org.eclipse.datatools.modelbase.sql.query.util
Class SQLQuerySourceWriterProvider

java.lang.Object
  extended byorg.eclipse.datatools.modelbase.sql.query.util.SQLQuerySourceWriterProvider

public class SQLQuerySourceWriterProvider
extends java.lang.Object

Singleton SQLQuerySourceWriterProvider holds a registry of SQLQuerySourceWriter extensions and creates instances of SQLQuerySourceWriters, that are registered for a specific SQLQueryObject Package. As plugin in an eclipse runtime environment, the registration of SQLQuerySourceWriter for a package of SQLQueryObject extensions is done at start time of the plugin containing the SQL Query model extension. The registry is implemented following the lazy loading startegy and the plugin extending the SQL Query model plugin is only loaded the first time a SQLQueryObject is instanciated in the extending plugin.

Author:
ckadner

Method Summary
static SQLQuerySourceWriterProvider getInstance()
           
 void registerSourceWriter(java.lang.Class sourceWriterClass, java.lang.String sqlModelObjectsPackageName)
          Method to register a subclass of the SQLQuerySourceWriter for a specific package of SQLQueryObjects, that the given sourceWriterClass generates the SQL source for.
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Method Detail

getInstance

public static SQLQuerySourceWriterProvider getInstance()
Returns:
the singleton SQLQuerySourceWriterProvider instance

registerSourceWriter

public void registerSourceWriter(java.lang.Class sourceWriterClass,
                                 java.lang.String sqlModelObjectsPackageName)
Method to register a subclass of the SQLQuerySourceWriter for a specific package of SQLQueryObjects, that the given sourceWriterClass generates the SQL source for. Note: there can only be one SQLQuerySourceWriter for one package of SQLQueryObjects, however one SQLQuerySourceWriter can generate the SQL source for multiple packages of SQLQueryObjects. In general an extension of a SQLQuerySourceWriter goes along with an extension to the SQLQueryObject model. Developer note: if the name and packaging of the SQLQuerySourceWriter follows the naming convention described in the class documentaion section, the SQLQuerySourceWriter will be registered automatically via @link java.lang.reflect.*

Parameters:
sourceWriterClass - the SQLQuerySourceWriter class that generates the SQL source for the SQLQueryObject s in the given sqlModelObjectsPackage
sqlModelObjectsPackageName - fully qualified package name of SQLQueryObjects


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