001package ca.uhn.fhir.model.primitive;
002
003/*
004 * #%L
005 * HAPI FHIR - Core Library
006 * %%
007 * Copyright (C) 2014 - 2016 University Health Network
008 * %%
009 * Licensed under the Apache License, Version 2.0 (the "License");
010 * you may not use this file except in compliance with the License.
011 * You may obtain a copy of the License at
012 * 
013 *      http://www.apache.org/licenses/LICENSE-2.0
014 * 
015 * Unless required by applicable law or agreed to in writing, software
016 * distributed under the License is distributed on an "AS IS" BASIS,
017 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
018 * See the License for the specific language governing permissions and
019 * limitations under the License.
020 * #L%
021 */
022
023import java.net.URI;
024import java.net.URISyntaxException;
025
026import org.apache.commons.lang3.StringUtils;
027
028import ca.uhn.fhir.model.api.BasePrimitive;
029import ca.uhn.fhir.model.api.annotation.DatatypeDef;
030import ca.uhn.fhir.model.api.annotation.SimpleSetter;
031
032@DatatypeDef(name = "uri")
033public class UriDt extends BasePrimitive<String> {
034
035        /**
036         * Creates a new UriDt instance which uses the given OID as the content (and prepends "urn:oid:" to the OID string
037         * in the value of the newly created UriDt, per the FHIR specification).
038         * 
039         * @param theOid
040         *            The OID to use (<code>null</code> is acceptable and will result in a UriDt instance with a
041         *            <code>null</code> value)
042         * @return A new UriDt instance
043         */
044        public static UriDt fromOid(String theOid) {
045                if (theOid == null) {
046                        return new UriDt();
047                }
048                return new UriDt("urn:oid:" + theOid);
049        }
050
051        private static final org.slf4j.Logger ourLog = org.slf4j.LoggerFactory.getLogger(UriDt.class);
052
053        /**
054         * Create a new String
055         */
056        public UriDt() {
057                // nothing
058        }
059
060        /**
061         * Create a new String
062         */
063        @SimpleSetter
064        public UriDt(@SimpleSetter.Parameter(name = "theUri") String theValue) {
065                setValueAsString(theValue);
066        }
067
068        @Override
069        protected String encode(String theValue) {
070                return theValue;
071        }
072
073        @Override
074        public boolean equals(Object obj) {
075                if (this == obj)
076                        return true;
077                if (obj == null)
078                        return false;
079                if (getClass() != obj.getClass())
080                        return false;
081
082                UriDt other = (UriDt) obj;
083                if (getValue() == null && other.getValue() == null) {
084                        return true;
085                }
086                if (getValue() == null || other.getValue() == null) {
087                        return false;
088                }
089
090                String normalize = normalize(getValue());
091                String normalize2 = normalize(other.getValue());
092                return normalize.equals(normalize2);
093        }
094
095        /**
096         * Compares the given string to the string representation of this URI. In many cases it is preferable to use this
097         * instead of the standard {@link #equals(Object)} method, since that method returns <code>false</code> unless it is
098         * passed an instance of {@link UriDt}
099         */
100        public boolean equals(String theString) {
101                return StringUtils.equals(getValueAsString(), theString);
102        }
103
104        @Override
105        public int hashCode() {
106                final int prime = 31;
107                int result = 1;
108
109                String normalize = normalize(getValue());
110                result = prime * result + ((normalize == null) ? 0 : normalize.hashCode());
111
112                return result;
113        }
114
115        private String normalize(String theValue) {
116                if (theValue == null) {
117                        return null;
118                }
119                URI retVal;
120                try {
121                        retVal = new URI(theValue).normalize();
122                } catch (URISyntaxException e1) {
123                        ourLog.debug("Failed to normalize URL '{}', message was: {}", theValue, e1.toString());
124                        return theValue;
125                }
126                String urlString = retVal.toString();
127                if (urlString.endsWith("/") && urlString.length() > 1) {
128                        try {
129                                retVal = new URI(urlString.substring(0, urlString.length() - 1));
130                        } catch (URISyntaxException e) {
131                                ourLog.debug("Failed to normalize URL '{}', message was: {}", urlString, e.toString());
132                        }
133                }
134                return retVal.toASCIIString();
135        }
136
137        @Override
138        protected String parse(String theValue) {
139                return theValue;
140        }
141
142}