001/**
002The contents of this file are subject to the Mozilla Public License Version 1.1 
003(the "License"); you may not use this file except in compliance with the License. 
004You may obtain a copy of the License at http://www.mozilla.org/MPL/ 
005Software distributed under the License is distributed on an "AS IS" basis, 
006WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the 
007specific language governing rights and limitations under the License. 
008
009The Original Code is "ValidationContextImpl.java".  Description: 
010"A default implementation of ValidationContext." 
011
012The Initial Developer of the Original Code is University Health Network. Copyright (C) 
0132004.  All Rights Reserved. 
014
015Contributor(s): ______________________________________. 
016
017Alternatively, the contents of this file may be used under the terms of the 
018GNU General Public License (the  ?GPL?), in which case the provisions of the GPL are 
019applicable instead of those above.  If you wish to allow use of your version of this 
020file only under the terms of the GPL and not to allow others to use your version 
021of this file under the MPL, indicate your decision by deleting  the provisions above 
022and replace  them with the notice and other provisions required by the GPL License.  
023If you do not delete the provisions above, a recipient may use your version of 
024this file under either the MPL or the GPL. 
025 */
026package ca.uhn.hl7v2.validation.impl;
027
028import java.io.Serializable;
029import java.util.ArrayList;
030import java.util.Collection;
031import java.util.List;
032
033import ca.uhn.hl7v2.model.Primitive;
034import ca.uhn.hl7v2.validation.EncodingRule;
035import ca.uhn.hl7v2.validation.MessageRule;
036import ca.uhn.hl7v2.validation.PrimitiveTypeRule;
037import ca.uhn.hl7v2.validation.Rule;
038import ca.uhn.hl7v2.validation.ValidationContext;
039import ca.uhn.hl7v2.validation.builder.ValidationRuleBuilder;
040
041/**
042 * A default implementation of <code>ValidationContext</code>.
043 * 
044 * @author Bryan Tripp
045 * @author Christian Ohr
046 */
047@SuppressWarnings("serial")
048public class ValidationContextImpl implements ValidationContext, Serializable {
049
050        private List<RuleBinding<PrimitiveTypeRule>> myPrimitiveRuleBindings;
051        private List<RuleBinding<MessageRule>> myMessageRuleBindings;
052        private List<RuleBinding<EncodingRule>> myEncodingRuleBindings;
053
054        public ValidationContextImpl() {
055                myPrimitiveRuleBindings = new ArrayList<RuleBinding<PrimitiveTypeRule>>();
056                myMessageRuleBindings = new ArrayList<RuleBinding<MessageRule>>();
057                myEncodingRuleBindings = new ArrayList<RuleBinding<EncodingRule>>();
058        }
059        
060        ValidationContextImpl(ValidationRuleBuilder builder) {
061                this();
062                for (RuleBinding<? extends Rule<?>> ruleBinding : builder.initialize()) {
063                        if (ruleBinding instanceof MessageRuleBinding)
064                                myMessageRuleBindings.add((MessageRuleBinding)ruleBinding);
065                        else if (ruleBinding instanceof EncodingRuleBinding)
066                                myEncodingRuleBindings.add((EncodingRuleBinding)ruleBinding);
067                        else if (ruleBinding instanceof PrimitiveTypeRuleBinding)
068                                myPrimitiveRuleBindings.add((PrimitiveTypeRuleBinding)ruleBinding);
069                }
070        }
071        
072
073        /**
074         * @see ValidationContext#getPrimitiveRules(String, String, Primitive)
075         * @param theType ignored
076         */
077        public Collection<PrimitiveTypeRule> getPrimitiveRules(String theVersion, String theTypeName, Primitive theType) {
078                return getRules(myPrimitiveRuleBindings, theVersion, theTypeName);
079        }
080
081        /**
082         * @return a List of <code>RuleBinding</code>s for
083         *         <code>PrimitiveTypeRule</code>s.
084         */
085        public List<RuleBinding<PrimitiveTypeRule>> getPrimitiveRuleBindings() {
086                return myPrimitiveRuleBindings;
087        }
088                
089
090        /**
091         * @see ValidationContext#getMessageRules(java.lang.String, java.lang.String, java.lang.String)
092         */
093        public Collection<MessageRule> getMessageRules(String theVersion, String theMessageType, String theTriggerEvent) {
094                return getRules(myMessageRuleBindings, theVersion, theMessageType + "^" + theTriggerEvent);
095        }
096
097        /**
098         * @return a List of <code>RuleBinding</code>s for <code>MessageRule</code>s.
099         */
100        public List<RuleBinding<MessageRule>> getMessageRuleBindings() {
101                return myMessageRuleBindings;
102        }
103
104        /**
105         * @see ca.uhn.hl7v2.validation.ValidationContext#getEncodingRules(java.lang.String,
106         *      java.lang.String)
107         */
108        public Collection<EncodingRule> getEncodingRules(String theVersion, String theEncoding) {
109                return getRules(myEncodingRuleBindings, theVersion, theEncoding);
110        }
111
112        /**
113         * @return a List of <code>RuleBinding</code>s for <code>EncodingRule</code>s.
114         */
115        public List<RuleBinding<EncodingRule>> getEncodingRuleBindings() {
116                return myEncodingRuleBindings;
117        }
118        
119        private <T extends Rule<?>> Collection<T> getRules(List<RuleBinding<T>> bindings, String version, String scope) {
120                List<T> active = new ArrayList<T>(bindings.size());
121                for (RuleBinding<T> binding : bindings) {
122                        if (applies(binding, version, scope))
123                                active.add(binding.getRule());
124                }
125                return active;
126        }
127
128        private boolean applies(RuleBinding<?> binding, String version, String scope) {
129                return (binding.getActive() && binding.appliesToVersion(version) && binding.appliesToScope(scope));
130        }
131
132
133}