| /* |
| * 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; |
| } |
| } |