content: /**
   * 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.apex.malhar.contrib.misc.streamquery.condition;
  
  import java.util.HashMap;
  import java.util.Map;
  
  import org.apache.apex.malhar.lib.streamquery.condition.Condition;
  
  /**
   * An implementation of condition on column equality.
   * <p>
   * A valid row must have all key/value map in column name/value map.
   *
   * <b> Properties : </b> <br>
   *  <b> equalMap : </b> Column equal value map store.
   * @displayName Equal Value Condition
   * @category Stream Manipulators
   * @tags sql condition
   * @since 0.3.4
   * @deprecated
   */
  @Deprecated
  public class EqualValueCondition extends Condition
  {
  
    /**
     * Equal column map.
     */
    private HashMap<String, Object> equalMap = new HashMap<String, Object>();
  
    /**
     * Add column equal condition.
     */
    public void addEqualValue(String column, Object value)
    {
      equalMap.put(column, value);
    }
  
    /**
     * Check valid row.
     */
    @Override
    public boolean isValidRow(Map<String, Object> row)
    {
      // no conditions
      if (equalMap.size() == 0) {
        return true;
      }
  
      // compare each condition value
      for (Map.Entry<String, Object> entry : equalMap.entrySet()) {
        if (!row.containsKey(entry.getKey())) {
          return false;
        }
        Object value = row.get(entry.getKey());
        if (entry.getValue() == null) {
          if (value == null) {
            return true;
          }
          return false;
        }
        if (value == null) {
          return false;
        }
        if (!entry.getValue().equals(value)) {
          return false;
        }
      }
      return true;
    }
  
    /**
     * check valid join, not implemented
     *
     * @return false
     */
    @Override
    public boolean isValidJoin(Map<String, Object> row1, Map<String, Object> row2)
    {
      return false;
    }
  }
  