code: package it.unibz.inf.ontop.spec.ontology.impl;
  
  /*
   * #%L
   * ontop-obdalib-core
   * %%
   * Copyright (C) 2009 - 2014 Free University of Bozen-Bolzano
   * %%
   * 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.
   * #L%
   */
  
  import com.google.common.collect.ImmutableList;
  
  import it.unibz.inf.ontop.spec.ontology.NaryAxiom;
  
  public class NaryAxiomImpl<T> implements NaryAxiom<T> {
  
  	private final ImmutableList<T> components;
  	
  	NaryAxiomImpl(ImmutableList<T> components) {
  		if (components.size() < 2)
  			throw new IllegalArgumentException("At least two components are expected in NaryAxiom");
  
  		this.components = components;
  	}
  	
  	@Override
  	public ImmutableList<T> getComponents() {
  		return components;
  	}
  
  
  	@Override
  	public boolean equals(Object obj) {
  		if (obj instanceof NaryAxiomImpl<?>) {
  			NaryAxiomImpl<T> other = (NaryAxiomImpl<T>)obj;
  			return components.equals(other.components);
  		}
  		return false;
  	}
  	
  	@Override
  	public int hashCode() {
  		return components.hashCode();
  	}
  	
  	@Override
  	public String toString() {
  		return "disjoint(" + components + ")";
  	}
  }
  