| /** |
| * 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.jena.sparql.core; |
| |
| /** A {@code QuadAction} is record of a type of change to a {@code DatasetGraph}. |
| * <p> |
| * {@code DatasetGraph} are sets of quads. |
| * An {@code add} only affects the state of the {@code DatasetGraph} |
| * if a quad of the same value was not present, |
| * and a {@code delete} only affects the state of the {@code DatasetGraph} |
| * if a quad was present. |
| * <p> |
| * A {@code QuadAction} can be an {@code ADD} or {@code DELETE}, indicating a change |
| * to the {@code DatasetGraph} actually occured (this assumes checking is done - |
| * {@link DatasetChanges} generators may not check - see implementation for details). |
| * Otherwise a {@code NO_ADD}, {@code NO_DELETE} {@code QuadAction} is used. |
| */ |
| |
| public enum QuadAction { |
| ADD("A"), DELETE("D"), NO_ADD("#A"), NO_DELETE("#D") ; |
| public final String label ; |
| QuadAction(String label) { this.label = label ; } |
| |
| } |