/*
 * Copyright © 2014 - 2021 Leipzig University (Database Research Group)
 *
 * 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 org.gradoop.temporal.model.impl.operators.matching.common.query.predicates;


import org.gradoop.flink.model.impl.operators.matching.common.query.predicates.QueryComparable;
import org.gradoop.gdl.model.comparables.ComparableExpression;
import org.gradoop.temporal.model.impl.operators.matching.common.query.predicates.comparables.TemporalComparable;

import java.io.Serializable;

/**
 * Wraps a {@link ComparableExpression}, that may be temporal
 */
public abstract class QueryComparableTPGM extends QueryComparable implements Serializable {

  /**
   * Checks whether the comparable is related to time data
   *
   * @return true iff comparable denotes time data
   */
  public boolean isTemporal() {
    return this instanceof TemporalComparable;
  }

  /**
   * Returns the wrapped comparable
   *
   * @return wrapped comparable
   */
  public abstract ComparableExpression getWrappedComparable();

  @Override
  public boolean equals(Object o) {
    if (!(o instanceof QueryComparableTPGM)) {
      return false;
    }
    return getWrappedComparable().equals(((QueryComparableTPGM) o).getWrappedComparable());
  }

  @Override
  public int hashCode() {
    return getWrappedComparable().hashCode();
  }

  @Override
  public String toString() {
    return getWrappedComparable().toString();
  }

}

