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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: UnionPathIterator.java 469314 2006-10-30 23:31:59Z minchau $<a name="line.19"></a> |
| <FONT color="green">020</FONT> */<a name="line.20"></a> |
| <FONT color="green">021</FONT> package org.apache.xpath.axes;<a name="line.21"></a> |
| <FONT color="green">022</FONT> <a name="line.22"></a> |
| <FONT color="green">023</FONT> import org.apache.xml.dtm.Axis;<a name="line.23"></a> |
| <FONT color="green">024</FONT> import org.apache.xml.dtm.DTM;<a name="line.24"></a> |
| <FONT color="green">025</FONT> import org.apache.xml.dtm.DTMIterator;<a name="line.25"></a> |
| <FONT color="green">026</FONT> import org.apache.xpath.Expression;<a name="line.26"></a> |
| <FONT color="green">027</FONT> import org.apache.xpath.ExpressionOwner;<a name="line.27"></a> |
| <FONT color="green">028</FONT> import org.apache.xpath.XPathVisitor;<a name="line.28"></a> |
| <FONT color="green">029</FONT> import org.apache.xpath.compiler.Compiler;<a name="line.29"></a> |
| <FONT color="green">030</FONT> import org.apache.xpath.compiler.OpCodes;<a name="line.30"></a> |
| <FONT color="green">031</FONT> import org.apache.xpath.compiler.OpMap;<a name="line.31"></a> |
| <FONT color="green">032</FONT> <a name="line.32"></a> |
| <FONT color="green">033</FONT> /**<a name="line.33"></a> |
| <FONT color="green">034</FONT> * This class extends NodeSetDTM, which implements DTMIterator,<a name="line.34"></a> |
| <FONT color="green">035</FONT> * and fetches nodes one at a time in document order based on a XPath<a name="line.35"></a> |
| <FONT color="green">036</FONT> * <a href="http://www.w3.org/TR/xpath#NT-UnionExpr">UnionExpr</a>.<a name="line.36"></a> |
| <FONT color="green">037</FONT> * As each node is iterated via nextNode(), the node is also stored<a name="line.37"></a> |
| <FONT color="green">038</FONT> * in the NodeVector, so that previousNode() can easily be done.<a name="line.38"></a> |
| <FONT color="green">039</FONT> * @xsl.usage advanced<a name="line.39"></a> |
| <FONT color="green">040</FONT> */<a name="line.40"></a> |
| <FONT color="green">041</FONT> public class UnionPathIterator extends LocPathIterator<a name="line.41"></a> |
| <FONT color="green">042</FONT> implements Cloneable, DTMIterator, java.io.Serializable, PathComponent<a name="line.42"></a> |
| <FONT color="green">043</FONT> {<a name="line.43"></a> |
| <FONT color="green">044</FONT> static final long serialVersionUID = -3910351546843826781L;<a name="line.44"></a> |
| <FONT color="green">045</FONT> <a name="line.45"></a> |
| <FONT color="green">046</FONT> /**<a name="line.46"></a> |
| <FONT color="green">047</FONT> * Constructor to create an instance which you can add location paths to.<a name="line.47"></a> |
| <FONT color="green">048</FONT> */<a name="line.48"></a> |
| <FONT color="green">049</FONT> public UnionPathIterator()<a name="line.49"></a> |
| <FONT color="green">050</FONT> {<a name="line.50"></a> |
| <FONT color="green">051</FONT> <a name="line.51"></a> |
| <FONT color="green">052</FONT> super();<a name="line.52"></a> |
| <FONT color="green">053</FONT> <a name="line.53"></a> |
| <FONT color="green">054</FONT> // m_mutable = false;<a name="line.54"></a> |
| <FONT color="green">055</FONT> // m_cacheNodes = false;<a name="line.55"></a> |
| <FONT color="green">056</FONT> m_iterators = null;<a name="line.56"></a> |
| <FONT color="green">057</FONT> m_exprs = null;<a name="line.57"></a> |
| <FONT color="green">058</FONT> }<a name="line.58"></a> |
| <FONT color="green">059</FONT> <a name="line.59"></a> |
| <FONT color="green">060</FONT> /**<a name="line.60"></a> |
| <FONT color="green">061</FONT> * Initialize the context values for this expression <a name="line.61"></a> |
| <FONT color="green">062</FONT> * after it is cloned.<a name="line.62"></a> |
| <FONT color="green">063</FONT> *<a name="line.63"></a> |
| <FONT color="green">064</FONT> * @param context The XPath runtime context for this <a name="line.64"></a> |
| <FONT color="green">065</FONT> * transformation.<a name="line.65"></a> |
| <FONT color="green">066</FONT> */<a name="line.66"></a> |
| <FONT color="green">067</FONT> public void setRoot(int context, Object environment)<a name="line.67"></a> |
| <FONT color="green">068</FONT> {<a name="line.68"></a> |
| <FONT color="green">069</FONT> super.setRoot(context, environment);<a name="line.69"></a> |
| <FONT color="green">070</FONT> <a name="line.70"></a> |
| <FONT color="green">071</FONT> try<a name="line.71"></a> |
| <FONT color="green">072</FONT> {<a name="line.72"></a> |
| <FONT color="green">073</FONT> if (null != m_exprs)<a name="line.73"></a> |
| <FONT color="green">074</FONT> {<a name="line.74"></a> |
| <FONT color="green">075</FONT> int n = m_exprs.length;<a name="line.75"></a> |
| <FONT color="green">076</FONT> DTMIterator newIters[] = new DTMIterator[n];<a name="line.76"></a> |
| <FONT color="green">077</FONT> <a name="line.77"></a> |
| <FONT color="green">078</FONT> for (int i = 0; i < n; i++)<a name="line.78"></a> |
| <FONT color="green">079</FONT> {<a name="line.79"></a> |
| <FONT color="green">080</FONT> DTMIterator iter = m_exprs[i].asIterator(m_execContext, context);<a name="line.80"></a> |
| <FONT color="green">081</FONT> newIters[i] = iter;<a name="line.81"></a> |
| <FONT color="green">082</FONT> iter.nextNode();<a name="line.82"></a> |
| <FONT color="green">083</FONT> }<a name="line.83"></a> |
| <FONT color="green">084</FONT> m_iterators = newIters;<a name="line.84"></a> |
| <FONT color="green">085</FONT> }<a name="line.85"></a> |
| <FONT color="green">086</FONT> }<a name="line.86"></a> |
| <FONT color="green">087</FONT> catch(Exception e)<a name="line.87"></a> |
| <FONT color="green">088</FONT> {<a name="line.88"></a> |
| <FONT color="green">089</FONT> throw new org.apache.xml.utils.WrappedRuntimeException(e);<a name="line.89"></a> |
| <FONT color="green">090</FONT> }<a name="line.90"></a> |
| <FONT color="green">091</FONT> }<a name="line.91"></a> |
| <FONT color="green">092</FONT> <a name="line.92"></a> |
| <FONT color="green">093</FONT> /**<a name="line.93"></a> |
| <FONT color="green">094</FONT> * Add an iterator to the union list.<a name="line.94"></a> |
| <FONT color="green">095</FONT> *<a name="line.95"></a> |
| <FONT color="green">096</FONT> * @param expr non-null reference to a location path iterator.<a name="line.96"></a> |
| <FONT color="green">097</FONT> */<a name="line.97"></a> |
| <FONT color="green">098</FONT> public void addIterator(DTMIterator expr)<a name="line.98"></a> |
| <FONT color="green">099</FONT> {<a name="line.99"></a> |
| <FONT color="green">100</FONT> <a name="line.100"></a> |
| <FONT color="green">101</FONT> // Increase array size by only 1 at a time. Fix this<a name="line.101"></a> |
| <FONT color="green">102</FONT> // if it looks to be a problem.<a name="line.102"></a> |
| <FONT color="green">103</FONT> if (null == m_iterators)<a name="line.103"></a> |
| <FONT color="green">104</FONT> {<a name="line.104"></a> |
| <FONT color="green">105</FONT> m_iterators = new DTMIterator[1];<a name="line.105"></a> |
| <FONT color="green">106</FONT> m_iterators[0] = expr;<a name="line.106"></a> |
| <FONT color="green">107</FONT> }<a name="line.107"></a> |
| <FONT color="green">108</FONT> else<a name="line.108"></a> |
| <FONT color="green">109</FONT> {<a name="line.109"></a> |
| <FONT color="green">110</FONT> DTMIterator[] exprs = m_iterators;<a name="line.110"></a> |
| <FONT color="green">111</FONT> int len = m_iterators.length;<a name="line.111"></a> |
| <FONT color="green">112</FONT> <a name="line.112"></a> |
| <FONT color="green">113</FONT> m_iterators = new DTMIterator[len + 1];<a name="line.113"></a> |
| <FONT color="green">114</FONT> <a name="line.114"></a> |
| <FONT color="green">115</FONT> System.arraycopy(exprs, 0, m_iterators, 0, len);<a name="line.115"></a> |
| <FONT color="green">116</FONT> <a name="line.116"></a> |
| <FONT color="green">117</FONT> m_iterators[len] = expr;<a name="line.117"></a> |
| <FONT color="green">118</FONT> }<a name="line.118"></a> |
| <FONT color="green">119</FONT> expr.nextNode();<a name="line.119"></a> |
| <FONT color="green">120</FONT> if(expr instanceof Expression)<a name="line.120"></a> |
| <FONT color="green">121</FONT> ((Expression)expr).exprSetParent(this);<a name="line.121"></a> |
| <FONT color="green">122</FONT> }<a name="line.122"></a> |
| <FONT color="green">123</FONT> <a name="line.123"></a> |
| <FONT color="green">124</FONT> /**<a name="line.124"></a> |
| <FONT color="green">125</FONT> * Detaches the iterator from the set which it iterated over, releasing<a name="line.125"></a> |
| <FONT color="green">126</FONT> * any computational resources and placing the iterator in the INVALID<a name="line.126"></a> |
| <FONT color="green">127</FONT> * state. After<code>detach</code> has been invoked, calls to<a name="line.127"></a> |
| <FONT color="green">128</FONT> * <code>nextNode</code> or<code>previousNode</code> will raise the<a name="line.128"></a> |
| <FONT color="green">129</FONT> * exception INVALID_STATE_ERR.<a name="line.129"></a> |
| <FONT color="green">130</FONT> */<a name="line.130"></a> |
| <FONT color="green">131</FONT> public void detach()<a name="line.131"></a> |
| <FONT color="green">132</FONT> {<a name="line.132"></a> |
| <FONT color="green">133</FONT> if(m_allowDetach && null != m_iterators){ <a name="line.133"></a> |
| <FONT color="green">134</FONT> int n = m_iterators.length;<a name="line.134"></a> |
| <FONT color="green">135</FONT> for(int i = 0; i < n; i++)<a name="line.135"></a> |
| <FONT color="green">136</FONT> {<a name="line.136"></a> |
| <FONT color="green">137</FONT> m_iterators[i].detach();<a name="line.137"></a> |
| <FONT color="green">138</FONT> }<a name="line.138"></a> |
| <FONT color="green">139</FONT> m_iterators = null; <a name="line.139"></a> |
| <FONT color="green">140</FONT> }<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> <a name="line.143"></a> |
| <FONT color="green">144</FONT> /**<a name="line.144"></a> |
| <FONT color="green">145</FONT> * Create a UnionPathIterator object, including creation <a name="line.145"></a> |
| <FONT color="green">146</FONT> * of location path iterators from the opcode list, and call back <a name="line.146"></a> |
| <FONT color="green">147</FONT> * into the Compiler to create predicate expressions.<a name="line.147"></a> |
| <FONT color="green">148</FONT> *<a name="line.148"></a> |
| <FONT color="green">149</FONT> * @param compiler The Compiler which is creating <a name="line.149"></a> |
| <FONT color="green">150</FONT> * this expression.<a name="line.150"></a> |
| <FONT color="green">151</FONT> * @param opPos The position of this iterator in the <a name="line.151"></a> |
| <FONT color="green">152</FONT> * opcode list from the compiler.<a name="line.152"></a> |
| <FONT color="green">153</FONT> *<a name="line.153"></a> |
| <FONT color="green">154</FONT> * @throws javax.xml.transform.TransformerException<a name="line.154"></a> |
| <FONT color="green">155</FONT> */<a name="line.155"></a> |
| <FONT color="green">156</FONT> public UnionPathIterator(Compiler compiler, int opPos)<a name="line.156"></a> |
| <FONT color="green">157</FONT> throws javax.xml.transform.TransformerException<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> super();<a name="line.160"></a> |
| <FONT color="green">161</FONT> <a name="line.161"></a> |
| <FONT color="green">162</FONT> opPos = OpMap.getFirstChildPos(opPos);<a name="line.162"></a> |
| <FONT color="green">163</FONT> <a name="line.163"></a> |
| <FONT color="green">164</FONT> loadLocationPaths(compiler, opPos, 0);<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> /**<a name="line.167"></a> |
| <FONT color="green">168</FONT> * This will return an iterator capable of handling the union of paths given.<a name="line.168"></a> |
| <FONT color="green">169</FONT> * <a name="line.169"></a> |
| <FONT color="green">170</FONT> * @param compiler The Compiler which is creating <a name="line.170"></a> |
| <FONT color="green">171</FONT> * this expression.<a name="line.171"></a> |
| <FONT color="green">172</FONT> * @param opPos The position of this iterator in the <a name="line.172"></a> |
| <FONT color="green">173</FONT> * opcode list from the compiler.<a name="line.173"></a> |
| <FONT color="green">174</FONT> * <a name="line.174"></a> |
| <FONT color="green">175</FONT> * @return Object that is derived from LocPathIterator.<a name="line.175"></a> |
| <FONT color="green">176</FONT> *<a name="line.176"></a> |
| <FONT color="green">177</FONT> * @throws javax.xml.transform.TransformerException<a name="line.177"></a> |
| <FONT color="green">178</FONT> */<a name="line.178"></a> |
| <FONT color="green">179</FONT> public static LocPathIterator createUnionIterator(Compiler compiler, int opPos)<a name="line.179"></a> |
| <FONT color="green">180</FONT> throws javax.xml.transform.TransformerException<a name="line.180"></a> |
| <FONT color="green">181</FONT> {<a name="line.181"></a> |
| <FONT color="green">182</FONT> // For the moment, I'm going to first create a full UnionPathIterator, and <a name="line.182"></a> |
| <FONT color="green">183</FONT> // then see if I can reduce it to a UnionChildIterator. It would obviously <a name="line.183"></a> |
| <FONT color="green">184</FONT> // be more effecient to just test for the conditions for a UnionChildIterator, <a name="line.184"></a> |
| <FONT color="green">185</FONT> // and then create that directly.<a name="line.185"></a> |
| <FONT color="green">186</FONT> UnionPathIterator upi = new UnionPathIterator(compiler, opPos);<a name="line.186"></a> |
| <FONT color="green">187</FONT> int nPaths = upi.m_exprs.length;<a name="line.187"></a> |
| <FONT color="green">188</FONT> boolean isAllChildIterators = true;<a name="line.188"></a> |
| <FONT color="green">189</FONT> for(int i = 0; i < nPaths; i++)<a name="line.189"></a> |
| <FONT color="green">190</FONT> {<a name="line.190"></a> |
| <FONT color="green">191</FONT> LocPathIterator lpi = upi.m_exprs[i];<a name="line.191"></a> |
| <FONT color="green">192</FONT> <a name="line.192"></a> |
| <FONT color="green">193</FONT> if(lpi.getAxis() != Axis.CHILD)<a name="line.193"></a> |
| <FONT color="green">194</FONT> {<a name="line.194"></a> |
| <FONT color="green">195</FONT> isAllChildIterators = false;<a name="line.195"></a> |
| <FONT color="green">196</FONT> break;<a name="line.196"></a> |
| <FONT color="green">197</FONT> }<a name="line.197"></a> |
| <FONT color="green">198</FONT> else<a name="line.198"></a> |
| <FONT color="green">199</FONT> {<a name="line.199"></a> |
| <FONT color="green">200</FONT> // check for positional predicates or position function, which won't work.<a name="line.200"></a> |
| <FONT color="green">201</FONT> if(HasPositionalPredChecker.check(lpi))<a name="line.201"></a> |
| <FONT color="green">202</FONT> {<a name="line.202"></a> |
| <FONT color="green">203</FONT> isAllChildIterators = false;<a name="line.203"></a> |
| <FONT color="green">204</FONT> break;<a name="line.204"></a> |
| <FONT color="green">205</FONT> }<a name="line.205"></a> |
| <FONT color="green">206</FONT> }<a name="line.206"></a> |
| <FONT color="green">207</FONT> }<a name="line.207"></a> |
| <FONT color="green">208</FONT> if(isAllChildIterators)<a name="line.208"></a> |
| <FONT color="green">209</FONT> {<a name="line.209"></a> |
| <FONT color="green">210</FONT> UnionChildIterator uci = new UnionChildIterator();<a name="line.210"></a> |
| <FONT color="green">211</FONT> <a name="line.211"></a> |
| <FONT color="green">212</FONT> for(int i = 0; i < nPaths; i++)<a name="line.212"></a> |
| <FONT color="green">213</FONT> {<a name="line.213"></a> |
| <FONT color="green">214</FONT> PredicatedNodeTest lpi = upi.m_exprs[i];<a name="line.214"></a> |
| <FONT color="green">215</FONT> // I could strip the lpi down to a pure PredicatedNodeTest, but <a name="line.215"></a> |
| <FONT color="green">216</FONT> // I don't think it's worth it. Note that the test can be used <a name="line.216"></a> |
| <FONT color="green">217</FONT> // as a static object... so it doesn't have to be cloned.<a name="line.217"></a> |
| <FONT color="green">218</FONT> uci.addNodeTest(lpi);<a name="line.218"></a> |
| <FONT color="green">219</FONT> }<a name="line.219"></a> |
| <FONT color="green">220</FONT> return uci;<a name="line.220"></a> |
| <FONT color="green">221</FONT> <a name="line.221"></a> |
| <FONT color="green">222</FONT> }<a name="line.222"></a> |
| <FONT color="green">223</FONT> else<a name="line.223"></a> |
| <FONT color="green">224</FONT> return upi;<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> * Get the analysis bits for this walker, as defined in the WalkerFactory.<a name="line.228"></a> |
| <FONT color="green">229</FONT> * @return One of WalkerFactory#BIT_DESCENDANT, etc.<a name="line.229"></a> |
| <FONT color="green">230</FONT> */<a name="line.230"></a> |
| <FONT color="green">231</FONT> public int getAnalysisBits()<a name="line.231"></a> |
| <FONT color="green">232</FONT> {<a name="line.232"></a> |
| <FONT color="green">233</FONT> int bits = 0;<a name="line.233"></a> |
| <FONT color="green">234</FONT> <a name="line.234"></a> |
| <FONT color="green">235</FONT> if (m_exprs != null)<a name="line.235"></a> |
| <FONT color="green">236</FONT> {<a name="line.236"></a> |
| <FONT color="green">237</FONT> int n = m_exprs.length;<a name="line.237"></a> |
| <FONT color="green">238</FONT> <a name="line.238"></a> |
| <FONT color="green">239</FONT> for (int i = 0; i < n; i++)<a name="line.239"></a> |
| <FONT color="green">240</FONT> {<a name="line.240"></a> |
| <FONT color="green">241</FONT> int bit = m_exprs[i].getAnalysisBits();<a name="line.241"></a> |
| <FONT color="green">242</FONT> bits |= bit;<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> return bits;<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> /**<a name="line.249"></a> |
| <FONT color="green">250</FONT> * Read the object from a serialization stream.<a name="line.250"></a> |
| <FONT color="green">251</FONT> *<a name="line.251"></a> |
| <FONT color="green">252</FONT> * @param stream Input stream to read from<a name="line.252"></a> |
| <FONT color="green">253</FONT> *<a name="line.253"></a> |
| <FONT color="green">254</FONT> * @throws java.io.IOException<a name="line.254"></a> |
| <FONT color="green">255</FONT> * @throws javax.xml.transform.TransformerException<a name="line.255"></a> |
| <FONT color="green">256</FONT> */<a name="line.256"></a> |
| <FONT color="green">257</FONT> private void readObject(java.io.ObjectInputStream stream)<a name="line.257"></a> |
| <FONT color="green">258</FONT> throws java.io.IOException, javax.xml.transform.TransformerException<a name="line.258"></a> |
| <FONT color="green">259</FONT> {<a name="line.259"></a> |
| <FONT color="green">260</FONT> try<a name="line.260"></a> |
| <FONT color="green">261</FONT> {<a name="line.261"></a> |
| <FONT color="green">262</FONT> stream.defaultReadObject();<a name="line.262"></a> |
| <FONT color="green">263</FONT> m_clones = new IteratorPool(this);<a name="line.263"></a> |
| <FONT color="green">264</FONT> }<a name="line.264"></a> |
| <FONT color="green">265</FONT> catch (ClassNotFoundException cnfe)<a name="line.265"></a> |
| <FONT color="green">266</FONT> {<a name="line.266"></a> |
| <FONT color="green">267</FONT> throw new javax.xml.transform.TransformerException(cnfe);<a name="line.267"></a> |
| <FONT color="green">268</FONT> }<a name="line.268"></a> |
| <FONT color="green">269</FONT> }<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> * Get a cloned LocPathIterator that holds the same <a name="line.272"></a> |
| <FONT color="green">273</FONT> * position as this iterator.<a name="line.273"></a> |
| <FONT color="green">274</FONT> *<a name="line.274"></a> |
| <FONT color="green">275</FONT> * @return A clone of this iterator that holds the same node position.<a name="line.275"></a> |
| <FONT color="green">276</FONT> *<a name="line.276"></a> |
| <FONT color="green">277</FONT> * @throws CloneNotSupportedException<a name="line.277"></a> |
| <FONT color="green">278</FONT> */<a name="line.278"></a> |
| <FONT color="green">279</FONT> public Object clone() throws CloneNotSupportedException<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> UnionPathIterator clone = (UnionPathIterator) super.clone();<a name="line.282"></a> |
| <FONT color="green">283</FONT> if (m_iterators != null)<a name="line.283"></a> |
| <FONT color="green">284</FONT> {<a name="line.284"></a> |
| <FONT color="green">285</FONT> int n = m_iterators.length;<a name="line.285"></a> |
| <FONT color="green">286</FONT> <a name="line.286"></a> |
| <FONT color="green">287</FONT> clone.m_iterators = new DTMIterator[n];<a name="line.287"></a> |
| <FONT color="green">288</FONT> <a name="line.288"></a> |
| <FONT color="green">289</FONT> for (int i = 0; i < n; i++)<a name="line.289"></a> |
| <FONT color="green">290</FONT> {<a name="line.290"></a> |
| <FONT color="green">291</FONT> clone.m_iterators[i] = (DTMIterator)m_iterators[i].clone();<a name="line.291"></a> |
| <FONT color="green">292</FONT> }<a name="line.292"></a> |
| <FONT color="green">293</FONT> }<a name="line.293"></a> |
| <FONT color="green">294</FONT> <a name="line.294"></a> |
| <FONT color="green">295</FONT> return clone;<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> <a name="line.298"></a> |
| <FONT color="green">299</FONT> /**<a name="line.299"></a> |
| <FONT color="green">300</FONT> * Create a new location path iterator.<a name="line.300"></a> |
| <FONT color="green">301</FONT> *<a name="line.301"></a> |
| <FONT color="green">302</FONT> * @param compiler The Compiler which is creating <a name="line.302"></a> |
| <FONT color="green">303</FONT> * this expression.<a name="line.303"></a> |
| <FONT color="green">304</FONT> * @param opPos The position of this iterator in the <a name="line.304"></a> |
| <FONT color="green">305</FONT> *<a name="line.305"></a> |
| <FONT color="green">306</FONT> * @return New location path iterator.<a name="line.306"></a> |
| <FONT color="green">307</FONT> *<a name="line.307"></a> |
| <FONT color="green">308</FONT> * @throws javax.xml.transform.TransformerException<a name="line.308"></a> |
| <FONT color="green">309</FONT> */<a name="line.309"></a> |
| <FONT color="green">310</FONT> protected LocPathIterator createDTMIterator(<a name="line.310"></a> |
| <FONT color="green">311</FONT> Compiler compiler, int opPos) throws javax.xml.transform.TransformerException<a name="line.311"></a> |
| <FONT color="green">312</FONT> {<a name="line.312"></a> |
| <FONT color="green">313</FONT> LocPathIterator lpi = (LocPathIterator)WalkerFactory.newDTMIterator(compiler, opPos, <a name="line.313"></a> |
| <FONT color="green">314</FONT> (compiler.getLocationPathDepth() <= 0));<a name="line.314"></a> |
| <FONT color="green">315</FONT> return lpi;<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> /**<a name="line.318"></a> |
| <FONT color="green">319</FONT> * Initialize the location path iterators. Recursive.<a name="line.319"></a> |
| <FONT color="green">320</FONT> *<a name="line.320"></a> |
| <FONT color="green">321</FONT> * @param compiler The Compiler which is creating <a name="line.321"></a> |
| <FONT color="green">322</FONT> * this expression.<a name="line.322"></a> |
| <FONT color="green">323</FONT> * @param opPos The position of this iterator in the <a name="line.323"></a> |
| <FONT color="green">324</FONT> * opcode list from the compiler.<a name="line.324"></a> |
| <FONT color="green">325</FONT> * @param count The insert position of the iterator.<a name="line.325"></a> |
| <FONT color="green">326</FONT> *<a name="line.326"></a> |
| <FONT color="green">327</FONT> * @throws javax.xml.transform.TransformerException<a name="line.327"></a> |
| <FONT color="green">328</FONT> */<a name="line.328"></a> |
| <FONT color="green">329</FONT> protected void loadLocationPaths(Compiler compiler, int opPos, int count)<a name="line.329"></a> |
| <FONT color="green">330</FONT> throws javax.xml.transform.TransformerException<a name="line.330"></a> |
| <FONT color="green">331</FONT> {<a name="line.331"></a> |
| <FONT color="green">332</FONT> <a name="line.332"></a> |
| <FONT color="green">333</FONT> // TODO: Handle unwrapped FilterExpr<a name="line.333"></a> |
| <FONT color="green">334</FONT> int steptype = compiler.getOp(opPos);<a name="line.334"></a> |
| <FONT color="green">335</FONT> <a name="line.335"></a> |
| <FONT color="green">336</FONT> if (steptype == OpCodes.OP_LOCATIONPATH)<a name="line.336"></a> |
| <FONT color="green">337</FONT> {<a name="line.337"></a> |
| <FONT color="green">338</FONT> loadLocationPaths(compiler, compiler.getNextOpPos(opPos), count + 1);<a name="line.338"></a> |
| <FONT color="green">339</FONT> <a name="line.339"></a> |
| <FONT color="green">340</FONT> m_exprs[count] = createDTMIterator(compiler, opPos);<a name="line.340"></a> |
| <FONT color="green">341</FONT> m_exprs[count].exprSetParent(this);<a name="line.341"></a> |
| <FONT color="green">342</FONT> }<a name="line.342"></a> |
| <FONT color="green">343</FONT> else<a name="line.343"></a> |
| <FONT color="green">344</FONT> {<a name="line.344"></a> |
| <FONT color="green">345</FONT> <a name="line.345"></a> |
| <FONT color="green">346</FONT> // Have to check for unwrapped functions, which the LocPathIterator<a name="line.346"></a> |
| <FONT color="green">347</FONT> // doesn't handle. <a name="line.347"></a> |
| <FONT color="green">348</FONT> switch (steptype)<a name="line.348"></a> |
| <FONT color="green">349</FONT> {<a name="line.349"></a> |
| <FONT color="green">350</FONT> case OpCodes.OP_VARIABLE :<a name="line.350"></a> |
| <FONT color="green">351</FONT> case OpCodes.OP_EXTFUNCTION :<a name="line.351"></a> |
| <FONT color="green">352</FONT> case OpCodes.OP_FUNCTION :<a name="line.352"></a> |
| <FONT color="green">353</FONT> case OpCodes.OP_GROUP :<a name="line.353"></a> |
| <FONT color="green">354</FONT> loadLocationPaths(compiler, compiler.getNextOpPos(opPos), count + 1);<a name="line.354"></a> |
| <FONT color="green">355</FONT> <a name="line.355"></a> |
| <FONT color="green">356</FONT> WalkingIterator iter =<a name="line.356"></a> |
| <FONT color="green">357</FONT> new WalkingIterator(compiler.getNamespaceContext());<a name="line.357"></a> |
| <FONT color="green">358</FONT> iter.exprSetParent(this);<a name="line.358"></a> |
| <FONT color="green">359</FONT> <a name="line.359"></a> |
| <FONT color="green">360</FONT> if(compiler.getLocationPathDepth() <= 0)<a name="line.360"></a> |
| <FONT color="green">361</FONT> iter.setIsTopLevel(true);<a name="line.361"></a> |
| <FONT color="green">362</FONT> <a name="line.362"></a> |
| <FONT color="green">363</FONT> iter.m_firstWalker = new org.apache.xpath.axes.FilterExprWalker(iter);<a name="line.363"></a> |
| <FONT color="green">364</FONT> <a name="line.364"></a> |
| <FONT color="green">365</FONT> iter.m_firstWalker.init(compiler, opPos, steptype);<a name="line.365"></a> |
| <FONT color="green">366</FONT> <a name="line.366"></a> |
| <FONT color="green">367</FONT> m_exprs[count] = iter;<a name="line.367"></a> |
| <FONT color="green">368</FONT> break;<a name="line.368"></a> |
| <FONT color="green">369</FONT> default :<a name="line.369"></a> |
| <FONT color="green">370</FONT> m_exprs = new LocPathIterator[count];<a name="line.370"></a> |
| <FONT color="green">371</FONT> }<a name="line.371"></a> |
| <FONT color="green">372</FONT> }<a name="line.372"></a> |
| <FONT color="green">373</FONT> }<a name="line.373"></a> |
| <FONT color="green">374</FONT> <a name="line.374"></a> |
| <FONT color="green">375</FONT> /**<a name="line.375"></a> |
| <FONT color="green">376</FONT> * Returns the next node in the set and advances the position of the<a name="line.376"></a> |
| <FONT color="green">377</FONT> * iterator in the set. After a DTMIterator is created, the first call<a name="line.377"></a> |
| <FONT color="green">378</FONT> * to nextNode() returns the first node in the set.<a name="line.378"></a> |
| <FONT color="green">379</FONT> * @return The next <code>Node</code> in the set being iterated over, or<a name="line.379"></a> |
| <FONT color="green">380</FONT> * <code>null</code> if there are no more members in that set.<a name="line.380"></a> |
| <FONT color="green">381</FONT> */<a name="line.381"></a> |
| <FONT color="green">382</FONT> public int nextNode()<a name="line.382"></a> |
| <FONT color="green">383</FONT> {<a name="line.383"></a> |
| <FONT color="green">384</FONT> if(m_foundLast)<a name="line.384"></a> |
| <FONT color="green">385</FONT> return DTM.NULL;<a name="line.385"></a> |
| <FONT color="green">386</FONT> <a name="line.386"></a> |
| <FONT color="green">387</FONT> // Loop through the iterators getting the current fetched <a name="line.387"></a> |
| <FONT color="green">388</FONT> // node, and get the earliest occuring in document order<a name="line.388"></a> |
| <FONT color="green">389</FONT> int earliestNode = DTM.NULL;<a name="line.389"></a> |
| <FONT color="green">390</FONT> <a name="line.390"></a> |
| <FONT color="green">391</FONT> if (null != m_iterators)<a name="line.391"></a> |
| <FONT color="green">392</FONT> {<a name="line.392"></a> |
| <FONT color="green">393</FONT> int n = m_iterators.length;<a name="line.393"></a> |
| <FONT color="green">394</FONT> int iteratorUsed = -1;<a name="line.394"></a> |
| <FONT color="green">395</FONT> <a name="line.395"></a> |
| <FONT color="green">396</FONT> for (int i = 0; i < n; i++)<a name="line.396"></a> |
| <FONT color="green">397</FONT> {<a name="line.397"></a> |
| <FONT color="green">398</FONT> int node = m_iterators[i].getCurrentNode();<a name="line.398"></a> |
| <FONT color="green">399</FONT> <a name="line.399"></a> |
| <FONT color="green">400</FONT> if (DTM.NULL == node)<a name="line.400"></a> |
| <FONT color="green">401</FONT> continue;<a name="line.401"></a> |
| <FONT color="green">402</FONT> else if (DTM.NULL == earliestNode)<a name="line.402"></a> |
| <FONT color="green">403</FONT> {<a name="line.403"></a> |
| <FONT color="green">404</FONT> iteratorUsed = i;<a name="line.404"></a> |
| <FONT color="green">405</FONT> earliestNode = node;<a name="line.405"></a> |
| <FONT color="green">406</FONT> }<a name="line.406"></a> |
| <FONT color="green">407</FONT> else<a name="line.407"></a> |
| <FONT color="green">408</FONT> {<a name="line.408"></a> |
| <FONT color="green">409</FONT> if (node == earliestNode)<a name="line.409"></a> |
| <FONT color="green">410</FONT> {<a name="line.410"></a> |
| <FONT color="green">411</FONT> <a name="line.411"></a> |
| <FONT color="green">412</FONT> // Found a duplicate, so skip past it.<a name="line.412"></a> |
| <FONT color="green">413</FONT> m_iterators[i].nextNode();<a name="line.413"></a> |
| <FONT color="green">414</FONT> }<a name="line.414"></a> |
| <FONT color="green">415</FONT> else<a name="line.415"></a> |
| <FONT color="green">416</FONT> {<a name="line.416"></a> |
| <FONT color="green">417</FONT> DTM dtm = getDTM(node);<a name="line.417"></a> |
| <FONT color="green">418</FONT> <a name="line.418"></a> |
| <FONT color="green">419</FONT> if (dtm.isNodeAfter(node, earliestNode))<a name="line.419"></a> |
| <FONT color="green">420</FONT> {<a name="line.420"></a> |
| <FONT color="green">421</FONT> iteratorUsed = i;<a name="line.421"></a> |
| <FONT color="green">422</FONT> earliestNode = node;<a name="line.422"></a> |
| <FONT color="green">423</FONT> }<a name="line.423"></a> |
| <FONT color="green">424</FONT> }<a name="line.424"></a> |
| <FONT color="green">425</FONT> }<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> if (DTM.NULL != earliestNode)<a name="line.428"></a> |
| <FONT color="green">429</FONT> {<a name="line.429"></a> |
| <FONT color="green">430</FONT> m_iterators[iteratorUsed].nextNode();<a name="line.430"></a> |
| <FONT color="green">431</FONT> <a name="line.431"></a> |
| <FONT color="green">432</FONT> incrementCurrentPos();<a name="line.432"></a> |
| <FONT color="green">433</FONT> }<a name="line.433"></a> |
| <FONT color="green">434</FONT> else<a name="line.434"></a> |
| <FONT color="green">435</FONT> m_foundLast = true;<a name="line.435"></a> |
| <FONT color="green">436</FONT> }<a name="line.436"></a> |
| <FONT color="green">437</FONT> <a name="line.437"></a> |
| <FONT color="green">438</FONT> m_lastFetched = earliestNode;<a name="line.438"></a> |
| <FONT color="green">439</FONT> <a name="line.439"></a> |
| <FONT color="green">440</FONT> return earliestNode;<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> * This function is used to fixup variables from QNames to stack frame <a name="line.444"></a> |
| <FONT color="green">445</FONT> * indexes at stylesheet build time.<a name="line.445"></a> |
| <FONT color="green">446</FONT> * @param vars List of QNames that correspond to variables. This list <a name="line.446"></a> |
| <FONT color="green">447</FONT> * should be searched backwards for the first qualified name that <a name="line.447"></a> |
| <FONT color="green">448</FONT> * corresponds to the variable reference qname. The position of the <a name="line.448"></a> |
| <FONT color="green">449</FONT> * QName in the vector from the start of the vector will be its position <a name="line.449"></a> |
| <FONT color="green">450</FONT> * in the stack frame (but variables above the globalsTop value will need <a name="line.450"></a> |
| <FONT color="green">451</FONT> * to be offset to the current stack frame).<a name="line.451"></a> |
| <FONT color="green">452</FONT> */<a name="line.452"></a> |
| <FONT color="green">453</FONT> public void fixupVariables(java.util.Vector vars, int globalsSize)<a name="line.453"></a> |
| <FONT color="green">454</FONT> {<a name="line.454"></a> |
| <FONT color="green">455</FONT> for (int i = 0; i < m_exprs.length; i++) <a name="line.455"></a> |
| <FONT color="green">456</FONT> {<a name="line.456"></a> |
| <FONT color="green">457</FONT> m_exprs[i].fixupVariables(vars, globalsSize);<a name="line.457"></a> |
| <FONT color="green">458</FONT> }<a name="line.458"></a> |
| <FONT color="green">459</FONT> <a name="line.459"></a> |
| <FONT color="green">460</FONT> }<a name="line.460"></a> |
| <FONT color="green">461</FONT> <a name="line.461"></a> |
| <FONT color="green">462</FONT> /**<a name="line.462"></a> |
| <FONT color="green">463</FONT> * The location path iterators, one for each<a name="line.463"></a> |
| <FONT color="green">464</FONT> * <a href="http://www.w3.org/TR/xpath#NT-LocationPath">location<a name="line.464"></a> |
| <FONT color="green">465</FONT> * path</a> contained in the union expression.<a name="line.465"></a> |
| <FONT color="green">466</FONT> * @serial<a name="line.466"></a> |
| <FONT color="green">467</FONT> */<a name="line.467"></a> |
| <FONT color="green">468</FONT> protected LocPathIterator[] m_exprs;<a name="line.468"></a> |
| <FONT color="green">469</FONT> <a name="line.469"></a> |
| <FONT color="green">470</FONT> <a name="line.470"></a> |
| <FONT color="green">471</FONT> /**<a name="line.471"></a> |
| <FONT color="green">472</FONT> * The location path iterators, one for each<a name="line.472"></a> |
| <FONT color="green">473</FONT> * <a href="http://www.w3.org/TR/xpath#NT-LocationPath">location<a name="line.473"></a> |
| <FONT color="green">474</FONT> * path</a> contained in the union expression.<a name="line.474"></a> |
| <FONT color="green">475</FONT> * @serial<a name="line.475"></a> |
| <FONT color="green">476</FONT> */<a name="line.476"></a> |
| <FONT color="green">477</FONT> protected DTMIterator[] m_iterators;<a name="line.477"></a> |
| <FONT color="green">478</FONT> <a name="line.478"></a> |
| <FONT color="green">479</FONT> /**<a name="line.479"></a> |
| <FONT color="green">480</FONT> * Returns the axis being iterated, if it is known.<a name="line.480"></a> |
| <FONT color="green">481</FONT> * <a name="line.481"></a> |
| <FONT color="green">482</FONT> * @return Axis.CHILD, etc., or -1 if the axis is not known or is of multiple <a name="line.482"></a> |
| <FONT color="green">483</FONT> * types.<a name="line.483"></a> |
| <FONT color="green">484</FONT> */<a name="line.484"></a> |
| <FONT color="green">485</FONT> public int getAxis()<a name="line.485"></a> |
| <FONT color="green">486</FONT> {<a name="line.486"></a> |
| <FONT color="green">487</FONT> // Could be smarter.<a name="line.487"></a> |
| <FONT color="green">488</FONT> return -1;<a name="line.488"></a> |
| <FONT color="green">489</FONT> }<a name="line.489"></a> |
| <FONT color="green">490</FONT> <a name="line.490"></a> |
| <FONT color="green">491</FONT> class iterOwner implements ExpressionOwner<a name="line.491"></a> |
| <FONT color="green">492</FONT> {<a name="line.492"></a> |
| <FONT color="green">493</FONT> int m_index;<a name="line.493"></a> |
| <FONT color="green">494</FONT> <a name="line.494"></a> |
| <FONT color="green">495</FONT> iterOwner(int index)<a name="line.495"></a> |
| <FONT color="green">496</FONT> {<a name="line.496"></a> |
| <FONT color="green">497</FONT> m_index = index;<a name="line.497"></a> |
| <FONT color="green">498</FONT> }<a name="line.498"></a> |
| <FONT color="green">499</FONT> <a name="line.499"></a> |
| <FONT color="green">500</FONT> /**<a name="line.500"></a> |
| <FONT color="green">501</FONT> * @see ExpressionOwner#getExpression()<a name="line.501"></a> |
| <FONT color="green">502</FONT> */<a name="line.502"></a> |
| <FONT color="green">503</FONT> public Expression getExpression()<a name="line.503"></a> |
| <FONT color="green">504</FONT> {<a name="line.504"></a> |
| <FONT color="green">505</FONT> return m_exprs[m_index];<a name="line.505"></a> |
| <FONT color="green">506</FONT> }<a name="line.506"></a> |
| <FONT color="green">507</FONT> <a name="line.507"></a> |
| <FONT color="green">508</FONT> /**<a name="line.508"></a> |
| <FONT color="green">509</FONT> * @see ExpressionOwner#setExpression(Expression)<a name="line.509"></a> |
| <FONT color="green">510</FONT> */<a name="line.510"></a> |
| <FONT color="green">511</FONT> public void setExpression(Expression exp)<a name="line.511"></a> |
| <FONT color="green">512</FONT> {<a name="line.512"></a> |
| <FONT color="green">513</FONT> <a name="line.513"></a> |
| <FONT color="green">514</FONT> if(!(exp instanceof LocPathIterator))<a name="line.514"></a> |
| <FONT color="green">515</FONT> {<a name="line.515"></a> |
| <FONT color="green">516</FONT> // Yuck. Need FilterExprIter. Or make it so m_exprs can be just <a name="line.516"></a> |
| <FONT color="green">517</FONT> // plain expressions?<a name="line.517"></a> |
| <FONT color="green">518</FONT> WalkingIterator wi = new WalkingIterator(getPrefixResolver());<a name="line.518"></a> |
| <FONT color="green">519</FONT> FilterExprWalker few = new FilterExprWalker(wi);<a name="line.519"></a> |
| <FONT color="green">520</FONT> wi.setFirstWalker(few);<a name="line.520"></a> |
| <FONT color="green">521</FONT> few.setInnerExpression(exp);<a name="line.521"></a> |
| <FONT color="green">522</FONT> wi.exprSetParent(UnionPathIterator.this);<a name="line.522"></a> |
| <FONT color="green">523</FONT> few.exprSetParent(wi);<a name="line.523"></a> |
| <FONT color="green">524</FONT> exp.exprSetParent(few);<a name="line.524"></a> |
| <FONT color="green">525</FONT> exp = wi;<a name="line.525"></a> |
| <FONT color="green">526</FONT> }<a name="line.526"></a> |
| <FONT color="green">527</FONT> else<a name="line.527"></a> |
| <FONT color="green">528</FONT> exp.exprSetParent(UnionPathIterator.this);<a name="line.528"></a> |
| <FONT color="green">529</FONT> m_exprs[m_index] = (LocPathIterator)exp;<a name="line.529"></a> |
| <FONT color="green">530</FONT> }<a name="line.530"></a> |
| <FONT color="green">531</FONT> <a name="line.531"></a> |
| <FONT color="green">532</FONT> }<a name="line.532"></a> |
| <FONT color="green">533</FONT> <a name="line.533"></a> |
| <FONT color="green">534</FONT> /**<a name="line.534"></a> |
| <FONT color="green">535</FONT> * @see org.apache.xpath.XPathVisitable#callVisitors(ExpressionOwner, XPathVisitor)<a name="line.535"></a> |
| <FONT color="green">536</FONT> */<a name="line.536"></a> |
| <FONT color="green">537</FONT> public void callVisitors(ExpressionOwner owner, XPathVisitor visitor)<a name="line.537"></a> |
| <FONT color="green">538</FONT> {<a name="line.538"></a> |
| <FONT color="green">539</FONT> if(visitor.visitUnionPath(owner, this))<a name="line.539"></a> |
| <FONT color="green">540</FONT> {<a name="line.540"></a> |
| <FONT color="green">541</FONT> if(null != m_exprs)<a name="line.541"></a> |
| <FONT color="green">542</FONT> {<a name="line.542"></a> |
| <FONT color="green">543</FONT> int n = m_exprs.length;<a name="line.543"></a> |
| <FONT color="green">544</FONT> for(int i = 0; i < n; i++)<a name="line.544"></a> |
| <FONT color="green">545</FONT> {<a name="line.545"></a> |
| <FONT color="green">546</FONT> m_exprs[i].callVisitors(new iterOwner(i), visitor);<a name="line.546"></a> |
| <FONT color="green">547</FONT> }<a name="line.547"></a> |
| <FONT color="green">548</FONT> }<a name="line.548"></a> |
| <FONT color="green">549</FONT> }<a name="line.549"></a> |
| <FONT color="green">550</FONT> }<a name="line.550"></a> |
| <FONT color="green">551</FONT> <a name="line.551"></a> |
| <FONT color="green">552</FONT> /**<a name="line.552"></a> |
| <FONT color="green">553</FONT> * @see Expression#deepEquals(Expression)<a name="line.553"></a> |
| <FONT color="green">554</FONT> */<a name="line.554"></a> |
| <FONT color="green">555</FONT> public boolean deepEquals(Expression expr)<a name="line.555"></a> |
| <FONT color="green">556</FONT> {<a name="line.556"></a> |
| <FONT color="green">557</FONT> if (!super.deepEquals(expr))<a name="line.557"></a> |
| <FONT color="green">558</FONT> return false;<a name="line.558"></a> |
| <FONT color="green">559</FONT> <a name="line.559"></a> |
| <FONT color="green">560</FONT> UnionPathIterator upi = (UnionPathIterator) expr;<a name="line.560"></a> |
| <FONT color="green">561</FONT> <a name="line.561"></a> |
| <FONT color="green">562</FONT> if (null != m_exprs)<a name="line.562"></a> |
| <FONT color="green">563</FONT> {<a name="line.563"></a> |
| <FONT color="green">564</FONT> int n = m_exprs.length;<a name="line.564"></a> |
| <FONT color="green">565</FONT> <a name="line.565"></a> |
| <FONT color="green">566</FONT> if((null == upi.m_exprs) || (upi.m_exprs.length != n))<a name="line.566"></a> |
| <FONT color="green">567</FONT> return false;<a name="line.567"></a> |
| <FONT color="green">568</FONT> <a name="line.568"></a> |
| <FONT color="green">569</FONT> for (int i = 0; i < n; i++)<a name="line.569"></a> |
| <FONT color="green">570</FONT> {<a name="line.570"></a> |
| <FONT color="green">571</FONT> if(!m_exprs[i].deepEquals(upi.m_exprs[i]))<a name="line.571"></a> |
| <FONT color="green">572</FONT> return false;<a name="line.572"></a> |
| <FONT color="green">573</FONT> }<a name="line.573"></a> |
| <FONT color="green">574</FONT> }<a name="line.574"></a> |
| <FONT color="green">575</FONT> else if (null != upi.m_exprs)<a name="line.575"></a> |
| <FONT color="green">576</FONT> {<a name="line.576"></a> |
| <FONT color="green">577</FONT> return false;<a name="line.577"></a> |
| <FONT color="green">578</FONT> }<a name="line.578"></a> |
| <FONT color="green">579</FONT> <a name="line.579"></a> |
| <FONT color="green">580</FONT> return true;<a name="line.580"></a> |
| <FONT color="green">581</FONT> }<a name="line.581"></a> |
| <FONT color="green">582</FONT> <a name="line.582"></a> |
| <FONT color="green">583</FONT> <a name="line.583"></a> |
| <FONT color="green">584</FONT> }<a name="line.584"></a> |
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| </PRE> |
| </BODY> |
| </HTML> |
