001// --------------------------------------------------------------------------------
002// Copyright 2002-2025 Echo Three, LLC
003//
004// Licensed under the Apache License, Version 2.0 (the "License");
005// you may not use this file except in compliance with the License.
006// You may obtain a copy of the License at
007//
008//     http://www.apache.org/licenses/LICENSE-2.0
009//
010// Unless required by applicable law or agreed to in writing, software
011// distributed under the License is distributed on an "AS IS" BASIS,
012// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013// See the License for the specific language governing permissions and
014// limitations under the License.
015// --------------------------------------------------------------------------------
016
017package com.echothree.model.control.sequence.server.logic.checksum;
018
019import javax.enterprise.context.ApplicationScoped;
020import javax.enterprise.inject.spi.CDI;
021import org.apache.commons.lang.StringUtils;
022
023@ApplicationScoped
024public class NoneSequenceChecksum
025        implements SequenceChecksum {
026
027    protected NoneSequenceChecksum() {
028        super();
029    }
030
031    public static NoneSequenceChecksum getInstance() {
032        return CDI.current().select(NoneSequenceChecksum.class).get();
033    }
034
035    @Override
036    public String calculate(String value) {
037        return StringUtils.EMPTY;
038    }
039
040    @Override
041    public String regexp() {
042        return StringUtils.EMPTY;
043    }
044
045    @Override
046    public boolean verify(String value) {
047        return true;
048    }
049
050}