Method: PropertiesReaderRessource()

1: package de.fhdw.wtf.persistence.utils;
2:
3: import java.util.Enumeration;
4: import java.util.HashMap;
5: import java.util.MissingResourceException;
6: import java.util.ResourceBundle;
7:
8: /**
9: * This PropertiesReader tries to read properties from a ressource file in a given directory. The content of the
10: * ressource file should be seperated by "key1=value1".
11: *
12: * @author HFW413hy
13: *
14: */
15: public class PropertiesReaderRessource implements PropertiesReader {
16:         
17:         /**
18:          * Stores the internal key-value-pairs.
19:          */
20:         private final HashMap<String, String> propValues = new HashMap<>();
21:         
22:         /**
23:          * Deletes the internal instance. You should initialize it again with the method "getInstance(String propFile)".
24:          */
25:         public void reset() {
26:                 this.propValues.clear();
27:         }
28:         
29:         @Override
30:         public void initialize(final String propFile) throws MissingResourceException {
31:                 this.reset();
32:                 final ResourceBundle rb = ResourceBundle.getBundle(propFile);
33:                 final Enumeration<String> keys = rb.getKeys();
34:                 while (keys.hasMoreElements()) {
35:                         final String key = keys.nextElement();
36:                         final String value = rb.getString(key);
37:                         this.propValues.put(key, value);
38:                 }
39:         }
40:         
41:         @Override
42:         public String getProperty(final String key) {
43:                 if (!this.propValues.containsKey(key)) {
44:                         return "";
45:                 }
46:                 return this.propValues.get(key);
47:         }
48: }