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| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one or more<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * contributor license agreements. See the NOTICE file distributed with<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * this work for additional information regarding copyright ownership.<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * The ASF licenses this file to You under the Apache license, Version 2.0<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * (the "License"); you may not use this file except in compliance with<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * the License. You may obtain a copy of the License at<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> *<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> *<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * See the license for the specific language governing permissions and<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * limitations under the license.<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> */<a name="line.16"></a> |
| <span class="sourceLineNo">017</span>package org.apache.logging.log4j.util;<a name="line.17"></a> |
| <span class="sourceLineNo">018</span><a name="line.18"></a> |
| <span class="sourceLineNo">019</span>import java.io.ByteArrayInputStream;<a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import java.io.ByteArrayOutputStream;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.io.IOException;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.io.InvalidObjectException;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.io.ObjectInputStream;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.io.ObjectOutputStream;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.io.StreamCorruptedException;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.lang.reflect.InvocationTargetException;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.lang.reflect.Method;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.lang.reflect.Modifier;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.util.Arrays;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import java.util.Collection;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import java.util.ConcurrentModificationException;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import java.util.HashMap;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import java.util.Map;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import java.util.Objects;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span><a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.logging.log4j.status.StatusLogger;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span><a name="line.37"></a> |
| <span class="sourceLineNo">038</span>/**<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> * <em>Consider this class private.</em><a name="line.39"></a> |
| <span class="sourceLineNo">040</span> * Array-based implementation of the {@code ReadOnlyStringMap} interface. Keys are held in a sorted array.<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> * <p><a name="line.41"></a> |
| <span class="sourceLineNo">042</span> * This is not a generic collection, but makes some trade-offs to optimize for the Log4j context data use case:<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> * </p><a name="line.43"></a> |
| <span class="sourceLineNo">044</span> * <ul><a name="line.44"></a> |
| <span class="sourceLineNo">045</span> * <li>Garbage-free iteration over key-value pairs with {@code BiConsumer} and {@code TriConsumer}.</li><a name="line.45"></a> |
| <span class="sourceLineNo">046</span> * <li>Fast copy. If the ThreadContextMap is also an instance of {@code SortedArrayStringMap}, the full thread context<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> * data can be transferred with two array copies and two field updates.</li><a name="line.47"></a> |
| <span class="sourceLineNo">048</span> * <li>Acceptable performance for small data sets. The current implementation stores keys in a sorted array, values<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> * are stored in a separate array at the same index.<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> * Worst-case performance of {@code get} and {@code containsKey} is O(log N),<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> * worst-case performance of {@code put} and {@code remove} is O(N log N).<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> * The expectation is that for the small values of {@code N} (less than 100) that are the vast majority of<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> * ThreadContext use cases, the constants dominate performance more than the asymptotic performance of the<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> * algorithms used.<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> * </li><a name="line.55"></a> |
| <span class="sourceLineNo">056</span> * <li>Compact representation.</li><a name="line.56"></a> |
| <span class="sourceLineNo">057</span> * </ul><a name="line.57"></a> |
| <span class="sourceLineNo">058</span> *<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> * @since 2.7<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> */<a name="line.60"></a> |
| <span class="sourceLineNo">061</span>public class SortedArrayStringMap implements IndexedStringMap {<a name="line.61"></a> |
| <span class="sourceLineNo">062</span><a name="line.62"></a> |
| <span class="sourceLineNo">063</span> /**<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> * The default initial capacity.<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> */<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> private static final int DEFAULT_INITIAL_CAPACITY = 4;<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> private static final long serialVersionUID = -5748905872274478116L;<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> private static final int HASHVAL = 31;<a name="line.68"></a> |
| <span class="sourceLineNo">069</span><a name="line.69"></a> |
| <span class="sourceLineNo">070</span> private static final TriConsumer<String, Object, StringMap> PUT_ALL = new TriConsumer<String, Object, StringMap>() {<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> @Override<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> public void accept(final String key, final Object value, final StringMap contextData) {<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> contextData.putValue(key, value);<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> }<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> };<a name="line.75"></a> |
| <span class="sourceLineNo">076</span><a name="line.76"></a> |
| <span class="sourceLineNo">077</span> /**<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> * An empty array instance to share when the table is not inflated.<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> */<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> private static final String[] EMPTY = {};<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> private static final String FROZEN = "Frozen collection cannot be modified";<a name="line.81"></a> |
| <span class="sourceLineNo">082</span><a name="line.82"></a> |
| <span class="sourceLineNo">083</span> private transient String[] keys = EMPTY;<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> private transient Object[] values = EMPTY;<a name="line.84"></a> |
| <span class="sourceLineNo">085</span><a name="line.85"></a> |
| <span class="sourceLineNo">086</span> /**<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> * The number of key-value mappings contained in this map.<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> */<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> private transient int size;<a name="line.89"></a> |
| <span class="sourceLineNo">090</span><a name="line.90"></a> |
| <span class="sourceLineNo">091</span> private static final Method setObjectInputFilter;<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> private static final Method getObjectInputFilter;<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> private static final Method newObjectInputFilter;<a name="line.93"></a> |
| <span class="sourceLineNo">094</span><a name="line.94"></a> |
| <span class="sourceLineNo">095</span> static {<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> Method[] methods = ObjectInputStream.class.getMethods();<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> Method setMethod = null;<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> Method getMethod = null;<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> for (final Method method : methods) {<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> if (method.getName().equals("setObjectInputFilter")) {<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> setMethod = method;<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> } else if (method.getName().equals("getObjectInputFilter")) {<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> getMethod = method;<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> }<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> }<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> Method newMethod = null;<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> try {<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> if (setMethod != null) {<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> final Class<?> clazz = Class.forName("org.apache.logging.log4j.util.internal.DefaultObjectInputFilter");<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> methods = clazz.getMethods();<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> for (final Method method : methods) {<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> if (method.getName().equals("newInstance") && Modifier.isStatic(method.getModifiers())) {<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> newMethod = method;<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> break;<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> }<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> }<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> }<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> } catch (final ClassNotFoundException ex) {<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> // Ignore the exception<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> }<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> newObjectInputFilter = newMethod;<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> setObjectInputFilter = setMethod;<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> getObjectInputFilter = getMethod;<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> /**<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> * The next size value at which to resize (capacity * load factor).<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> * @serial<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> */<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> // If table == EMPTY_TABLE then this is the initial capacity at which the<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> // table will be created when inflated.<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> private int threshold;<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> private boolean immutable;<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> private transient boolean iterating;<a name="line.134"></a> |
| <span class="sourceLineNo">135</span><a name="line.135"></a> |
| <span class="sourceLineNo">136</span> public SortedArrayStringMap() {<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> this(DEFAULT_INITIAL_CAPACITY);<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> }<a name="line.138"></a> |
| <span class="sourceLineNo">139</span><a name="line.139"></a> |
| <span class="sourceLineNo">140</span> public SortedArrayStringMap(final int initialCapacity) {<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> if (initialCapacity < 0) {<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> throw new IllegalArgumentException("Initial capacity must be at least zero but was " + initialCapacity);<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> }<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> threshold = ceilingNextPowerOfTwo(initialCapacity == 0 ? 1 : initialCapacity);<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> public SortedArrayStringMap(final ReadOnlyStringMap other) {<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> if (other instanceof SortedArrayStringMap) {<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> initFrom0((SortedArrayStringMap) other);<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> } else if (other != null) {<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> resize(ceilingNextPowerOfTwo(other.size()));<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> other.forEach(PUT_ALL, this);<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> }<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> public SortedArrayStringMap(final Map<String, ?> map) {<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> resize(ceilingNextPowerOfTwo(map.size()));<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> for (final Map.Entry<String, ?> entry : map.entrySet()) {<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> putValue(entry.getKey(), entry.getValue());<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> }<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> private void assertNotFrozen() {<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> if (immutable) {<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> throw new UnsupportedOperationException(FROZEN);<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> }<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> }<a name="line.167"></a> |
| <span class="sourceLineNo">168</span><a name="line.168"></a> |
| <span class="sourceLineNo">169</span> private void assertNoConcurrentModification() {<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> if (iterating) {<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> throw new ConcurrentModificationException();<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> @Override<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> public void clear() {<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> if (keys == EMPTY) {<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> return;<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> }<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> assertNotFrozen();<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> assertNoConcurrentModification();<a name="line.181"></a> |
| <span class="sourceLineNo">182</span><a name="line.182"></a> |
| <span class="sourceLineNo">183</span> Arrays.fill(keys, 0, size, null);<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> Arrays.fill(values, 0, size, null);<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> size = 0;<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> }<a name="line.186"></a> |
| <span class="sourceLineNo">187</span><a name="line.187"></a> |
| <span class="sourceLineNo">188</span> @Override<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> public boolean containsKey(final String key) {<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> return indexOfKey(key) >= 0;<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> }<a name="line.191"></a> |
| <span class="sourceLineNo">192</span><a name="line.192"></a> |
| <span class="sourceLineNo">193</span> @Override<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> public Map<String, String> toMap() {<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> final Map<String, String> result = new HashMap<>(size());<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> for (int i = 0; i < size(); i++) {<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> final Object value = getValueAt(i);<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> result.put(getKeyAt(i), value == null ? null : String.valueOf(value));<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> }<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> return result;<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> }<a name="line.201"></a> |
| <span class="sourceLineNo">202</span><a name="line.202"></a> |
| <span class="sourceLineNo">203</span> @Override<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> public void freeze() {<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> immutable = true;<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> }<a name="line.206"></a> |
| <span class="sourceLineNo">207</span><a name="line.207"></a> |
| <span class="sourceLineNo">208</span> @Override<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> public boolean isFrozen() {<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> return immutable;<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> }<a name="line.211"></a> |
| <span class="sourceLineNo">212</span><a name="line.212"></a> |
| <span class="sourceLineNo">213</span> @SuppressWarnings("unchecked")<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> @Override<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> public <V> V getValue(final String key) {<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> final int index = indexOfKey(key);<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> if (index < 0) {<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> return null;<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> }<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> return (V) values[index];<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> }<a name="line.221"></a> |
| <span class="sourceLineNo">222</span><a name="line.222"></a> |
| <span class="sourceLineNo">223</span> @Override<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> public boolean isEmpty() {<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> return size == 0;<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> }<a name="line.226"></a> |
| <span class="sourceLineNo">227</span><a name="line.227"></a> |
| <span class="sourceLineNo">228</span> @Override<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> public int indexOfKey(final String key) {<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> if (keys == EMPTY) {<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> return -1;<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> }<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> if (key == null) { // null key is located at the start of the array<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> return nullKeyIndex(); // insert at index zero<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> }<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> final int start = size > 0 && keys[0] == null ? 1 : 0;<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> return Arrays.binarySearch(keys, start, size, key);<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> }<a name="line.238"></a> |
| <span class="sourceLineNo">239</span><a name="line.239"></a> |
| <span class="sourceLineNo">240</span> private int nullKeyIndex() {<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> return size > 0 && keys[0] == null ? 0 : ~0;<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> }<a name="line.242"></a> |
| <span class="sourceLineNo">243</span><a name="line.243"></a> |
| <span class="sourceLineNo">244</span> @Override<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> public void putValue(final String key, final Object value) {<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> assertNotFrozen();<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> assertNoConcurrentModification();<a name="line.247"></a> |
| <span class="sourceLineNo">248</span><a name="line.248"></a> |
| <span class="sourceLineNo">249</span> if (keys == EMPTY) {<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> inflateTable(threshold);<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> }<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> final int index = indexOfKey(key);<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> if (index >= 0) {<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> keys[index] = key;<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> values[index] = value;<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> } else { // not found, so insert.<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> insertAt(~index, key, value);<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> }<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> }<a name="line.259"></a> |
| <span class="sourceLineNo">260</span><a name="line.260"></a> |
| <span class="sourceLineNo">261</span> private void insertAt(final int index, final String key, final Object value) {<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> ensureCapacity();<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> System.arraycopy(keys, index, keys, index + 1, size - index);<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> System.arraycopy(values, index, values, index + 1, size - index);<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> keys[index] = key;<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> values[index] = value;<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> size++;<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> }<a name="line.268"></a> |
| <span class="sourceLineNo">269</span><a name="line.269"></a> |
| <span class="sourceLineNo">270</span> @Override<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> public void putAll(final ReadOnlyStringMap source) {<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> if (source == this || source == null || source.isEmpty()) {<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> // this.putAll(this) does not modify this collection<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> // this.putAll(null) does not modify this collection<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> // this.putAll(empty ReadOnlyStringMap) does not modify this collection<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> return;<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> }<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> assertNotFrozen();<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> assertNoConcurrentModification();<a name="line.279"></a> |
| <span class="sourceLineNo">280</span><a name="line.280"></a> |
| <span class="sourceLineNo">281</span> if (source instanceof SortedArrayStringMap) {<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> if (this.size == 0) {<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> initFrom0((SortedArrayStringMap) source);<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> } else {<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> merge((SortedArrayStringMap) source);<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> }<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> } else if (source != null) {<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> source.forEach(PUT_ALL, this);<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> }<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> }<a name="line.290"></a> |
| <span class="sourceLineNo">291</span><a name="line.291"></a> |
| <span class="sourceLineNo">292</span> private void initFrom0(final SortedArrayStringMap other) {<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> if (keys.length < other.size) {<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> keys = new String[other.threshold];<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> values = new Object[other.threshold];<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> }<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> System.arraycopy(other.keys, 0, keys, 0, other.size);<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> System.arraycopy(other.values, 0, values, 0, other.size);<a name="line.298"></a> |
| <span class="sourceLineNo">299</span><a name="line.299"></a> |
| <span class="sourceLineNo">300</span> size = other.size;<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> threshold = other.threshold;<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> }<a name="line.302"></a> |
| <span class="sourceLineNo">303</span><a name="line.303"></a> |
| <span class="sourceLineNo">304</span> private void merge(final SortedArrayStringMap other) {<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> final String[] myKeys = keys;<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> final Object[] myVals = values;<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> final int newSize = other.size + this.size;<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> threshold = ceilingNextPowerOfTwo(newSize);<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> if (keys.length < threshold) {<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> keys = new String[threshold];<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> values = new Object[threshold];<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> }<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> // move largest collection to the beginning of this data structure, smallest to the end<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> boolean overwrite = true;<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> if (other.size() > size()) {<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> // move original key-values to end<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> System.arraycopy(myKeys, 0, keys, other.size, this.size);<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> System.arraycopy(myVals, 0, values, other.size, this.size);<a name="line.318"></a> |
| <span class="sourceLineNo">319</span><a name="line.319"></a> |
| <span class="sourceLineNo">320</span> // insert additional key-value pairs at the beginning<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> System.arraycopy(other.keys, 0, keys, 0, other.size);<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> System.arraycopy(other.values, 0, values, 0, other.size);<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> size = other.size;<a name="line.323"></a> |
| <span class="sourceLineNo">324</span><a name="line.324"></a> |
| <span class="sourceLineNo">325</span> // loop over original keys and insert (drop values for same key)<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> overwrite = false;<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> } else {<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> System.arraycopy(myKeys, 0, keys, 0, this.size);<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> System.arraycopy(myVals, 0, values, 0, this.size);<a name="line.329"></a> |
| <span class="sourceLineNo">330</span><a name="line.330"></a> |
| <span class="sourceLineNo">331</span> // move additional key-value pairs to end<a name="line.331"></a> |
| <span class="sourceLineNo">332</span> System.arraycopy(other.keys, 0, keys, this.size, other.size);<a name="line.332"></a> |
| <span class="sourceLineNo">333</span> System.arraycopy(other.values, 0, values, this.size, other.size);<a name="line.333"></a> |
| <span class="sourceLineNo">334</span><a name="line.334"></a> |
| <span class="sourceLineNo">335</span> // new values are at the end, will be processed below. Overwrite is true.<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> }<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> for (int i = size; i < newSize; i++) {<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> final int index = indexOfKey(keys[i]);<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> if (index < 0) { // key does not exist<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> insertAt(~index, keys[i], values[i]);<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> } else if (overwrite) { // existing key: only overwrite when looping over the new values<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> keys[index] = keys[i];<a name="line.342"></a> |
| <span class="sourceLineNo">343</span> values[index] = values[i];<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> }<a name="line.344"></a> |
| <span class="sourceLineNo">345</span> }<a name="line.345"></a> |
| <span class="sourceLineNo">346</span> // prevent memory leak: null out references<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> Arrays.fill(keys, size, newSize, null);<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> Arrays.fill(values, size, newSize, null);<a name="line.348"></a> |
| <span class="sourceLineNo">349</span> }<a name="line.349"></a> |
| <span class="sourceLineNo">350</span><a name="line.350"></a> |
| <span class="sourceLineNo">351</span> private void ensureCapacity() {<a name="line.351"></a> |
| <span class="sourceLineNo">352</span> if (size >= threshold) {<a name="line.352"></a> |
| <span class="sourceLineNo">353</span> resize(threshold * 2);<a name="line.353"></a> |
| <span class="sourceLineNo">354</span> }<a name="line.354"></a> |
| <span class="sourceLineNo">355</span> }<a name="line.355"></a> |
| <span class="sourceLineNo">356</span><a name="line.356"></a> |
| <span class="sourceLineNo">357</span> private void resize(final int newCapacity) {<a name="line.357"></a> |
| <span class="sourceLineNo">358</span> final String[] oldKeys = keys;<a name="line.358"></a> |
| <span class="sourceLineNo">359</span> final Object[] oldValues = values;<a name="line.359"></a> |
| <span class="sourceLineNo">360</span><a name="line.360"></a> |
| <span class="sourceLineNo">361</span> keys = new String[newCapacity];<a name="line.361"></a> |
| <span class="sourceLineNo">362</span> values = new Object[newCapacity];<a name="line.362"></a> |
| <span class="sourceLineNo">363</span><a name="line.363"></a> |
| <span class="sourceLineNo">364</span> System.arraycopy(oldKeys, 0, keys, 0, size);<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> System.arraycopy(oldValues, 0, values, 0, size);<a name="line.365"></a> |
| <span class="sourceLineNo">366</span><a name="line.366"></a> |
| <span class="sourceLineNo">367</span> threshold = newCapacity;<a name="line.367"></a> |
| <span class="sourceLineNo">368</span> }<a name="line.368"></a> |
| <span class="sourceLineNo">369</span><a name="line.369"></a> |
| <span class="sourceLineNo">370</span> /**<a name="line.370"></a> |
| <span class="sourceLineNo">371</span> * Inflates the table.<a name="line.371"></a> |
| <span class="sourceLineNo">372</span> */<a name="line.372"></a> |
| <span class="sourceLineNo">373</span> private void inflateTable(final int toSize) {<a name="line.373"></a> |
| <span class="sourceLineNo">374</span> threshold = toSize;<a name="line.374"></a> |
| <span class="sourceLineNo">375</span> keys = new String[toSize];<a name="line.375"></a> |
| <span class="sourceLineNo">376</span> values = new Object[toSize];<a name="line.376"></a> |
| <span class="sourceLineNo">377</span> }<a name="line.377"></a> |
| <span class="sourceLineNo">378</span><a name="line.378"></a> |
| <span class="sourceLineNo">379</span> @Override<a name="line.379"></a> |
| <span class="sourceLineNo">380</span> public void remove(final String key) {<a name="line.380"></a> |
| <span class="sourceLineNo">381</span> if (keys == EMPTY) {<a name="line.381"></a> |
| <span class="sourceLineNo">382</span> return;<a name="line.382"></a> |
| <span class="sourceLineNo">383</span> }<a name="line.383"></a> |
| <span class="sourceLineNo">384</span><a name="line.384"></a> |
| <span class="sourceLineNo">385</span> final int index = indexOfKey(key);<a name="line.385"></a> |
| <span class="sourceLineNo">386</span> if (index >= 0) {<a name="line.386"></a> |
| <span class="sourceLineNo">387</span> assertNotFrozen();<a name="line.387"></a> |
| <span class="sourceLineNo">388</span> assertNoConcurrentModification();<a name="line.388"></a> |
| <span class="sourceLineNo">389</span><a name="line.389"></a> |
| <span class="sourceLineNo">390</span> System.arraycopy(keys, index + 1, keys, index, size - 1 - index);<a name="line.390"></a> |
| <span class="sourceLineNo">391</span> System.arraycopy(values, index + 1, values, index, size - 1 - index);<a name="line.391"></a> |
| <span class="sourceLineNo">392</span> keys[size - 1] = null;<a name="line.392"></a> |
| <span class="sourceLineNo">393</span> values[size - 1] = null;<a name="line.393"></a> |
| <span class="sourceLineNo">394</span> size--;<a name="line.394"></a> |
| <span class="sourceLineNo">395</span> }<a name="line.395"></a> |
| <span class="sourceLineNo">396</span> }<a name="line.396"></a> |
| <span class="sourceLineNo">397</span><a name="line.397"></a> |
| <span class="sourceLineNo">398</span> @Override<a name="line.398"></a> |
| <span class="sourceLineNo">399</span> public String getKeyAt(final int index) {<a name="line.399"></a> |
| <span class="sourceLineNo">400</span> if (index < 0 || index >= size) {<a name="line.400"></a> |
| <span class="sourceLineNo">401</span> return null;<a name="line.401"></a> |
| <span class="sourceLineNo">402</span> }<a name="line.402"></a> |
| <span class="sourceLineNo">403</span> return keys[index];<a name="line.403"></a> |
| <span class="sourceLineNo">404</span> }<a name="line.404"></a> |
| <span class="sourceLineNo">405</span><a name="line.405"></a> |
| <span class="sourceLineNo">406</span> @SuppressWarnings("unchecked")<a name="line.406"></a> |
| <span class="sourceLineNo">407</span> @Override<a name="line.407"></a> |
| <span class="sourceLineNo">408</span> public <V> V getValueAt(final int index) {<a name="line.408"></a> |
| <span class="sourceLineNo">409</span> if (index < 0 || index >= size) {<a name="line.409"></a> |
| <span class="sourceLineNo">410</span> return null;<a name="line.410"></a> |
| <span class="sourceLineNo">411</span> }<a name="line.411"></a> |
| <span class="sourceLineNo">412</span> return (V) values[index];<a name="line.412"></a> |
| <span class="sourceLineNo">413</span> }<a name="line.413"></a> |
| <span class="sourceLineNo">414</span><a name="line.414"></a> |
| <span class="sourceLineNo">415</span> @Override<a name="line.415"></a> |
| <span class="sourceLineNo">416</span> public int size() {<a name="line.416"></a> |
| <span class="sourceLineNo">417</span> return size;<a name="line.417"></a> |
| <span class="sourceLineNo">418</span> }<a name="line.418"></a> |
| <span class="sourceLineNo">419</span><a name="line.419"></a> |
| <span class="sourceLineNo">420</span> @SuppressWarnings("unchecked")<a name="line.420"></a> |
| <span class="sourceLineNo">421</span> @Override<a name="line.421"></a> |
| <span class="sourceLineNo">422</span> public <V> void forEach(final BiConsumer<String, ? super V> action) {<a name="line.422"></a> |
| <span class="sourceLineNo">423</span> iterating = true;<a name="line.423"></a> |
| <span class="sourceLineNo">424</span> try {<a name="line.424"></a> |
| <span class="sourceLineNo">425</span> for (int i = 0; i < size; i++) {<a name="line.425"></a> |
| <span class="sourceLineNo">426</span> action.accept(keys[i], (V) values[i]);<a name="line.426"></a> |
| <span class="sourceLineNo">427</span> }<a name="line.427"></a> |
| <span class="sourceLineNo">428</span> } finally {<a name="line.428"></a> |
| <span class="sourceLineNo">429</span> iterating = false;<a name="line.429"></a> |
| <span class="sourceLineNo">430</span> }<a name="line.430"></a> |
| <span class="sourceLineNo">431</span> }<a name="line.431"></a> |
| <span class="sourceLineNo">432</span><a name="line.432"></a> |
| <span class="sourceLineNo">433</span> @SuppressWarnings("unchecked")<a name="line.433"></a> |
| <span class="sourceLineNo">434</span> @Override<a name="line.434"></a> |
| <span class="sourceLineNo">435</span> public <V, T> void forEach(final TriConsumer<String, ? super V, T> action, final T state) {<a name="line.435"></a> |
| <span class="sourceLineNo">436</span> iterating = true;<a name="line.436"></a> |
| <span class="sourceLineNo">437</span> try {<a name="line.437"></a> |
| <span class="sourceLineNo">438</span> for (int i = 0; i < size; i++) {<a name="line.438"></a> |
| <span class="sourceLineNo">439</span> action.accept(keys[i], (V) values[i], state);<a name="line.439"></a> |
| <span class="sourceLineNo">440</span> }<a name="line.440"></a> |
| <span class="sourceLineNo">441</span> } finally {<a name="line.441"></a> |
| <span class="sourceLineNo">442</span> iterating = false;<a name="line.442"></a> |
| <span class="sourceLineNo">443</span> }<a name="line.443"></a> |
| <span class="sourceLineNo">444</span> }<a name="line.444"></a> |
| <span class="sourceLineNo">445</span><a name="line.445"></a> |
| <span class="sourceLineNo">446</span> @Override<a name="line.446"></a> |
| <span class="sourceLineNo">447</span> public boolean equals(final Object obj) {<a name="line.447"></a> |
| <span class="sourceLineNo">448</span> if (obj == this) {<a name="line.448"></a> |
| <span class="sourceLineNo">449</span> return true;<a name="line.449"></a> |
| <span class="sourceLineNo">450</span> }<a name="line.450"></a> |
| <span class="sourceLineNo">451</span> if (!(obj instanceof SortedArrayStringMap)) {<a name="line.451"></a> |
| <span class="sourceLineNo">452</span> return false;<a name="line.452"></a> |
| <span class="sourceLineNo">453</span> }<a name="line.453"></a> |
| <span class="sourceLineNo">454</span> final SortedArrayStringMap other = (SortedArrayStringMap) obj;<a name="line.454"></a> |
| <span class="sourceLineNo">455</span> if (this.size() != other.size()) {<a name="line.455"></a> |
| <span class="sourceLineNo">456</span> return false;<a name="line.456"></a> |
| <span class="sourceLineNo">457</span> }<a name="line.457"></a> |
| <span class="sourceLineNo">458</span> for (int i = 0; i < size(); i++) {<a name="line.458"></a> |
| <span class="sourceLineNo">459</span> if (!Objects.equals(keys[i], other.keys[i])) {<a name="line.459"></a> |
| <span class="sourceLineNo">460</span> return false;<a name="line.460"></a> |
| <span class="sourceLineNo">461</span> }<a name="line.461"></a> |
| <span class="sourceLineNo">462</span> if (!Objects.equals(values[i], other.values[i])) {<a name="line.462"></a> |
| <span class="sourceLineNo">463</span> return false;<a name="line.463"></a> |
| <span class="sourceLineNo">464</span> }<a name="line.464"></a> |
| <span class="sourceLineNo">465</span> }<a name="line.465"></a> |
| <span class="sourceLineNo">466</span> return true;<a name="line.466"></a> |
| <span class="sourceLineNo">467</span> }<a name="line.467"></a> |
| <span class="sourceLineNo">468</span><a name="line.468"></a> |
| <span class="sourceLineNo">469</span> @Override<a name="line.469"></a> |
| <span class="sourceLineNo">470</span> public int hashCode() {<a name="line.470"></a> |
| <span class="sourceLineNo">471</span> int result = 37;<a name="line.471"></a> |
| <span class="sourceLineNo">472</span> result = HASHVAL * result + size;<a name="line.472"></a> |
| <span class="sourceLineNo">473</span> result = HASHVAL * result + hashCode(keys, size);<a name="line.473"></a> |
| <span class="sourceLineNo">474</span> result = HASHVAL * result + hashCode(values, size);<a name="line.474"></a> |
| <span class="sourceLineNo">475</span> return result;<a name="line.475"></a> |
| <span class="sourceLineNo">476</span> }<a name="line.476"></a> |
| <span class="sourceLineNo">477</span><a name="line.477"></a> |
| <span class="sourceLineNo">478</span> private static int hashCode(final Object[] values, final int length) {<a name="line.478"></a> |
| <span class="sourceLineNo">479</span> int result = 1;<a name="line.479"></a> |
| <span class="sourceLineNo">480</span> for (int i = 0; i < length; i++) {<a name="line.480"></a> |
| <span class="sourceLineNo">481</span> result = HASHVAL * result + (values[i] == null ? 0 : values[i].hashCode());<a name="line.481"></a> |
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| <span class="sourceLineNo">483</span> return result;<a name="line.483"></a> |
| <span class="sourceLineNo">484</span> }<a name="line.484"></a> |
| <span class="sourceLineNo">485</span><a name="line.485"></a> |
| <span class="sourceLineNo">486</span> @Override<a name="line.486"></a> |
| <span class="sourceLineNo">487</span> public String toString() {<a name="line.487"></a> |
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| <span class="sourceLineNo">489</span> sb.append('{');<a name="line.489"></a> |
| <span class="sourceLineNo">490</span> for (int i = 0; i < size; i++) {<a name="line.490"></a> |
| <span class="sourceLineNo">491</span> if (i > 0) {<a name="line.491"></a> |
| <span class="sourceLineNo">492</span> sb.append(", ");<a name="line.492"></a> |
| <span class="sourceLineNo">493</span> }<a name="line.493"></a> |
| <span class="sourceLineNo">494</span> sb.append(keys[i]).append('=');<a name="line.494"></a> |
| <span class="sourceLineNo">495</span> sb.append(values[i] == this ? "(this map)" : values[i]);<a name="line.495"></a> |
| <span class="sourceLineNo">496</span> }<a name="line.496"></a> |
| <span class="sourceLineNo">497</span> sb.append('}');<a name="line.497"></a> |
| <span class="sourceLineNo">498</span> return sb.toString();<a name="line.498"></a> |
| <span class="sourceLineNo">499</span> }<a name="line.499"></a> |
| <span class="sourceLineNo">500</span><a name="line.500"></a> |
| <span class="sourceLineNo">501</span> /**<a name="line.501"></a> |
| <span class="sourceLineNo">502</span> * Save the state of the {@code SortedArrayStringMap} instance to a stream (i.e.,<a name="line.502"></a> |
| <span class="sourceLineNo">503</span> * serialize it).<a name="line.503"></a> |
| <span class="sourceLineNo">504</span> *<a name="line.504"></a> |
| <span class="sourceLineNo">505</span> * @serialData The <i>capacity</i> of the SortedArrayStringMap (the length of the<a name="line.505"></a> |
| <span class="sourceLineNo">506</span> * bucket array) is emitted (int), followed by the<a name="line.506"></a> |
| <span class="sourceLineNo">507</span> * <i>size</i> (an int, the number of key-value<a name="line.507"></a> |
| <span class="sourceLineNo">508</span> * mappings), followed by the key (Object) and value (Object)<a name="line.508"></a> |
| <span class="sourceLineNo">509</span> * for each key-value mapping. The key-value mappings are<a name="line.509"></a> |
| <span class="sourceLineNo">510</span> * emitted in no particular order.<a name="line.510"></a> |
| <span class="sourceLineNo">511</span> */<a name="line.511"></a> |
| <span class="sourceLineNo">512</span> private void writeObject(final java.io.ObjectOutputStream s) throws IOException {<a name="line.512"></a> |
| <span class="sourceLineNo">513</span> // Write out the threshold, and any hidden stuff<a name="line.513"></a> |
| <span class="sourceLineNo">514</span> s.defaultWriteObject();<a name="line.514"></a> |
| <span class="sourceLineNo">515</span><a name="line.515"></a> |
| <span class="sourceLineNo">516</span> // Write out number of buckets<a name="line.516"></a> |
| <span class="sourceLineNo">517</span> if (keys == EMPTY) {<a name="line.517"></a> |
| <span class="sourceLineNo">518</span> s.writeInt(ceilingNextPowerOfTwo(threshold));<a name="line.518"></a> |
| <span class="sourceLineNo">519</span> } else {<a name="line.519"></a> |
| <span class="sourceLineNo">520</span> s.writeInt(keys.length);<a name="line.520"></a> |
| <span class="sourceLineNo">521</span> }<a name="line.521"></a> |
| <span class="sourceLineNo">522</span><a name="line.522"></a> |
| <span class="sourceLineNo">523</span> // Write out size (number of Mappings)<a name="line.523"></a> |
| <span class="sourceLineNo">524</span> s.writeInt(size);<a name="line.524"></a> |
| <span class="sourceLineNo">525</span><a name="line.525"></a> |
| <span class="sourceLineNo">526</span> // Write out keys and values (alternating)<a name="line.526"></a> |
| <span class="sourceLineNo">527</span> if (size > 0) {<a name="line.527"></a> |
| <span class="sourceLineNo">528</span> for (int i = 0; i < size; i++) {<a name="line.528"></a> |
| <span class="sourceLineNo">529</span> s.writeObject(keys[i]);<a name="line.529"></a> |
| <span class="sourceLineNo">530</span> try {<a name="line.530"></a> |
| <span class="sourceLineNo">531</span> s.writeObject(marshall(values[i]));<a name="line.531"></a> |
| <span class="sourceLineNo">532</span> } catch (final Exception e) {<a name="line.532"></a> |
| <span class="sourceLineNo">533</span> handleSerializationException(e, i, keys[i]);<a name="line.533"></a> |
| <span class="sourceLineNo">534</span> s.writeObject(null);<a name="line.534"></a> |
| <span class="sourceLineNo">535</span> }<a name="line.535"></a> |
| <span class="sourceLineNo">536</span> }<a name="line.536"></a> |
| <span class="sourceLineNo">537</span> }<a name="line.537"></a> |
| <span class="sourceLineNo">538</span> }<a name="line.538"></a> |
| <span class="sourceLineNo">539</span><a name="line.539"></a> |
| <span class="sourceLineNo">540</span> private static byte[] marshall(final Object obj) throws IOException {<a name="line.540"></a> |
| <span class="sourceLineNo">541</span> if (obj == null) {<a name="line.541"></a> |
| <span class="sourceLineNo">542</span> return null;<a name="line.542"></a> |
| <span class="sourceLineNo">543</span> }<a name="line.543"></a> |
| <span class="sourceLineNo">544</span> final ByteArrayOutputStream bout = new ByteArrayOutputStream();<a name="line.544"></a> |
| <span class="sourceLineNo">545</span> try (ObjectOutputStream oos = new ObjectOutputStream(bout)) {<a name="line.545"></a> |
| <span class="sourceLineNo">546</span> oos.writeObject(obj);<a name="line.546"></a> |
| <span class="sourceLineNo">547</span> oos.flush();<a name="line.547"></a> |
| <span class="sourceLineNo">548</span> return bout.toByteArray();<a name="line.548"></a> |
| <span class="sourceLineNo">549</span> }<a name="line.549"></a> |
| <span class="sourceLineNo">550</span> }<a name="line.550"></a> |
| <span class="sourceLineNo">551</span><a name="line.551"></a> |
| <span class="sourceLineNo">552</span> private static Object unmarshall(final byte[] data, final ObjectInputStream inputStream)<a name="line.552"></a> |
| <span class="sourceLineNo">553</span> throws IOException, ClassNotFoundException {<a name="line.553"></a> |
| <span class="sourceLineNo">554</span> final ByteArrayInputStream bin = new ByteArrayInputStream(data);<a name="line.554"></a> |
| <span class="sourceLineNo">555</span> Collection<String> allowedClasses = null;<a name="line.555"></a> |
| <span class="sourceLineNo">556</span> ObjectInputStream ois;<a name="line.556"></a> |
| <span class="sourceLineNo">557</span> if (inputStream instanceof FilteredObjectInputStream) {<a name="line.557"></a> |
| <span class="sourceLineNo">558</span> allowedClasses = ((FilteredObjectInputStream) inputStream).getAllowedClasses();<a name="line.558"></a> |
| <span class="sourceLineNo">559</span> ois = new FilteredObjectInputStream(bin, allowedClasses);<a name="line.559"></a> |
| <span class="sourceLineNo">560</span> } else {<a name="line.560"></a> |
| <span class="sourceLineNo">561</span> try {<a name="line.561"></a> |
| <span class="sourceLineNo">562</span> final Object obj = getObjectInputFilter.invoke(inputStream);<a name="line.562"></a> |
| <span class="sourceLineNo">563</span> final Object filter = newObjectInputFilter.invoke(null, obj);<a name="line.563"></a> |
| <span class="sourceLineNo">564</span> ois = new ObjectInputStream(bin);<a name="line.564"></a> |
| <span class="sourceLineNo">565</span> setObjectInputFilter.invoke(ois, filter);<a name="line.565"></a> |
| <span class="sourceLineNo">566</span> } catch (IllegalAccessException | InvocationTargetException ex) {<a name="line.566"></a> |
| <span class="sourceLineNo">567</span> throw new StreamCorruptedException("Unable to set ObjectInputFilter on stream");<a name="line.567"></a> |
| <span class="sourceLineNo">568</span> }<a name="line.568"></a> |
| <span class="sourceLineNo">569</span> }<a name="line.569"></a> |
| <span class="sourceLineNo">570</span> try {<a name="line.570"></a> |
| <span class="sourceLineNo">571</span> return ois.readObject();<a name="line.571"></a> |
| <span class="sourceLineNo">572</span> } finally {<a name="line.572"></a> |
| <span class="sourceLineNo">573</span> ois.close();<a name="line.573"></a> |
| <span class="sourceLineNo">574</span> }<a name="line.574"></a> |
| <span class="sourceLineNo">575</span> }<a name="line.575"></a> |
| <span class="sourceLineNo">576</span><a name="line.576"></a> |
| <span class="sourceLineNo">577</span> /**<a name="line.577"></a> |
| <span class="sourceLineNo">578</span> * Calculate the next power of 2, greater than or equal to x.<a name="line.578"></a> |
| <span class="sourceLineNo">579</span> * <p><a name="line.579"></a> |
| <span class="sourceLineNo">580</span> * From Hacker's Delight, Chapter 3, Harry S. Warren Jr.<a name="line.580"></a> |
| <span class="sourceLineNo">581</span> *<a name="line.581"></a> |
| <span class="sourceLineNo">582</span> * @param x Value to round up<a name="line.582"></a> |
| <span class="sourceLineNo">583</span> * @return The next power of 2 from x inclusive<a name="line.583"></a> |
| <span class="sourceLineNo">584</span> */<a name="line.584"></a> |
| <span class="sourceLineNo">585</span> private static int ceilingNextPowerOfTwo(final int x) {<a name="line.585"></a> |
| <span class="sourceLineNo">586</span> final int BITS_PER_INT = 32;<a name="line.586"></a> |
| <span class="sourceLineNo">587</span> return 1 << (BITS_PER_INT - Integer.numberOfLeadingZeros(x - 1));<a name="line.587"></a> |
| <span class="sourceLineNo">588</span> }<a name="line.588"></a> |
| <span class="sourceLineNo">589</span><a name="line.589"></a> |
| <span class="sourceLineNo">590</span> /**<a name="line.590"></a> |
| <span class="sourceLineNo">591</span> * Reconstitute the {@code SortedArrayStringMap} instance from a stream (i.e.,<a name="line.591"></a> |
| <span class="sourceLineNo">592</span> * deserialize it).<a name="line.592"></a> |
| <span class="sourceLineNo">593</span> */<a name="line.593"></a> |
| <span class="sourceLineNo">594</span> private void readObject(final java.io.ObjectInputStream s) throws IOException, ClassNotFoundException {<a name="line.594"></a> |
| <span class="sourceLineNo">595</span> if (!(s instanceof FilteredObjectInputStream) && setObjectInputFilter == null) {<a name="line.595"></a> |
| <span class="sourceLineNo">596</span> throw new IllegalArgumentException("readObject requires a FilteredObjectInputStream or an ObjectInputStream that accepts an ObjectInputFilter");<a name="line.596"></a> |
| <span class="sourceLineNo">597</span> }<a name="line.597"></a> |
| <span class="sourceLineNo">598</span> // Read in the threshold (ignored), and any hidden stuff<a name="line.598"></a> |
| <span class="sourceLineNo">599</span> s.defaultReadObject();<a name="line.599"></a> |
| <span class="sourceLineNo">600</span><a name="line.600"></a> |
| <span class="sourceLineNo">601</span> // set other fields that need values<a name="line.601"></a> |
| <span class="sourceLineNo">602</span> keys = EMPTY;<a name="line.602"></a> |
| <span class="sourceLineNo">603</span> values = EMPTY;<a name="line.603"></a> |
| <span class="sourceLineNo">604</span><a name="line.604"></a> |
| <span class="sourceLineNo">605</span> // Read in number of buckets<a name="line.605"></a> |
| <span class="sourceLineNo">606</span> final int capacity = s.readInt();<a name="line.606"></a> |
| <span class="sourceLineNo">607</span> if (capacity < 0) {<a name="line.607"></a> |
| <span class="sourceLineNo">608</span> throw new InvalidObjectException("Illegal capacity: " + capacity);<a name="line.608"></a> |
| <span class="sourceLineNo">609</span> }<a name="line.609"></a> |
| <span class="sourceLineNo">610</span><a name="line.610"></a> |
| <span class="sourceLineNo">611</span> // Read number of mappings<a name="line.611"></a> |
| <span class="sourceLineNo">612</span> final int mappings = s.readInt();<a name="line.612"></a> |
| <span class="sourceLineNo">613</span> if (mappings < 0) {<a name="line.613"></a> |
| <span class="sourceLineNo">614</span> throw new InvalidObjectException("Illegal mappings count: " + mappings);<a name="line.614"></a> |
| <span class="sourceLineNo">615</span> }<a name="line.615"></a> |
| <span class="sourceLineNo">616</span><a name="line.616"></a> |
| <span class="sourceLineNo">617</span> // allocate the bucket array;<a name="line.617"></a> |
| <span class="sourceLineNo">618</span> if (mappings > 0) {<a name="line.618"></a> |
| <span class="sourceLineNo">619</span> inflateTable(capacity);<a name="line.619"></a> |
| <span class="sourceLineNo">620</span> } else {<a name="line.620"></a> |
| <span class="sourceLineNo">621</span> threshold = capacity;<a name="line.621"></a> |
| <span class="sourceLineNo">622</span> }<a name="line.622"></a> |
| <span class="sourceLineNo">623</span><a name="line.623"></a> |
| <span class="sourceLineNo">624</span> // Read the keys and values, and put the mappings in the arrays<a name="line.624"></a> |
| <span class="sourceLineNo">625</span> for (int i = 0; i < mappings; i++) {<a name="line.625"></a> |
| <span class="sourceLineNo">626</span> keys[i] = (String) s.readObject();<a name="line.626"></a> |
| <span class="sourceLineNo">627</span> try {<a name="line.627"></a> |
| <span class="sourceLineNo">628</span> final byte[] marshalledObject = (byte[]) s.readObject();<a name="line.628"></a> |
| <span class="sourceLineNo">629</span> values[i] = marshalledObject == null ? null : unmarshall(marshalledObject, s);<a name="line.629"></a> |
| <span class="sourceLineNo">630</span> } catch (final Exception | LinkageError error) {<a name="line.630"></a> |
| <span class="sourceLineNo">631</span> handleSerializationException(error, i, keys[i]);<a name="line.631"></a> |
| <span class="sourceLineNo">632</span> values[i] = null;<a name="line.632"></a> |
| <span class="sourceLineNo">633</span> }<a name="line.633"></a> |
| <span class="sourceLineNo">634</span> }<a name="line.634"></a> |
| <span class="sourceLineNo">635</span> size = mappings;<a name="line.635"></a> |
| <span class="sourceLineNo">636</span> }<a name="line.636"></a> |
| <span class="sourceLineNo">637</span><a name="line.637"></a> |
| <span class="sourceLineNo">638</span> private void handleSerializationException(final Throwable t, final int i, final String key) {<a name="line.638"></a> |
| <span class="sourceLineNo">639</span> StatusLogger.getLogger().warn("Ignoring {} for key[{}] ('{}')", String.valueOf(t), i, keys[i]);<a name="line.639"></a> |
| <span class="sourceLineNo">640</span> }<a name="line.640"></a> |
| <span class="sourceLineNo">641</span>}<a name="line.641"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
