1dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond/* 2dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * Licensed to the Apache Software Foundation (ASF) under one or more 3dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * contributor license agreements. See the NOTICE file distributed with 4dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * this work for additional information regarding copyright ownership. 5dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * The ASF licenses this file to You under the Apache License, Version 2.0 6dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * (the "License"); you may not use this file except in compliance with 7dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * the License. You may obtain a copy of the License at 8dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * 9dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * http://www.apache.org/licenses/LICENSE-2.0 10dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * 11dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * Unless required by applicable law or agreed to in writing, software 12dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * distributed under the License is distributed on an "AS IS" BASIS, 13dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * See the License for the specific language governing permissions and 15dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * limitations under the License. 16dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond */ 17dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond 18dee0849a9704d532af0b550146cbafbaa6ee1d19Raymondpackage org.apache.commons.math.optimization.linear; 19dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond 20dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond/** 21dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * Types of relationships between two cells in a Solver {@link LinearConstraint}. 22dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * @version $Revision: 1003886 $ $Date: 2010-10-02 23:04:44 +0200 (sam. 02 oct. 2010) $ 23dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * @since 2.0 24dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond */ 25dee0849a9704d532af0b550146cbafbaa6ee1d19Raymondpublic enum Relationship { 26dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond 27dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond /** Equality relationship. */ 28dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond EQ("="), 29dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond 30dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond /** Lesser than or equal relationship. */ 31dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond LEQ("<="), 32dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond 33dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond /** Greater than or equal relationship. */ 34dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond GEQ(">="); 35dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond 36dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond /** Display string for the relationship. */ 37dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond private final String stringValue; 38dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond 39dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond /** Simple constructor. 40dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * @param stringValue display string for the relationship 41dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond */ 42dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond private Relationship(String stringValue) { 43dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond this.stringValue = stringValue; 44dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond } 45dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond 46dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond /** {@inheritDoc} */ 47dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond @Override 48dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond public String toString() { 49dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond return stringValue; 50dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond } 51dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond 52dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond /** 53dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * Get the relationship obtained when multiplying all coefficients by -1. 54dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * @return relationship obtained when multiplying all coefficients by -1 55dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond */ 56dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond public Relationship oppositeRelationship() { 57dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond switch (this) { 58dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond case LEQ : 59dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond return GEQ; 60dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond case GEQ : 61dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond return LEQ; 62dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond default : 63dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond return EQ; 64dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond } 65dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond } 66dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond 67dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond} 68