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;
  
  import org.apache.carbondata.core.scan.expression.BinaryExpression;
  import org.apache.carbondata.core.scan.expression.Expression;
  import org.apache.carbondata.core.scan.filter.intf.ExpressionType;
  import org.apache.carbondata.core.scan.filter.intf.FilterExecutorType;
  import org.apache.carbondata.core.scan.filter.resolver.resolverinfo.DimColumnResolvedFilterInfo;
  import org.apache.carbondata.core.scan.filter.resolver.resolverinfo.MeasureColumnResolvedFilterInfo;
  
  public class LogicalFilterResolverImpl implements FilterResolverIntf {
    /**
     *
     */
    private static final long serialVersionUID = 5734382980564402914L;
  
    protected FilterResolverIntf leftEvaluator;
  
    protected FilterResolverIntf rightEvaluator;
  
    protected ExpressionType filterExpressionType;
  
    private BinaryExpression filterExpression;
  
    public LogicalFilterResolverImpl(FilterResolverIntf leftEvaluator,
        FilterResolverIntf rightEvaluator, BinaryExpression currentExpression) {
      this.leftEvaluator = leftEvaluator;
      this.rightEvaluator = rightEvaluator;
      this.filterExpressionType = currentExpression.getFilterExpressionType();
      this.filterExpression = currentExpression;
    }
  
    /**
     * Logical filter resolver will return the left and right filter expresion
     * node for filter evaluation, so in this instance no implementation is required.
     *
     */
    @Override
    public void resolve() {
  
    }
  
    /**
     * Since its a binary condition expresion the getLeft method will get the left
     * node of filter expression
     *
     * @return FilterResolverIntf.
     */
    public FilterResolverIntf getLeft() {
      return leftEvaluator;
    }
  
    /**
     * Since its a binary condition expresion the getRight method will get the left
     * node of filter expression
     *
     * @return FilterResolverIntf.
     */
    public FilterResolverIntf getRight() {
      return rightEvaluator;
    }
  
    @Override
    public DimColumnResolvedFilterInfo getDimColResolvedFilterInfo() {
      return null;
    }
  
    @Override
    public MeasureColumnResolvedFilterInfo getMsrColResolvedFilterInfo() {
      return null;
    }
  
    @Override
    public FilterExecutorType getFilterExecutorType() {
      switch (filterExpressionType) {
        case OR:
          return FilterExecutorType.OR;
        case AND:
          return FilterExecutorType.AND;
  
        default:
          return null;
      }
    }
  
    @Override
    public Expression getFilterExpression() {
      return filterExpression;
    }
  }
  