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1   /*
2    * Created on 19-Apr-2004
3    */
4   package ca.uhn.hl7v2.protocol.impl;
5   
6   import java.util.ArrayList;
7   import java.util.List;
8   
9   import ca.uhn.hl7v2.protocol.AcceptValidator;
10  import ca.uhn.hl7v2.protocol.ApplicationRouter;
11  import ca.uhn.hl7v2.protocol.ProcessorContext;
12  import ca.uhn.hl7v2.protocol.SafeStorage;
13  import ca.uhn.hl7v2.protocol.TransportLayer;
14  
15  /**
16   * Default implementation of <code>ProcessorContext</code>. 
17   * 
18   * @author <a href="mailto:bryan.tripp@uhn.on.ca">Bryan Tripp</a>
19   * @version $Revision: 1.1 $ updated on $Date: 2007-02-19 02:24:26 $ by $Author: jamesagnew $
20   */
21  public class ProcessorContextImpl implements ProcessorContext {
22  
23      private final ApplicationRouter myRouter;
24      private final TransportLayer myLocallyDrivenTransport;
25      private final TransportLayer myRemotelyDrivenTransport;
26      private final SafeStorage mySafeStorage;
27      private final List<AcceptValidator> myValidators;
28      private final List<String> myMetadataFields;
29  
30      /**
31       * Creates a new instance that uses the given resources.  
32       * 
33       * @param theRouter 
34       * @param theTransport a <code>TransportLayer</code> used for both locally-initiated
35       *      and remotely-initiated message exchanges 
36       * @param theStorage
37       */    
38      public ProcessorContextImpl(
39              ApplicationRouter theRouter,
40              TransportLayer theTransport, 
41              SafeStorage theStorage) {
42                  
43          myRouter = theRouter;
44          myRemotelyDrivenTransport = theTransport;
45          myLocallyDrivenTransport = theTransport;
46          mySafeStorage = theStorage;
47          
48          myValidators = new ArrayList<AcceptValidator>(8);
49          myMetadataFields = new ArrayList<String>(30);
50      }
51  
52      /**
53       * Creates a new instance that uses the given resources.  
54       * 
55       * @param theRouter 
56       * @param theLocallyDrivenTransport a <code>TransportLayer</code> used for locally-initiated
57       *      and message exchanges 
58       * @param theRemotelyDrivenTransport a <code>TransportLayer</code> used for remotely-initiated
59       *      and message exchanges 
60       * @param theStorage
61       */    
62      public ProcessorContextImpl(
63              ApplicationRouter theRouter,
64              TransportLayer theLocallyDrivenTransport,
65              TransportLayer theRemotelyDrivenTransport,  
66              SafeStorage theStorage) {
67                  
68          myRouter = theRouter;
69          myRemotelyDrivenTransport = theRemotelyDrivenTransport;
70          myLocallyDrivenTransport = theLocallyDrivenTransport;
71          mySafeStorage = theStorage;
72          
73          myValidators = new ArrayList<AcceptValidator>(8);
74          myMetadataFields = new ArrayList<String>(30);
75      }
76  
77      /**
78       * @see ca.uhn.hl7v2.protocol.ProcessorContext#getRouter()
79       */
80      public ApplicationRouter getRouter() {
81          return myRouter;
82      }
83  
84      /**
85       * @see ca.uhn.hl7v2.protocol.ProcessorContext#getRemotelyDrivenTransportLayer()
86       */
87      public TransportLayer getRemotelyDrivenTransportLayer() {
88          return myRemotelyDrivenTransport;
89      }
90  
91      /**
92       * @see ca.uhn.hl7v2.protocol.ProcessorContext#getLocallyDrivenTransportLayer()
93       */
94      public TransportLayer getLocallyDrivenTransportLayer() {
95          return myLocallyDrivenTransport;
96      }
97  
98      /**
99       * @see ca.uhn.hl7v2.protocol.ProcessorContext#getValidators()
100      */
101     public AcceptValidator[] getValidators() {
102         return myValidators.toArray(new AcceptValidator[0]);
103     }
104     
105     /**
106      * Adds a new validator to the list of those returned by 
107      * <code>getValidators()</code>.  
108      *  
109      * @param theValidator the validator to add 
110      */
111     public void addValidator(AcceptValidator theValidator) {
112         myValidators.add(theValidator);
113     }
114 
115     /**
116      * @see ca.uhn.hl7v2.protocol.ProcessorContext#getSafeStorage()
117      */
118     public SafeStorage getSafeStorage() {
119         return mySafeStorage;
120     }
121 
122     /** 
123      * @see ca.uhn.hl7v2.protocol.ProcessorContext#getMetadataFields()
124      */
125     public List<String> getMetadataFields() {
126         return myMetadataFields;
127     }
128 
129 }