ImportManagementPolicy.java

/*
 * 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.stanbol.ontologymanager.ontonet.api.collector;

/**
 * The policies that determine how OntoNet should handle OWL import statements and/or the imported ontologies
 * (i.e. import targets) when performing operations such as load/export of ontologies, and rewriting of import
 * statements.
 * 
 * @author alexdma
 * 
 */
public enum ImportManagementPolicy {

    /**
     * The root ontology contains all the import statements that point to (recursively) imported ontologies,
     * which instead are cleared of all import statements. Can be used to minimize the number of statements
     * and remove cycles.
     */
    FLATTEN,

    /**
     * Remove all import statements from the root ontology's import closure, and recursively copy all the
     * axioms from imported ontologies into the root one.
     */
    MERGE,

    /**
     * Keep the import structure as it is. Note that the import targets can still be rewritten even by
     * following this policy.
     */
    PRESERVE;

}