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author | dwinter |
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date | Tue, 04 Jan 2011 10:02:07 +0100 |
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<HTML> <BODY BGCOLOR="white"> <PRE> <FONT color="green">001</FONT> /*<a name="line.1"></a> <FONT color="green">002</FONT> * Licensed to the Apache Software Foundation (ASF) under one or more<a name="line.2"></a> <FONT color="green">003</FONT> * contributor license agreements. See the NOTICE file distributed with<a name="line.3"></a> <FONT color="green">004</FONT> * this work for additional information regarding copyright ownership.<a name="line.4"></a> <FONT color="green">005</FONT> * The ASF licenses this file to You under the Apache License, Version 2.0<a name="line.5"></a> <FONT color="green">006</FONT> * (the "License"); you may not use this file except in compliance with<a name="line.6"></a> <FONT color="green">007</FONT> * the License. You may obtain a copy of the License at<a name="line.7"></a> <FONT color="green">008</FONT> *<a name="line.8"></a> <FONT color="green">009</FONT> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a> <FONT color="green">010</FONT> *<a name="line.10"></a> <FONT color="green">011</FONT> * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a> <FONT color="green">012</FONT> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a> <FONT color="green">013</FONT> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a> <FONT color="green">014</FONT> * See the License for the specific language governing permissions and<a name="line.14"></a> <FONT color="green">015</FONT> * limitations under the License.<a name="line.15"></a> <FONT color="green">016</FONT> */<a name="line.16"></a> <FONT color="green">017</FONT> <a name="line.17"></a> <FONT color="green">018</FONT> package org.apache.commons.math.linear;<a name="line.18"></a> <FONT color="green">019</FONT> <a name="line.19"></a> <FONT color="green">020</FONT> import java.text.FieldPosition;<a name="line.20"></a> <FONT color="green">021</FONT> import java.text.NumberFormat;<a name="line.21"></a> <FONT color="green">022</FONT> import java.text.ParseException;<a name="line.22"></a> <FONT color="green">023</FONT> import java.text.ParsePosition;<a name="line.23"></a> <FONT color="green">024</FONT> import java.util.ArrayList;<a name="line.24"></a> <FONT color="green">025</FONT> import java.util.List;<a name="line.25"></a> <FONT color="green">026</FONT> import java.util.Locale;<a name="line.26"></a> <FONT color="green">027</FONT> <a name="line.27"></a> <FONT color="green">028</FONT> import org.apache.commons.math.MathRuntimeException;<a name="line.28"></a> <FONT color="green">029</FONT> import org.apache.commons.math.util.CompositeFormat;<a name="line.29"></a> <FONT color="green">030</FONT> <a name="line.30"></a> <FONT color="green">031</FONT> /**<a name="line.31"></a> <FONT color="green">032</FONT> * Formats a vector in components list format "{v0; v1; ...; vk-1}".<a name="line.32"></a> <FONT color="green">033</FONT> * <p>The prefix and suffix "{" and "}" and the separator "; " can be replaced by<a name="line.33"></a> <FONT color="green">034</FONT> * any user-defined strings. The number format for components can be configured.</p><a name="line.34"></a> <FONT color="green">035</FONT> * <p>White space is ignored at parse time, even if it is in the prefix, suffix<a name="line.35"></a> <FONT color="green">036</FONT> * or separator specifications. So even if the default separator does include a space<a name="line.36"></a> <FONT color="green">037</FONT> * character that is used at format time, both input string "{1;1;1}" and<a name="line.37"></a> <FONT color="green">038</FONT> * " { 1 ; 1 ; 1 } " will be parsed without error and the same vector will be<a name="line.38"></a> <FONT color="green">039</FONT> * returned. In the second case, however, the parse position after parsing will be<a name="line.39"></a> <FONT color="green">040</FONT> * just after the closing curly brace, i.e. just before the trailing space.</p><a name="line.40"></a> <FONT color="green">041</FONT> *<a name="line.41"></a> <FONT color="green">042</FONT> * @version $Revision: 783702 $ $Date: 2009-06-11 04:54:02 -0400 (Thu, 11 Jun 2009) $<a name="line.42"></a> <FONT color="green">043</FONT> * @since 2.0<a name="line.43"></a> <FONT color="green">044</FONT> */<a name="line.44"></a> <FONT color="green">045</FONT> public class RealVectorFormat extends CompositeFormat {<a name="line.45"></a> <FONT color="green">046</FONT> <a name="line.46"></a> <FONT color="green">047</FONT> /** Serializable version identifier */<a name="line.47"></a> <FONT color="green">048</FONT> private static final long serialVersionUID = -708767813036157690L;<a name="line.48"></a> <FONT color="green">049</FONT> <a name="line.49"></a> <FONT color="green">050</FONT> /** The default prefix: "{". */<a name="line.50"></a> <FONT color="green">051</FONT> private static final String DEFAULT_PREFIX = "{";<a name="line.51"></a> <FONT color="green">052</FONT> <a name="line.52"></a> <FONT color="green">053</FONT> /** The default suffix: "}". */<a name="line.53"></a> <FONT color="green">054</FONT> private static final String DEFAULT_SUFFIX = "}";<a name="line.54"></a> <FONT color="green">055</FONT> <a name="line.55"></a> <FONT color="green">056</FONT> /** The default separator: ", ". */<a name="line.56"></a> <FONT color="green">057</FONT> private static final String DEFAULT_SEPARATOR = "; ";<a name="line.57"></a> <FONT color="green">058</FONT> <a name="line.58"></a> <FONT color="green">059</FONT> /** Prefix. */<a name="line.59"></a> <FONT color="green">060</FONT> private final String prefix;<a name="line.60"></a> <FONT color="green">061</FONT> <a name="line.61"></a> <FONT color="green">062</FONT> /** Suffix. */<a name="line.62"></a> <FONT color="green">063</FONT> private final String suffix;<a name="line.63"></a> <FONT color="green">064</FONT> <a name="line.64"></a> <FONT color="green">065</FONT> /** Separator. */<a name="line.65"></a> <FONT color="green">066</FONT> private final String separator;<a name="line.66"></a> <FONT color="green">067</FONT> <a name="line.67"></a> <FONT color="green">068</FONT> /** Trimmed prefix. */<a name="line.68"></a> <FONT color="green">069</FONT> private final String trimmedPrefix;<a name="line.69"></a> <FONT color="green">070</FONT> <a name="line.70"></a> <FONT color="green">071</FONT> /** Trimmed suffix. */<a name="line.71"></a> <FONT color="green">072</FONT> private final String trimmedSuffix;<a name="line.72"></a> <FONT color="green">073</FONT> <a name="line.73"></a> <FONT color="green">074</FONT> /** Trimmed separator. */<a name="line.74"></a> <FONT color="green">075</FONT> private final String trimmedSeparator;<a name="line.75"></a> <FONT color="green">076</FONT> <a name="line.76"></a> <FONT color="green">077</FONT> /** The format used for components. */<a name="line.77"></a> <FONT color="green">078</FONT> private NumberFormat format;<a name="line.78"></a> <FONT color="green">079</FONT> <a name="line.79"></a> <FONT color="green">080</FONT> /**<a name="line.80"></a> <FONT color="green">081</FONT> * Create an instance with default settings.<a name="line.81"></a> <FONT color="green">082</FONT> * <p>The instance uses the default prefix, suffix and separator:<a name="line.82"></a> <FONT color="green">083</FONT> * "{", "}", and "; " and the default number format for components.</p><a name="line.83"></a> <FONT color="green">084</FONT> */<a name="line.84"></a> <FONT color="green">085</FONT> public RealVectorFormat() {<a name="line.85"></a> <FONT color="green">086</FONT> this(DEFAULT_PREFIX, DEFAULT_SUFFIX, DEFAULT_SEPARATOR, getDefaultNumberFormat());<a name="line.86"></a> <FONT color="green">087</FONT> }<a name="line.87"></a> <FONT color="green">088</FONT> <a name="line.88"></a> <FONT color="green">089</FONT> /**<a name="line.89"></a> <FONT color="green">090</FONT> * Create an instance with a custom number format for components.<a name="line.90"></a> <FONT color="green">091</FONT> * @param format the custom format for components.<a name="line.91"></a> <FONT color="green">092</FONT> */<a name="line.92"></a> <FONT color="green">093</FONT> public RealVectorFormat(final NumberFormat format) {<a name="line.93"></a> <FONT color="green">094</FONT> this(DEFAULT_PREFIX, DEFAULT_SUFFIX, DEFAULT_SEPARATOR, format);<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> /**<a name="line.97"></a> <FONT color="green">098</FONT> * Create an instance with custom prefix, suffix and separator.<a name="line.98"></a> <FONT color="green">099</FONT> * @param prefix prefix to use instead of the default "{"<a name="line.99"></a> <FONT color="green">100</FONT> * @param suffix suffix to use instead of the default "}"<a name="line.100"></a> <FONT color="green">101</FONT> * @param separator separator to use instead of the default "; "<a name="line.101"></a> <FONT color="green">102</FONT> */<a name="line.102"></a> <FONT color="green">103</FONT> public RealVectorFormat(final String prefix, final String suffix,<a name="line.103"></a> <FONT color="green">104</FONT> final String separator) {<a name="line.104"></a> <FONT color="green">105</FONT> this(prefix, suffix, separator, getDefaultNumberFormat());<a name="line.105"></a> <FONT color="green">106</FONT> }<a name="line.106"></a> <FONT color="green">107</FONT> <a name="line.107"></a> <FONT color="green">108</FONT> /**<a name="line.108"></a> <FONT color="green">109</FONT> * Create an instance with custom prefix, suffix, separator and format<a name="line.109"></a> <FONT color="green">110</FONT> * for components.<a name="line.110"></a> <FONT color="green">111</FONT> * @param prefix prefix to use instead of the default "{"<a name="line.111"></a> <FONT color="green">112</FONT> * @param suffix suffix to use instead of the default "}"<a name="line.112"></a> <FONT color="green">113</FONT> * @param separator separator to use instead of the default "; "<a name="line.113"></a> <FONT color="green">114</FONT> * @param format the custom format for components.<a name="line.114"></a> <FONT color="green">115</FONT> */<a name="line.115"></a> <FONT color="green">116</FONT> public RealVectorFormat(final String prefix, final String suffix,<a name="line.116"></a> <FONT color="green">117</FONT> final String separator, final NumberFormat format) {<a name="line.117"></a> <FONT color="green">118</FONT> this.prefix = prefix;<a name="line.118"></a> <FONT color="green">119</FONT> this.suffix = suffix;<a name="line.119"></a> <FONT color="green">120</FONT> this.separator = separator;<a name="line.120"></a> <FONT color="green">121</FONT> trimmedPrefix = prefix.trim();<a name="line.121"></a> <FONT color="green">122</FONT> trimmedSuffix = suffix.trim();<a name="line.122"></a> <FONT color="green">123</FONT> trimmedSeparator = separator.trim();<a name="line.123"></a> <FONT color="green">124</FONT> this.format = format;<a name="line.124"></a> <FONT color="green">125</FONT> }<a name="line.125"></a> <FONT color="green">126</FONT> <a name="line.126"></a> <FONT color="green">127</FONT> /**<a name="line.127"></a> <FONT color="green">128</FONT> * Get the set of locales for which real vectors formats are available.<a name="line.128"></a> <FONT color="green">129</FONT> * <p>This is the same set as the {@link NumberFormat} set.</p><a name="line.129"></a> <FONT color="green">130</FONT> * @return available real vector format locales.<a name="line.130"></a> <FONT color="green">131</FONT> */<a name="line.131"></a> <FONT color="green">132</FONT> public static Locale[] getAvailableLocales() {<a name="line.132"></a> <FONT color="green">133</FONT> return NumberFormat.getAvailableLocales();<a name="line.133"></a> <FONT color="green">134</FONT> }<a name="line.134"></a> <FONT color="green">135</FONT> <a name="line.135"></a> <FONT color="green">136</FONT> /**<a name="line.136"></a> <FONT color="green">137</FONT> * Get the format prefix.<a name="line.137"></a> <FONT color="green">138</FONT> * @return format prefix.<a name="line.138"></a> <FONT color="green">139</FONT> */<a name="line.139"></a> <FONT color="green">140</FONT> public String getPrefix() {<a name="line.140"></a> <FONT color="green">141</FONT> return prefix;<a name="line.141"></a> <FONT color="green">142</FONT> }<a name="line.142"></a> <FONT color="green">143</FONT> <a name="line.143"></a> <FONT color="green">144</FONT> /**<a name="line.144"></a> <FONT color="green">145</FONT> * Get the format suffix.<a name="line.145"></a> <FONT color="green">146</FONT> * @return format suffix.<a name="line.146"></a> <FONT color="green">147</FONT> */<a name="line.147"></a> <FONT color="green">148</FONT> public String getSuffix() {<a name="line.148"></a> <FONT color="green">149</FONT> return suffix;<a name="line.149"></a> <FONT color="green">150</FONT> }<a name="line.150"></a> <FONT color="green">151</FONT> <a name="line.151"></a> <FONT color="green">152</FONT> /**<a name="line.152"></a> <FONT color="green">153</FONT> * Get the format separator between components.<a name="line.153"></a> <FONT color="green">154</FONT> * @return format separator.<a name="line.154"></a> <FONT color="green">155</FONT> */<a name="line.155"></a> <FONT color="green">156</FONT> public String getSeparator() {<a name="line.156"></a> <FONT color="green">157</FONT> return separator;<a name="line.157"></a> <FONT color="green">158</FONT> }<a name="line.158"></a> <FONT color="green">159</FONT> <a name="line.159"></a> <FONT color="green">160</FONT> /**<a name="line.160"></a> <FONT color="green">161</FONT> * Get the components format.<a name="line.161"></a> <FONT color="green">162</FONT> * @return components format.<a name="line.162"></a> <FONT color="green">163</FONT> */<a name="line.163"></a> <FONT color="green">164</FONT> public NumberFormat getFormat() {<a name="line.164"></a> <FONT color="green">165</FONT> return format;<a name="line.165"></a> <FONT color="green">166</FONT> }<a name="line.166"></a> <FONT color="green">167</FONT> <a name="line.167"></a> <FONT color="green">168</FONT> /**<a name="line.168"></a> <FONT color="green">169</FONT> * Returns the default real vector format for the current locale.<a name="line.169"></a> <FONT color="green">170</FONT> * @return the default real vector format.<a name="line.170"></a> <FONT color="green">171</FONT> */<a name="line.171"></a> <FONT color="green">172</FONT> public static RealVectorFormat getInstance() {<a name="line.172"></a> <FONT color="green">173</FONT> return getInstance(Locale.getDefault());<a name="line.173"></a> <FONT color="green">174</FONT> }<a name="line.174"></a> <FONT color="green">175</FONT> <a name="line.175"></a> <FONT color="green">176</FONT> /**<a name="line.176"></a> <FONT color="green">177</FONT> * Returns the default real vector format for the given locale.<a name="line.177"></a> <FONT color="green">178</FONT> * @param locale the specific locale used by the format.<a name="line.178"></a> <FONT color="green">179</FONT> * @return the real vector format specific to the given locale.<a name="line.179"></a> <FONT color="green">180</FONT> */<a name="line.180"></a> <FONT color="green">181</FONT> public static RealVectorFormat getInstance(final Locale locale) {<a name="line.181"></a> <FONT color="green">182</FONT> return new RealVectorFormat(getDefaultNumberFormat(locale));<a name="line.182"></a> <FONT color="green">183</FONT> }<a name="line.183"></a> <FONT color="green">184</FONT> <a name="line.184"></a> <FONT color="green">185</FONT> /**<a name="line.185"></a> <FONT color="green">186</FONT> * This static method calls {@link #format(Object)} on a default instance of<a name="line.186"></a> <FONT color="green">187</FONT> * RealVectorFormat.<a name="line.187"></a> <FONT color="green">188</FONT> *<a name="line.188"></a> <FONT color="green">189</FONT> * @param v RealVector object to format<a name="line.189"></a> <FONT color="green">190</FONT> * @return A formatted vector<a name="line.190"></a> <FONT color="green">191</FONT> */<a name="line.191"></a> <FONT color="green">192</FONT> public static String formatRealVector(RealVector v) {<a name="line.192"></a> <FONT color="green">193</FONT> return getInstance().format(v);<a name="line.193"></a> <FONT color="green">194</FONT> }<a name="line.194"></a> <FONT color="green">195</FONT> <a name="line.195"></a> <FONT color="green">196</FONT> /**<a name="line.196"></a> <FONT color="green">197</FONT> * Formats a {@link RealVector} object to produce a string.<a name="line.197"></a> <FONT color="green">198</FONT> * @param vector the object to format.<a name="line.198"></a> <FONT color="green">199</FONT> * @param toAppendTo where the text is to be appended<a name="line.199"></a> <FONT color="green">200</FONT> * @param pos On input: an alignment field, if desired. On output: the<a name="line.200"></a> <FONT color="green">201</FONT> * offsets of the alignment field<a name="line.201"></a> <FONT color="green">202</FONT> * @return the value passed in as toAppendTo.<a name="line.202"></a> <FONT color="green">203</FONT> */<a name="line.203"></a> <FONT color="green">204</FONT> public StringBuffer format(RealVector vector, StringBuffer toAppendTo,<a name="line.204"></a> <FONT color="green">205</FONT> FieldPosition pos) {<a name="line.205"></a> <FONT color="green">206</FONT> <a name="line.206"></a> <FONT color="green">207</FONT> pos.setBeginIndex(0);<a name="line.207"></a> <FONT color="green">208</FONT> pos.setEndIndex(0);<a name="line.208"></a> <FONT color="green">209</FONT> <a name="line.209"></a> <FONT color="green">210</FONT> // format prefix<a name="line.210"></a> <FONT color="green">211</FONT> toAppendTo.append(prefix);<a name="line.211"></a> <FONT color="green">212</FONT> <a name="line.212"></a> <FONT color="green">213</FONT> // format components<a name="line.213"></a> <FONT color="green">214</FONT> for (int i = 0; i < vector.getDimension(); ++i) {<a name="line.214"></a> <FONT color="green">215</FONT> if (i > 0) {<a name="line.215"></a> <FONT color="green">216</FONT> toAppendTo.append(separator);<a name="line.216"></a> <FONT color="green">217</FONT> }<a name="line.217"></a> <FONT color="green">218</FONT> formatDouble(vector.getEntry(i), format, toAppendTo, pos);<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> // format suffix<a name="line.221"></a> <FONT color="green">222</FONT> toAppendTo.append(suffix);<a name="line.222"></a> <FONT color="green">223</FONT> <a name="line.223"></a> <FONT color="green">224</FONT> return toAppendTo;<a name="line.224"></a> <FONT color="green">225</FONT> <a name="line.225"></a> <FONT color="green">226</FONT> }<a name="line.226"></a> <FONT color="green">227</FONT> <a name="line.227"></a> <FONT color="green">228</FONT> /**<a name="line.228"></a> <FONT color="green">229</FONT> * Formats a object to produce a string.<a name="line.229"></a> <FONT color="green">230</FONT> * <p><code>obj</code> must be a {@link RealVector} object. Any other type of<a name="line.230"></a> <FONT color="green">231</FONT> * object will result in an {@link IllegalArgumentException} being thrown.</p><a name="line.231"></a> <FONT color="green">232</FONT> * @param obj the object to format.<a name="line.232"></a> <FONT color="green">233</FONT> * @param toAppendTo where the text is to be appended<a name="line.233"></a> <FONT color="green">234</FONT> * @param pos On input: an alignment field, if desired. On output: the<a name="line.234"></a> <FONT color="green">235</FONT> * offsets of the alignment field<a name="line.235"></a> <FONT color="green">236</FONT> * @return the value passed in as toAppendTo.<a name="line.236"></a> <FONT color="green">237</FONT> * @see java.text.Format#format(java.lang.Object, java.lang.StringBuffer, java.text.FieldPosition)<a name="line.237"></a> <FONT color="green">238</FONT> * @throws IllegalArgumentException is <code>obj</code> is not a valid type.<a name="line.238"></a> <FONT color="green">239</FONT> */<a name="line.239"></a> <FONT color="green">240</FONT> @Override<a name="line.240"></a> <FONT color="green">241</FONT> public StringBuffer format(Object obj, StringBuffer toAppendTo,<a name="line.241"></a> <FONT color="green">242</FONT> FieldPosition pos) {<a name="line.242"></a> <FONT color="green">243</FONT> <a name="line.243"></a> <FONT color="green">244</FONT> if (obj instanceof RealVector) {<a name="line.244"></a> <FONT color="green">245</FONT> return format( (RealVector)obj, toAppendTo, pos);<a name="line.245"></a> <FONT color="green">246</FONT> }<a name="line.246"></a> <FONT color="green">247</FONT> <a name="line.247"></a> <FONT color="green">248</FONT> throw MathRuntimeException.createIllegalArgumentException(<a name="line.248"></a> <FONT color="green">249</FONT> "cannot format a {0} instance as a real vector",<a name="line.249"></a> <FONT color="green">250</FONT> obj.getClass().getName());<a name="line.250"></a> <FONT color="green">251</FONT> <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> /**<a name="line.254"></a> <FONT color="green">255</FONT> * Parses a string to produce a {@link RealVector} object.<a name="line.255"></a> <FONT color="green">256</FONT> * @param source the string to parse<a name="line.256"></a> <FONT color="green">257</FONT> * @return the parsed {@link RealVector} object.<a name="line.257"></a> <FONT color="green">258</FONT> * @exception ParseException if the beginning of the specified string<a name="line.258"></a> <FONT color="green">259</FONT> * cannot be parsed.<a name="line.259"></a> <FONT color="green">260</FONT> */<a name="line.260"></a> <FONT color="green">261</FONT> public ArrayRealVector parse(String source) throws ParseException {<a name="line.261"></a> <FONT color="green">262</FONT> ParsePosition parsePosition = new ParsePosition(0);<a name="line.262"></a> <FONT color="green">263</FONT> ArrayRealVector result = parse(source, parsePosition);<a name="line.263"></a> <FONT color="green">264</FONT> if (parsePosition.getIndex() == 0) {<a name="line.264"></a> <FONT color="green">265</FONT> throw MathRuntimeException.createParseException(<a name="line.265"></a> <FONT color="green">266</FONT> parsePosition.getErrorIndex(),<a name="line.266"></a> <FONT color="green">267</FONT> "unparseable real vector: \"{0}\"", source);<a name="line.267"></a> <FONT color="green">268</FONT> }<a name="line.268"></a> <FONT color="green">269</FONT> return result;<a name="line.269"></a> <FONT color="green">270</FONT> }<a name="line.270"></a> <FONT color="green">271</FONT> <a name="line.271"></a> <FONT color="green">272</FONT> /**<a name="line.272"></a> <FONT color="green">273</FONT> * Parses a string to produce a {@link RealVector} object.<a name="line.273"></a> <FONT color="green">274</FONT> * @param source the string to parse<a name="line.274"></a> <FONT color="green">275</FONT> * @param pos input/ouput parsing parameter.<a name="line.275"></a> <FONT color="green">276</FONT> * @return the parsed {@link RealVector} object.<a name="line.276"></a> <FONT color="green">277</FONT> */<a name="line.277"></a> <FONT color="green">278</FONT> public ArrayRealVector parse(String source, ParsePosition pos) {<a name="line.278"></a> <FONT color="green">279</FONT> int initialIndex = pos.getIndex();<a name="line.279"></a> <FONT color="green">280</FONT> <a name="line.280"></a> <FONT color="green">281</FONT> // parse prefix<a name="line.281"></a> <FONT color="green">282</FONT> parseAndIgnoreWhitespace(source, pos);<a name="line.282"></a> <FONT color="green">283</FONT> if (!parseFixedstring(source, trimmedPrefix, pos)) {<a name="line.283"></a> <FONT color="green">284</FONT> return null;<a name="line.284"></a> <FONT color="green">285</FONT> }<a name="line.285"></a> <FONT color="green">286</FONT> <a name="line.286"></a> <FONT color="green">287</FONT> // parse components<a name="line.287"></a> <FONT color="green">288</FONT> List<Number> components = new ArrayList<Number>();<a name="line.288"></a> <FONT color="green">289</FONT> for (boolean loop = true; loop;){<a name="line.289"></a> <FONT color="green">290</FONT> <a name="line.290"></a> <FONT color="green">291</FONT> if (!components.isEmpty()) {<a name="line.291"></a> <FONT color="green">292</FONT> parseAndIgnoreWhitespace(source, pos);<a name="line.292"></a> <FONT color="green">293</FONT> if (!parseFixedstring(source, trimmedSeparator, pos)) {<a name="line.293"></a> <FONT color="green">294</FONT> loop = false;<a name="line.294"></a> <FONT color="green">295</FONT> }<a name="line.295"></a> <FONT color="green">296</FONT> }<a name="line.296"></a> <FONT color="green">297</FONT> <a name="line.297"></a> <FONT color="green">298</FONT> if (loop) {<a name="line.298"></a> <FONT color="green">299</FONT> parseAndIgnoreWhitespace(source, pos);<a name="line.299"></a> <FONT color="green">300</FONT> Number component = parseNumber(source, format, pos);<a name="line.300"></a> <FONT color="green">301</FONT> if (component != null) {<a name="line.301"></a> <FONT color="green">302</FONT> components.add(component);<a name="line.302"></a> <FONT color="green">303</FONT> } else {<a name="line.303"></a> <FONT color="green">304</FONT> // invalid component<a name="line.304"></a> <FONT color="green">305</FONT> // set index back to initial, error index should already be set<a name="line.305"></a> <FONT color="green">306</FONT> pos.setIndex(initialIndex);<a name="line.306"></a> <FONT color="green">307</FONT> return null;<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> <a name="line.310"></a> <FONT color="green">311</FONT> }<a name="line.311"></a> <FONT color="green">312</FONT> <a name="line.312"></a> <FONT color="green">313</FONT> // parse suffix<a name="line.313"></a> <FONT color="green">314</FONT> parseAndIgnoreWhitespace(source, pos);<a name="line.314"></a> <FONT color="green">315</FONT> if (!parseFixedstring(source, trimmedSuffix, pos)) {<a name="line.315"></a> <FONT color="green">316</FONT> return null;<a name="line.316"></a> <FONT color="green">317</FONT> }<a name="line.317"></a> <FONT color="green">318</FONT> <a name="line.318"></a> <FONT color="green">319</FONT> // build vector<a name="line.319"></a> <FONT color="green">320</FONT> double[] data = new double[components.size()];<a name="line.320"></a> <FONT color="green">321</FONT> for (int i = 0; i < data.length; ++i) {<a name="line.321"></a> <FONT color="green">322</FONT> data[i] = components.get(i).doubleValue();<a name="line.322"></a> <FONT color="green">323</FONT> }<a name="line.323"></a> <FONT color="green">324</FONT> return new ArrayRealVector(data, false);<a name="line.324"></a> <FONT color="green">325</FONT> <a name="line.325"></a> <FONT color="green">326</FONT> }<a name="line.326"></a> <FONT color="green">327</FONT> <a name="line.327"></a> <FONT color="green">328</FONT> /**<a name="line.328"></a> <FONT color="green">329</FONT> * Parses a string to produce a object.<a name="line.329"></a> <FONT color="green">330</FONT> * @param source the string to parse<a name="line.330"></a> <FONT color="green">331</FONT> * @param pos input/ouput parsing parameter.<a name="line.331"></a> <FONT color="green">332</FONT> * @return the parsed object.<a name="line.332"></a> <FONT color="green">333</FONT> * @see java.text.Format#parseObject(java.lang.String, java.text.ParsePosition)<a name="line.333"></a> <FONT color="green">334</FONT> */<a name="line.334"></a> <FONT color="green">335</FONT> @Override<a name="line.335"></a> <FONT color="green">336</FONT> public Object parseObject(String source, ParsePosition pos) {<a name="line.336"></a> <FONT color="green">337</FONT> return parse(source, pos);<a name="line.337"></a> <FONT color="green">338</FONT> }<a name="line.338"></a> <FONT color="green">339</FONT> <a name="line.339"></a> <FONT color="green">340</FONT> }<a name="line.340"></a> </PRE> </BODY> </HTML>