📄 dataset.html
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<HTML><BODY BGCOLOR="white"><PRE><FONT color="green">001</FONT> /* ===========================================================<a name="line.1"></a><FONT color="green">002</FONT> * JFreeChart : a free chart library for the Java(tm) platform<a name="line.2"></a><FONT color="green">003</FONT> * ===========================================================<a name="line.3"></a><FONT color="green">004</FONT> *<a name="line.4"></a><FONT color="green">005</FONT> * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.<a name="line.5"></a><FONT color="green">006</FONT> *<a name="line.6"></a><FONT color="green">007</FONT> * Project Info: http://www.jfree.org/jfreechart/index.html<a name="line.7"></a><FONT color="green">008</FONT> *<a name="line.8"></a><FONT color="green">009</FONT> * This library is free software; you can redistribute it and/or modify it <a name="line.9"></a><FONT color="green">010</FONT> * under the terms of the GNU Lesser General Public License as published by <a name="line.10"></a><FONT color="green">011</FONT> * the Free Software Foundation; either version 2.1 of the License, or <a name="line.11"></a><FONT color="green">012</FONT> * (at your option) any later version.<a name="line.12"></a><FONT color="green">013</FONT> *<a name="line.13"></a><FONT color="green">014</FONT> * This library is distributed in the hope that it will be useful, but <a name="line.14"></a><FONT color="green">015</FONT> * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY <a name="line.15"></a><FONT color="green">016</FONT> * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public <a name="line.16"></a><FONT color="green">017</FONT> * License for more details.<a name="line.17"></a><FONT color="green">018</FONT> *<a name="line.18"></a><FONT color="green">019</FONT> * You should have received a copy of the GNU Lesser General Public<a name="line.19"></a><FONT color="green">020</FONT> * License along with this library; if not, write to the Free Software<a name="line.20"></a><FONT color="green">021</FONT> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, <a name="line.21"></a><FONT color="green">022</FONT> * USA. <a name="line.22"></a><FONT color="green">023</FONT> *<a name="line.23"></a><FONT color="green">024</FONT> * [Java is a trademark or registered trademark of Sun Microsystems, Inc. <a name="line.24"></a><FONT color="green">025</FONT> * in the United States and other countries.]<a name="line.25"></a><FONT color="green">026</FONT> *<a name="line.26"></a><FONT color="green">027</FONT> * ------------<a name="line.27"></a><FONT color="green">028</FONT> * Dataset.java<a name="line.28"></a><FONT color="green">029</FONT> * ------------<a name="line.29"></a><FONT color="green">030</FONT> * (C) Copyright 2000-2005, by Object Refinery Limited.<a name="line.30"></a><FONT color="green">031</FONT> *<a name="line.31"></a><FONT color="green">032</FONT> * Original Author: David Gilbert (for Object Refinery Limited);<a name="line.32"></a><FONT color="green">033</FONT> * Contributor(s): -;<a name="line.33"></a><FONT color="green">034</FONT> *<a name="line.34"></a><FONT color="green">035</FONT> * $Id: Dataset.java,v 1.3.2.1 2005/10/25 21:32:29 mungady Exp $<a name="line.35"></a><FONT color="green">036</FONT> *<a name="line.36"></a><FONT color="green">037</FONT> * Changes (from 18-Sep-2001)<a name="line.37"></a><FONT color="green">038</FONT> * --------------------------<a name="line.38"></a><FONT color="green">039</FONT> * 18-Sep-2001 : Added standard header and fixed DOS encoding problem (DG);<a name="line.39"></a><FONT color="green">040</FONT> * 15-Oct-2001 : Moved to a new package (com.jrefinery.data.*) (DG);<a name="line.40"></a><FONT color="green">041</FONT> * 22-Oct-2001 : Changed name to Dataset.java (DG);<a name="line.41"></a><FONT color="green">042</FONT> * 17-Nov-2001 : Added getLegendItemCount() and getLegendItemLabels() methods, <a name="line.42"></a><FONT color="green">043</FONT> * created SeriesDataset interface and transferred series related<a name="line.43"></a><FONT color="green">044</FONT> * methods out (DG);<a name="line.44"></a><FONT color="green">045</FONT> * 22-Jan-2002 : Reconsidered (and removed) the getLegendItemCount() and <a name="line.45"></a><FONT color="green">046</FONT> * getLegendItemLabels() methods...leave this to client code (DG);<a name="line.46"></a><FONT color="green">047</FONT> * 27-Sep-2002 : Added get/setDatasetGroup() methods (DG);<a name="line.47"></a><FONT color="green">048</FONT> * 10-Jan-2003 : Updated Javadocs (DG);<a name="line.48"></a><FONT color="green">049</FONT> *<a name="line.49"></a><FONT color="green">050</FONT> */<a name="line.50"></a><FONT color="green">051</FONT> <a name="line.51"></a><FONT color="green">052</FONT> package org.jfree.data.general;<a name="line.52"></a><FONT color="green">053</FONT> <a name="line.53"></a><FONT color="green">054</FONT> /**<a name="line.54"></a><FONT color="green">055</FONT> * The base interface for data sets.<a name="line.55"></a><FONT color="green">056</FONT> * <P><a name="line.56"></a><FONT color="green">057</FONT> * All datasets are required to support the {@link DatasetChangeEvent} <a name="line.57"></a><FONT color="green">058</FONT> * mechanism by allowing listeners to register and receive notification of any <a name="line.58"></a><FONT color="green">059</FONT> * changes to the dataset.<a name="line.59"></a><FONT color="green">060</FONT> * <P><a name="line.60"></a><FONT color="green">061</FONT> * In addition, all datasets must belong to one (and only one) <a name="line.61"></a><FONT color="green">062</FONT> * {@link DatasetGroup}. The group object maintains a reader-writer lock <a name="line.62"></a><FONT color="green">063</FONT> * which provides synchronised access to the datasets in multi-threaded code.<a name="line.63"></a><FONT color="green">064</FONT> */<a name="line.64"></a><FONT color="green">065</FONT> public interface Dataset {<a name="line.65"></a><FONT color="green">066</FONT> <a name="line.66"></a><FONT color="green">067</FONT> /**<a name="line.67"></a><FONT color="green">068</FONT> * Registers an object for notification of changes to the dataset.<a name="line.68"></a><FONT color="green">069</FONT> *<a name="line.69"></a><FONT color="green">070</FONT> * @param listener the object to register.<a name="line.70"></a><FONT color="green">071</FONT> */<a name="line.71"></a><FONT color="green">072</FONT> public void addChangeListener(DatasetChangeListener listener);<a name="line.72"></a><FONT color="green">073</FONT> <a name="line.73"></a><FONT color="green">074</FONT> /**<a name="line.74"></a><FONT color="green">075</FONT> * Deregisters an object for notification of changes to the dataset.<a name="line.75"></a><FONT color="green">076</FONT> *<a name="line.76"></a><FONT color="green">077</FONT> * @param listener the object to deregister.<a name="line.77"></a><FONT color="green">078</FONT> */<a name="line.78"></a><FONT color="green">079</FONT> public void removeChangeListener(DatasetChangeListener listener);<a name="line.79"></a><FONT color="green">080</FONT> <a name="line.80"></a><FONT color="green">081</FONT> /**<a name="line.81"></a><FONT color="green">082</FONT> * Returns the dataset group.<a name="line.82"></a><FONT color="green">083</FONT> *<a name="line.83"></a><FONT color="green">084</FONT> * @return The dataset group.<a name="line.84"></a><FONT color="green">085</FONT> */<a name="line.85"></a><FONT color="green">086</FONT> public DatasetGroup getGroup();<a name="line.86"></a><FONT color="green">087</FONT> <a name="line.87"></a><FONT color="green">088</FONT> /**<a name="line.88"></a><FONT color="green">089</FONT> * Sets the dataset group.<a name="line.89"></a><FONT color="green">090</FONT> *<a name="line.90"></a><FONT color="green">091</FONT> * @param group the dataset group.<a name="line.91"></a><FONT color="green">092</FONT> */<a name="line.92"></a><FONT color="green">093</FONT> public void setGroup(DatasetGroup group);<a name="line.93"></a><FONT color="green">094</FONT> <a name="line.94"></a><FONT color="green">095</FONT> }<a name="line.95"></a></PRE></BODY></HTML>⌨️ 快捷键说明
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