ResourceLocator


1   /*
2   
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7    Copyright (C) 1999-2003 The Apache Software Foundation. All rights reserved.
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13      this list of conditions and the following disclaimer.
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16      this list of conditions and the following disclaimer in the documentation
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25   4. The names "Jakarta", "Avalon", "Excalibur" and "Apache Software Foundation"
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49  */
50  package org.apache.avalon.meta.info.locator;
51  
52  import java.io.InputStream  ;
53  import java.io.OutputStream  ;
54  import java.io.IOException  ;
55  
56  import org.apache.avalon.meta.info.Type;
57  
58  /**
59   * ResourceLocator provides an interface for the readers and writers to
60   * get i9nput and output streams relative to a type.
61   *
62   * @author <a HREF="bloritsch.at.apache.org">Berin Loritsch</a>
63   * @version CVS $Revision: 1.2 $
64   */
65  public interface ResourceLocator
66  {
67  
68      /**
69       * Get the required stream based on type and resource identifier.  
70       *
71       * @param type  The type defintion
72       * @param key  The resource identifier
73       * @return the input stream
74       * @throws MetaInfoException if the stream does not exist or there is a problem obtaining it.
75       */
76      InputStream   getInputStream( Type type, String   key ) throws IOException  ;
77  
78      /**
79       * Get the required stream based on type and resource identifier. 
80       *
81       * @param type  The type defintion
82       * @param key  The resource identifier
83       * @return the output stream
84       * @throws MetaInfoException if there is a problem obtaining it.
85       */
86      OutputStream   getOutputStream( Type type, String   key ) throws IOException  ;
87  }
88
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