org.apache.cayenne.dba.frontbase
Class FrontBasePkGenerator

java.lang.Object
  extended by org.apache.cayenne.dba.JdbcPkGenerator
      extended by org.apache.cayenne.dba.frontbase.FrontBasePkGenerator
All Implemented Interfaces:
PkGenerator

public class FrontBasePkGenerator
extends JdbcPkGenerator

Since:
1.2
Author:
Andrus Adamchik

Field Summary
 
Fields inherited from class org.apache.cayenne.dba.JdbcPkGenerator
DEFAULT_PK_CACHE_SIZE, NEXT_ID, objDesc, pkCache, pkCacheSize, resultDesc
 
Constructor Summary
FrontBasePkGenerator()
           
 
Method Summary
 void createAutoPk(DataNode node, java.util.List dbEntities)
          Generates necessary database objects to provide automatic primary key support.
 java.util.List createAutoPkStatements(java.util.List dbEntities)
          Returns a list of SQL strings needed to generates database objects to provide automatic primary support for the list of entities.
 void dropAutoPk(DataNode node, java.util.List dbEntities)
          Drops table named "AUTO_PK_SUPPORT" if it exists in the database.
protected  java.lang.String dropAutoPkString()
           
 int getPkCacheSize()
          Retruns zero as PK caching is not supported by FrontBaseAdapter.
protected  java.lang.String pkCreateString(java.lang.String entName)
           
protected  java.lang.String pkDeleteString(java.util.List dbEntities)
           
protected  int pkFromDatabase(DataNode node, DbEntity entity)
          Performs primary key generation ignoring cache.
protected  java.lang.String pkSelectString(java.lang.String entName)
           
protected  java.lang.String pkTableCreateString()
           
protected  java.lang.String pkUpdateString(java.lang.String entName)
           
 
Methods inherited from class org.apache.cayenne.dba.JdbcPkGenerator
autoPkTableExists, binaryPK, dropAutoPkStatements, generatePkForDbEntity, generatePkForDbEntityString, reset, runUpdate, setPkCacheSize
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

FrontBasePkGenerator

public FrontBasePkGenerator()
Method Detail

getPkCacheSize

public int getPkCacheSize()
Retruns zero as PK caching is not supported by FrontBaseAdapter.

Overrides:
getPkCacheSize in class JdbcPkGenerator

createAutoPk

public void createAutoPk(DataNode node,
                         java.util.List dbEntities)
                  throws java.lang.Exception
Description copied from interface: PkGenerator
Generates necessary database objects to provide automatic primary key support.

Specified by:
createAutoPk in interface PkGenerator
Overrides:
createAutoPk in class JdbcPkGenerator
Parameters:
node - node that provides access to a DataSource.
dbEntities - a list of entities that require primary key autogeneration support
Throws:
java.lang.Exception

createAutoPkStatements

public java.util.List createAutoPkStatements(java.util.List dbEntities)
Description copied from interface: PkGenerator
Returns a list of SQL strings needed to generates database objects to provide automatic primary support for the list of entities. No actual database operations are performed.

Specified by:
createAutoPkStatements in interface PkGenerator
Overrides:
createAutoPkStatements in class JdbcPkGenerator

dropAutoPk

public void dropAutoPk(DataNode node,
                       java.util.List dbEntities)
                throws java.lang.Exception
Description copied from class: JdbcPkGenerator
Drops table named "AUTO_PK_SUPPORT" if it exists in the database.

Specified by:
dropAutoPk in interface PkGenerator
Overrides:
dropAutoPk in class JdbcPkGenerator
Parameters:
node - node that provides access to a DataSource.
dbEntities - a list of entities whose primary key autogeneration support should be dropped.
Throws:
java.lang.Exception

pkTableCreateString

protected java.lang.String pkTableCreateString()
Overrides:
pkTableCreateString in class JdbcPkGenerator

pkDeleteString

protected java.lang.String pkDeleteString(java.util.List dbEntities)
Overrides:
pkDeleteString in class JdbcPkGenerator

pkCreateString

protected java.lang.String pkCreateString(java.lang.String entName)
Overrides:
pkCreateString in class JdbcPkGenerator

pkSelectString

protected java.lang.String pkSelectString(java.lang.String entName)
Overrides:
pkSelectString in class JdbcPkGenerator

pkUpdateString

protected java.lang.String pkUpdateString(java.lang.String entName)
Overrides:
pkUpdateString in class JdbcPkGenerator

dropAutoPkString

protected java.lang.String dropAutoPkString()
Overrides:
dropAutoPkString in class JdbcPkGenerator

pkFromDatabase

protected int pkFromDatabase(DataNode node,
                             DbEntity entity)
                      throws java.lang.Exception
Description copied from class: JdbcPkGenerator
Performs primary key generation ignoring cache. Generates a range of primary keys as specified by "pkCacheSize" bean property.

This method is called internally from "generatePkForDbEntity" and then generated range of key values is saved in cache for performance. Subclasses that implement different primary key generation solutions should override this method, not "generatePkForDbEntity".

Overrides:
pkFromDatabase in class JdbcPkGenerator
Throws:
java.lang.Exception


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