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1   /**
2   The contents of this file are subject to the Mozilla Public License Version 1.1 
3   (the "License"); you may not use this file except in compliance with the License. 
4   You may obtain a copy of the License at http://www.mozilla.org/MPL/ 
5   Software distributed under the License is distributed on an "AS IS" basis, 
6   WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the 
7   specific language governing rights and limitations under the License. 
8   
9   The Original Code is "ValidationContextImpl.java".  Description: 
10  "A default implementation of ValidationContext." 
11  
12  The Initial Developer of the Original Code is University Health Network. Copyright (C) 
13  2004.  All Rights Reserved. 
14  
15  Contributor(s): ______________________________________. 
16  
17  Alternatively, the contents of this file may be used under the terms of the 
18  GNU General Public License (the  �GPL�), in which case the provisions of the GPL are 
19  applicable instead of those above.  If you wish to allow use of your version of this 
20  file only under the terms of the GPL and not to allow others to use your version 
21  of this file under the MPL, indicate your decision by deleting  the provisions above 
22  and replace  them with the notice and other provisions required by the GPL License.  
23  If you do not delete the provisions above, a recipient may use your version of 
24  this file under either the MPL or the GPL. 
25   */
26  package ca.uhn.hl7v2.validation.impl;
27  
28  import java.io.Serializable;
29  import java.util.ArrayList;
30  import java.util.Collection;
31  import java.util.List;
32  
33  import ca.uhn.hl7v2.model.Primitive;
34  import ca.uhn.hl7v2.validation.EncodingRule;
35  import ca.uhn.hl7v2.validation.MessageRule;
36  import ca.uhn.hl7v2.validation.PrimitiveTypeRule;
37  import ca.uhn.hl7v2.validation.Rule;
38  import ca.uhn.hl7v2.validation.ValidationContext;
39  import ca.uhn.hl7v2.validation.builder.ValidationRuleBuilder;
40  
41  /**
42   * A default implementation of <code>ValidationContext</code>.
43   * 
44   * @author Bryan Tripp
45   * @author Christian Ohr
46   */
47  @SuppressWarnings("serial")
48  public class ValidationContextImpl implements ValidationContext, Serializable {
49  
50  	private List<RuleBinding<PrimitiveTypeRule>> myPrimitiveRuleBindings;
51  	private List<RuleBinding<MessageRule>> myMessageRuleBindings;
52  	private List<RuleBinding<EncodingRule>> myEncodingRuleBindings;
53  
54  	public ValidationContextImpl() {
55  		myPrimitiveRuleBindings = new ArrayList<RuleBinding<PrimitiveTypeRule>>();
56  		myMessageRuleBindings = new ArrayList<RuleBinding<MessageRule>>();
57  		myEncodingRuleBindings = new ArrayList<RuleBinding<EncodingRule>>();
58  	}
59  	
60  	ValidationContextImpl(ValidationRuleBuilder builder) {
61  		this();
62  		for (RuleBinding<? extends Rule<?>> ruleBinding : builder.initialize()) {
63  			if (ruleBinding instanceof MessageRuleBinding)
64  				myMessageRuleBindings.add((MessageRuleBinding)ruleBinding);
65  			else if (ruleBinding instanceof EncodingRuleBinding)
66  				myEncodingRuleBindings.add((EncodingRuleBinding)ruleBinding);
67  			else if (ruleBinding instanceof PrimitiveTypeRuleBinding)
68  				myPrimitiveRuleBindings.add((PrimitiveTypeRuleBinding)ruleBinding);
69  		}
70  	}
71  	
72  
73  	/**
74  	 * @see ValidationContext#getPrimitiveRules(String, String, Primitive)
75  	 * @param theType ignored
76  	 */
77  	public Collection<PrimitiveTypeRule> getPrimitiveRules(String theVersion, String theTypeName, Primitive theType) {
78  		return getRules(myPrimitiveRuleBindings, theVersion, theTypeName);
79  	}
80  
81  	/**
82  	 * @return a List of <code>RuleBinding</code>s for
83  	 *         <code>PrimitiveTypeRule</code>s.
84  	 */
85  	public List<RuleBinding<PrimitiveTypeRule>> getPrimitiveRuleBindings() {
86  		return myPrimitiveRuleBindings;
87  	}
88  		
89  
90  	/**
91  	 * @see ValidationContext#getMessageRules(java.lang.String, java.lang.String, java.lang.String)
92  	 */
93  	public Collection<MessageRule> getMessageRules(String theVersion, String theMessageType, String theTriggerEvent) {
94  		return getRules(myMessageRuleBindings, theVersion, theMessageType + "^" + theTriggerEvent);
95  	}
96  
97  	/**
98  	 * @return a List of <code>RuleBinding</code>s for <code>MessageRule</code>s.
99  	 */
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 }