Examples of org.hibernate.boot.registry.selector.spi.StrategySelector

Package org.hibernate.boot.registry.selector.spi

Examples of org.hibernate.boot.registry.selector.spi.StrategySelector

org.hibernate.boot.registry.selector.spi.StrategySelector
Service which acts as a registry for named strategy implementations.
Strategies are more open ended than services, though a strategy managed here might very well also be a service. The strategy is any interface that has multiple, (possibly short) named implementations.
StrategySelector manages resolution of particular implementation by (possibly short) name via the {@link #selectStrategyImplementor} method, which is the main contract here. As indicated in the docs of thatmethod the given name might be either a short registered name or the implementation FQN. As an example, consider resolving the {@link org.hibernate.engine.transaction.spi.TransactionFactory} implementation to use. To use theJDBC-based TransactionFactory the passed name might be either {@code "jdbc"} or{@code "org.hibernate.engine.transaction.internal.jdbc.JdbcTransactionFactory"} (which is the FQN).
Strategy implementations can be managed by {@link #registerStrategyImplementor} and{@link #unRegisterStrategyImplementor}. Originally designed to help the OSGi use case, though no longer used there.
The service also exposes a general typing API via {@link #resolveStrategy} and {@link #resolveDefaultableStrategy}which accept implementation references rather than implementation names, allowing for a multitude of interpretations of said "implementation reference". See the docs for {@link #resolveDefaultableStrategy} for details. @author Steve Ebersole

    }
  }


  private static Dialect constructDialect(String dialectName, ServiceRegistry serviceRegistry) {
    final Dialect dialect;
    final StrategySelector strategySelector = serviceRegistry.getService( StrategySelector.class );
    try {
      dialect = strategySelector.resolveStrategy( Dialect.class, dialectName );
      if ( dialect == null ) {
        throw new HibernateException( "Unable to construct requested dialect [" + dialectName + "]" );
      }
      return dialect;
    }

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    if ( strategy == MultiTenancyStrategy.DATABASE || strategy == MultiTenancyStrategy.SCHEMA ) {
      // nothing to do, but given the separate hierarchies have to handle this here.
      return null;
    }


    final StrategySelector strategySelector = registry.getService( StrategySelector.class );


    ConnectionProvider connectionProvider = null;
    final String providerName = getConfiguredConnectionProviderName( configurationValues );
    if ( providerName != null ) {
      connectionProvider = instantiateExplicitConnectionProvider( providerName, strategySelector );

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    if ( "true".equals( configurationValues.get( Environment.FLUSH_BEFORE_COMPLETION ) ) ) {
      serviceRegistryBuilder.applySetting( Environment.FLUSH_BEFORE_COMPLETION, "false" );
      LOG.definingFlushBeforeCompletionIgnoredInHem( Environment.FLUSH_BEFORE_COMPLETION );
    }


    final StrategySelector strategySelector = serviceRegistryBuilder.getBootstrapServiceRegistry().getService( StrategySelector.class );


    for ( Object oEntry : configurationValues.entrySet() ) {
      Map.Entry entry = (Map.Entry) oEntry;
      if ( entry.getKey() instanceof String ) {
        final String keyString = (String) entry.getKey();


        if ( AvailableSettings.INTERCEPTOR.equals( keyString ) ) {
          sessionFactoryInterceptor = strategySelector.resolveStrategy( Interceptor.class, entry.getValue() );
        }
        else if ( AvailableSettings.SESSION_INTERCEPTOR.equals( keyString ) ) {
          settings.setSessionInterceptorClass(
              loadSessionInterceptorClass( entry.getValue(), strategySelector )
          );
        }
        else if ( AvailableSettings.NAMING_STRATEGY.equals( keyString ) ) {
          namingStrategy = strategySelector.resolveStrategy( NamingStrategy.class, entry.getValue() );
        }
        else if ( AvailableSettings.SESSION_FACTORY_OBSERVER.equals( keyString ) ) {
          suppliedSessionFactoryObserver = strategySelector.resolveStrategy( SessionFactoryObserver.class, entry.getValue() );
        }
        else if ( AvailableSettings.DISCARD_PC_ON_CLOSE.equals( keyString ) ) {
          settings.setReleaseResourcesOnCloseEnabled( "true".equals( entry.getValue() ) );
        }
        else if ( keyString.startsWith( AvailableSettings.CLASS_CACHE_PREFIX ) ) {

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    if ( "true".equals( configurationValues.get( Environment.FLUSH_BEFORE_COMPLETION ) ) ) {
      serviceRegistryBuilder.applySetting( Environment.FLUSH_BEFORE_COMPLETION, "false" );
      LOG.definingFlushBeforeCompletionIgnoredInHem( Environment.FLUSH_BEFORE_COMPLETION );
    }


    final StrategySelector strategySelector = serviceRegistryBuilder.getBootstrapServiceRegistry().getService( StrategySelector.class );


    for ( Object oEntry : configurationValues.entrySet() ) {
      Map.Entry entry = (Map.Entry) oEntry;
      if ( entry.getKey() instanceof String ) {
        final String keyString = (String) entry.getKey();


        if ( AvailableSettings.INTERCEPTOR.equals( keyString ) ) {
          sessionFactoryInterceptor = strategySelector.resolveStrategy( Interceptor.class, entry.getValue() );
        }
        else if ( AvailableSettings.SESSION_INTERCEPTOR.equals( keyString ) ) {
          settings.setSessionInterceptorClass(
              loadSessionInterceptorClass( entry.getValue(), strategySelector )
          );
        }
        else if ( AvailableSettings.NAMING_STRATEGY.equals( keyString ) ) {
          namingStrategy = strategySelector.resolveStrategy( NamingStrategy.class, entry.getValue() );
        }
        else if ( AvailableSettings.SESSION_FACTORY_OBSERVER.equals( keyString ) ) {
          suppliedSessionFactoryObserver = strategySelector.resolveStrategy( SessionFactoryObserver.class, entry.getValue() );
        }
        else if ( AvailableSettings.DISCARD_PC_ON_CLOSE.equals( keyString ) ) {
          settings.setReleaseResourcesOnCloseEnabled( "true".equals( entry.getValue() ) );
        }
        else if ( keyString.startsWith( AvailableSettings.CLASS_CACHE_PREFIX ) ) {

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          },
          EntityCopyNotAllowedObserver.SHORT_NAME
      );
      LOG.debugf( "EntityCopyObserver strategy: %s", entityCopyObserverStrategy );
    }
    final StrategySelector strategySelector = serviceRegistry.getService( StrategySelector.class );
    return strategySelector.resolveStrategy( EntityCopyObserver.class, entityCopyObserverStrategy );
  }

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