntry.markDirty().

00232   {
00233     // Do not try to optimize by moving cacheEntries.size()
00234     // out of the for statement
00235     for (int i = 0; i < cacheEntries.size(); i++)
00236     {
00237       CacheEntry ce = (CacheEntry) cacheEntries.get(i);
00238       if ((ce.getRequest().getCacheAbility() != RequestType.UNIQUE_CACHEABLE)
00239         && ce.isValid())
00240         ce.markDirty();
00241       else
00242       {
00243         ce.invalidate();
00244         cacheEntries.remove(i);
00245       }
00246     }
00247   }

synchronized void org.objectweb.cjdbc.controller.cache.result.schema.CacheDatabaseColumn.invalidateAllUniqueWithValuesAndAllNonUnique (  String  val,
ArrayList  columns,
ArrayList  values
) 
 

Invalidates all cache entries depending on this column that are either non- unique or unique and associated with given values.

Parameters:
val a String representing the value of the current column.
columns an ArrayList of CacheDatabaseColumn objects
values an ArrayList of String objects representing values.

Definition at line 160 of file CacheDatabaseColumn.java.

References org.objectweb.cjdbc.common.sql.AbstractRequest.getCacheAbility(), org.objectweb.cjdbc.controller.cache.result.schema.CacheDatabaseColumn.getName(), org.objectweb.cjdbc.controller.cache.result.entries.CacheEntry.getRequest(), org.objectweb.cjdbc.common.sql.SelectRequest.getWhereValues(), and org.objectweb.cjdbc.controller.cache.result.entries.CacheEntry.invalidate().

00164   {
00165     // Do not try to optimize by moving cacheEntries.size()
00166     // out of the for statement
00167     for (int i = 0; i < cacheEntries.size();)
00168     {
00169       CacheEntry ce = (CacheEntry) cacheEntries.get(i);
00170       if (ce.getRequest().getCacheAbility() == RequestType.UNIQUE_CACHEABLE)
00171       {
00172         Hashtable queryValues;
00173         String value, v;
00174         SelectRequest query;
00175         int size, j;
00176 
00177         query = ce.getRequest();
00178         queryValues = query.getWhereValues();
00179         // queryValues != null in a UNIQUE_CACHEABLE request
00180         value = (String) queryValues.get(this.name);
00181         if (value.compareToIgnoreCase(val) == 0)
00182         {
00183           // The value associated with this column in the WHERE clause
00184           // of the UNIQUE SELECT query equals val:
00185           // Check if the values associated with the other columns are equal.
00186           size = values.size();
00187           j = 0;
00188           for (Iterator it = columns.iterator();
00189             it.hasNext() && (j < size);
00190             j++)
00191           {
00192             CacheDatabaseColumn cdc = (CacheDatabaseColumn) it.next();
00193             if (!this.equals(cdc))
00194             {
00195               v = (String) values.get(j);
00196               value = (String) queryValues.get(cdc.getName());
00197               if (value.compareToIgnoreCase(v) != 0)
00198               {
00199                 // UNIQUE_CACHEABLE request with a different value
00200                 // Do not invalidate it
00201                 return;
00202               }
00203             }
00204           }
00205           // UNIQUE_CACHEABLE request with same values
00206           // Invalidate it
00207           ce.invalidate();
00208           cacheEntries.remove(i);
00209         }
00210         else
00211         {
00212           // UNIQUE_CACHEABLE request with a different value
00213           // Do not invalidate it
00214           i++;
00215         }
00216       }
00217       else
00218       {
00219         // NON UNIQUE_CACHEABLE request
00220         // Invalidate it
00221         ce.invalidate();
00222         cacheEntries.remove(i);
00223       }
00224     }
00225   }

synchronized void org.objectweb.cjdbc.controller.cache.result.schema.CacheDatabaseColumn.markDirtyAllNonUnique (   ) 
 

Marks dirty all valid cache entries depending on this colum that are non unique.

Definition at line 102 of file CacheDatabaseColumn.java.

References org.objectweb.cjdbc.common.sql.AbstractRequest.getCacheAbility(), org.objectweb.cjdbc.controller.cache.result.entries.CacheEntry.getRequest(), org.objectweb.cjdbc.controller.cache.result.entries.CacheEntry.isValid(), and org.objectweb.cjdbc.controller.cache.result.entries.CacheEntry.markDirty().

00103   {
00104     // Do not try to optimize by moving cacheEntries.size()
00105     // out of the for statement
00106     for (int i = 0; i < cacheEntries.size(); i++)
00107     {
00108       CacheEntry ce = (CacheEntry) cacheEntries.get(i);
00109       if ((ce.getRequest().getCacheAbility() != RequestType.UNIQUE_CACHEABLE)
00110         && ce.isValid())
00111         ce.markDirty();
00112     }
00113   }

The documentation for this class was generated from the following file:
Generated on Mon Apr 11 22:03:37 2005 for C-JDBC by  doxygen 1.3.9.1