/*
 * Copyright 2013 Corpuslinguistic working group Humboldt University Berlin.
 *
 * 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 annis.gui.objects;

import java.io.Serializable;
import java.util.HashSet;
import java.util.LinkedHashSet;
import java.util.Objects;
import java.util.Set;

/**
 * A POJO representing a query.
 * 
 * This objects holds all relevant information about the state of the UI
 * related to querying, e.g. the AQL, the search options and the type of the query.
 * 
 * @author Thomas Krause <krauseto@hu-berlin.de>
 */
public class Query implements Serializable, Cloneable
{
  private String query;
  private Set<String> corpora;

  public Query()
  {
    corpora = new HashSet<>();
  }

  public Query(String query,
    Set<String> corpora)
  {
    this.query = query == null ? "" : query;
    this.corpora = corpora == null ?  new LinkedHashSet<String>() : corpora;
  }

  
  public String getQuery()
  {
    return query;
  }

  public void setQuery(String query)
  {
    this.query = query == null ? "" : query;
  }

  public Set<String> getCorpora()
  {
    return corpora;
  }

  public void setCorpora(Set<String> corpora)
  {
    this.corpora = corpora == null ? new LinkedHashSet<String>() : corpora;
  }

  @Override
  public int hashCode()
  {
    return Objects.hash(corpora, query);
  }

  
  @Override
  public boolean equals(Object obj)
  {
    if (obj == null)
    {
      return false;
    }
    if (getClass() != obj.getClass())
    {
      return false;
    }
    final Query other = (Query) obj;
    
    return Objects.equals(this.query, other.query)
      && Objects.equals(this.corpora, other.corpora);
  }

  @Override
  public Query clone() throws CloneNotSupportedException
  {
    return (Query) super.clone();
  }

  
}