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//---PACKAGE DECLARATION--- |
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|
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//---IMPORTS--- |
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import uk.ac.ukc.iscream.core.*; |
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import java.util.*; |
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import java.io.*; |
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|
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/** |
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* An implementation of the Configuration IDL |
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* This class allows i-scream modules to read and even |
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* set their configuration from a central location. |
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* |
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* When classes want their configuration, they contact |
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* the Configurator, which will locate their config, |
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* open it and pass it to a Configuration object which is |
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* then passed back to the calling class. |
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* |
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* Essentially this class behaves in a similar fashion |
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* to the java.util.Properties class. |
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* |
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* @author $Author: tdb1 $ |
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* @version $Id: ConfigurationServant.java,v 1.4 2000/11/13 16:36:03 tdb1 Exp $ |
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*/ |
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class ConfigurationServant extends ConfigurationPOA { |
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|
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//---FINAL ATTRIBUTES--- |
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|
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/** |
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* The current CVS revision of this class |
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*/ |
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public final String REVISION = "$Revision: 1.4 $"; |
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|
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//---STATIC METHODS--- |
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|
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//---CONSTRUCTORS--- |
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|
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/** |
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* Creates a new ConfigurationServant taking a hook |
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* to a file containing the configuration. |
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* |
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* @param propertiesStream an InputStream connected to the configuration |
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*/ |
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ConfigurationServant(File configurationFile, Logger logRef) { |
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_lastModified = configurationFile.lastModified(); |
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|
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_logRef = logRef; |
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_logRef.write(this.toString(), "created - last modified:" + getLastModified()); |
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|
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try { |
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InputStream configurationStream = new FileInputStream(configurationFile); |
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_properties.load(configurationStream); |
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} catch (Exception e) { |
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// **************************************** |
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// either IOException from the .load() or |
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// a SecurityException or FileNotFoundException from |
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// the inputStream, not sure what to do yet!!! |
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} |
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} |
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|
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//---PUBLIC METHODS--- |
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|
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/** |
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* A wrapper for java.util.Properties.getProperty |
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* When given a key it returns the value of that key |
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* ie, key = value |
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* |
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* @param key the key the value of which is wanted |
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*/ |
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public String getProperty(String key) { |
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return _properties.getProperty(key); |
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} |
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|
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/** |
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* Overrides the {@link java.lang.Object#toString() Object.toString()} |
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* method to provide clean logging (every class should have this). |
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* |
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* @return the name of this class and its CVS revision |
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*/ |
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public String toString() { |
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return this.getClass().getName() + ":" + REVISION; |
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} |
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|
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//---PRIVATE METHODS--- |
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|
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//---ACCESSOR/MUTATOR METHODS--- |
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|
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/** |
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* Returns the date stamp of the configuration file |
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* this object is using. |
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* |
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* @return the last modified time for the file |
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*/ |
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public long getLastModified() { |
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return _lastModified; |
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} |
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|
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//---ATTRIBUTES--- |
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|
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/** |
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* The properties object that this class provides a CORBA interface to |
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*/ |
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private Properties _properties = new Properties(); |
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|
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/** |
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* Reference to a Logger |
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*/ |
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private Logger _logRef; |
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|
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/** |
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* The date stamp of the configuration file |
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* this object is using |
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*/ |
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private long _lastModified; |
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|
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//---STATIC ATTRIBUTES--- |
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|
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} |
