| /* |
| * 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.bval.extras.constraints.checkdigit; |
| |
| import static java.lang.Character.getNumericValue; |
| |
| /** |
| * Modulus 10 <b>SEDOL</b> (UK Securities) Check Digit calculation/validation. |
| * <p> |
| * SEDOL Numbers are 7 character alphanumeric codes used |
| * to identify UK Securities (SEDOL stands for Stock Exchange Daily Official List). |
| * <p> |
| * Check digit calculation is based on <i>modulus 10</i> with digits being weighted |
| * based on their position, from left to right, as follows: |
| * <p> |
| * <pre><code> |
| * position: 1 2 3 4 5 6 7 |
| * weighting: 1 3 1 7 3 9 1 |
| * </code></pre> |
| * <p> |
| * See <a href="http://en.wikipedia.org/wiki/SEDOL">Wikipedia - SEDOL</a> |
| * for more details. |
| */ |
| public final class SedolValidator |
| extends ModulusValidator<Sedol> { |
| |
| /** weighting given to digits depending on their right position */ |
| private static final int[] POSITION_WEIGHT = new int[] {1, 3, 1, 7, 3, 9, 1}; |
| |
| public SedolValidator() { |
| super(10); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| protected int weightedValue( int charValue, int leftPos, int rightPos ) |
| throws Exception { |
| return (charValue * POSITION_WEIGHT[leftPos - 1]); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| protected int toInt( char character, int leftPos, int rightPos ) { |
| int charValue = getNumericValue(character); |
| if (charValue < 0 || charValue > 35) { |
| throw new IllegalArgumentException("Invalid Character[" |
| + leftPos |
| + "] = '" |
| + charValue |
| + "'"); |
| } |
| return charValue; |
| } |
| |
| } |