Coverage Report - ca.uhn.hl7v2.validation.impl.ValidationContextFactory
 
Classes in this File Line Coverage Branch Coverage Complexity
ValidationContextFactory
15%
3/19
0%
0/4
1.857
 
 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 "ValidationContextFactory.java".  Description: 
 10  
 "Source 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 ca.uhn.hl7v2.HL7Exception;
 29  
 import ca.uhn.hl7v2.util.ReflectionUtil;
 30  
 import ca.uhn.hl7v2.validation.ValidationContext;
 31  
 import ca.uhn.hl7v2.validation.ValidationException;
 32  
 import ca.uhn.hl7v2.validation.builder.ValidationRuleBuilder;
 33  
 import ca.uhn.hl7v2.validation.builder.support.DefaultValidationBuilder;
 34  
 import ca.uhn.hl7v2.validation.builder.support.NoValidationBuilder;
 35  
 
 36  
 /**
 37  
  * <p>
 38  
  * The <code>ValidationContext</code> returned by <code>getContext()</code> is
 39  
  * determined by the system property "ca.uhn.hl7v2.validation.context_class".
 40  
  * This factory defines two inner classes that can be used: DefaultValidation
 41  
  * and NoValidation. You can also create your own context, setting whatever
 42  
  * rules you want in its constructor, and reference it instead (it must have a
 43  
  * zero-arg constructor). If this property is not set, DefaultValidation is
 44  
  * used.
 45  
  * </p>
 46  
  * 
 47  
  * <p>
 48  
  * Also note that the contexts provided here use
 49  
  * <code>ValidationContextImpl</code>, so rule bindings can be added or removed
 50  
  * programmatically from the starting set.
 51  
  * </p>
 52  
  * 
 53  
  * @author Bryan Tripp
 54  
  * @author Christian Ohr
 55  
  * 
 56  
  */
 57  0
 public class ValidationContextFactory {
 58  
 
 59  
     private static ValidationContext ourContext;
 60  
 
 61  
     public static final String CONTEXT_PROPERTY = "ca.uhn.hl7v2.validation.context_class";
 62  
 
 63  
     /**
 64  
      * Returns a singleton <code>ValidationContext</code>, creating it if
 65  
      * necessary.
 66  
      * 
 67  
      * @return <code>ValidationContext</code>
 68  
      */
 69  
     public synchronized static ValidationContext getContext() throws HL7Exception {
 70  0
         if (ourContext == null) {
 71  0
             String contextClassName = System.getProperty(CONTEXT_PROPERTY);
 72  0
             ourContext = contextClassName == null ? defaultValidation()
 73  
                     : customValidation(contextClassName);
 74  
         }
 75  0
         return ourContext;
 76  
     }
 77  
 
 78  
     /**
 79  
      * @return an instance of a non-validating context
 80  
      */
 81  
     @SuppressWarnings("unchecked")
 82  
         public static <T extends ValidationContext> T noValidation() {
 83  39
         return (T) new ValidationContextImpl(new NoValidationBuilder());
 84  
     }
 85  
 
 86  
     /**
 87  
      * @return an instance of a default validation context
 88  
      */
 89  
     @SuppressWarnings("unchecked")
 90  
         public static <T extends ValidationContext> T defaultValidation() {
 91  439
         return (T)new ValidationContextImpl(new DefaultValidationBuilder());
 92  
     }
 93  
 
 94  
     /**
 95  
      * @param ruleBuilderClassName class name of a {@link ValidationRuleBuilder}
 96  
      *            subclass
 97  
      * @return a validation rule builder instance
 98  
      * @throws HL7Exception if builder cannot be built
 99  
      */
 100  
     @SuppressWarnings("unchecked")
 101  
     public static ValidationRuleBuilder customBuilder(String ruleBuilderClassName)
 102  
             throws HL7Exception {
 103  
         Class<? extends ValidationRuleBuilder> c;
 104  
         try {
 105  0
             c = (Class<? extends ValidationRuleBuilder>) Class.forName(ruleBuilderClassName);
 106  0
         } catch (ClassNotFoundException e) {
 107  0
             throw new HL7Exception(e);
 108  0
         }
 109  0
         return ReflectionUtil.instantiate(c);
 110  
     }
 111  
 
 112  
     public static ValidationContext fromBuilder(String ruleBuilderClassName) throws HL7Exception {
 113  0
         return new ValidationContextImpl(customBuilder(ruleBuilderClassName));
 114  
     }
 115  
 
 116  
     public static ValidationContext fromBuilder(ValidationRuleBuilder builder) {
 117  19
         return new ValidationContextImpl(builder);
 118  
     }
 119  
 
 120  
     /**
 121  
      * @param contextClassName class name of a {@link ValidationContext}
 122  
      *            subclass
 123  
      * @return instance of the ValidationContext
 124  
      * @throws HL7Exception if context cannot be obtained
 125  
      */
 126  
     @SuppressWarnings("unchecked")
 127  
     public static ValidationContext customValidation(String contextClassName) throws HL7Exception {
 128  
         Class<? extends ValidationContext> c;
 129  
         try {
 130  0
             c = (Class<? extends ValidationContext>) Class.forName(contextClassName);
 131  0
         } catch (Exception e) {
 132  0
             throw new HL7Exception(e);
 133  0
         }
 134  0
         return ReflectionUtil.instantiate(c);
 135  
 
 136  
     }
 137  
 
 138  
 }