/*
* Copyright (c) 2007-2009, James Leigh All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of the openrdf.org nor the names of its contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/
package org.openrdf.repository.object.advisers.helpers;
import java.util.Collection;
import java.util.Set;
import org.openrdf.repository.object.traits.Refreshable;
/**
* Internal interface for mapping roles. Allows access to property values as a
* Set or as a single value.
*
* @author James Leigh
*/
public interface PropertySet extends Refreshable {
/**
* Get all values for property.
*
* @return set of all values
*/
public abstract Set<Object> getAll();
/**
* Replaces all values with the values given.
*
* @param all
*/
public abstract void setAll(Set<?> all);
/**
* Assumes there is zero or one value and return null or the value.
*
* @return null or the single value
*/
public abstract Object getSingle();
/**
* Replace all values with this value
*
* @param single
*/
public abstract void setSingle(Object single);
/**
* Append all values with the values given.
*
* @param all
*/
public abstract boolean addAll(Collection<?> all);
/**
* Append values with this value
*
* @param single
*/
public abstract boolean add(Object single);
}