mirror of https://github.com/sipwise/jitsi.git
Symphorien Wanko
19 years ago
parent
c8893f592e
commit
51b37756b7
@ -1,230 +0,0 @@
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/*
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* SIP Communicator, the OpenSource Java VoIP and Instant Messaging client.
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*
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* Distributable under LGPL license.
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* See terms of license at gnu.org.
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*/
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package net.java.sip.communicator.impl.protocol.rss;
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import java.text.*;
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import java.util.*;
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/**
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* The <code>RssItemKey</code> is used to encapsulate information pertaining to
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* the last item retrieved from a RSS feed. It can be used with both feeds that
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* provide and that don't provide a date for their contents.
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*
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* @author Mihai Balan
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*/
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class RssItemKey
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implements Comparable
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{
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/***
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* Date of the last show post. If it cannot be used, it's null.
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*/
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private Date itemDate = null;
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/***
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* URI (link) of the last shown post. If it's not used, it's null.
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*/
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private String itemUri = null;
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/***
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* Flag to mark whether date is used to mark items (<code>true</code>) or
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* URI (<code>false</code>)
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*/
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private boolean usesDate = true;
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private static SimpleDateFormat formatter =
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new SimpleDateFormat("yyyy.MM.dd-HH:mm:ss");
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/***
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* Creates a RssContactSettings object that by default uses date to
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* identify feed items, with the last item date the current date/time.
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*/
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public RssItemKey()
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{
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itemDate = new Date();
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itemUri = null;
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usesDate = true;
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}
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/***
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* Creates a RssContactSettings object that uses date to identify feed
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* items, with the last item date specified by the <tt>lastPostDate</tt>
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* parameter.
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* @param itemDate date/time of the item
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*/
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public RssItemKey(Date itemDate)
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{
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this.itemDate = itemDate;
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this.itemUri = null;
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this.usesDate = true;
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}
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/***
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* Creates a RssContactSettings object that uses URI to identify feed
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* items, with the last item URI specified by the <tt>lastPostUri</tt>
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* @param itemUri URI/link of the item
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*/
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public RssItemKey(String itemUri)
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{
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this.itemUri = itemUri;
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this.itemDate = null;
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this.usesDate = false;
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}
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/**
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* Determines if the current key uses <code>Date</code> as a means of
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* identification or not. Usually if true is returned this also implies that
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* <code>getItemUri() == null</code> so this should be used with care.
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* Similarly, if <code>false</code> is returned, one should assume that
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* <code>getItemDate() == null</code>.
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*
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* @return <code>true</code> if date is used for identification,
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* <code>false</code> otherwise.
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* @see #getItemDate()
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* @see #getItemUri()
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*/
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public boolean usesDate()
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{
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return this.usesDate;
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}
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/**
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* Returns the date that is used as a key. Note that null can also be
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* returned in case <code>usesDate() == false</code>.
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*
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* @return date field of the key.
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* @see #usesDate()
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*/
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public Date getItemDate()
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{
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return this.itemDate;
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}
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/**
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* Returns the URI that is used as a key. Note that null can also be
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* returned in case <code>usesDate() == true</code>.
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*
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* @return URI field of the key.
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* @see #usesDate()
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*/
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public String getItemUri()
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{
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return this.itemUri;
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}
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/***
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* Used for restoring the key information from a textual representation.
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*
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* @param settings textual representation of the stored data
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*/
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public static RssItemKey deserialize(String settings)
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{
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StringTokenizer reader = new StringTokenizer(settings, ";");
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RssItemKey result = new RssItemKey();
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while (reader.hasMoreTokens())
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{
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String data[] = reader.nextToken().split("=");
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if (data[0].equals("itemDate"))
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{
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if (data.length == 2)
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{
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try
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{
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result.itemDate = formatter.parse(data[1]);
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}
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catch (ParseException e)
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{
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result.itemDate = null;
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//XXX: logger.error("Could not parse date: " + data[1]);
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}
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}
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else
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result.itemDate = null;
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}
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if (data[0].equals("itemUri"))
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{
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if (data.length == 2)
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result.itemUri = data[1];
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else
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result.itemUri = null;
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}
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if (data[0].equals("usesDate"))
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{
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if (data.length == 2)
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result.usesDate = Boolean.valueOf(data[1]).booleanValue();
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else
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result.usesDate = result.itemDate == null;
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}
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}
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if (result.itemDate == null && result.itemUri == null)
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return null;
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else
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return result;
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}
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/***
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* Returns the textual representation of the settings object. This can
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* be easily de-serialized with a call to <code>deserialize()</code>.
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*
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* @see #deserialize(String)
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*/
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public String toString()
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{
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StringBuffer result = new StringBuffer();
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result.append("itemDate=");
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result.append(itemDate == null ?
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"" : formatter.format(itemDate));
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result.append(";");
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result.append("itemUri=");
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result.append(itemUri == null ? "" : itemUri);
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result.append(";");
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result.append("usesDate=");
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result.append(usesDate);
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result.append(";");
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return result.toString();
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}
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/***
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* Serializes current key to a textual representation.
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*
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* @return String containing the textual representation of the current key.
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*/
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public String serialize()
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{
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return this.toString();
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}
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public int compareTo(Object o)
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{
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RssItemKey obj = (RssItemKey)o;
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if (obj == null)
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throw new ClassCastException("Can only compare item keys.");
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if (this.usesDate())
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{
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if (obj.usesDate())
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return this.itemDate.compareTo(obj.itemDate);
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else
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return 0;
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}
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else
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{
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if(obj.usesDate())
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return 0;
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else
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return this.itemUri.compareToIgnoreCase(obj.itemUri);
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}
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}
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}
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