package org.pojomatic.diff;
   
   import java.util.Collections;
   import java.util.List;
   
   import org.pojomatic.Pojomatic;
   import org.pojomatic.annotations.Property;
   
   public class PropertyDifferences implements Differences {
    @Property
    private final List<Difference> differences;
  
    /**
     * @param differences cannot be {@code null} or empty
     * @throws NullPointerException if {@code differences} is {@code null}
     * @throws IllegalArgumentException if {@code differences.isEmpty()} is {@code true}
     */
    public PropertyDifferences(List<Difference> differences) {
      if (differences == null) {
        throw new NullPointerException("list of differences is null");
      }
      if (differences.isEmpty()) {
        throw new IllegalArgumentException("list of differences is empty");
      }
      this.differences = Collections.unmodifiableList(differences);
    }
  
    @Override
    public List<Difference> differences() {
      return differences;
    }
  
    @Override
    public boolean areEqual() {
      return false;
    }
  
    @Override
    public String toString() {
      return differences.toString();
    }
  
    @Override
    public boolean equals(Object other) {
      return Pojomatic.equals(this, other);
    }
  
    @Override
    public int hashCode() {
      return Pojomatic.hashCode(this);
    }
  }