org.dbrain.binder.system.directory.ServiceKeyBuilderImpl Maven / Gradle / Ivy

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Guice-like facade to the unfriendly HK2 service locator.

There is a newer version: 0.13

/*
 * Copyright [2015] [Eric Poitras]
 *
 *     Licensed under the Apache License, Version 2.0 (the "License");
 *     you may not use this file except in compliance with the License.
 *     You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 *     Unless required by applicable law or agreed to in writing, software
 *     distributed under the License is distributed on an "AS IS" BASIS,
 *     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *     See the License for the specific language governing permissions and
 *     limitations under the License.
 */

package org.dbrain.binder.system.directory;

import org.dbrain.binder.directory.ServiceKey;
import org.dbrain.binder.system.util.AnnotationBuilder;

import javax.inject.Named;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.HashSet;
import java.util.Set;

/**
 * Created by epoitras on 3/15/15.
 */
public class ServiceKeyBuilderImpl implements ServiceKey.Builder {

    private final Type     serviceType;
    private final Class serviceClass;
    private final Set qualifiers = new HashSet<>();

    public ServiceKeyBuilderImpl( Type serviceType, Class serviceClass ) {
        this.serviceType = serviceType;
        this.serviceClass = serviceClass;
    }

    @Override
    public ServiceKeyBuilderImpl qualifiedBy( Annotation quality ) {
        if ( quality != null ) {
            qualifiers.add( quality );
        }
        return this;
    }

    @Override
    public ServiceKeyBuilderImpl qualifiedBy( Class quality ) {
        if ( quality != null ) {
            return qualifiedBy( AnnotationBuilder.of( quality ) );
        } else {
            return this;
        }
    }

    @Override
    public ServiceKeyBuilderImpl qualifiedBy( Iterable quality ) {
        if ( quality != null ) {
            for ( Annotation a : quality ) {
                qualifiedBy( a );
            }
        }
        return this;
    }

    @Override
    public ServiceKeyBuilderImpl named( String name ) {
        if ( name != null ) {
            return qualifiedBy( AnnotationBuilder.of( Named.class, name ) );
        } else {
            return this;
        }
    }

    @Override
    public ServiceKey build() {
        return new ServiceKeyImpl<>( serviceType, serviceClass, qualifiers );
    }


}