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.carbondata.core.scan.filter.resolver.resolverinfo.visitor;
  
  import org.apache.carbondata.core.metadata.datatype.DataTypes;
  import org.apache.carbondata.core.metadata.encoder.Encoding;
  import org.apache.carbondata.core.scan.expression.ColumnExpression;
  import org.apache.carbondata.core.scan.expression.Expression;
  import org.apache.carbondata.core.scan.expression.logical.RangeExpression;
  
  public class FilterInfoTypeVisitorFactory {
  
    /**
     * This factory method will be used in order to get the visitor instance based on the
     * column expression metadata where filters has been applied.
     *
     * @param columnExpression
     * @return
     */
    public static ResolvedFilterInfoVisitorIntf getResolvedFilterInfoVisitor(
        ColumnExpression columnExpression, Expression exp) {
      if (exp instanceof RangeExpression) {
        if (columnExpression.getDimension().getDataType() == DataTypes.DATE) {
          return new RangeDirectDictionaryVisitor();
        } else if (columnExpression.getDimension().hasEncoding(Encoding.IMPLICIT)) {
          return new ImplicitColumnVisitor();
        } else if (columnExpression.getDimension().getDataType() != DataTypes.DATE) {
          return new RangeNoDictionaryTypeVisitor();
        }
      }
      else {
        if (null != columnExpression.getDimension()) {
          if (columnExpression.getDimension().getDataType() == DataTypes.DATE) {
            return new CustomTypeDictionaryVisitor();
          } else if (columnExpression.getDimension().hasEncoding(Encoding.IMPLICIT)) {
            return new ImplicitColumnVisitor();
          } else if (columnExpression.getDimension().getDataType() != DataTypes.DATE) {
            return new NoDictionaryTypeVisitor();
          }
        } else if (columnExpression.getMeasure().isMeasure()) {
          return new MeasureColumnVisitor();
        }
      }
      return null;
    }
  }
  