001package org.hl7.fhir.dstu2.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 org.apache.commons.lang3.StringUtils;
035import org.apache.commons.lang3.builder.EqualsBuilder;
036import org.apache.commons.lang3.builder.HashCodeBuilder;
037import org.hl7.fhir.instance.model.api.IBaseHasExtensions;
038import org.hl7.fhir.instance.model.api.IPrimitiveType;
039
040public abstract class PrimitiveType<T> extends Type implements IPrimitiveType<T>, IBaseHasExtensions {
041
042        private static final long serialVersionUID = 3L;
043
044        private T myCoercedValue;
045        private String myStringValue;
046
047        public T getValue() {
048                return myCoercedValue;
049        }
050
051        public String asStringValue() {
052                return myStringValue;
053        }
054
055        @Override
056        public int hashCode() {
057                return new HashCodeBuilder().append(getValue()).toHashCode();
058        }
059
060        public PrimitiveType<T> setValue(T theValue) {
061                myCoercedValue = theValue;
062                updateStringValue();
063                return this;
064        }
065
066        protected void updateStringValue() {
067                if (myCoercedValue == null) {
068                        myStringValue = null;
069                } else {
070                        // NB this might be null
071                        myStringValue = encode(myCoercedValue);
072                }
073        }
074
075        @Override
076        public boolean isEmpty() {
077                return super.isEmpty() && StringUtils.isBlank(getValueAsString());
078        }
079
080        public void fromStringValue(String theValue) {
081                if (theValue == null) {
082                        myCoercedValue = null;
083                } else {
084                        // NB this might be null
085                        myCoercedValue = parse(theValue);
086                }
087                myStringValue = theValue;
088        }
089
090        /**
091         * Subclasses must override to convert an encoded representation of this datatype into a "coerced" one
092         * 
093         * @param theValue
094         *            Will not be null
095         * @return May return null if the value does not correspond to anything
096         */
097        protected abstract T parse(String theValue);
098
099        /**
100         * Subclasses must override to convert a "coerced" value into an encoded one.
101         * 
102         * @param theValue
103         *            Will not be null
104         * @return May return null if the value does not correspond to anything
105         */
106        protected abstract String encode(T theValue);
107
108        public boolean isPrimitive() {
109                return true;
110        }
111        
112        public String primitiveValue() {
113                return asStringValue();
114        }
115
116        @Override
117        public String toString() {
118                return getClass().getSimpleName() + "[" + asStringValue() + "]";
119        }
120
121        public boolean hasValue() {
122          return !StringUtils.isBlank(getValueAsString());
123        }
124
125        public String getValueAsString() {
126                return asStringValue();
127        }
128
129        public void setValueAsString(String theValue) {
130                fromStringValue(theValue);
131        }
132
133        protected Type typedCopy() {
134                return copy();
135        }
136
137        public abstract Type copy();
138
139        @Override
140        public boolean equalsDeep(Base obj) {
141                if (!super.equalsDeep(obj))
142                        return false;
143                if (obj == null) {
144                        return false;
145                }
146                if (!(obj.getClass() == getClass())) {
147                        return false;
148                }
149
150                PrimitiveType<?> o = (PrimitiveType<?>) obj;
151
152                EqualsBuilder b = new EqualsBuilder();
153                b.append(getValue(), o.getValue());
154                return b.isEquals();
155        }
156
157        @Override
158        public boolean equalsShallow(Base obj) {
159                if (obj == null) {
160                        return false;
161                }
162                if (!(obj.getClass() == getClass())) {
163                        return false;
164                }
165
166                PrimitiveType<?> o = (PrimitiveType<?>) obj;
167
168                EqualsBuilder b = new EqualsBuilder();
169                b.append(getValue(), o.getValue());
170                return b.isEquals();
171        }
172
173
174}