001/**
002 * Copyright 2010-2014 The Kuali Foundation
003 *
004 * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
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 */
016package org.kuali.common.util.xml.jaxb.adapter;
017
018import javax.xml.bind.annotation.adapters.XmlAdapter;
019
020import org.kuali.common.util.Assert;
021import org.kuali.common.util.Str;
022
023import com.google.common.base.Optional;
024
025public final class FlattenOptionalStringAdapter extends XmlAdapter<String, Optional<String>> {
026
027        public FlattenOptionalStringAdapter() {
028                this(FlattenConstants.DEFAULT_CR_REPLACEMENT, FlattenConstants.DEFAULT_LF_REPLACEMENT);
029        }
030
031        public FlattenOptionalStringAdapter(String carriageReturnReplacement, String linefeedReplacement) {
032                // No blanks because this needs to work in both directions (flatten + inflate)
033                Assert.noBlanks(carriageReturnReplacement, linefeedReplacement);
034                this.carriageReturnReplacement = carriageReturnReplacement;
035                this.linefeedReplacement = linefeedReplacement;
036        }
037
038        private final String carriageReturnReplacement;
039        private final String linefeedReplacement;
040
041        @Override
042        public String marshal(Optional<String> optional) {
043                if (optional.isPresent()) {
044                        return Str.flatten(optional.get(), carriageReturnReplacement, linefeedReplacement);
045                } else {
046                        return null;
047                }
048        }
049
050        @Override
051        public Optional<String> unmarshal(String value) {
052                if (value == null) {
053                        return Optional.<String> absent();
054                } else {
055                        return Optional.<String> of(Str.inflate(value, carriageReturnReplacement, linefeedReplacement));
056                }
057        }
058
059        public String getCarriageReturnReplacement() {
060                return carriageReturnReplacement;
061        }
062
063        public String getLinefeedReplacement() {
064                return linefeedReplacement;
065        }
066
067}