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 java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  
  import org.apache.carbondata.core.constants.CarbonCommonConstants;
  import org.apache.carbondata.core.scan.expression.ExpressionResult;
  import org.apache.carbondata.core.scan.expression.exception.FilterIllegalMemberException;
  import org.apache.carbondata.core.scan.expression.exception.FilterUnsupportedException;
  import org.apache.carbondata.core.scan.expression.logical.RangeExpression;
  import org.apache.carbondata.core.scan.filter.ColumnFilterInfo;
  import org.apache.carbondata.core.scan.filter.resolver.metadata.FilterResolverMetadata;
  import org.apache.carbondata.core.scan.filter.resolver.resolverinfo.ColumnResolvedFilterInfo;
  import org.apache.carbondata.core.scan.filter.resolver.resolverinfo.DimColumnResolvedFilterInfo;
  
  public class RangeDirectDictionaryVisitor extends CustomTypeDictionaryVisitor
      implements ResolvedFilterInfoVisitorIntf {
  
    /**
     * This Visitor method is used to populate the visitableObj with direct dictionary filter details
     * where the filters values will be resolve using dictionary cache.
     *
     * @param visitableObj
     * @param metadata
     * @throws FilterUnsupportedException,if exception occurs while evaluating
     * filter models.
     * @throws FilterUnsupportedException
     */
    public void populateFilterResolvedInfo(ColumnResolvedFilterInfo visitableObj,
        FilterResolverMetadata metadata) throws FilterUnsupportedException {
      if (visitableObj instanceof DimColumnResolvedFilterInfo) {
        DimColumnResolvedFilterInfo resolveDimension = (DimColumnResolvedFilterInfo) visitableObj;
        ColumnFilterInfo resolvedFilterObject = null;
        List<ExpressionResult> listOfExpressionResults = null;
        List<String> evaluateResultListFinal = new ArrayList<String>();
        try {
          listOfExpressionResults = ((RangeExpression) metadata.getExpression()).getLiterals();
  
          for (ExpressionResult result : listOfExpressionResults) {
            if (result.getString() == null) {
              evaluateResultListFinal.add(CarbonCommonConstants.MEMBER_DEFAULT_VAL);
              continue;
            }
            evaluateResultListFinal.add(result.getString());
          }
        } catch (FilterIllegalMemberException e) {
          throw new FilterUnsupportedException(e);
        }
  
        resolvedFilterObject =
            getDirectDictionaryValKeyMemberForFilter(metadata.getColumnExpression(),
                evaluateResultListFinal, metadata.isIncludeFilter(),
                metadata.getColumnExpression().getDimension().getDataType());
  
        if (!metadata.isIncludeFilter() && null != resolvedFilterObject && !resolvedFilterObject
            .getExcludeFilterList()
            .contains(CarbonCommonConstants.MEMBER_DEFAULT_VAL_SURROGATE_KEY)) {
          // Adding default surrogate key of null member inorder to not display the same while
          // displaying the report as per hive compatibility.
          resolvedFilterObject.getExcludeFilterList()
              .add(CarbonCommonConstants.MEMBER_DEFAULT_VAL_SURROGATE_KEY);
          Collections.sort(resolvedFilterObject.getExcludeFilterList());
        }
        resolveDimension.setFilterValues(resolvedFilterObject);
      }
    }
  }
  