it.tidalwave.bluemarine2.model.spi.VirtualMediaFolder Maven / Gradle / Ivy
/*
* #%L
* *********************************************************************************************************************
*
* blueMarine2 - Semantic Media Center
* http://bluemarine2.tidalwave.it - git clone https://bitbucket.org/tidalwave/bluemarine2-src.git
* %%
* Copyright (C) 2015 - 2017 Tidalwave s.a.s. (http://tidalwave.it)
* %%
*
* *********************************************************************************************************************
*
* 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.
*
* *********************************************************************************************************************
*
* $Id$
*
* *********************************************************************************************************************
* #L%
*/
package it.tidalwave.bluemarine2.model.spi;
import javax.annotation.Nonnull;
import java.util.Collection;
import java.util.Optional;
import java.util.function.Function;
import java.nio.file.Path;
import it.tidalwave.util.Id;
import it.tidalwave.role.Identifiable;
import it.tidalwave.role.spi.DefaultDisplayable;
import it.tidalwave.bluemarine2.model.MediaFolder;
import it.tidalwave.bluemarine2.model.role.EntityWithPath;
import it.tidalwave.bluemarine2.model.finder.EntityFinder;
import lombok.Getter;
/***********************************************************************************************************************
*
* @author Fabrizio Giudici
* @version $Id$
*
**********************************************************************************************************************/
public class VirtualMediaFolder extends EntityWithRoles implements MediaFolder
{
// These two interfaces are needed to avoid clashes with constructor overloading
public static interface EntityCollectionFactory extends Function>
{
}
public static interface EntityFinderFactory extends Function
{
}
@Getter @Nonnull
private final Path path;
@Nonnull
private final Optional extends MediaFolder> optionalParent;
@Nonnull
private final EntityFinderFactory finderFactory;
public VirtualMediaFolder (final @Nonnull MediaFolder parent,
final @Nonnull Path pathSegment,
final @Nonnull String displayName,
final @Nonnull EntityCollectionFactory childrenFactory)
{
this(Optional.of(parent), pathSegment, displayName, Optional.of(childrenFactory), Optional.empty());
}
public VirtualMediaFolder (final @Nonnull MediaFolder parent,
final @Nonnull Path pathSegment,
final @Nonnull String displayName,
final @Nonnull EntityFinderFactory finderFactory)
{
this(Optional.of(parent), pathSegment, displayName, Optional.empty(), Optional.of(finderFactory));
}
public VirtualMediaFolder (final @Nonnull Optional extends MediaFolder> optionalParent,
final @Nonnull Path pathSegment,
final @Nonnull String displayName,
final @Nonnull EntityCollectionFactory childrenFactory)
{
this(optionalParent, pathSegment, displayName, Optional.of(childrenFactory), Optional.empty());
}
public VirtualMediaFolder (final @Nonnull Optional extends MediaFolder> optionalParent,
final @Nonnull Path pathSegment,
final @Nonnull String displayName,
final @Nonnull EntityFinderFactory finderFactory)
{
this(optionalParent, pathSegment, displayName, Optional.empty(), Optional.of(finderFactory));
}
private VirtualMediaFolder (final @Nonnull Optional extends MediaFolder> optionalParent,
final @Nonnull Path pathSegment,
final @Nonnull String displayName,
final @Nonnull Optional childrenSupplier,
final @Nonnull Optional finderFactory)
{
super((Identifiable)() -> new Id(absolutePath(optionalParent, pathSegment).toString()),
new DefaultDisplayable(displayName));
this.path = absolutePath(optionalParent, pathSegment);
this.optionalParent = optionalParent;
this.finderFactory = finderFactory.orElse(
mediaFolder -> new FactoryBasedEntityFinder(mediaFolder, childrenSupplier.get()));
}
@Override @Nonnull
public Optional getParent()
{
return (Optional)(Object)optionalParent;
}
@Override @Nonnull
public EntityFinder findChildren()
{
return finderFactory.apply(this);
}
@Override @Nonnull
public String toString()
{
return String.format("VirtualMediaFolder(%s)", path);
}
@Nonnull
private static Path absolutePath (final @Nonnull Optional extends MediaFolder> optionalParent,
final @Nonnull Path pathSegment)
{
return optionalParent.map(parent -> parent.getPath().resolve(pathSegment)).orElse(pathSegment);
}
}
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