sinkhandler.html

用JAVA编写的,在做实验的时候留下来的,本来想删的,但是传上来,大家分享吧

<a name="98" href="#98">98</a>      
<a name="99" href="#99">99</a>      <em>/**<em>*</em></em>
<a name="100" href="#100">100</a> <em>     * @return all SinkHandlerLogRecords.</em>
<a name="101" href="#101">101</a> <em>     */</em>
<a name="102" href="#102">102</a>     <strong>public</strong> Vector getAll() {
<a name="103" href="#103">103</a>         <strong>return</strong> <strong>this</strong>.sink;
<a name="104" href="#104">104</a>     }
<a name="105" href="#105">105</a>     
<a name="106" href="#106">106</a>     <em>/**<em>*</em></em>
<a name="107" href="#107">107</a> <em>     * @return Return all unread SinkHandlerLogRecords or null if none unread</em>
<a name="108" href="#108">108</a> <em>     */</em>
<a name="109" href="#109">109</a>     <strong>public</strong> Vector getAllUnread() {
<a name="110" href="#110">110</a>         <strong>if</strong> (<strong>this</strong>.sink == <strong>null</strong>) {
<a name="111" href="#111">111</a>             <strong>return</strong> <strong>null</strong>;
<a name="112" href="#112">112</a>         }
<a name="113" href="#113">113</a>         Vector <strong>new</strong>LogRecords = <strong>new</strong> Vector();
<a name="114" href="#114">114</a>         <strong>for</strong> (<strong>final</strong> Iterator i = <strong>this</strong>.sink.iterator(); i.hasNext();) {
<a name="115" href="#115">115</a>             <a href="../../../org/archive/io/SinkHandlerLogRecord.html">SinkHandlerLogRecord</a> lr = (SinkHandlerLogRecord) i.next();
<a name="116" href="#116">116</a>             <strong>if</strong> (!lr.isRead()) {
<a name="117" href="#117">117</a>                 newLogRecords.add(lr);
<a name="118" href="#118">118</a>             }
<a name="119" href="#119">119</a>         }
<a name="120" href="#120">120</a>         <strong>return</strong> (newLogRecords.size() == 0) ? <strong>null</strong> : newLogRecords;
<a name="121" href="#121">121</a>     }
<a name="122" href="#122">122</a>     
<a name="123" href="#123">123</a>     <em>/**<em>*</em></em>
<a name="124" href="#124">124</a> <em>     * @return Count of all records.</em>
<a name="125" href="#125">125</a> <em>     */</em>
<a name="126" href="#126">126</a>     <strong>public</strong> <strong>int</strong> getCount() {
<a name="127" href="#127">127</a>         <strong>return</strong> <strong>this</strong>.sink != <strong>null</strong>? <strong>this</strong>.sink.size(): 0;
<a name="128" href="#128">128</a>     }
<a name="129" href="#129">129</a>     
<a name="130" href="#130">130</a>     <em>/**<em>*</em></em>
<a name="131" href="#131">131</a> <em>     * @return The count of unread log records.</em>
<a name="132" href="#132">132</a> <em>     */</em>
<a name="133" href="#133">133</a>     <strong>public</strong> <strong>int</strong> getUnreadCount() {
<a name="134" href="#134">134</a>         <strong>if</strong> (<strong>this</strong>.sink == <strong>null</strong>) {
<a name="135" href="#135">135</a>             <strong>return</strong> 0;
<a name="136" href="#136">136</a>         }
<a name="137" href="#137">137</a>         <strong>int</strong> n = 0;
<a name="138" href="#138">138</a>         <strong>for</strong> (<strong>final</strong> Iterator i = <strong>this</strong>.sink.iterator(); i.hasNext();) {
<a name="139" href="#139">139</a>             <a href="../../../org/archive/io/SinkHandlerLogRecord.html">SinkHandlerLogRecord</a> lr = (SinkHandlerLogRecord)i.next();
<a name="140" href="#140">140</a>             <strong>if</strong> (!lr.isRead()) {
<a name="141" href="#141">141</a>                 n++;
<a name="142" href="#142">142</a>             }
<a name="143" href="#143">143</a>         }
<a name="144" href="#144">144</a>         <strong>return</strong> n;
<a name="145" href="#145">145</a>     }
<a name="146" href="#146">146</a> 
<a name="147" href="#147">147</a>     <em>/**<em>*</em></em>
<a name="148" href="#148">148</a> <em>     * @param id The &lt;code>sequenceNumber&lt;/code> ID of the log record to find.</em>
<a name="149" href="#149">149</a> <em>     * @return A SinkHandlerLogRecord of the given ID or null if not found.</em>
<a name="150" href="#150">150</a> <em>     */</em>
<a name="151" href="#151">151</a>     <strong>public</strong> <a href="../../../org/archive/io/SinkHandlerLogRecord.html">SinkHandlerLogRecord</a> get(<strong>long</strong> id) {
<a name="152" href="#152">152</a>         <strong>if</strong> (<strong>this</strong>.sink == <strong>null</strong>) {
<a name="153" href="#153">153</a>             <strong>return</strong> <strong>null</strong>;
<a name="154" href="#154">154</a>         }
<a name="155" href="#155">155</a>         <strong>for</strong> (<strong>final</strong> Iterator i = <strong>this</strong>.sink.iterator(); i.hasNext();) {
<a name="156" href="#156">156</a>             <a href="../../../org/archive/io/SinkHandlerLogRecord.html">SinkHandlerLogRecord</a> lr = (SinkHandlerLogRecord)i.next();
<a name="157" href="#157">157</a>             <strong>if</strong> (lr.getSequenceNumber() == id) {
<a name="158" href="#158">158</a>                 <strong>return</strong> lr;
<a name="159" href="#159">159</a>             }
<a name="160" href="#160">160</a>         }
<a name="161" href="#161">161</a>         <strong>return</strong> <strong>null</strong>;
<a name="162" href="#162">162</a>     }
<a name="163" href="#163">163</a> 
<a name="164" href="#164">164</a>     <em>/**<em>*</em></em>
<a name="165" href="#165">165</a> <em>     * @param id The &lt;code>sequenceNumber&lt;/code> ID of the log record to find.</em>
<a name="166" href="#166">166</a> <em>     * @return The removed SinkHandlerLogRecord or null if none removed.</em>
<a name="167" href="#167">167</a> <em>     */</em>
<a name="168" href="#168">168</a>     <strong>public</strong> <a href="../../../org/archive/io/SinkHandlerLogRecord.html">SinkHandlerLogRecord</a> remove(<strong>final</strong> <strong>long</strong> id) {
<a name="169" href="#169">169</a>         <a href="../../../org/archive/io/SinkHandlerLogRecord.html">SinkHandlerLogRecord</a> shlr = <strong>null</strong>;
<a name="170" href="#170">170</a>         <strong>if</strong> (<strong>this</strong>.sink == <strong>null</strong>) {
<a name="171" href="#171">171</a>             <strong>return</strong>  shlr;
<a name="172" href="#172">172</a>         }
<a name="173" href="#173">173</a>         <strong>for</strong> (<strong>final</strong> Iterator i = <strong>this</strong>.sink.iterator(); i.hasNext();) {
<a name="174" href="#174">174</a>             <a href="../../../org/archive/io/SinkHandlerLogRecord.html">SinkHandlerLogRecord</a> lr = (SinkHandlerLogRecord)i.next();
<a name="175" href="#175">175</a>             <strong>if</strong> (lr.getSequenceNumber() == id) {
<a name="176" href="#176">176</a>                 i.remove();
<a name="177" href="#177">177</a>                 shlr = lr;
<a name="178" href="#178">178</a>                 <strong>break</strong>;
<a name="179" href="#179">179</a>             }
<a name="180" href="#180">180</a>         }
<a name="181" href="#181">181</a>         <strong>return</strong> shlr;
<a name="182" href="#182">182</a>     }
<a name="183" href="#183">183</a> 
<a name="184" href="#184">184</a>     <em>/**<em>*</em></em>
<a name="185" href="#185">185</a> <em>     * @param id The &lt;code>sequenceNumber&lt;/code> ID of the log record to find</em>
<a name="186" href="#186">186</a> <em>     * and mark as read.</em>
<a name="187" href="#187">187</a> <em>     */</em>
<a name="188" href="#188">188</a>     <strong>public</strong> <strong>void</strong> read(<strong>final</strong> <strong>long</strong> id) {
<a name="189" href="#189">189</a>         <strong>for</strong> (<strong>final</strong> Iterator i = <strong>this</strong>.sink.iterator(); i.hasNext();) {
<a name="190" href="#190">190</a>             <a href="../../../org/archive/io/SinkHandlerLogRecord.html">SinkHandlerLogRecord</a> lr = (SinkHandlerLogRecord)i.next();
<a name="191" href="#191">191</a>             <strong>if</strong> (lr.getSequenceNumber() == id) {
<a name="192" href="#192">192</a>                 lr.setRead();
<a name="193" href="#193">193</a>                 <strong>break</strong>;
<a name="194" href="#194">194</a>             }
<a name="195" href="#195">195</a>         }
<a name="196" href="#196">196</a>     }
<a name="197" href="#197">197</a> }
</pre>
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