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.linear; 19dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond 20dee0849a9704d532af0b550146cbafbaa6ee1d19Raymondimport org.apache.commons.math.FieldElement; 21dee0849a9704d532af0b550146cbafbaa6ee1d19Raymondimport org.apache.commons.math.linear.MatrixVisitorException; 22dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond 23dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond/** 24dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * Interface defining a visitor for matrix entries. 25dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * 26dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * @param <T> the type of the field elements 27dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * @version $Revision: 1073158 $ $Date: 2011-02-21 22:46:52 +0100 (lun. 21 févr. 2011) $ 28dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * @since 2.0 29dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond */ 30dee0849a9704d532af0b550146cbafbaa6ee1d19Raymondpublic interface FieldMatrixChangingVisitor<T extends FieldElement<?>> { 31dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond 32dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond /** 33dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * Start visiting a matrix. 34dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * <p>This method is called once before any entry of the matrix is visited.</p> 35dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * @param rows number of rows of the matrix 36dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * @param columns number of columns of the matrix 37dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * @param startRow Initial row index 38dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * @param endRow Final row index (inclusive) 39dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * @param startColumn Initial column index 40dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * @param endColumn Final column index (inclusive) 41dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond */ 42dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond void start(int rows, int columns, 43dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond int startRow, int endRow, int startColumn, int endColumn); 44dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond 45dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond /** 46dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * Visit one matrix entry. 47dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * @param row row index of the entry 48dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * @param column column index of the entry 49dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * @param value current value of the entry 50dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * @return the new value to be set for the entry 51dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * @throws MatrixVisitorException if something wrong occurs 52dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond */ 53dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond T visit(int row, int column, T value) 54dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond throws MatrixVisitorException; 55dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond 56dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond /** 57dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * End visiting a matrix. 58dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * <p>This method is called once after all entries of the matrix have been visited.</p> 59dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond * @return the value that the <code>walkInXxxOrder</code> must return 60dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond */ 61dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond T end(); 62dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond 63dee0849a9704d532af0b550146cbafbaa6ee1d19Raymond} 64