com.phloc.commons.convert.UnidirectionalConverterHasIDID Maven / Gradle / Ivy
/**
* Copyright (C) 2006-2015 phloc systems
* http://www.phloc.com
* office[at]phloc[dot]com
*
* 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 com.phloc.commons.convert;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import com.phloc.commons.id.IHasID;
/**
* A unidirectional converter that extracts the ID from an object implementing
* {@link IHasID}.
*
* @author Philip Helger
* @param
* The ID type
*/
public final class UnidirectionalConverterHasIDID implements
IUnidirectionalConverter , DATATYPE>
{
@Nullable
public DATATYPE convert (@Nullable final IHasID aInput)
{
return aInput == null ? null : aInput.getID ();
}
@Nonnull
public static UnidirectionalConverterHasIDID create ()
{
return new UnidirectionalConverterHasIDID ();
}
}