| /******************************************************************************* |
| * Copyright (c) 2010, 2013 Sonatype, Inc. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Stuart McCulloch (Sonatype, Inc.) - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.sisu.wire; |
| |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import javax.inject.Inject; |
| import javax.inject.Singleton; |
| |
| import com.google.inject.Injector; |
| import com.google.inject.TypeLiteral; |
| import com.google.inject.spi.TypeConverter; |
| import com.google.inject.spi.TypeConverterBinding; |
| |
| /** |
| * Lazy cache of known {@link TypeConverter}s. |
| */ |
| @Singleton |
| final class TypeConverterCache |
| { |
| // ---------------------------------------------------------------------- |
| // Implementation fields |
| // ---------------------------------------------------------------------- |
| |
| private final Map<TypeLiteral<?>, TypeConverter> converterMap = |
| new ConcurrentHashMap<TypeLiteral<?>, TypeConverter>( 16, 0.75f, 1 ); |
| |
| private final Injector injector; |
| |
| // ---------------------------------------------------------------------- |
| // Constructors |
| // ---------------------------------------------------------------------- |
| |
| @Inject |
| TypeConverterCache( final Injector injector ) |
| { |
| this.injector = injector; |
| } |
| |
| // ---------------------------------------------------------------------- |
| // Public methods |
| // ---------------------------------------------------------------------- |
| |
| public TypeConverter getTypeConverter( final TypeLiteral<?> type ) |
| { |
| TypeConverter converter = converterMap.get( type ); |
| if ( null == converter ) |
| { |
| for ( final TypeConverterBinding b : injector.getTypeConverterBindings() ) |
| { |
| if ( b.getTypeMatcher().matches( type ) ) |
| { |
| converter = b.getTypeConverter(); |
| converterMap.put( type, converter ); |
| break; |
| } |
| } |
| } |
| return converter; |
| } |
| } |