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| <pre><span class="sourceLineNo">001</span>/*-<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Copyright 2015, 2016 Diamond Light Source Ltd.<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> *<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * All rights reserved. This program and the accompanying materials<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * are made available under the terms of the Eclipse Public License v1.0<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * which accompanies this distribution, and is available at<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * http://www.eclipse.org/legal/epl-v10.html<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> */<a name="line.8"></a> |
| <span class="sourceLineNo">009</span><a name="line.9"></a> |
| <span class="sourceLineNo">010</span>package org.eclipse.january.dataset;<a name="line.10"></a> |
| <span class="sourceLineNo">011</span><a name="line.11"></a> |
| <span class="sourceLineNo">012</span>import java.util.Arrays;<a name="line.12"></a> |
| <span class="sourceLineNo">013</span><a name="line.13"></a> |
| <span class="sourceLineNo">014</span>import org.eclipse.january.io.ILazyDynamicLoader;<a name="line.14"></a> |
| <span class="sourceLineNo">015</span>import org.eclipse.january.io.ILazyLoader;<a name="line.15"></a> |
| <span class="sourceLineNo">016</span><a name="line.16"></a> |
| <span class="sourceLineNo">017</span>public class LazyDynamicDataset extends LazyDataset implements IDynamicDataset {<a name="line.17"></a> |
| <span class="sourceLineNo">018</span> private static final long serialVersionUID = -6296506563932840938L;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span> protected int[] maxShape;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span><a name="line.21"></a> |
| <span class="sourceLineNo">022</span> protected transient DataListenerDelegate eventDelegate; // this does not need to be serialised!<a name="line.22"></a> |
| <span class="sourceLineNo">023</span><a name="line.23"></a> |
| <span class="sourceLineNo">024</span> protected IDatasetChangeChecker checker;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span><a name="line.25"></a> |
| <span class="sourceLineNo">026</span> class PeriodicRunnable implements Runnable {<a name="line.26"></a> |
| <span class="sourceLineNo">027</span> long millis;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span><a name="line.28"></a> |
| <span class="sourceLineNo">029</span> @Override<a name="line.29"></a> |
| <span class="sourceLineNo">030</span> public void run() {<a name="line.30"></a> |
| <span class="sourceLineNo">031</span> while (true) {<a name="line.31"></a> |
| <span class="sourceLineNo">032</span> try {<a name="line.32"></a> |
| <span class="sourceLineNo">033</span> Thread.sleep(millis);<a name="line.33"></a> |
| <span class="sourceLineNo">034</span> } catch (InterruptedException e) {<a name="line.34"></a> |
| <span class="sourceLineNo">035</span> break;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span> }<a name="line.36"></a> |
| <span class="sourceLineNo">037</span> if (checker == null || checker.check()) {<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> fireDataListeners();<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> }<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> }<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> }<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> }<a name="line.42"></a> |
| <span class="sourceLineNo">043</span><a name="line.43"></a> |
| <span class="sourceLineNo">044</span> private transient PeriodicRunnable runner = new PeriodicRunnable();<a name="line.44"></a> |
| <span class="sourceLineNo">045</span><a name="line.45"></a> |
| <span class="sourceLineNo">046</span> private Thread checkingThread;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span><a name="line.47"></a> |
| <span class="sourceLineNo">048</span> public LazyDynamicDataset(String name, int dtype, int elements, int[] shape, int[] maxShape, ILazyLoader loader) {<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> super(name, dtype, elements, shape, loader);<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> if (maxShape == null) {<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> this.maxShape = shape.clone();<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> // check there are no unlimited dimensions in shape<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> int rank = shape.length;<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> boolean isUnlimited = false;<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> for (int i = 0; i < rank; i++) {<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> if (shape[i] == ILazyWriteableDataset.UNLIMITED) {<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> isUnlimited = true;<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> break;<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> }<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> }<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> if (isUnlimited) { // set all zeros<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> for (int i = 0; i < rank; i++) {<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> this.shape[i] = 0;<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> this.oShape[i] = 0;<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> }<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> }<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> } else {<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> this.maxShape = maxShape.clone();<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> }<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> this.eventDelegate = new DataListenerDelegate();<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> }<a name="line.71"></a> |
| <span class="sourceLineNo">072</span><a name="line.72"></a> |
| <span class="sourceLineNo">073</span> /**<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> * @since 2.2<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> */<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> protected LazyDynamicDataset(LazyDynamicDataset other) {<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> super(other);<a name="line.77"></a> |
| <span class="sourceLineNo">078</span><a name="line.78"></a> |
| <span class="sourceLineNo">079</span> maxShape = other.maxShape;<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> eventDelegate = other.eventDelegate;<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> checker = other.checker;<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> runner = other.runner;<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> }<a name="line.83"></a> |
| <span class="sourceLineNo">084</span><a name="line.84"></a> |
| <span class="sourceLineNo">085</span> @Override<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> public int hashCode() {<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> final int prime = 31;<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> int result = super.hashCode();<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> result = prime * result + ((checker == null) ? 0 : checker.hashCode());<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> result = prime * result + ((checkingThread == null) ? 0 : checkingThread.hashCode());<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> result = prime * result + Arrays.hashCode(maxShape);<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> return result;<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> }<a name="line.93"></a> |
| <span class="sourceLineNo">094</span><a name="line.94"></a> |
| <span class="sourceLineNo">095</span> @Override<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> public boolean equals(Object obj) {<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> if (this == obj) {<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> return true;<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> }<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> if (!super.equals(obj)) {<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> return false;<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> }<a name="line.102"></a> |
| <span class="sourceLineNo">103</span><a name="line.103"></a> |
| <span class="sourceLineNo">104</span> LazyDynamicDataset other = (LazyDynamicDataset) obj;<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> if (!Arrays.equals(maxShape, other.maxShape)) {<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> return false;<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> }<a name="line.107"></a> |
| <span class="sourceLineNo">108</span><a name="line.108"></a> |
| <span class="sourceLineNo">109</span> if (checker == null) {<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> if (other.checker != null) {<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> return false;<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> }<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> } else if (!checker.equals(other.checker)) {<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> return false;<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> }<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> if (checkingThread == null) {<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> if (other.checkingThread != null) {<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> return false;<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> }<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> } else if (!checkingThread.equals(other.checkingThread)) {<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> return false;<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> }<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> return true;<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> }<a name="line.124"></a> |
| <span class="sourceLineNo">125</span><a name="line.125"></a> |
| <span class="sourceLineNo">126</span> @Override<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> public ILazyDataset getDataset() {<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> return this;<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> }<a name="line.129"></a> |
| <span class="sourceLineNo">130</span><a name="line.130"></a> |
| <span class="sourceLineNo">131</span> @Override<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> public void addDataListener(IDataListener l) {<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> eventDelegate.addDataListener(l);<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> }<a name="line.134"></a> |
| <span class="sourceLineNo">135</span><a name="line.135"></a> |
| <span class="sourceLineNo">136</span> @Override<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> public void removeDataListener(IDataListener l) {<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> eventDelegate.removeDataListener(l);<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> }<a name="line.139"></a> |
| <span class="sourceLineNo">140</span><a name="line.140"></a> |
| <span class="sourceLineNo">141</span> @Override<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> public void fireDataListeners() {<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> synchronized (eventDelegate) {<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> eventDelegate.fire(new DataEvent(name, shape));<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> }<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> }<a name="line.146"></a> |
| <span class="sourceLineNo">147</span><a name="line.147"></a> |
| <span class="sourceLineNo">148</span> @Override<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> public boolean refreshShape() {<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> if (loader instanceof ILazyDynamicLoader) {<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> return resize(((ILazyDynamicLoader)loader).refreshShape());<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> }<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> return false;<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> }<a name="line.154"></a> |
| <span class="sourceLineNo">155</span><a name="line.155"></a> |
| <span class="sourceLineNo">156</span> @Override<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> public boolean resize(int... newShape) {<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> int rank = shape.length;<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> if (newShape.length != rank) {<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> throw new IllegalArgumentException("Rank of new shape must match current shape");<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> }<a name="line.161"></a> |
| <span class="sourceLineNo">162</span><a name="line.162"></a> |
| <span class="sourceLineNo">163</span> if (Arrays.equals(shape, newShape)) {<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> return false;<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> }<a name="line.165"></a> |
| <span class="sourceLineNo">166</span><a name="line.166"></a> |
| <span class="sourceLineNo">167</span> if (maxShape != null) {<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> for (int i = 0; i < rank; i++) {<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> int m = maxShape[i];<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> if (m != -1 && newShape[i] > m) {<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> throw new IllegalArgumentException("A dimension of new shape must not exceed maximum shape");<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> }<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> }<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> }<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> this.shape = newShape.clone();<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> this.oShape = this.shape;<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> try {<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> size = ShapeUtils.calcLongSize(shape);<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> } catch (IllegalArgumentException e) {<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> size = Long.MAX_VALUE; // this indicates that the entire dataset cannot be read in! <a name="line.180"></a> |
| <span class="sourceLineNo">181</span> }<a name="line.181"></a> |
| <span class="sourceLineNo">182</span><a name="line.182"></a> |
| <span class="sourceLineNo">183</span> eventDelegate.fire(new DataEvent(name, shape));<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> return true;<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> }<a name="line.185"></a> |
| <span class="sourceLineNo">186</span><a name="line.186"></a> |
| <span class="sourceLineNo">187</span> @Override<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> public int[] getMaxShape() {<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> return maxShape;<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> }<a name="line.190"></a> |
| <span class="sourceLineNo">191</span><a name="line.191"></a> |
| <span class="sourceLineNo">192</span> @Override<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> public void setMaxShape(int... maxShape) {<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> this.maxShape = maxShape == null ? shape.clone() : maxShape.clone();<a name="line.194"></a> |
| <span class="sourceLineNo">195</span><a name="line.195"></a> |
| <span class="sourceLineNo">196</span> if (this.maxShape.length > oShape.length) {<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> oShape = prependShapeWithOnes(this.maxShape.length, oShape);<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> }<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> if (this.maxShape.length > shape.length) {<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> shape = prependShapeWithOnes(this.maxShape.length, shape); // TODO this does not update any metadata<a name="line.200"></a> |
| <span class="sourceLineNo">201</span>// setShapeInternal(prependShapeWithOnes(this.maxShape.length, shape));<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> }<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> }<a name="line.203"></a> |
| <span class="sourceLineNo">204</span><a name="line.204"></a> |
| <span class="sourceLineNo">205</span> private final static int[] prependShapeWithOnes(int rank, int[] shape) {<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> int[] nShape = new int[rank];<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> int excess = rank - shape.length;<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> for (int i = 0; i < excess; i++) {<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> nShape[i] = 1;<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> }<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> for (int i = excess; i < nShape.length; i++) {<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> nShape[i] = shape[i - excess];<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> }<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> return nShape;<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> }<a name="line.215"></a> |
| <span class="sourceLineNo">216</span><a name="line.216"></a> |
| <span class="sourceLineNo">217</span> @Override<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> public LazyDynamicDataset clone() {<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> return new LazyDynamicDataset(this);<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> }<a name="line.220"></a> |
| <span class="sourceLineNo">221</span><a name="line.221"></a> |
| <span class="sourceLineNo">222</span> @Override<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> public synchronized void startUpdateChecker(int milliseconds, IDatasetChangeChecker checker) {<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> // stop any current checking threads<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> if (checkingThread != null) {<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> checkingThread.interrupt();<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> }<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> this.checker = checker;<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> if (checker != null) {<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> checker.setDataset(this);<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> }<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> if (milliseconds <= 0) { <a name="line.232"></a> |
| <span class="sourceLineNo">233</span> return;<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> }<a name="line.234"></a> |
| <span class="sourceLineNo">235</span><a name="line.235"></a> |
| <span class="sourceLineNo">236</span> runner.millis = milliseconds;<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> checkingThread = new Thread(runner);<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> checkingThread.setDaemon(true);<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> checkingThread.setName("Checking thread with period " + milliseconds + "ms");<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> checkingThread.start();<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> }<a name="line.241"></a> |
| <span class="sourceLineNo">242</span>}<a name="line.242"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
