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1
57
58 package org.apache.commons.discovery.resource.names;
59
60 import java.util.HashMap  ;
61
62 import org.apache.commons.discovery.ResourceNameDiscover;
63 import org.apache.commons.discovery.ResourceNameIterator;
64 import org.apache.commons.discovery.log.DiscoveryLogFactory;
65 import org.apache.commons.discovery.tools.ManagedProperties;
66 import org.apache.commons.logging.Log;
67
68
69
81 public class DiscoverNamesInAlternateManagedProperties
82 extends ResourceNameDiscoverImpl
83 implements ResourceNameDiscover
84 {
85 private static Log log = DiscoveryLogFactory.newLog(DiscoverNamesInAlternateManagedProperties.class);
86 public static void setLog(Log _log) {
87 log = _log;
88 }
89
90 HashMap mapping = new HashMap ();
91
92
94 public DiscoverNamesInAlternateManagedProperties() {
95 }
96
97
99 public void addClassToPropertyNameMapping(String className, String propertyName) {
100 mapping.put(className, propertyName);
101 }
102
103
106 public ResourceNameIterator findResourceNames(final String resourceName) {
107 final String mappedName = (String )mapping.get(resourceName);
108
109 if (log.isDebugEnabled()) {
110 if (mappedName == null) {
111 log.debug("find: resourceName='" + resourceName + "', no mapping");
112 } else {
113 log.debug("find: resourceName='" + resourceName + "', lookup property '" + mappedName + "'");
114 }
115 }
116
117 return new ResourceNameIterator() {
118 private String resource =
119 (mappedName == null) ? null : ManagedProperties.getProperty(mappedName);
120
121 public boolean hasNext() {
122 return resource != null;
123 }
124
125 public String nextResourceName() {
126 String element = resource;
127 resource = null;
128 return element;
129 }
130 };
131 }
132 }
133 |
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