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| <FONT color="green">001</FONT> /*<a name="line.1"></a> |
| <FONT color="green">002</FONT> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <FONT color="green">003</FONT> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <FONT color="green">004</FONT> * distributed with this work for additional information<a name="line.4"></a> |
| <FONT color="green">005</FONT> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <FONT color="green">006</FONT> * to you under the Apache License, Version 2.0 (the "License");<a name="line.6"></a> |
| <FONT color="green">007</FONT> * you may not use this file except in compliance with the License.<a name="line.7"></a> |
| <FONT color="green">008</FONT> * You may obtain a copy of the License at<a name="line.8"></a> |
| <FONT color="green">009</FONT> *<a name="line.9"></a> |
| <FONT color="green">010</FONT> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <FONT color="green">011</FONT> *<a name="line.11"></a> |
| <FONT color="green">012</FONT> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a> |
| <FONT color="green">013</FONT> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a> |
| <FONT color="green">014</FONT> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a> |
| <FONT color="green">015</FONT> * See the License for the specific language governing permissions and<a name="line.15"></a> |
| <FONT color="green">016</FONT> * limitations under the License.<a name="line.16"></a> |
| <FONT color="green">017</FONT> */<a name="line.17"></a> |
| <FONT color="green">018</FONT> /*<a name="line.18"></a> |
| <FONT color="green">019</FONT> * $Id: IncrementalSAXSource_Xerces.java 468653 2006-10-28 07:07:05Z minchau $<a name="line.19"></a> |
| <FONT color="green">020</FONT> */<a name="line.20"></a> |
| <FONT color="green">021</FONT> <a name="line.21"></a> |
| <FONT color="green">022</FONT> package org.apache.xml.dtm.ref;<a name="line.22"></a> |
| <FONT color="green">023</FONT> <a name="line.23"></a> |
| <FONT color="green">024</FONT> import java.io.IOException;<a name="line.24"></a> |
| <FONT color="green">025</FONT> import java.lang.reflect.Constructor;<a name="line.25"></a> |
| <FONT color="green">026</FONT> import java.lang.reflect.Method;<a name="line.26"></a> |
| <FONT color="green">027</FONT> <a name="line.27"></a> |
| <FONT color="green">028</FONT> import org.apache.xerces.parsers.SAXParser;<a name="line.28"></a> |
| <FONT color="green">029</FONT> import org.apache.xml.res.XMLErrorResources;<a name="line.29"></a> |
| <FONT color="green">030</FONT> import org.apache.xml.res.XMLMessages;<a name="line.30"></a> |
| <FONT color="green">031</FONT> <a name="line.31"></a> |
| <FONT color="green">032</FONT> import org.xml.sax.InputSource;<a name="line.32"></a> |
| <FONT color="green">033</FONT> import org.xml.sax.SAXException;<a name="line.33"></a> |
| <FONT color="green">034</FONT> import org.xml.sax.XMLReader;<a name="line.34"></a> |
| <FONT color="green">035</FONT> <a name="line.35"></a> |
| <FONT color="green">036</FONT> <a name="line.36"></a> |
| <FONT color="green">037</FONT> /** <p>IncrementalSAXSource_Xerces takes advantage of the fact that Xerces1<a name="line.37"></a> |
| <FONT color="green">038</FONT> * incremental mode is already a coroutine of sorts, and just wraps our<a name="line.38"></a> |
| <FONT color="green">039</FONT> * IncrementalSAXSource API around it.</p><a name="line.39"></a> |
| <FONT color="green">040</FONT> *<a name="line.40"></a> |
| <FONT color="green">041</FONT> * <p>Usage example: See main().</p><a name="line.41"></a> |
| <FONT color="green">042</FONT> *<a name="line.42"></a> |
| <FONT color="green">043</FONT> * <p>Status: Passes simple main() unit-test. NEEDS JAVADOC.</p><a name="line.43"></a> |
| <FONT color="green">044</FONT> * */<a name="line.44"></a> |
| <FONT color="green">045</FONT> public class IncrementalSAXSource_Xerces<a name="line.45"></a> |
| <FONT color="green">046</FONT> implements IncrementalSAXSource<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> // Reflection. To allow this to compile with both Xerces1 and Xerces2, which<a name="line.49"></a> |
| <FONT color="green">050</FONT> // require very different methods and objects, we need to avoid static <a name="line.50"></a> |
| <FONT color="green">051</FONT> // references to those APIs. So until Xerces2 is pervasive and we're willing <a name="line.51"></a> |
| <FONT color="green">052</FONT> // to make it a prerequisite, we will rely upon relection.<a name="line.52"></a> |
| <FONT color="green">053</FONT> //<a name="line.53"></a> |
| <FONT color="green">054</FONT> Method fParseSomeSetup=null; // Xerces1 method<a name="line.54"></a> |
| <FONT color="green">055</FONT> Method fParseSome=null; // Xerces1 method<a name="line.55"></a> |
| <FONT color="green">056</FONT> Object fPullParserConfig=null; // Xerces2 pull control object<a name="line.56"></a> |
| <FONT color="green">057</FONT> Method fConfigSetInput=null; // Xerces2 method<a name="line.57"></a> |
| <FONT color="green">058</FONT> Method fConfigParse=null; // Xerces2 method<a name="line.58"></a> |
| <FONT color="green">059</FONT> Method fSetInputSource=null; // Xerces2 pull control method<a name="line.59"></a> |
| <FONT color="green">060</FONT> Constructor fConfigInputSourceCtor=null; // Xerces2 initialization method<a name="line.60"></a> |
| <FONT color="green">061</FONT> Method fConfigSetByteStream=null; // Xerces2 initialization method<a name="line.61"></a> |
| <FONT color="green">062</FONT> Method fConfigSetCharStream=null; // Xerces2 initialization method<a name="line.62"></a> |
| <FONT color="green">063</FONT> Method fConfigSetEncoding=null; // Xerces2 initialization method<a name="line.63"></a> |
| <FONT color="green">064</FONT> Method fReset=null; // Both Xerces1 and Xerces2, but diff. signatures<a name="line.64"></a> |
| <FONT color="green">065</FONT> <a name="line.65"></a> |
| <FONT color="green">066</FONT> //<a name="line.66"></a> |
| <FONT color="green">067</FONT> // Data<a name="line.67"></a> |
| <FONT color="green">068</FONT> //<a name="line.68"></a> |
| <FONT color="green">069</FONT> SAXParser fIncrementalParser;<a name="line.69"></a> |
| <FONT color="green">070</FONT> private boolean fParseInProgress=false;<a name="line.70"></a> |
| <FONT color="green">071</FONT> <a name="line.71"></a> |
| <FONT color="green">072</FONT> //<a name="line.72"></a> |
| <FONT color="green">073</FONT> // Constructors<a name="line.73"></a> |
| <FONT color="green">074</FONT> //<a name="line.74"></a> |
| <FONT color="green">075</FONT> <a name="line.75"></a> |
| <FONT color="green">076</FONT> /** Create a IncrementalSAXSource_Xerces, and create a SAXParser<a name="line.76"></a> |
| <FONT color="green">077</FONT> * to go with it. Xerces2 incremental parsing is only supported if<a name="line.77"></a> |
| <FONT color="green">078</FONT> * this constructor is used, due to limitations in the Xerces2 API (as of<a name="line.78"></a> |
| <FONT color="green">079</FONT> * Beta 3). If you don't like that restriction, tell the Xerces folks that<a name="line.79"></a> |
| <FONT color="green">080</FONT> * there should be a simpler way to request incremental SAX parsing.<a name="line.80"></a> |
| <FONT color="green">081</FONT> * */<a name="line.81"></a> |
| <FONT color="green">082</FONT> public IncrementalSAXSource_Xerces() <a name="line.82"></a> |
| <FONT color="green">083</FONT> throws NoSuchMethodException<a name="line.83"></a> |
| <FONT color="green">084</FONT> {<a name="line.84"></a> |
| <FONT color="green">085</FONT> try<a name="line.85"></a> |
| <FONT color="green">086</FONT> {<a name="line.86"></a> |
| <FONT color="green">087</FONT> // Xerces-2 incremental parsing support (as of Beta 3)<a name="line.87"></a> |
| <FONT color="green">088</FONT> // ContentHandlers still get set on fIncrementalParser (to get<a name="line.88"></a> |
| <FONT color="green">089</FONT> // conversion from XNI events to SAX events), but<a name="line.89"></a> |
| <FONT color="green">090</FONT> // _control_ for incremental parsing must be exercised via the config.<a name="line.90"></a> |
| <FONT color="green">091</FONT> // <a name="line.91"></a> |
| <FONT color="green">092</FONT> // At this time there's no way to read the existing config, only <a name="line.92"></a> |
| <FONT color="green">093</FONT> // to assert a new one... and only when creating a brand-new parser.<a name="line.93"></a> |
| <FONT color="green">094</FONT> //<a name="line.94"></a> |
| <FONT color="green">095</FONT> // Reflection is used to allow us to continue to compile against<a name="line.95"></a> |
| <FONT color="green">096</FONT> // Xerces1. If/when we can abandon the older versions of the parser,<a name="line.96"></a> |
| <FONT color="green">097</FONT> // this will simplify significantly.<a name="line.97"></a> |
| <FONT color="green">098</FONT> <a name="line.98"></a> |
| <FONT color="green">099</FONT> // If we can't get the magic constructor, no need to look further.<a name="line.99"></a> |
| <FONT color="green">100</FONT> Class xniConfigClass=ObjectFactory.findProviderClass(<a name="line.100"></a> |
| <FONT color="green">101</FONT> "org.apache.xerces.xni.parser.XMLParserConfiguration",<a name="line.101"></a> |
| <FONT color="green">102</FONT> ObjectFactory.findClassLoader(), true);<a name="line.102"></a> |
| <FONT color="green">103</FONT> Class[] args1={xniConfigClass};<a name="line.103"></a> |
| <FONT color="green">104</FONT> Constructor ctor=SAXParser.class.getConstructor(args1);<a name="line.104"></a> |
| <FONT color="green">105</FONT> <a name="line.105"></a> |
| <FONT color="green">106</FONT> // Build the parser configuration object. StandardParserConfiguration<a name="line.106"></a> |
| <FONT color="green">107</FONT> // happens to implement XMLPullParserConfiguration, which is the API<a name="line.107"></a> |
| <FONT color="green">108</FONT> // we're going to want to use.<a name="line.108"></a> |
| <FONT color="green">109</FONT> Class xniStdConfigClass=ObjectFactory.findProviderClass(<a name="line.109"></a> |
| <FONT color="green">110</FONT> "org.apache.xerces.parsers.StandardParserConfiguration",<a name="line.110"></a> |
| <FONT color="green">111</FONT> ObjectFactory.findClassLoader(), true);<a name="line.111"></a> |
| <FONT color="green">112</FONT> fPullParserConfig=xniStdConfigClass.newInstance();<a name="line.112"></a> |
| <FONT color="green">113</FONT> Object[] args2={fPullParserConfig};<a name="line.113"></a> |
| <FONT color="green">114</FONT> fIncrementalParser = (SAXParser)ctor.newInstance(args2);<a name="line.114"></a> |
| <FONT color="green">115</FONT> <a name="line.115"></a> |
| <FONT color="green">116</FONT> // Preload all the needed the configuration methods... I want to know they're<a name="line.116"></a> |
| <FONT color="green">117</FONT> // all here before we commit to trying to use them, just in case the<a name="line.117"></a> |
| <FONT color="green">118</FONT> // API changes again.<a name="line.118"></a> |
| <FONT color="green">119</FONT> Class fXniInputSourceClass=ObjectFactory.findProviderClass(<a name="line.119"></a> |
| <FONT color="green">120</FONT> "org.apache.xerces.xni.parser.XMLInputSource",<a name="line.120"></a> |
| <FONT color="green">121</FONT> ObjectFactory.findClassLoader(), true);<a name="line.121"></a> |
| <FONT color="green">122</FONT> Class[] args3={fXniInputSourceClass};<a name="line.122"></a> |
| <FONT color="green">123</FONT> fConfigSetInput=xniStdConfigClass.getMethod("setInputSource",args3);<a name="line.123"></a> |
| <FONT color="green">124</FONT> <a name="line.124"></a> |
| <FONT color="green">125</FONT> Class[] args4={String.class,String.class,String.class};<a name="line.125"></a> |
| <FONT color="green">126</FONT> fConfigInputSourceCtor=fXniInputSourceClass.getConstructor(args4);<a name="line.126"></a> |
| <FONT color="green">127</FONT> Class[] args5={java.io.InputStream.class};<a name="line.127"></a> |
| <FONT color="green">128</FONT> fConfigSetByteStream=fXniInputSourceClass.getMethod("setByteStream",args5);<a name="line.128"></a> |
| <FONT color="green">129</FONT> Class[] args6={java.io.Reader.class};<a name="line.129"></a> |
| <FONT color="green">130</FONT> fConfigSetCharStream=fXniInputSourceClass.getMethod("setCharacterStream",args6);<a name="line.130"></a> |
| <FONT color="green">131</FONT> Class[] args7={String.class};<a name="line.131"></a> |
| <FONT color="green">132</FONT> fConfigSetEncoding=fXniInputSourceClass.getMethod("setEncoding",args7);<a name="line.132"></a> |
| <FONT color="green">133</FONT> <a name="line.133"></a> |
| <FONT color="green">134</FONT> Class[] argsb={Boolean.TYPE};<a name="line.134"></a> |
| <FONT color="green">135</FONT> fConfigParse=xniStdConfigClass.getMethod("parse",argsb); <a name="line.135"></a> |
| <FONT color="green">136</FONT> Class[] noargs=new Class[0];<a name="line.136"></a> |
| <FONT color="green">137</FONT> fReset=fIncrementalParser.getClass().getMethod("reset",noargs);<a name="line.137"></a> |
| <FONT color="green">138</FONT> }<a name="line.138"></a> |
| <FONT color="green">139</FONT> catch(Exception e)<a name="line.139"></a> |
| <FONT color="green">140</FONT> {<a name="line.140"></a> |
| <FONT color="green">141</FONT> // Fallback if this fails (implemented in createIncrementalSAXSource) is<a name="line.141"></a> |
| <FONT color="green">142</FONT> // to attempt Xerces-1 incremental setup. Can't do tail-call in<a name="line.142"></a> |
| <FONT color="green">143</FONT> // constructor, so create new, copy Xerces-1 initialization, <a name="line.143"></a> |
| <FONT color="green">144</FONT> // then throw it away... Ugh.<a name="line.144"></a> |
| <FONT color="green">145</FONT> IncrementalSAXSource_Xerces dummy=new IncrementalSAXSource_Xerces(new SAXParser());<a name="line.145"></a> |
| <FONT color="green">146</FONT> this.fParseSomeSetup=dummy.fParseSomeSetup;<a name="line.146"></a> |
| <FONT color="green">147</FONT> this.fParseSome=dummy.fParseSome;<a name="line.147"></a> |
| <FONT color="green">148</FONT> this.fIncrementalParser=dummy.fIncrementalParser;<a name="line.148"></a> |
| <FONT color="green">149</FONT> }<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> /** Create a IncrementalSAXSource_Xerces wrapped around<a name="line.152"></a> |
| <FONT color="green">153</FONT> * an existing SAXParser. Currently this works only for recent<a name="line.153"></a> |
| <FONT color="green">154</FONT> * releases of Xerces-1. Xerces-2 incremental is currently possible<a name="line.154"></a> |
| <FONT color="green">155</FONT> * only if we are allowed to create the parser instance, due to<a name="line.155"></a> |
| <FONT color="green">156</FONT> * limitations in the API exposed by Xerces-2 Beta 3; see the<a name="line.156"></a> |
| <FONT color="green">157</FONT> * no-args constructor for that code.<a name="line.157"></a> |
| <FONT color="green">158</FONT> * <a name="line.158"></a> |
| <FONT color="green">159</FONT> * @exception if the SAXParser class doesn't support the Xerces<a name="line.159"></a> |
| <FONT color="green">160</FONT> * incremental parse operations. In that case, caller should<a name="line.160"></a> |
| <FONT color="green">161</FONT> * fall back upon the IncrementalSAXSource_Filter approach.<a name="line.161"></a> |
| <FONT color="green">162</FONT> * */<a name="line.162"></a> |
| <FONT color="green">163</FONT> public IncrementalSAXSource_Xerces(SAXParser parser) <a name="line.163"></a> |
| <FONT color="green">164</FONT> throws NoSuchMethodException <a name="line.164"></a> |
| <FONT color="green">165</FONT> {<a name="line.165"></a> |
| <FONT color="green">166</FONT> // Reflection is used to allow us to compile against<a name="line.166"></a> |
| <FONT color="green">167</FONT> // Xerces2. If/when we can abandon the older versions of the parser,<a name="line.167"></a> |
| <FONT color="green">168</FONT> // this constructor will simply have to fail until/unless the<a name="line.168"></a> |
| <FONT color="green">169</FONT> // Xerces2 incremental support is made available on previously<a name="line.169"></a> |
| <FONT color="green">170</FONT> // constructed SAXParser instances.<a name="line.170"></a> |
| <FONT color="green">171</FONT> fIncrementalParser=parser;<a name="line.171"></a> |
| <FONT color="green">172</FONT> Class me=parser.getClass();<a name="line.172"></a> |
| <FONT color="green">173</FONT> Class[] parms={InputSource.class};<a name="line.173"></a> |
| <FONT color="green">174</FONT> fParseSomeSetup=me.getMethod("parseSomeSetup",parms);<a name="line.174"></a> |
| <FONT color="green">175</FONT> parms=new Class[0];<a name="line.175"></a> |
| <FONT color="green">176</FONT> fParseSome=me.getMethod("parseSome",parms);<a name="line.176"></a> |
| <FONT color="green">177</FONT> // Fallback if this fails (implemented in createIncrementalSAXSource) is<a name="line.177"></a> |
| <FONT color="green">178</FONT> // to use IncrementalSAXSource_Filter rather than Xerces-specific code.<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> //<a name="line.181"></a> |
| <FONT color="green">182</FONT> // Factories<a name="line.182"></a> |
| <FONT color="green">183</FONT> //<a name="line.183"></a> |
| <FONT color="green">184</FONT> static public IncrementalSAXSource createIncrementalSAXSource() <a name="line.184"></a> |
| <FONT color="green">185</FONT> {<a name="line.185"></a> |
| <FONT color="green">186</FONT> try<a name="line.186"></a> |
| <FONT color="green">187</FONT> {<a name="line.187"></a> |
| <FONT color="green">188</FONT> return new IncrementalSAXSource_Xerces();<a name="line.188"></a> |
| <FONT color="green">189</FONT> }<a name="line.189"></a> |
| <FONT color="green">190</FONT> catch(NoSuchMethodException e)<a name="line.190"></a> |
| <FONT color="green">191</FONT> {<a name="line.191"></a> |
| <FONT color="green">192</FONT> // Xerces version mismatch; neither Xerces1 nor Xerces2 succeeded.<a name="line.192"></a> |
| <FONT color="green">193</FONT> // Fall back on filtering solution.<a name="line.193"></a> |
| <FONT color="green">194</FONT> IncrementalSAXSource_Filter iss=new IncrementalSAXSource_Filter();<a name="line.194"></a> |
| <FONT color="green">195</FONT> iss.setXMLReader(new SAXParser());<a name="line.195"></a> |
| <FONT color="green">196</FONT> return iss;<a name="line.196"></a> |
| <FONT color="green">197</FONT> }<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> static public IncrementalSAXSource<a name="line.200"></a> |
| <FONT color="green">201</FONT> createIncrementalSAXSource(SAXParser parser) {<a name="line.201"></a> |
| <FONT color="green">202</FONT> try<a name="line.202"></a> |
| <FONT color="green">203</FONT> {<a name="line.203"></a> |
| <FONT color="green">204</FONT> return new IncrementalSAXSource_Xerces(parser);<a name="line.204"></a> |
| <FONT color="green">205</FONT> }<a name="line.205"></a> |
| <FONT color="green">206</FONT> catch(NoSuchMethodException e)<a name="line.206"></a> |
| <FONT color="green">207</FONT> {<a name="line.207"></a> |
| <FONT color="green">208</FONT> // Xerces version mismatch; neither Xerces1 nor Xerces2 succeeded.<a name="line.208"></a> |
| <FONT color="green">209</FONT> // Fall back on filtering solution.<a name="line.209"></a> |
| <FONT color="green">210</FONT> IncrementalSAXSource_Filter iss=new IncrementalSAXSource_Filter();<a name="line.210"></a> |
| <FONT color="green">211</FONT> iss.setXMLReader(parser);<a name="line.211"></a> |
| <FONT color="green">212</FONT> return iss;<a name="line.212"></a> |
| <FONT color="green">213</FONT> }<a name="line.213"></a> |
| <FONT color="green">214</FONT> }<a name="line.214"></a> |
| <FONT color="green">215</FONT> <a name="line.215"></a> |
| <FONT color="green">216</FONT> //<a name="line.216"></a> |
| <FONT color="green">217</FONT> // Public methods<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> // Register handler directly with the incremental parser<a name="line.220"></a> |
| <FONT color="green">221</FONT> public void setContentHandler(org.xml.sax.ContentHandler handler)<a name="line.221"></a> |
| <FONT color="green">222</FONT> {<a name="line.222"></a> |
| <FONT color="green">223</FONT> // Typecast required in Xerces2; SAXParser doesn't inheret XMLReader<a name="line.223"></a> |
| <FONT color="green">224</FONT> // %OPT% Cast at asignment?<a name="line.224"></a> |
| <FONT color="green">225</FONT> ((XMLReader)fIncrementalParser).setContentHandler(handler);<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> // Register handler directly with the incremental parser<a name="line.228"></a> |
| <FONT color="green">229</FONT> public void setLexicalHandler(org.xml.sax.ext.LexicalHandler handler)<a name="line.229"></a> |
| <FONT color="green">230</FONT> {<a name="line.230"></a> |
| <FONT color="green">231</FONT> // Not supported by all SAX2 parsers but should work in Xerces:<a name="line.231"></a> |
| <FONT color="green">232</FONT> try <a name="line.232"></a> |
| <FONT color="green">233</FONT> {<a name="line.233"></a> |
| <FONT color="green">234</FONT> // Typecast required in Xerces2; SAXParser doesn't inheret XMLReader<a name="line.234"></a> |
| <FONT color="green">235</FONT> // %OPT% Cast at asignment?<a name="line.235"></a> |
| <FONT color="green">236</FONT> ((XMLReader)fIncrementalParser).setProperty("http://xml.org/sax/properties/lexical-handler",<a name="line.236"></a> |
| <FONT color="green">237</FONT> handler);<a name="line.237"></a> |
| <FONT color="green">238</FONT> }<a name="line.238"></a> |
| <FONT color="green">239</FONT> catch(org.xml.sax.SAXNotRecognizedException e)<a name="line.239"></a> |
| <FONT color="green">240</FONT> {<a name="line.240"></a> |
| <FONT color="green">241</FONT> // Nothing we can do about it<a name="line.241"></a> |
| <FONT color="green">242</FONT> }<a name="line.242"></a> |
| <FONT color="green">243</FONT> catch(org.xml.sax.SAXNotSupportedException e)<a name="line.243"></a> |
| <FONT color="green">244</FONT> {<a name="line.244"></a> |
| <FONT color="green">245</FONT> // Nothing we can do about it<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> <a name="line.248"></a> |
| <FONT color="green">249</FONT> // Register handler directly with the incremental parser<a name="line.249"></a> |
| <FONT color="green">250</FONT> public void setDTDHandler(org.xml.sax.DTDHandler handler)<a name="line.250"></a> |
| <FONT color="green">251</FONT> {<a name="line.251"></a> |
| <FONT color="green">252</FONT> // Typecast required in Xerces2; SAXParser doesn't inheret XMLReader<a name="line.252"></a> |
| <FONT color="green">253</FONT> // %OPT% Cast at asignment?<a name="line.253"></a> |
| <FONT color="green">254</FONT> ((XMLReader)fIncrementalParser).setDTDHandler(handler);<a name="line.254"></a> |
| <FONT color="green">255</FONT> }<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> /** startParse() is a simple API which tells the IncrementalSAXSource<a name="line.258"></a> |
| <FONT color="green">259</FONT> * to begin reading a document.<a name="line.259"></a> |
| <FONT color="green">260</FONT> *<a name="line.260"></a> |
| <FONT color="green">261</FONT> * @throws SAXException is parse thread is already in progress<a name="line.261"></a> |
| <FONT color="green">262</FONT> * or parsing can not be started.<a name="line.262"></a> |
| <FONT color="green">263</FONT> * */<a name="line.263"></a> |
| <FONT color="green">264</FONT> public void startParse(InputSource source) throws SAXException<a name="line.264"></a> |
| <FONT color="green">265</FONT> {<a name="line.265"></a> |
| <FONT color="green">266</FONT> if (fIncrementalParser==null)<a name="line.266"></a> |
| <FONT color="green">267</FONT> throw new SAXException(XMLMessages.createXMLMessage(XMLErrorResources.ER_STARTPARSE_NEEDS_SAXPARSER, null)); //"startParse needs a non-null SAXParser.");<a name="line.267"></a> |
| <FONT color="green">268</FONT> if (fParseInProgress)<a name="line.268"></a> |
| <FONT color="green">269</FONT> throw new SAXException(XMLMessages.createXMLMessage(XMLErrorResources.ER_STARTPARSE_WHILE_PARSING, null)); //"startParse may not be called while parsing.");<a name="line.269"></a> |
| <FONT color="green">270</FONT> <a name="line.270"></a> |
| <FONT color="green">271</FONT> boolean ok=false;<a name="line.271"></a> |
| <FONT color="green">272</FONT> <a name="line.272"></a> |
| <FONT color="green">273</FONT> try<a name="line.273"></a> |
| <FONT color="green">274</FONT> {<a name="line.274"></a> |
| <FONT color="green">275</FONT> ok = parseSomeSetup(source);<a name="line.275"></a> |
| <FONT color="green">276</FONT> }<a name="line.276"></a> |
| <FONT color="green">277</FONT> catch(Exception ex)<a name="line.277"></a> |
| <FONT color="green">278</FONT> {<a name="line.278"></a> |
| <FONT color="green">279</FONT> throw new SAXException(ex);<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> if(!ok)<a name="line.282"></a> |
| <FONT color="green">283</FONT> throw new SAXException(XMLMessages.createXMLMessage(XMLErrorResources.ER_COULD_NOT_INIT_PARSER, null)); //"could not initialize parser with");<a name="line.283"></a> |
| <FONT color="green">284</FONT> }<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> /** deliverMoreNodes() is a simple API which tells the coroutine<a name="line.287"></a> |
| <FONT color="green">288</FONT> * parser that we need more nodes. This is intended to be called<a name="line.288"></a> |
| <FONT color="green">289</FONT> * from one of our partner routines, and serves to encapsulate the<a name="line.289"></a> |
| <FONT color="green">290</FONT> * details of how incremental parsing has been achieved.<a name="line.290"></a> |
| <FONT color="green">291</FONT> *<a name="line.291"></a> |
| <FONT color="green">292</FONT> * @param parsemore If true, tells the incremental parser to generate<a name="line.292"></a> |
| <FONT color="green">293</FONT> * another chunk of output. If false, tells the parser that we're<a name="line.293"></a> |
| <FONT color="green">294</FONT> * satisfied and it can terminate parsing of this document.<a name="line.294"></a> |
| <FONT color="green">295</FONT> * @return Boolean.TRUE if the CoroutineParser believes more data may be available<a name="line.295"></a> |
| <FONT color="green">296</FONT> * for further parsing. Boolean.FALSE if parsing ran to completion.<a name="line.296"></a> |
| <FONT color="green">297</FONT> * Exception if the parser objected for some reason.<a name="line.297"></a> |
| <FONT color="green">298</FONT> * */<a name="line.298"></a> |
| <FONT color="green">299</FONT> public Object deliverMoreNodes (boolean parsemore)<a name="line.299"></a> |
| <FONT color="green">300</FONT> {<a name="line.300"></a> |
| <FONT color="green">301</FONT> if(!parsemore)<a name="line.301"></a> |
| <FONT color="green">302</FONT> {<a name="line.302"></a> |
| <FONT color="green">303</FONT> fParseInProgress=false;<a name="line.303"></a> |
| <FONT color="green">304</FONT> return Boolean.FALSE;<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> Object arg;<a name="line.307"></a> |
| <FONT color="green">308</FONT> try {<a name="line.308"></a> |
| <FONT color="green">309</FONT> boolean keepgoing = parseSome();<a name="line.309"></a> |
| <FONT color="green">310</FONT> arg = keepgoing ? Boolean.TRUE : Boolean.FALSE;<a name="line.310"></a> |
| <FONT color="green">311</FONT> } catch (SAXException ex) {<a name="line.311"></a> |
| <FONT color="green">312</FONT> arg = ex;<a name="line.312"></a> |
| <FONT color="green">313</FONT> } catch (IOException ex) {<a name="line.313"></a> |
| <FONT color="green">314</FONT> arg = ex;<a name="line.314"></a> |
| <FONT color="green">315</FONT> } catch (Exception ex) {<a name="line.315"></a> |
| <FONT color="green">316</FONT> arg = new SAXException(ex);<a name="line.316"></a> |
| <FONT color="green">317</FONT> }<a name="line.317"></a> |
| <FONT color="green">318</FONT> return arg;<a name="line.318"></a> |
| <FONT color="green">319</FONT> }<a name="line.319"></a> |
| <FONT color="green">320</FONT> <a name="line.320"></a> |
| <FONT color="green">321</FONT> // Private methods -- conveniences to hide the reflection details<a name="line.321"></a> |
| <FONT color="green">322</FONT> private boolean parseSomeSetup(InputSource source) <a name="line.322"></a> |
| <FONT color="green">323</FONT> throws SAXException, IOException, IllegalAccessException, <a name="line.323"></a> |
| <FONT color="green">324</FONT> java.lang.reflect.InvocationTargetException,<a name="line.324"></a> |
| <FONT color="green">325</FONT> java.lang.InstantiationException<a name="line.325"></a> |
| <FONT color="green">326</FONT> {<a name="line.326"></a> |
| <FONT color="green">327</FONT> if(fConfigSetInput!=null)<a name="line.327"></a> |
| <FONT color="green">328</FONT> {<a name="line.328"></a> |
| <FONT color="green">329</FONT> // Obtain input from SAX inputSource object, construct XNI version of<a name="line.329"></a> |
| <FONT color="green">330</FONT> // that object. Logic adapted from Xerces2.<a name="line.330"></a> |
| <FONT color="green">331</FONT> Object[] parms1={source.getPublicId(),source.getSystemId(),null};<a name="line.331"></a> |
| <FONT color="green">332</FONT> Object xmlsource=fConfigInputSourceCtor.newInstance(parms1);<a name="line.332"></a> |
| <FONT color="green">333</FONT> Object[] parmsa={source.getByteStream()};<a name="line.333"></a> |
| <FONT color="green">334</FONT> fConfigSetByteStream.invoke(xmlsource,parmsa);<a name="line.334"></a> |
| <FONT color="green">335</FONT> parmsa[0]=source.getCharacterStream();<a name="line.335"></a> |
| <FONT color="green">336</FONT> fConfigSetCharStream.invoke(xmlsource,parmsa);<a name="line.336"></a> |
| <FONT color="green">337</FONT> parmsa[0]=source.getEncoding();<a name="line.337"></a> |
| <FONT color="green">338</FONT> fConfigSetEncoding.invoke(xmlsource,parmsa);<a name="line.338"></a> |
| <FONT color="green">339</FONT> <a name="line.339"></a> |
| <FONT color="green">340</FONT> // Bugzilla5272 patch suggested by Sandy Gao.<a name="line.340"></a> |
| <FONT color="green">341</FONT> // Has to be reflection to run with Xerces2<a name="line.341"></a> |
| <FONT color="green">342</FONT> // after compilation against Xerces1. or vice<a name="line.342"></a> |
| <FONT color="green">343</FONT> // versa, due to return type mismatches.<a name="line.343"></a> |
| <FONT color="green">344</FONT> Object[] noparms=new Object[0];<a name="line.344"></a> |
| <FONT color="green">345</FONT> fReset.invoke(fIncrementalParser,noparms);<a name="line.345"></a> |
| <FONT color="green">346</FONT> <a name="line.346"></a> |
| <FONT color="green">347</FONT> parmsa[0]=xmlsource;<a name="line.347"></a> |
| <FONT color="green">348</FONT> fConfigSetInput.invoke(fPullParserConfig,parmsa);<a name="line.348"></a> |
| <FONT color="green">349</FONT> <a name="line.349"></a> |
| <FONT color="green">350</FONT> // %REVIEW% Do first pull. Should we instead just return true?<a name="line.350"></a> |
| <FONT color="green">351</FONT> return parseSome();<a name="line.351"></a> |
| <FONT color="green">352</FONT> }<a name="line.352"></a> |
| <FONT color="green">353</FONT> else<a name="line.353"></a> |
| <FONT color="green">354</FONT> {<a name="line.354"></a> |
| <FONT color="green">355</FONT> Object[] parm={source};<a name="line.355"></a> |
| <FONT color="green">356</FONT> Object ret=fParseSomeSetup.invoke(fIncrementalParser,parm);<a name="line.356"></a> |
| <FONT color="green">357</FONT> return ((Boolean)ret).booleanValue();<a name="line.357"></a> |
| <FONT color="green">358</FONT> }<a name="line.358"></a> |
| <FONT color="green">359</FONT> }<a name="line.359"></a> |
| <FONT color="green">360</FONT> // Would null work???<a name="line.360"></a> |
| <FONT color="green">361</FONT> private static final Object[] noparms=new Object[0];<a name="line.361"></a> |
| <FONT color="green">362</FONT> private static final Object[] parmsfalse={Boolean.FALSE};<a name="line.362"></a> |
| <FONT color="green">363</FONT> private boolean parseSome()<a name="line.363"></a> |
| <FONT color="green">364</FONT> throws SAXException, IOException, IllegalAccessException,<a name="line.364"></a> |
| <FONT color="green">365</FONT> java.lang.reflect.InvocationTargetException<a name="line.365"></a> |
| <FONT color="green">366</FONT> {<a name="line.366"></a> |
| <FONT color="green">367</FONT> // Take next parsing step, return false iff parsing complete:<a name="line.367"></a> |
| <FONT color="green">368</FONT> if(fConfigSetInput!=null)<a name="line.368"></a> |
| <FONT color="green">369</FONT> {<a name="line.369"></a> |
| <FONT color="green">370</FONT> Object ret=(Boolean)(fConfigParse.invoke(fPullParserConfig,parmsfalse));<a name="line.370"></a> |
| <FONT color="green">371</FONT> return ((Boolean)ret).booleanValue();<a name="line.371"></a> |
| <FONT color="green">372</FONT> }<a name="line.372"></a> |
| <FONT color="green">373</FONT> else<a name="line.373"></a> |
| <FONT color="green">374</FONT> {<a name="line.374"></a> |
| <FONT color="green">375</FONT> Object ret=fParseSome.invoke(fIncrementalParser,noparms);<a name="line.375"></a> |
| <FONT color="green">376</FONT> return ((Boolean)ret).booleanValue();<a name="line.376"></a> |
| <FONT color="green">377</FONT> }<a name="line.377"></a> |
| <FONT color="green">378</FONT> }<a name="line.378"></a> |
| <FONT color="green">379</FONT> <a name="line.379"></a> |
| <FONT color="green">380</FONT> <a name="line.380"></a> |
| <FONT color="green">381</FONT> //================================================================<a name="line.381"></a> |
| <FONT color="green">382</FONT> /** Simple unit test. Attempt coroutine parsing of document indicated<a name="line.382"></a> |
| <FONT color="green">383</FONT> * by first argument (as a URI), report progress.<a name="line.383"></a> |
| <FONT color="green">384</FONT> */<a name="line.384"></a> |
| <FONT color="green">385</FONT> public static void main(String args[])<a name="line.385"></a> |
| <FONT color="green">386</FONT> {<a name="line.386"></a> |
| <FONT color="green">387</FONT> System.out.println("Starting...");<a name="line.387"></a> |
| <FONT color="green">388</FONT> <a name="line.388"></a> |
| <FONT color="green">389</FONT> CoroutineManager co = new CoroutineManager();<a name="line.389"></a> |
| <FONT color="green">390</FONT> int appCoroutineID = co.co_joinCoroutineSet(-1);<a name="line.390"></a> |
| <FONT color="green">391</FONT> if (appCoroutineID == -1)<a name="line.391"></a> |
| <FONT color="green">392</FONT> {<a name="line.392"></a> |
| <FONT color="green">393</FONT> System.out.println("ERROR: Couldn't allocate coroutine number.\n");<a name="line.393"></a> |
| <FONT color="green">394</FONT> return;<a name="line.394"></a> |
| <FONT color="green">395</FONT> }<a name="line.395"></a> |
| <FONT color="green">396</FONT> IncrementalSAXSource parser=<a name="line.396"></a> |
| <FONT color="green">397</FONT> createIncrementalSAXSource();<a name="line.397"></a> |
| <FONT color="green">398</FONT> <a name="line.398"></a> |
| <FONT color="green">399</FONT> // Use a serializer as our sample output<a name="line.399"></a> |
| <FONT color="green">400</FONT> org.apache.xml.serialize.XMLSerializer trace;<a name="line.400"></a> |
| <FONT color="green">401</FONT> trace=new org.apache.xml.serialize.XMLSerializer(System.out,null);<a name="line.401"></a> |
| <FONT color="green">402</FONT> parser.setContentHandler(trace);<a name="line.402"></a> |
| <FONT color="green">403</FONT> parser.setLexicalHandler(trace);<a name="line.403"></a> |
| <FONT color="green">404</FONT> <a name="line.404"></a> |
| <FONT color="green">405</FONT> // Tell coroutine to begin parsing, run while parsing is in progress<a name="line.405"></a> |
| <FONT color="green">406</FONT> <a name="line.406"></a> |
| <FONT color="green">407</FONT> for(int arg=0;arg<args.length;++arg)<a name="line.407"></a> |
| <FONT color="green">408</FONT> {<a name="line.408"></a> |
| <FONT color="green">409</FONT> try<a name="line.409"></a> |
| <FONT color="green">410</FONT> {<a name="line.410"></a> |
| <FONT color="green">411</FONT> InputSource source = new InputSource(args[arg]);<a name="line.411"></a> |
| <FONT color="green">412</FONT> Object result=null;<a name="line.412"></a> |
| <FONT color="green">413</FONT> boolean more=true;<a name="line.413"></a> |
| <FONT color="green">414</FONT> parser.startParse(source);<a name="line.414"></a> |
| <FONT color="green">415</FONT> for(result = parser.deliverMoreNodes(more);<a name="line.415"></a> |
| <FONT color="green">416</FONT> result==Boolean.TRUE;<a name="line.416"></a> |
| <FONT color="green">417</FONT> result = parser.deliverMoreNodes(more))<a name="line.417"></a> |
| <FONT color="green">418</FONT> {<a name="line.418"></a> |
| <FONT color="green">419</FONT> System.out.println("\nSome parsing successful, trying more.\n");<a name="line.419"></a> |
| <FONT color="green">420</FONT> <a name="line.420"></a> |
| <FONT color="green">421</FONT> // Special test: Terminate parsing early.<a name="line.421"></a> |
| <FONT color="green">422</FONT> if(arg+1<args.length && "!".equals(args[arg+1]))<a name="line.422"></a> |
| <FONT color="green">423</FONT> {<a name="line.423"></a> |
| <FONT color="green">424</FONT> ++arg;<a name="line.424"></a> |
| <FONT color="green">425</FONT> more=false;<a name="line.425"></a> |
| <FONT color="green">426</FONT> }<a name="line.426"></a> |
| <FONT color="green">427</FONT> <a name="line.427"></a> |
| <FONT color="green">428</FONT> }<a name="line.428"></a> |
| <FONT color="green">429</FONT> <a name="line.429"></a> |
| <FONT color="green">430</FONT> if (result instanceof Boolean && ((Boolean)result)==Boolean.FALSE)<a name="line.430"></a> |
| <FONT color="green">431</FONT> {<a name="line.431"></a> |
| <FONT color="green">432</FONT> System.out.println("\nParser ended (EOF or on request).\n");<a name="line.432"></a> |
| <FONT color="green">433</FONT> }<a name="line.433"></a> |
| <FONT color="green">434</FONT> else if (result == null) {<a name="line.434"></a> |
| <FONT color="green">435</FONT> System.out.println("\nUNEXPECTED: Parser says shut down prematurely.\n");<a name="line.435"></a> |
| <FONT color="green">436</FONT> }<a name="line.436"></a> |
| <FONT color="green">437</FONT> else if (result instanceof Exception) {<a name="line.437"></a> |
| <FONT color="green">438</FONT> throw new org.apache.xml.utils.WrappedRuntimeException((Exception)result);<a name="line.438"></a> |
| <FONT color="green">439</FONT> // System.out.println("\nParser threw exception:");<a name="line.439"></a> |
| <FONT color="green">440</FONT> // ((Exception)result).printStackTrace();<a name="line.440"></a> |
| <FONT color="green">441</FONT> }<a name="line.441"></a> |
| <FONT color="green">442</FONT> <a name="line.442"></a> |
| <FONT color="green">443</FONT> }<a name="line.443"></a> |
| <FONT color="green">444</FONT> <a name="line.444"></a> |
| <FONT color="green">445</FONT> catch(SAXException e)<a name="line.445"></a> |
| <FONT color="green">446</FONT> {<a name="line.446"></a> |
| <FONT color="green">447</FONT> e.printStackTrace();<a name="line.447"></a> |
| <FONT color="green">448</FONT> }<a name="line.448"></a> |
| <FONT color="green">449</FONT> }<a name="line.449"></a> |
| <FONT color="green">450</FONT> <a name="line.450"></a> |
| <FONT color="green">451</FONT> }<a name="line.451"></a> |
| <FONT color="green">452</FONT> <a name="line.452"></a> |
| <FONT color="green">453</FONT> <a name="line.453"></a> |
| <FONT color="green">454</FONT> } // class IncrementalSAXSource_Xerces<a name="line.454"></a> |
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