server/core/ConfigurationServant.java

//---PACKAGE DECLARATION---

//---IMPORTS---
import uk.ac.ukc.iscream.core.*;
import java.util.*;
import java.io.*;
import java.text.DateFormat;

/**
 * An implementation of the Configuration IDL
 * This class allows i-scream modules to read and even
 * set their configuration from a central location.
 *
 * When classes want their configuration, they contact
 * the Configurator, which will locate their config,
 * open it and pass it to a Configuration object which is
 * then passed back to the calling class.
 *
 * Essentially this class behaves in a similar fashion
 * to the java.util.Properties class.
 *
 * @author  $Author: tdb1 $
 * @version $Id: ConfigurationServant.java,v 1.9 2000/11/20 15:49:46 tdb1 Exp $
 */
class ConfigurationServant extends ConfigurationPOA {

//---FINAL ATTRIBUTES---

    /**
     * The current CVS revision of this class
     */
    public final String REVISION = "$Revision: 1.9 $";
    
//---STATIC METHODS---

//---CONSTRUCTORS---

    /**
     * Creates a new ConfigurationServant taking a hook
     * to a file containing the configuration.
     *
     * @param propertiesStream an InputStream connected to the configuration
     */
    ConfigurationServant(Properties properties, long lastModified, Logger logRef) {
        _properties = properties;
        _lastModified = lastModified;
        _logRef = logRef;
        _logRef.write(this.toString(), Logger.SYSINIT, "created");
        String date = DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.MEDIUM).format(new Date(getLastModified()));
        _logRef.write(this.toString(), Logger.SYSMSG, "last modified - " + date);
    }
 
//---PUBLIC METHODS---

    /**
     * A wrapper for java.util.Properties.getProperty
     * When given a key it returns the value of that key
     * ie, key = value
     *
     * @param key the key the value of which is wanted
     */
    public String getProperty(String key) {
        return _properties.getProperty(key); 
    }
    
    /**
     * Overrides the {@link java.lang.Object#toString() Object.toString()}
     * method to provide clean logging (every class should have this).
     *
     * @return the name of this class and its CVS revision
     */
    public String toString() {
        return this.getClass().getName() + "(" + REVISION.substring(11, REVISION.length() - 2) + ")";
    }

//---PRIVATE METHODS---

    protected void finalize() throws Throwable {
        _logRef.write(this.toString(), Logger.DEBUG, "finalized (ick, us english!)");
    }

//---ACCESSOR/MUTATOR METHODS---

    /**
     * Returns the date stamp of the configuration file
     * this object is using.
     *
     * @return the last modified time for the file
     */
    public long getLastModified() {
        return _lastModified;
    }

//---ATTRIBUTES---

    /**
     * The properties object that this class provides a CORBA interface to
     */
    private Properties _properties = new Properties();

    /**
     * Reference to a Logger
     */
    private Logger _logRef;

    /**
     * The date stamp of the configuration file
     * this object is using
     */
    private long _lastModified;
    
//---STATIC ATTRIBUTES---

}
Revision:	1.10
Committed:	Mon Nov 20 17:11:44 2000 UTC (23 years, 5 months ago) by ajm
Branch:	MAIN
Changes since 1.9:	+114 -123 lines
Log Message:	Modified to change the name of the Configurator -> ConfigurationManager Added initial work for multiple configurations
#	User	Rev	Content
1	ajm	1.10	//---PACKAGE DECLARATION---
2
3			//---IMPORTS---
4			import uk.ac.ukc.iscream.core.*;
5			import java.util.*;
6			import java.io.*;
7			import java.text.DateFormat;
8
9			/**
10			* An implementation of the Configuration IDL
11			* This class allows i-scream modules to read and even
12			* set their configuration from a central location.
13			*
14			* When classes want their configuration, they contact
15			* the Configurator, which will locate their config,
16			* open it and pass it to a Configuration object which is
17			* then passed back to the calling class.
18			*
19			* Essentially this class behaves in a similar fashion
20			* to the java.util.Properties class.
21			*
22			* @author $Author: tdb1 $
23			* @version $Id: ConfigurationServant.java,v 1.9 2000/11/20 15:49:46 tdb1 Exp $
24			*/
25			class ConfigurationServant extends ConfigurationPOA {
26
27			//---FINAL ATTRIBUTES---
28
29			/**
30			* The current CVS revision of this class
31			*/
32			public final String REVISION = "$Revision: 1.9 $";
33
34			//---STATIC METHODS---
35
36			//---CONSTRUCTORS---
37
38			/**
39			* Creates a new ConfigurationServant taking a hook
40			* to a file containing the configuration.
41			*
42			* @param propertiesStream an InputStream connected to the configuration
43			*/
44			ConfigurationServant(Properties properties, long lastModified, Logger logRef) {
45			_properties = properties;
46			_lastModified = lastModified;
47			_logRef = logRef;
48			_logRef.write(this.toString(), Logger.SYSINIT, "created");
49			String date = DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.MEDIUM).format(new Date(getLastModified()));
50			_logRef.write(this.toString(), Logger.SYSMSG, "last modified - " + date);
51			}
52
53			//---PUBLIC METHODS---
54
55			/**
56			* A wrapper for java.util.Properties.getProperty
57			* When given a key it returns the value of that key
58			* ie, key = value
59			*
60			* @param key the key the value of which is wanted
61			*/
62			public String getProperty(String key) {
63			return _properties.getProperty(key);
64			}
65
66			/**
67			* Overrides the {@link java.lang.Object#toString() Object.toString()}
68			* method to provide clean logging (every class should have this).
69			*
70			* @return the name of this class and its CVS revision
71			*/
72			public String toString() {
73			return this.getClass().getName() + "(" + REVISION.substring(11, REVISION.length() - 2) + ")";
74			}
75
76			//---PRIVATE METHODS---
77
78			protected void finalize() throws Throwable {
79			_logRef.write(this.toString(), Logger.DEBUG, "finalized (ick, us english!)");
80			}
81
82			//---ACCESSOR/MUTATOR METHODS---
83
84			/**
85			* Returns the date stamp of the configuration file
86			* this object is using.
87			*
88			* @return the last modified time for the file
89			*/
90			public long getLastModified() {
91			return _lastModified;
92			}
93
94			//---ATTRIBUTES---
95
96			/**
97			* The properties object that this class provides a CORBA interface to
98			*/
99			private Properties _properties = new Properties();
100
101			/**
102			* Reference to a Logger
103			*/
104			private Logger _logRef;
105
106			/**
107			* The date stamp of the configuration file
108			* this object is using
109			*/
110			private long _lastModified;
111
112			//---STATIC ATTRIBUTES---
113
114			}