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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"><head><meta http-equiv="content-type" content="text/html; charset=UTF-8" /><title>DefaultFileRegion xref</title><link type="text/css" rel="stylesheet" href="../../../../stylesheet.css" /></head><body><div id="overview"><a href="../../../../../apidocs/org/apache/mina/common/DefaultFileRegion.html">View Javadoc</a></div><pre><a name="1" href="#1">1</a> <strong class="jxr_keyword">package</strong> org.apache.mina.common;<a name="2" href="#2">2</a> <a name="3" href="#3">3</a> <strong class="jxr_keyword">import</strong> java.nio.channels.FileChannel;<a name="4" href="#4">4</a> <a name="5" href="#5">5</a> <a name="6" href="#6">6</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/apache/mina/common/DefaultFileRegion.html">DefaultFileRegion</a> implements <a href="../../../../org/apache/mina/common/FileRegion.html">FileRegion</a> {<a name="7" href="#7">7</a> <a name="8" href="#8">8</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> FileChannel channel;<a name="9" href="#9">9</a> <a name="10" href="#10">10</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">long</strong> originalPosition;<a name="11" href="#11">11</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">long</strong> position;<a name="12" href="#12">12</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">long</strong> count;<a name="13" href="#13">13</a> <a name="14" href="#14">14</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/mina/common/DefaultFileRegion.html">DefaultFileRegion</a>(FileChannel channel, <strong class="jxr_keyword">long</strong> position, <strong class="jxr_keyword">long</strong> count) {<a name="15" href="#15">15</a> <strong class="jxr_keyword">if</strong> (channel == <strong class="jxr_keyword">null</strong>) {<a name="16" href="#16">16</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"channel can not be null"</span>);<a name="17" href="#17">17</a> }<a name="18" href="#18">18</a> <strong class="jxr_keyword">if</strong> (position < 0) {<a name="19" href="#19">19</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"position may not be less than 0"</span>);<a name="20" href="#20">20</a> }<a name="21" href="#21">21</a> <strong class="jxr_keyword">if</strong> (count < 0) {<a name="22" href="#22">22</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"count may not be less than 0"</span>);<a name="23" href="#23">23</a> }<a name="24" href="#24">24</a> <strong class="jxr_keyword">this</strong>.channel = channel;<a name="25" href="#25">25</a> <strong class="jxr_keyword">this</strong>.originalPosition = position;<a name="26" href="#26">26</a> <strong class="jxr_keyword">this</strong>.position = position;<a name="27" href="#27">27</a> <strong class="jxr_keyword">this</strong>.count = count;<a name="28" href="#28">28</a> }<a name="29" href="#29">29</a> <a name="30" href="#30">30</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> getWrittenBytes() {<a name="31" href="#31">31</a> <strong class="jxr_keyword">return</strong> position - originalPosition;<a name="32" href="#32">32</a> }<a name="33" href="#33">33</a> <a name="34" href="#34">34</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> getCount() {<a name="35" href="#35">35</a> <strong class="jxr_keyword">return</strong> count;<a name="36" href="#36">36</a> }<a name="37" href="#37">37</a> <a name="38" href="#38">38</a> <strong class="jxr_keyword">public</strong> FileChannel getFileChannel() {<a name="39" href="#39">39</a> <strong class="jxr_keyword">return</strong> channel;<a name="40" href="#40">40</a> }<a name="41" href="#41">41</a> <a name="42" href="#42">42</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> getPosition() {<a name="43" href="#43">43</a> <strong class="jxr_keyword">return</strong> position;<a name="44" href="#44">44</a> }<a name="45" href="#45">45</a> <a name="46" href="#46">46</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setPosition(<strong class="jxr_keyword">long</strong> value) {<a name="47" href="#47">47</a> <strong class="jxr_keyword">if</strong> (value < position) {<a name="48" href="#48">48</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"New position value may not be less than old position value"</span>);<a name="49" href="#49">49</a> }<a name="50" href="#50">50</a> count -= value - position;<a name="51" href="#51">51</a> position = value;<a name="52" href="#52">52</a> }<a name="53" href="#53">53</a> <a name="54" href="#54">54</a> }</pre><hr/><div id="footer">This page was automatically generated by <a href="http://maven.apache.org/">Maven</a></div></body></html>⌨️ 快捷键说明
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