| /** |
| * 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.atlas.repository.util; |
| |
| import org.apache.atlas.model.SearchFilter; |
| import org.apache.atlas.model.TypeCategory; |
| import org.apache.atlas.model.typedef.AtlasBaseTypeDef; |
| import org.apache.atlas.model.typedef.AtlasClassificationDef; |
| import org.apache.atlas.model.typedef.AtlasEntityDef; |
| import org.apache.atlas.type.AtlasClassificationType; |
| import org.apache.atlas.type.AtlasEntityType; |
| import org.apache.atlas.type.AtlasType; |
| import org.apache.commons.collections.Predicate; |
| import org.apache.commons.collections.PredicateUtils; |
| import org.apache.commons.collections.functors.NotPredicate; |
| import org.apache.commons.lang.StringUtils; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Objects; |
| |
| public class FilterUtil { |
| public static Predicate getPredicateFromSearchFilter(SearchFilter searchFilter) { |
| List<Predicate> predicates = new ArrayList<>(); |
| |
| final String type = searchFilter.getParam(SearchFilter.PARAM_TYPE); |
| final String name = searchFilter.getParam(SearchFilter.PARAM_NAME); |
| final String supertype = searchFilter.getParam(SearchFilter.PARAM_SUPERTYPE); |
| final String notSupertype = searchFilter.getParam(SearchFilter.PARAM_NOT_SUPERTYPE); |
| |
| // Add filter for the type/category |
| if (StringUtils.isNotBlank(type)) { |
| predicates.add(getTypePredicate(type)); |
| } |
| |
| // Add filter for the name |
| if (StringUtils.isNotBlank(name)) { |
| predicates.add(getNamePredicate(name)); |
| } |
| |
| // Add filter for the supertype |
| if (StringUtils.isNotBlank(supertype)) { |
| predicates.add(getSuperTypePredicate(supertype)); |
| } |
| |
| // Add filter for the supertype negation |
| if (StringUtils.isNotBlank(notSupertype)) { |
| predicates.add(new NotPredicate(getSuperTypePredicate(notSupertype))); |
| } |
| |
| return PredicateUtils.allPredicate(predicates); |
| } |
| |
| private static Predicate getNamePredicate(final String name) { |
| return new Predicate() { |
| private boolean isAtlasType(Object o) { |
| return o instanceof AtlasType; |
| } |
| |
| @Override |
| public boolean evaluate(Object o) { |
| return o != null && isAtlasType(o) && Objects.equals(((AtlasType) o).getTypeName(), name); |
| } |
| }; |
| } |
| |
| private static Predicate getSuperTypePredicate(final String supertype) { |
| return new Predicate() { |
| private boolean isClassificationType(Object o) { |
| return o instanceof AtlasClassificationType; |
| } |
| |
| private boolean isEntityType(Object o) { |
| return o instanceof AtlasEntityType; |
| } |
| |
| @Override |
| public boolean evaluate(Object o) { |
| return (isClassificationType(o) && ((AtlasClassificationType) o).getAllSuperTypes().contains(supertype))|| |
| (isEntityType(o) && ((AtlasEntityType)o).getAllSuperTypes().contains(supertype)); |
| } |
| }; |
| } |
| |
| private static Predicate getTypePredicate(final String type) { |
| return new Predicate() { |
| @Override |
| public boolean evaluate(Object o) { |
| if (o instanceof AtlasType) { |
| AtlasType atlasType = (AtlasType)o; |
| |
| switch (type.toUpperCase()) { |
| case "CLASS": |
| case "ENTITY": |
| return atlasType.getTypeCategory() == TypeCategory.ENTITY; |
| case "TRAIT": |
| case "CLASSIFICATION": |
| return atlasType.getTypeCategory() == TypeCategory.CLASSIFICATION; |
| case "STRUCT": |
| return atlasType.getTypeCategory() == TypeCategory.STRUCT; |
| case "ENUM": |
| return atlasType.getTypeCategory() == TypeCategory.ENUM; |
| default: |
| // This shouldn't have happened |
| return false; |
| } |
| } |
| return false; |
| } |
| }; |
| } |
| } |