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<FONT color="green">001</FONT> package org.maltparser.core.symbol.trie;<a name="line.1"></a>
<FONT color="green">002</FONT> <a name="line.2"></a>
<FONT color="green">003</FONT> import java.io.BufferedReader;<a name="line.3"></a>
<FONT color="green">004</FONT> import java.io.BufferedWriter;<a name="line.4"></a>
<FONT color="green">005</FONT> import java.io.IOException;<a name="line.5"></a>
<FONT color="green">006</FONT> import java.util.Set;<a name="line.6"></a>
<FONT color="green">007</FONT> import java.util.SortedMap;<a name="line.7"></a>
<FONT color="green">008</FONT> import java.util.TreeMap;<a name="line.8"></a>
<FONT color="green">009</FONT> <a name="line.9"></a>
<FONT color="green">010</FONT> import org.apache.log4j.Logger;<a name="line.10"></a>
<FONT color="green">011</FONT> import org.maltparser.core.exception.MaltChainedException;<a name="line.11"></a>
<FONT color="green">012</FONT> import org.maltparser.core.io.dataformat.ColumnDescription;<a name="line.12"></a>
<FONT color="green">013</FONT> import org.maltparser.core.symbol.SymbolException;<a name="line.13"></a>
<FONT color="green">014</FONT> import org.maltparser.core.symbol.SymbolTable;<a name="line.14"></a>
<FONT color="green">015</FONT> import org.maltparser.core.symbol.nullvalue.InputNullValues;<a name="line.15"></a>
<FONT color="green">016</FONT> import org.maltparser.core.symbol.nullvalue.NullValues;<a name="line.16"></a>
<FONT color="green">017</FONT> import org.maltparser.core.symbol.nullvalue.OutputNullValues;<a name="line.17"></a>
<FONT color="green">018</FONT> import org.maltparser.core.symbol.nullvalue.NullValues.NullValueId;<a name="line.18"></a>
<FONT color="green">019</FONT> /**<a name="line.19"></a>
<FONT color="green">020</FONT> <a name="line.20"></a>
<FONT color="green">021</FONT> @author Johan Hall<a name="line.21"></a>
<FONT color="green">022</FONT> @since 1.0<a name="line.22"></a>
<FONT color="green">023</FONT> */<a name="line.23"></a>
<FONT color="green">024</FONT> public class TrieSymbolTable implements SymbolTable {<a name="line.24"></a>
<FONT color="green">025</FONT> private final String name;<a name="line.25"></a>
<FONT color="green">026</FONT> private final Trie trie;<a name="line.26"></a>
<FONT color="green">027</FONT> private final SortedMap<Integer, TrieNode> codeTable;<a name="line.27"></a>
<FONT color="green">028</FONT> private int columnCategory;<a name="line.28"></a>
<FONT color="green">029</FONT> private NullValues nullValues;<a name="line.29"></a>
<FONT color="green">030</FONT> private int valueCounter;<a name="line.30"></a>
<FONT color="green">031</FONT> /** Cache the hash code for the symbol table */<a name="line.31"></a>
<FONT color="green">032</FONT> private int cachedHash;<a name="line.32"></a>
<FONT color="green">033</FONT> <a name="line.33"></a>
<FONT color="green">034</FONT> public TrieSymbolTable(String name, Trie trie, int columnCategory, String nullValueStrategy) throws MaltChainedException {<a name="line.34"></a>
<FONT color="green">035</FONT> this.name = name;<a name="line.35"></a>
<FONT color="green">036</FONT> this.trie = trie;<a name="line.36"></a>
<FONT color="green">037</FONT> this.columnCategory = columnCategory;<a name="line.37"></a>
<FONT color="green">038</FONT> codeTable = new TreeMap<Integer, TrieNode>();<a name="line.38"></a>
<FONT color="green">039</FONT> if (columnCategory == ColumnDescription.INPUT) {<a name="line.39"></a>
<FONT color="green">040</FONT> nullValues = new InputNullValues(nullValueStrategy, this);<a name="line.40"></a>
<FONT color="green">041</FONT> } else if (columnCategory == ColumnDescription.DEPENDENCY_EDGE_LABEL) {<a name="line.41"></a>
<FONT color="green">042</FONT> nullValues = new OutputNullValues(nullValueStrategy, this, null);<a name="line.42"></a>
<FONT color="green">043</FONT> } else {<a name="line.43"></a>
<FONT color="green">044</FONT> nullValues = new InputNullValues(nullValueStrategy, this);<a name="line.44"></a>
<FONT color="green">045</FONT> }<a name="line.45"></a>
<FONT color="green">046</FONT> valueCounter = nullValues.getNextCode();<a name="line.46"></a>
<FONT color="green">047</FONT> }<a name="line.47"></a>
<FONT color="green">048</FONT> <a name="line.48"></a>
<FONT color="green">049</FONT> public TrieSymbolTable(String name, Trie trie, int columnCategory, String nullValueStrategy, String rootLabel) throws MaltChainedException {<a name="line.49"></a>
<FONT color="green">050</FONT> this.name = name;<a name="line.50"></a>
<FONT color="green">051</FONT> this.trie = trie;<a name="line.51"></a>
<FONT color="green">052</FONT> this.columnCategory = columnCategory;<a name="line.52"></a>
<FONT color="green">053</FONT> codeTable = new TreeMap<Integer, TrieNode>();<a name="line.53"></a>
<FONT color="green">054</FONT> if (columnCategory == ColumnDescription.INPUT) {<a name="line.54"></a>
<FONT color="green">055</FONT> nullValues = new InputNullValues(nullValueStrategy, this);<a name="line.55"></a>
<FONT color="green">056</FONT> } else if (columnCategory == ColumnDescription.DEPENDENCY_EDGE_LABEL) {<a name="line.56"></a>
<FONT color="green">057</FONT> nullValues = new OutputNullValues(nullValueStrategy, this, rootLabel);<a name="line.57"></a>
<FONT color="green">058</FONT> }<a name="line.58"></a>
<FONT color="green">059</FONT> valueCounter = nullValues.getNextCode();<a name="line.59"></a>
<FONT color="green">060</FONT> }<a name="line.60"></a>
<FONT color="green">061</FONT> <a name="line.61"></a>
<FONT color="green">062</FONT> public TrieSymbolTable(String name, Trie trie) {<a name="line.62"></a>
<FONT color="green">063</FONT> this.name = name;<a name="line.63"></a>
<FONT color="green">064</FONT> this.trie = trie;<a name="line.64"></a>
<FONT color="green">065</FONT> codeTable = new TreeMap<Integer, TrieNode>();<a name="line.65"></a>
<FONT color="green">066</FONT> nullValues = new InputNullValues("one", this);<a name="line.66"></a>
<FONT color="green">067</FONT> //nullValues = null;<a name="line.67"></a>
<FONT color="green">068</FONT> valueCounter = 1;<a name="line.68"></a>
<FONT color="green">069</FONT> }<a name="line.69"></a>
<FONT color="green">070</FONT> <a name="line.70"></a>
<FONT color="green">071</FONT> public int addSymbol(String symbol) throws MaltChainedException {<a name="line.71"></a>
<FONT color="green">072</FONT> if (nullValues == null || !nullValues.isNullValue(symbol)) {<a name="line.72"></a>
<FONT color="green">073</FONT> final TrieNode node = trie.addValue(symbol, this, -1);<a name="line.73"></a>
<FONT color="green">074</FONT> final int code = node.getEntry(this).getCode();<a name="line.74"></a>
<FONT color="green">075</FONT> if (!codeTable.containsKey(code)) {<a name="line.75"></a>
<FONT color="green">076</FONT> codeTable.put(code, node);<a name="line.76"></a>
<FONT color="green">077</FONT> }<a name="line.77"></a>
<FONT color="green">078</FONT> return code;<a name="line.78"></a>
<FONT color="green">079</FONT> } else {<a name="line.79"></a>
<FONT color="green">080</FONT> return nullValues.symbolToCode(symbol);<a name="line.80"></a>
<FONT color="green">081</FONT> }<a name="line.81"></a>
<FONT color="green">082</FONT> }<a name="line.82"></a>
<FONT color="green">083</FONT> <a name="line.83"></a>
<FONT color="green">084</FONT> public int addSymbol(StringBuilder symbol) throws MaltChainedException {<a name="line.84"></a>
<FONT color="green">085</FONT> if (nullValues == null || !nullValues.isNullValue(symbol)) {<a name="line.85"></a>
<FONT color="green">086</FONT> final TrieNode node = trie.addValue(symbol, this, -1);<a name="line.86"></a>
<FONT color="green">087</FONT> final int code = node.getEntry(this).getCode();<a name="line.87"></a>
<FONT color="green">088</FONT> if (!codeTable.containsKey(code)) {<a name="line.88"></a>
<FONT color="green">089</FONT> codeTable.put(code, node);<a name="line.89"></a>
<FONT color="green">090</FONT> }<a name="line.90"></a>
<FONT color="green">091</FONT> return code;<a name="line.91"></a>
<FONT color="green">092</FONT> } else {<a name="line.92"></a>
<FONT color="green">093</FONT> return nullValues.symbolToCode(symbol);<a name="line.93"></a>
<FONT color="green">094</FONT> }<a name="line.94"></a>
<FONT color="green">095</FONT> }<a name="line.95"></a>
<FONT color="green">096</FONT> <a name="line.96"></a>
<FONT color="green">097</FONT> public String getSymbolCodeToString(int code) throws MaltChainedException {<a name="line.97"></a>
<FONT color="green">098</FONT> if (code >= 0) {<a name="line.98"></a>
<FONT color="green">099</FONT> if (nullValues == null || !nullValues.isNullValue(code)) {<a name="line.99"></a>
<FONT color="green">100</FONT> if (trie == null) {<a name="line.100"></a>
<FONT color="green">101</FONT> throw new SymbolException("The symbol table is corrupt. ");<a name="line.101"></a>
<FONT color="green">102</FONT> }<a name="line.102"></a>
<FONT color="green">103</FONT> return trie.getValue(codeTable.get(code), this);<a name="line.103"></a>
<FONT color="green">104</FONT> } else {<a name="line.104"></a>
<FONT color="green">105</FONT> return nullValues.codeToSymbol(code);<a name="line.105"></a>
<FONT color="green">106</FONT> }<a name="line.106"></a>
<FONT color="green">107</FONT> } else {<a name="line.107"></a>
<FONT color="green">108</FONT> throw new SymbolException("The symbol code '"+code+"' cannot be found in the symbol table. ");<a name="line.108"></a>
<FONT color="green">109</FONT> }<a name="line.109"></a>
<FONT color="green">110</FONT> }<a name="line.110"></a>
<FONT color="green">111</FONT> <a name="line.111"></a>
<FONT color="green">112</FONT> public int getSymbolStringToCode(String symbol) throws MaltChainedException {<a name="line.112"></a>
<FONT color="green">113</FONT> if (symbol != null) {<a name="line.113"></a>
<FONT color="green">114</FONT> if (nullValues == null || !nullValues.isNullValue(symbol)) {<a name="line.114"></a>
<FONT color="green">115</FONT> if (trie == null) {<a name="line.115"></a>
<FONT color="green">116</FONT> throw new SymbolException("The symbol table is corrupt. ");<a name="line.116"></a>
<FONT color="green">117</FONT> } <a name="line.117"></a>
<FONT color="green">118</FONT> final TrieEntry entry = trie.getEntry(symbol, this);<a name="line.118"></a>
<FONT color="green">119</FONT> if (entry == null) {<a name="line.119"></a>
<FONT color="green">120</FONT> throw new SymbolException("Could not find the symbol '"+symbol+"' in the symbol table. ");<a name="line.120"></a>
<FONT color="green">121</FONT> }<a name="line.121"></a>
<FONT color="green">122</FONT> return entry.getCode(); <a name="line.122"></a>
<FONT color="green">123</FONT> } else {<a name="line.123"></a>
<FONT color="green">124</FONT> return nullValues.symbolToCode(symbol);<a name="line.124"></a>
<FONT color="green">125</FONT> }<a name="line.125"></a>
<FONT color="green">126</FONT> } else {<a name="line.126"></a>
<FONT color="green">127</FONT> throw new SymbolException("The symbol code '"+symbol+"' cannot be found in the symbol table. ");<a name="line.127"></a>
<FONT color="green">128</FONT> }<a name="line.128"></a>
<FONT color="green">129</FONT> }<a name="line.129"></a>
<FONT color="green">130</FONT> <a name="line.130"></a>
<FONT color="green">131</FONT> public String getNullValueStrategy() {<a name="line.131"></a>
<FONT color="green">132</FONT> if (nullValues == null) {<a name="line.132"></a>
<FONT color="green">133</FONT> return null;<a name="line.133"></a>
<FONT color="green">134</FONT> }<a name="line.134"></a>
<FONT color="green">135</FONT> return nullValues.getNullValueStrategy();<a name="line.135"></a>
<FONT color="green">136</FONT> }<a name="line.136"></a>
<FONT color="green">137</FONT> <a name="line.137"></a>
<FONT color="green">138</FONT> <a name="line.138"></a>
<FONT color="green">139</FONT> public int getColumnCategory() {<a name="line.139"></a>
<FONT color="green">140</FONT> return columnCategory;<a name="line.140"></a>
<FONT color="green">141</FONT> }<a name="line.141"></a>
<FONT color="green">142</FONT> <a name="line.142"></a>
<FONT color="green">143</FONT> public boolean getKnown(int code) {<a name="line.143"></a>
<FONT color="green">144</FONT> if (code >= 0) {<a name="line.144"></a>
<FONT color="green">145</FONT> if (nullValues == null || !nullValues.isNullValue(code)) {<a name="line.145"></a>
<FONT color="green">146</FONT> return codeTable.get(code).getEntry(this).isKnown();<a name="line.146"></a>
<FONT color="green">147</FONT> } else {<a name="line.147"></a>
<FONT color="green">148</FONT> return true;<a name="line.148"></a>
<FONT color="green">149</FONT> }<a name="line.149"></a>
<FONT color="green">150</FONT> } else {<a name="line.150"></a>
<FONT color="green">151</FONT> return false;<a name="line.151"></a>
<FONT color="green">152</FONT> }<a name="line.152"></a>
<FONT color="green">153</FONT> }<a name="line.153"></a>
<FONT color="green">154</FONT> <a name="line.154"></a>
<FONT color="green">155</FONT> public boolean getKnown(String symbol) {<a name="line.155"></a>
<FONT color="green">156</FONT> if (nullValues == null || !nullValues.isNullValue(symbol)) {<a name="line.156"></a>
<FONT color="green">157</FONT> final TrieEntry entry = trie.getEntry(symbol, this);<a name="line.157"></a>
<FONT color="green">158</FONT> if (entry == null) {<a name="line.158"></a>
<FONT color="green">159</FONT> return false;<a name="line.159"></a>
<FONT color="green">160</FONT> }<a name="line.160"></a>
<FONT color="green">161</FONT> return entry.isKnown();<a name="line.161"></a>
<FONT color="green">162</FONT> } else {<a name="line.162"></a>
<FONT color="green">163</FONT> return true;<a name="line.163"></a>
<FONT color="green">164</FONT> }<a name="line.164"></a>
<FONT color="green">165</FONT> }<a name="line.165"></a>
<FONT color="green">166</FONT> <a name="line.166"></a>
<FONT color="green">167</FONT> public void makeKnown(int code) {<a name="line.167"></a>
<FONT color="green">168</FONT> if (code >= 0) {<a name="line.168"></a>
<FONT color="green">169</FONT> if (nullValues == null || !nullValues.isNullValue(code)) {<a name="line.169"></a>
<FONT color="green">170</FONT> codeTable.get(code).getEntry(this).setKnown(true);<a name="line.170"></a>
<FONT color="green">171</FONT> } <a name="line.171"></a>
<FONT color="green">172</FONT> }<a name="line.172"></a>
<FONT color="green">173</FONT> }<a name="line.173"></a>
<FONT color="green">174</FONT> <a name="line.174"></a>
<FONT color="green">175</FONT> public void printSymbolTable(Logger logger) throws MaltChainedException {<a name="line.175"></a>
<FONT color="green">176</FONT> for (Integer code : codeTable.keySet()) {<a name="line.176"></a>
<FONT color="green">177</FONT> logger.info(code+"\t"+trie.getValue(codeTable.get(code), this)+"\n");<a name="line.177"></a>
<FONT color="green">178</FONT> }<a name="line.178"></a>
<FONT color="green">179</FONT> }<a name="line.179"></a>
<FONT color="green">180</FONT> <a name="line.180"></a>
<FONT color="green">181</FONT> public void saveHeader(BufferedWriter out) throws MaltChainedException {<a name="line.181"></a>
<FONT color="green">182</FONT> try {<a name="line.182"></a>
<FONT color="green">183</FONT> out.append('\t');<a name="line.183"></a>
<FONT color="green">184</FONT> out.append(getName());<a name="line.184"></a>
<FONT color="green">185</FONT> out.append('\t');<a name="line.185"></a>
<FONT color="green">186</FONT> out.append(Integer.toString(getColumnCategory()));<a name="line.186"></a>
<FONT color="green">187</FONT> out.append('\t');<a name="line.187"></a>
<FONT color="green">188</FONT> out.append(getNullValueStrategy());<a name="line.188"></a>
<FONT color="green">189</FONT> out.append('\t');<a name="line.189"></a>
<FONT color="green">190</FONT> if (nullValues instanceof OutputNullValues && ((OutputNullValues)nullValues).getRootLabel() != null) {<a name="line.190"></a>
<FONT color="green">191</FONT> out.append(((OutputNullValues)nullValues).getRootLabel());<a name="line.191"></a>
<FONT color="green">192</FONT> } else {<a name="line.192"></a>
<FONT color="green">193</FONT> out.append("#DUMMY#");<a name="line.193"></a>
<FONT color="green">194</FONT> }<a name="line.194"></a>
<FONT color="green">195</FONT> out.append('\n');<a name="line.195"></a>
<FONT color="green">196</FONT> } catch (IOException e) {<a name="line.196"></a>
<FONT color="green">197</FONT> throw new SymbolException("Could not save the symbol table. ", e);<a name="line.197"></a>
<FONT color="green">198</FONT> }<a name="line.198"></a>
<FONT color="green">199</FONT> }<a name="line.199"></a>
<FONT color="green">200</FONT> <a name="line.200"></a>
<FONT color="green">201</FONT> public int size() {<a name="line.201"></a>
<FONT color="green">202</FONT> return codeTable.size();<a name="line.202"></a>
<FONT color="green">203</FONT> }<a name="line.203"></a>
<FONT color="green">204</FONT> <a name="line.204"></a>
<FONT color="green">205</FONT> public void save(BufferedWriter out) throws MaltChainedException {<a name="line.205"></a>
<FONT color="green">206</FONT> try {<a name="line.206"></a>
<FONT color="green">207</FONT> out.write(name);<a name="line.207"></a>
<FONT color="green">208</FONT> out.write('\n');<a name="line.208"></a>
<FONT color="green">209</FONT> for (Integer code : codeTable.keySet()) {<a name="line.209"></a>
<FONT color="green">210</FONT> out.write(code+"");<a name="line.210"></a>
<FONT color="green">211</FONT> out.write('\t');<a name="line.211"></a>
<FONT color="green">212</FONT> out.write(trie.getValue(codeTable.get(code), this));<a name="line.212"></a>
<FONT color="green">213</FONT> out.write('\n');<a name="line.213"></a>
<FONT color="green">214</FONT> }<a name="line.214"></a>
<FONT color="green">215</FONT> out.write('\n');<a name="line.215"></a>
<FONT color="green">216</FONT> } catch (IOException e) {<a name="line.216"></a>
<FONT color="green">217</FONT> throw new SymbolException("Could not save the symbol table. ", e);<a name="line.217"></a>
<FONT color="green">218</FONT> }<a name="line.218"></a>
<FONT color="green">219</FONT> }<a name="line.219"></a>
<FONT color="green">220</FONT> <a name="line.220"></a>
<FONT color="green">221</FONT> public void load(BufferedReader in) throws MaltChainedException {<a name="line.221"></a>
<FONT color="green">222</FONT> int max = 0;<a name="line.222"></a>
<FONT color="green">223</FONT> int index = 0;<a name="line.223"></a>
<FONT color="green">224</FONT> String fileLine;<a name="line.224"></a>
<FONT color="green">225</FONT> try {<a name="line.225"></a>
<FONT color="green">226</FONT> while ((fileLine = in.readLine()) != null) {<a name="line.226"></a>
<FONT color="green">227</FONT> if (fileLine.length() == 0 || (index = fileLine.indexOf('\t')) == -1) {<a name="line.227"></a>
<FONT color="green">228</FONT> setValueCounter(max+1);<a name="line.228"></a>
<FONT color="green">229</FONT> break;<a name="line.229"></a>
<FONT color="green">230</FONT> }<a name="line.230"></a>
<FONT color="green">231</FONT> int code = Integer.parseInt(fileLine.substring(0,index));<a name="line.231"></a>
<FONT color="green">232</FONT> final String str = fileLine.substring(index+1);<a name="line.232"></a>
<FONT color="green">233</FONT> final TrieNode node = trie.addValue(str, this, code);<a name="line.233"></a>
<FONT color="green">234</FONT> codeTable.put(node.getEntry(this).getCode(), node);<a name="line.234"></a>
<FONT color="green">235</FONT> if (max < code) {<a name="line.235"></a>
<FONT color="green">236</FONT> max = code;<a name="line.236"></a>
<FONT color="green">237</FONT> }<a name="line.237"></a>
<FONT color="green">238</FONT> }<a name="line.238"></a>
<FONT color="green">239</FONT> } catch (NumberFormatException e) {<a name="line.239"></a>
<FONT color="green">240</FONT> throw new SymbolException("The symbol table file (.sym) contains a non-integer value in the first column. ", e);<a name="line.240"></a>
<FONT color="green">241</FONT> } catch (IOException e) {<a name="line.241"></a>
<FONT color="green">242</FONT> throw new SymbolException("Could not load the symbol table. ", e);<a name="line.242"></a>
<FONT color="green">243</FONT> }<a name="line.243"></a>
<FONT color="green">244</FONT> }<a name="line.244"></a>
<FONT color="green">245</FONT> <a name="line.245"></a>
<FONT color="green">246</FONT> public String getName() {<a name="line.246"></a>
<FONT color="green">247</FONT> return name;<a name="line.247"></a>
<FONT color="green">248</FONT> }<a name="line.248"></a>
<FONT color="green">249</FONT> <a name="line.249"></a>
<FONT color="green">250</FONT> public int getValueCounter() {<a name="line.250"></a>
<FONT color="green">251</FONT> return valueCounter;<a name="line.251"></a>
<FONT color="green">252</FONT> }<a name="line.252"></a>
<FONT color="green">253</FONT> <a name="line.253"></a>
<FONT color="green">254</FONT> private void setValueCounter(int valueCounter) {<a name="line.254"></a>
<FONT color="green">255</FONT> this.valueCounter = valueCounter;<a name="line.255"></a>
<FONT color="green">256</FONT> }<a name="line.256"></a>
<FONT color="green">257</FONT> <a name="line.257"></a>
<FONT color="green">258</FONT> protected void updateValueCounter(int code) {<a name="line.258"></a>
<FONT color="green">259</FONT> if (code > valueCounter) {<a name="line.259"></a>
<FONT color="green">260</FONT> valueCounter = code;<a name="line.260"></a>
<FONT color="green">261</FONT> }<a name="line.261"></a>
<FONT color="green">262</FONT> }<a name="line.262"></a>
<FONT color="green">263</FONT> <a name="line.263"></a>
<FONT color="green">264</FONT> protected int increaseValueCounter() {<a name="line.264"></a>
<FONT color="green">265</FONT> return valueCounter++;<a name="line.265"></a>
<FONT color="green">266</FONT> }<a name="line.266"></a>
<FONT color="green">267</FONT> <a name="line.267"></a>
<FONT color="green">268</FONT> public int getNullValueCode(NullValueId nullValueIdentifier) throws MaltChainedException {<a name="line.268"></a>
<FONT color="green">269</FONT> if (nullValues == null) {<a name="line.269"></a>
<FONT color="green">270</FONT> throw new SymbolException("The symbol table does not have any null-values. ");<a name="line.270"></a>
<FONT color="green">271</FONT> }<a name="line.271"></a>
<FONT color="green">272</FONT> return nullValues.nullvalueToCode(nullValueIdentifier);<a name="line.272"></a>
<FONT color="green">273</FONT> }<a name="line.273"></a>
<FONT color="green">274</FONT> <a name="line.274"></a>
<FONT color="green">275</FONT> public String getNullValueSymbol(NullValueId nullValueIdentifier) throws MaltChainedException {<a name="line.275"></a>
<FONT color="green">276</FONT> if (nullValues == null) {<a name="line.276"></a>
<FONT color="green">277</FONT> throw new SymbolException("The symbol table does not have any null-values. ");<a name="line.277"></a>
<FONT color="green">278</FONT> }<a name="line.278"></a>
<FONT color="green">279</FONT> return nullValues.nullvalueToSymbol(nullValueIdentifier);<a name="line.279"></a>
<FONT color="green">280</FONT> }<a name="line.280"></a>
<FONT color="green">281</FONT> <a name="line.281"></a>
<FONT color="green">282</FONT> public boolean isNullValue(String symbol) throws MaltChainedException {<a name="line.282"></a>
<FONT color="green">283</FONT> if (nullValues != null) {<a name="line.283"></a>
<FONT color="green">284</FONT> return nullValues.isNullValue(symbol);<a name="line.284"></a>
<FONT color="green">285</FONT> } <a name="line.285"></a>
<FONT color="green">286</FONT> return false;<a name="line.286"></a>
<FONT color="green">287</FONT> }<a name="line.287"></a>
<FONT color="green">288</FONT> <a name="line.288"></a>
<FONT color="green">289</FONT> public boolean isNullValue(int code) throws MaltChainedException {<a name="line.289"></a>
<FONT color="green">290</FONT> if (nullValues != null) {<a name="line.290"></a>
<FONT color="green">291</FONT> return nullValues.isNullValue(code);<a name="line.291"></a>
<FONT color="green">292</FONT> } <a name="line.292"></a>
<FONT color="green">293</FONT> return false;<a name="line.293"></a>
<FONT color="green">294</FONT> }<a name="line.294"></a>
<FONT color="green">295</FONT> <a name="line.295"></a>
<FONT color="green">296</FONT> public void copy(SymbolTable fromTable) throws MaltChainedException {<a name="line.296"></a>
<FONT color="green">297</FONT> final SortedMap<Integer, TrieNode> fromCodeTable = ((TrieSymbolTable)fromTable).getCodeTable();<a name="line.297"></a>
<FONT color="green">298</FONT> int max = getValueCounter()-1;<a name="line.298"></a>
<FONT color="green">299</FONT> for (Integer code : fromCodeTable.keySet()) {<a name="line.299"></a>
<FONT color="green">300</FONT> final String str = trie.getValue(fromCodeTable.get(code), this);<a name="line.300"></a>
<FONT color="green">301</FONT> final TrieNode node = trie.addValue(str, this, code);<a name="line.301"></a>
<FONT color="green">302</FONT> codeTable.put(node.getEntry(this).getCode(), node);<a name="line.302"></a>
<FONT color="green">303</FONT> if (max < code) {<a name="line.303"></a>
<FONT color="green">304</FONT> max = code;<a name="line.304"></a>
<FONT color="green">305</FONT> }<a name="line.305"></a>
<FONT color="green">306</FONT> }<a name="line.306"></a>
<FONT color="green">307</FONT> setValueCounter(max+1);<a name="line.307"></a>
<FONT color="green">308</FONT> }<a name="line.308"></a>
<FONT color="green">309</FONT> <a name="line.309"></a>
<FONT color="green">310</FONT> public SortedMap<Integer, TrieNode> getCodeTable() {<a name="line.310"></a>
<FONT color="green">311</FONT> return codeTable;<a name="line.311"></a>
<FONT color="green">312</FONT> }<a name="line.312"></a>
<FONT color="green">313</FONT> <a name="line.313"></a>
<FONT color="green">314</FONT> public Set<Integer> getCodes() {<a name="line.314"></a>
<FONT color="green">315</FONT> return codeTable.keySet();<a name="line.315"></a>
<FONT color="green">316</FONT> }<a name="line.316"></a>
<FONT color="green">317</FONT> <a name="line.317"></a>
<FONT color="green">318</FONT> protected Trie getTrie() {<a name="line.318"></a>
<FONT color="green">319</FONT> return trie;<a name="line.319"></a>
<FONT color="green">320</FONT> }<a name="line.320"></a>
<FONT color="green">321</FONT> <a name="line.321"></a>
<FONT color="green">322</FONT> public boolean equals(Object obj) {<a name="line.322"></a>
<FONT color="green">323</FONT> if (this == obj)<a name="line.323"></a>
<FONT color="green">324</FONT> return true;<a name="line.324"></a>
<FONT color="green">325</FONT> if (obj == null)<a name="line.325"></a>
<FONT color="green">326</FONT> return false;<a name="line.326"></a>
<FONT color="green">327</FONT> if (getClass() != obj.getClass())<a name="line.327"></a>
<FONT color="green">328</FONT> return false;<a name="line.328"></a>
<FONT color="green">329</FONT> return ((name == null) ? ((TrieSymbolTable)obj).name == null : name.equals(((TrieSymbolTable)obj).name));<a name="line.329"></a>
<FONT color="green">330</FONT> }<a name="line.330"></a>
<FONT color="green">331</FONT> <a name="line.331"></a>
<FONT color="green">332</FONT> public int hashCode() {<a name="line.332"></a>
<FONT color="green">333</FONT> if (cachedHash == 0) {<a name="line.333"></a>
<FONT color="green">334</FONT> cachedHash = 31 * 7 + (null == name ? 0 : name.hashCode());<a name="line.334"></a>
<FONT color="green">335</FONT> }<a name="line.335"></a>
<FONT color="green">336</FONT> return cachedHash;<a name="line.336"></a>
<FONT color="green">337</FONT> }<a name="line.337"></a>
<FONT color="green">338</FONT> <a name="line.338"></a>
<FONT color="green">339</FONT> public String toString() {<a name="line.339"></a>
<FONT color="green">340</FONT> final StringBuilder sb = new StringBuilder();<a name="line.340"></a>
<FONT color="green">341</FONT> sb.append(name);<a name="line.341"></a>
<FONT color="green">342</FONT> sb.append(" ");<a name="line.342"></a>
<FONT color="green">343</FONT> sb.append(valueCounter);<a name="line.343"></a>
<FONT color="green">344</FONT> return sb.toString();<a name="line.344"></a>
<FONT color="green">345</FONT> }<a name="line.345"></a>
<FONT color="green">346</FONT> }<a name="line.346"></a>
</PRE>
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