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TIEDEMANN / uplug-main-0.3.7 / share / ext / parser / malt / docs / api / src-html / org / maltparser / core / symbol / trie / Trie.html 
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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>    <a name="line.3"></a>
<FONT color="green">004</FONT>    import org.maltparser.core.symbol.SymbolException;<a name="line.4"></a>
<FONT color="green">005</FONT>    <a name="line.5"></a>
<FONT color="green">006</FONT>    /**<a name="line.6"></a>
<FONT color="green">007</FONT>    *<a name="line.7"></a>
<FONT color="green">008</FONT>    * @author Johan Hall<a name="line.8"></a>
<FONT color="green">009</FONT>    * @since 1.0<a name="line.9"></a>
<FONT color="green">010</FONT>    **/<a name="line.10"></a>
<FONT color="green">011</FONT>    public class Trie {<a name="line.11"></a>
<FONT color="green">012</FONT>            private final TrieNode root;<a name="line.12"></a>
<FONT color="green">013</FONT>            private final StringBuilder sb;<a name="line.13"></a>
<FONT color="green">014</FONT>    <a name="line.14"></a>
<FONT color="green">015</FONT>            public Trie() {<a name="line.15"></a>
<FONT color="green">016</FONT>                    root = new TrieNode(' ', null);<a name="line.16"></a>
<FONT color="green">017</FONT>                    sb = new StringBuilder();<a name="line.17"></a>
<FONT color="green">018</FONT>            }<a name="line.18"></a>
<FONT color="green">019</FONT>            <a name="line.19"></a>
<FONT color="green">020</FONT>            public TrieNode addValue(String value, TrieSymbolTable table, int code) throws SymbolException {<a name="line.20"></a>
<FONT color="green">021</FONT>                    TrieNode node = root;<a name="line.21"></a>
<FONT color="green">022</FONT>                    final char[] chars = value.toCharArray();<a name="line.22"></a>
<FONT color="green">023</FONT>                    for (int i = chars.length-1; i&gt;=0; i--) {<a name="line.23"></a>
<FONT color="green">024</FONT>                            if (i == 0) {<a name="line.24"></a>
<FONT color="green">025</FONT>                                    node = node.getOrAddChild(true, chars[i], table, code);<a name="line.25"></a>
<FONT color="green">026</FONT>                            } else {<a name="line.26"></a>
<FONT color="green">027</FONT>                                    node = node.getOrAddChild(false, chars[i], table, code);<a name="line.27"></a>
<FONT color="green">028</FONT>                            }<a name="line.28"></a>
<FONT color="green">029</FONT>                    }<a name="line.29"></a>
<FONT color="green">030</FONT>                    return node;<a name="line.30"></a>
<FONT color="green">031</FONT>            }<a name="line.31"></a>
<FONT color="green">032</FONT>            <a name="line.32"></a>
<FONT color="green">033</FONT>            public TrieNode addValue(StringBuilder symbol, TrieSymbolTable table, int code) throws SymbolException {<a name="line.33"></a>
<FONT color="green">034</FONT>                    TrieNode node = root;<a name="line.34"></a>
<FONT color="green">035</FONT>                    for (int i = symbol.length()-1; i&gt;=0; i--) {<a name="line.35"></a>
<FONT color="green">036</FONT>                            if (i == 0) {<a name="line.36"></a>
<FONT color="green">037</FONT>                                    node = node.getOrAddChild(true, symbol.charAt(i), table, code);<a name="line.37"></a>
<FONT color="green">038</FONT>                            } else {<a name="line.38"></a>
<FONT color="green">039</FONT>                                    node = node.getOrAddChild(false, symbol.charAt(i), table, code);<a name="line.39"></a>
<FONT color="green">040</FONT>                            }<a name="line.40"></a>
<FONT color="green">041</FONT>                    }<a name="line.41"></a>
<FONT color="green">042</FONT>                    return node;<a name="line.42"></a>
<FONT color="green">043</FONT>            }<a name="line.43"></a>
<FONT color="green">044</FONT>            <a name="line.44"></a>
<FONT color="green">045</FONT>            public String getValue(TrieNode node, TrieSymbolTable table) {<a name="line.45"></a>
<FONT color="green">046</FONT>                    sb.setLength(0);<a name="line.46"></a>
<FONT color="green">047</FONT>                    TrieNode tmp = node;<a name="line.47"></a>
<FONT color="green">048</FONT>                    while (tmp != root) { // &amp;&amp; tmp != null) {<a name="line.48"></a>
<FONT color="green">049</FONT>                            sb.append(tmp.getCharacter());<a name="line.49"></a>
<FONT color="green">050</FONT>                            tmp = tmp.getParent();<a name="line.50"></a>
<FONT color="green">051</FONT>                    }<a name="line.51"></a>
<FONT color="green">052</FONT>                    return sb.toString();<a name="line.52"></a>
<FONT color="green">053</FONT>            }<a name="line.53"></a>
<FONT color="green">054</FONT>            <a name="line.54"></a>
<FONT color="green">055</FONT>            public TrieEntry getEntry(String value, TrieSymbolTable table) {<a name="line.55"></a>
<FONT color="green">056</FONT>                    TrieNode node = root;<a name="line.56"></a>
<FONT color="green">057</FONT>                    final char[] chars = value.toCharArray();<a name="line.57"></a>
<FONT color="green">058</FONT>                    int i=chars.length-1;<a name="line.58"></a>
<FONT color="green">059</FONT>                    for (;i&gt;=0 &amp;&amp; node != null;i--) {<a name="line.59"></a>
<FONT color="green">060</FONT>                            node = node.getChild(chars[i]);<a name="line.60"></a>
<FONT color="green">061</FONT>                    }<a name="line.61"></a>
<FONT color="green">062</FONT>                    if (i &lt; 0 &amp;&amp; node != null) {<a name="line.62"></a>
<FONT color="green">063</FONT>                            return node.getEntry(table);<a name="line.63"></a>
<FONT color="green">064</FONT>                    } <a name="line.64"></a>
<FONT color="green">065</FONT>                    return null;<a name="line.65"></a>
<FONT color="green">066</FONT>            }<a name="line.66"></a>
<FONT color="green">067</FONT>            <a name="line.67"></a>
<FONT color="green">068</FONT>            public boolean equals(Object obj) {<a name="line.68"></a>
<FONT color="green">069</FONT>                    if (this == obj)<a name="line.69"></a>
<FONT color="green">070</FONT>                            return true;<a name="line.70"></a>
<FONT color="green">071</FONT>                    if (obj == null)<a name="line.71"></a>
<FONT color="green">072</FONT>                            return false;<a name="line.72"></a>
<FONT color="green">073</FONT>                    if (getClass() != obj.getClass())<a name="line.73"></a>
<FONT color="green">074</FONT>                            return false;<a name="line.74"></a>
<FONT color="green">075</FONT>                    return ((root == null) ? ((Trie)obj).root == null : root.equals(((Trie)obj).root));<a name="line.75"></a>
<FONT color="green">076</FONT>            }<a name="line.76"></a>
<FONT color="green">077</FONT>    <a name="line.77"></a>
<FONT color="green">078</FONT>            public int hashCode() {<a name="line.78"></a>
<FONT color="green">079</FONT>                    return 31 * 7 + (null == root ? 0 : root.hashCode());<a name="line.79"></a>
<FONT color="green">080</FONT>            }<a name="line.80"></a>
<FONT color="green">081</FONT>    }<a name="line.81"></a>




























































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