001package org.hl7.fhir.dstu3.model;
002
003/*
004  Copyright (c) 2011+, HL7, Inc.
005  All rights reserved.
006  
007  Redistribution and use in source and binary forms, with or without modification, 
008  are permitted provided that the following conditions are met:
009    
010   * Redistributions of source code must retain the above copyright notice, this 
011     list of conditions and the following disclaimer.
012   * Redistributions in binary form must reproduce the above copyright notice, 
013     this list of conditions and the following disclaimer in the documentation 
014     and/or other materials provided with the distribution.
015   * Neither the name of HL7 nor the names of its contributors may be used to 
016     endorse or promote products derived from this software without specific 
017     prior written permission.
018  
019  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 
020  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
021  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
022  IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 
023  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
024  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
025  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
026  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
027  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
028  POSSIBILITY OF SUCH DAMAGE.
029  
030 */
031
032
033
034import java.util.List;
035
036import org.apache.commons.lang3.NotImplementedException;
037import org.hl7.fhir.exceptions.FHIRException;
038import org.hl7.fhir.utilities.Utilities;
039
040/**
041 * See http://www.healthintersections.com.au/?p=1941
042 * 
043 * @author Grahame
044 *
045 */
046public class Comparison {
047
048        public class MatchProfile {
049
050  }
051
052        public static boolean matches(String c1, String c2, MatchProfile profile)  {
053          if (Utilities.noString(c1) || Utilities.noString(c2))
054                return false;
055          c1 = Utilities.normalize(c1);
056          c2 = Utilities.normalize(c2);
057          return c1.equals(c2);
058        }
059
060        public static <T extends Enum<?>> boolean matches(Enumeration<T> e1, Enumeration<T> e2, MatchProfile profile)  {
061          if (e1 == null || e2 == null)
062                return false;
063          return e1.getValue().equals(e2.getValue());
064        }
065
066        public static boolean matches(CodeableConcept c1, CodeableConcept c2, MatchProfile profile) throws FHIRException {
067          if (profile != null) 
068                throw new NotImplementedException("Not Implemented Yet");
069          
070          if (c1.getCoding().isEmpty() && c2.getCoding().isEmpty()) {
071                return matches(c1.getText(), c2.getText(), null);
072          } else {
073                // in the absence of specific guidance, we just require that all codes match
074                boolean ok = true;
075                for (Coding c : c1.getCoding()) {
076                        ok = ok && inList(c2.getCoding(), c, null);
077                }
078                for (Coding c : c2.getCoding()) {
079                        ok = ok && inList(c1.getCoding(), c, null);
080                }
081                return ok;
082          }
083  }
084
085        public static void merge(CodeableConcept dst, CodeableConcept src) {
086                if (dst.getTextElement() == null && src.getTextElement() != null)
087                        dst.setTextElement(src.getTextElement());  
088  }
089
090        
091        public static boolean inList(List<Coding> list, Coding c, MatchProfile profile) {
092          for (Coding item : list) {
093                if (matches(item, c, profile))
094                        return true;
095          }
096          return false;
097  }
098
099        public static boolean matches(Coding c1, Coding c2, MatchProfile profile) {
100          if (profile != null) 
101                throw new NotImplementedException("Not Implemented Yet");
102                
103          // in the absence of a profile, we ignore version
104          return matches(c1.getSystem(), c2.getSystem(), null) && matches(c1.getCode(), c2.getCode(), null);
105  }
106
107        public static boolean matches(Identifier i1, Identifier i2, MatchProfile profile) {
108          if (profile != null) 
109                throw new NotImplementedException("Not Implemented Yet");
110                
111          // in the absence of a profile, we ignore version
112          return matches(i1.getSystem(), i2.getSystem(), null) && matches(i1.getValue(), i2.getValue(), null);
113  }
114
115        public static void merge(Identifier dst, Identifier src) {
116                if (dst.getUseElement() == null && src.getUseElement() != null)
117                        dst.setUseElement(src.getUseElement());  
118                if (dst.getType() == null && src.getType() != null)
119                        dst.setType(src.getType());  
120                if (dst.getPeriod() == null && src.getPeriod() != null)
121                        dst.setPeriod(src.getPeriod());  
122                if (dst.getAssigner() == null && src.getAssigner() != null)
123                        dst.setAssigner(src.getAssigner());  
124  }
125
126        public static boolean matches(ContactPoint c1, ContactPoint c2, Object profile) {
127          if (profile != null) 
128                throw new NotImplementedException("Not Implemented Yet");
129                
130          // in the absence of a profile, we insist on system
131          return matches(c1.getSystemElement(), c2.getSystemElement(), null) && matches(c1.getValue(), c2.getValue(), null);
132  }
133
134        public static void merge(ContactPoint dst, ContactPoint src) {
135                if (dst.getUseElement() == null && src.getUseElement() != null)
136                        dst.setUseElement(src.getUseElement());  
137                if (dst.getPeriod() == null && src.getPeriod() != null)
138                        dst.setPeriod(src.getPeriod());  
139  }
140
141}