/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.carbondata.core.preagg;

import org.apache.carbondata.core.metadata.schema.table.column.ColumnSchema;

/**
 * column present in query
 */
public class QueryColumn {

  /**
   * parent column schema
   */
  private ColumnSchema columnSchema;

  /**
   * is filter column
   */
  private boolean isFilterColumn;

  /**
   * timeseries udf applied on column
   */
  private String timeseriesFunction;

  public QueryColumn(ColumnSchema columnSchema, boolean isFilterColumn, String timeseriesFunction) {
    this.columnSchema = columnSchema;
    this.isFilterColumn = isFilterColumn;
    this.timeseriesFunction = timeseriesFunction;
  }

  public ColumnSchema getColumnSchema() {
    return columnSchema;
  }

  public boolean isFilterColumn() {
    return isFilterColumn;
  }

  public String getTimeseriesFunction() {
    return timeseriesFunction;
  }

  @Override public boolean equals(Object o) {
    if (this == o) {
      return true;
    }
    if (o == null || getClass() != o.getClass()) {
      return false;
    }
    QueryColumn that = (QueryColumn) o;
    if (isFilterColumn != that.isFilterColumn) {
      return false;
    }
    if (!columnSchema.equals(that.columnSchema)) {
      return false;
    }
    return timeseriesFunction != null ?
        timeseriesFunction.equals(that.timeseriesFunction) :
        that.timeseriesFunction == null;
  }

  @Override public int hashCode() {
    int result = columnSchema.hashCode();
    result = 31 * result + (timeseriesFunction != null ? timeseriesFunction.hashCode() : 0);
    result = 31 * result + (isFilterColumn ? 1 : 0);
    return result;
  }
}
