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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: FilterExprWalker.java 469367 2006-10-31 04:41:08Z 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.XPathContext;<a name="line.28"></a> |
| <FONT color="green">029</FONT> import org.apache.xpath.XPathVisitor;<a name="line.29"></a> |
| <FONT color="green">030</FONT> import org.apache.xpath.compiler.Compiler;<a name="line.30"></a> |
| <FONT color="green">031</FONT> import org.apache.xpath.compiler.OpCodes;<a name="line.31"></a> |
| <FONT color="green">032</FONT> import org.apache.xpath.objects.XNodeSet;<a name="line.32"></a> |
| <FONT color="green">033</FONT> <a name="line.33"></a> |
| <FONT color="green">034</FONT> /**<a name="line.34"></a> |
| <FONT color="green">035</FONT> * Walker for the OP_VARIABLE, or OP_EXTFUNCTION, or OP_FUNCTION, or OP_GROUP,<a name="line.35"></a> |
| <FONT color="green">036</FONT> * op codes.<a name="line.36"></a> |
| <FONT color="green">037</FONT> * @see <a href="http://www.w3.org/TR/xpath#NT-FilterExpr">XPath FilterExpr descriptions</a><a name="line.37"></a> |
| <FONT color="green">038</FONT> */<a name="line.38"></a> |
| <FONT color="green">039</FONT> public class FilterExprWalker extends AxesWalker<a name="line.39"></a> |
| <FONT color="green">040</FONT> {<a name="line.40"></a> |
| <FONT color="green">041</FONT> static final long serialVersionUID = 5457182471424488375L;<a name="line.41"></a> |
| <FONT color="green">042</FONT> <a name="line.42"></a> |
| <FONT color="green">043</FONT> /**<a name="line.43"></a> |
| <FONT color="green">044</FONT> * Construct a FilterExprWalker using a LocPathIterator.<a name="line.44"></a> |
| <FONT color="green">045</FONT> *<a name="line.45"></a> |
| <FONT color="green">046</FONT> * @param locPathIterator non-null reference to the parent iterator.<a name="line.46"></a> |
| <FONT color="green">047</FONT> */<a name="line.47"></a> |
| <FONT color="green">048</FONT> public FilterExprWalker(WalkingIterator locPathIterator)<a name="line.48"></a> |
| <FONT color="green">049</FONT> {<a name="line.49"></a> |
| <FONT color="green">050</FONT> super(locPathIterator, Axis.FILTEREDLIST);<a name="line.50"></a> |
| <FONT color="green">051</FONT> }<a name="line.51"></a> |
| <FONT color="green">052</FONT> <a name="line.52"></a> |
| <FONT color="green">053</FONT> /**<a name="line.53"></a> |
| <FONT color="green">054</FONT> * Init a FilterExprWalker.<a name="line.54"></a> |
| <FONT color="green">055</FONT> *<a name="line.55"></a> |
| <FONT color="green">056</FONT> * @param compiler non-null reference to the Compiler that is constructing.<a name="line.56"></a> |
| <FONT color="green">057</FONT> * @param opPos positive opcode position for this step.<a name="line.57"></a> |
| <FONT color="green">058</FONT> * @param stepType The type of step.<a name="line.58"></a> |
| <FONT color="green">059</FONT> *<a name="line.59"></a> |
| <FONT color="green">060</FONT> * @throws javax.xml.transform.TransformerException<a name="line.60"></a> |
| <FONT color="green">061</FONT> */<a name="line.61"></a> |
| <FONT color="green">062</FONT> public void init(Compiler compiler, int opPos, int stepType)<a name="line.62"></a> |
| <FONT color="green">063</FONT> throws javax.xml.transform.TransformerException<a name="line.63"></a> |
| <FONT color="green">064</FONT> {<a name="line.64"></a> |
| <FONT color="green">065</FONT> <a name="line.65"></a> |
| <FONT color="green">066</FONT> super.init(compiler, opPos, stepType);<a name="line.66"></a> |
| <FONT color="green">067</FONT> <a name="line.67"></a> |
| <FONT color="green">068</FONT> // Smooth over an anomily in the opcode map...<a name="line.68"></a> |
| <FONT color="green">069</FONT> switch (stepType)<a name="line.69"></a> |
| <FONT color="green">070</FONT> {<a name="line.70"></a> |
| <FONT color="green">071</FONT> case OpCodes.OP_FUNCTION :<a name="line.71"></a> |
| <FONT color="green">072</FONT> case OpCodes.OP_EXTFUNCTION :<a name="line.72"></a> |
| <FONT color="green">073</FONT> m_mustHardReset = true;<a name="line.73"></a> |
| <FONT color="green">074</FONT> case OpCodes.OP_GROUP :<a name="line.74"></a> |
| <FONT color="green">075</FONT> case OpCodes.OP_VARIABLE :<a name="line.75"></a> |
| <FONT color="green">076</FONT> m_expr = compiler.compile(opPos);<a name="line.76"></a> |
| <FONT color="green">077</FONT> m_expr.exprSetParent(this);<a name="line.77"></a> |
| <FONT color="green">078</FONT> //if((OpCodes.OP_FUNCTION == stepType) && (m_expr instanceof org.apache.xalan.templates.FuncKey))<a name="line.78"></a> |
| <FONT color="green">079</FONT> if(m_expr instanceof org.apache.xpath.operations.Variable)<a name="line.79"></a> |
| <FONT color="green">080</FONT> {<a name="line.80"></a> |
| <FONT color="green">081</FONT> // hack/temp workaround<a name="line.81"></a> |
| <FONT color="green">082</FONT> m_canDetachNodeset = false;<a name="line.82"></a> |
| <FONT color="green">083</FONT> }<a name="line.83"></a> |
| <FONT color="green">084</FONT> break;<a name="line.84"></a> |
| <FONT color="green">085</FONT> default :<a name="line.85"></a> |
| <FONT color="green">086</FONT> m_expr = compiler.compile(opPos + 2);<a name="line.86"></a> |
| <FONT color="green">087</FONT> m_expr.exprSetParent(this);<a name="line.87"></a> |
| <FONT color="green">088</FONT> }<a name="line.88"></a> |
| <FONT color="green">089</FONT> // if(m_expr instanceof WalkingIterator)<a name="line.89"></a> |
| <FONT color="green">090</FONT> // {<a name="line.90"></a> |
| <FONT color="green">091</FONT> // WalkingIterator wi = (WalkingIterator)m_expr;<a name="line.91"></a> |
| <FONT color="green">092</FONT> // if(wi.getFirstWalker() instanceof FilterExprWalker)<a name="line.92"></a> |
| <FONT color="green">093</FONT> // {<a name="line.93"></a> |
| <FONT color="green">094</FONT> // FilterExprWalker fw = (FilterExprWalker)wi.getFirstWalker();<a name="line.94"></a> |
| <FONT color="green">095</FONT> // if(null == fw.getNextWalker())<a name="line.95"></a> |
| <FONT color="green">096</FONT> // {<a name="line.96"></a> |
| <FONT color="green">097</FONT> // m_expr = fw.m_expr;<a name="line.97"></a> |
| <FONT color="green">098</FONT> // m_expr.exprSetParent(this);<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> // <a name="line.101"></a> |
| <FONT color="green">102</FONT> // }<a name="line.102"></a> |
| <FONT color="green">103</FONT> }<a name="line.103"></a> |
| <FONT color="green">104</FONT> <a name="line.104"></a> |
| <FONT color="green">105</FONT> /**<a name="line.105"></a> |
| <FONT color="green">106</FONT> * Detaches the walker from the set which it iterated over, releasing<a name="line.106"></a> |
| <FONT color="green">107</FONT> * any computational resources and placing the iterator in the INVALID<a name="line.107"></a> |
| <FONT color="green">108</FONT> * state.<a name="line.108"></a> |
| <FONT color="green">109</FONT> */<a name="line.109"></a> |
| <FONT color="green">110</FONT> public void detach()<a name="line.110"></a> |
| <FONT color="green">111</FONT> { <a name="line.111"></a> |
| <FONT color="green">112</FONT> super.detach();<a name="line.112"></a> |
| <FONT color="green">113</FONT> if (m_canDetachNodeset)<a name="line.113"></a> |
| <FONT color="green">114</FONT> {<a name="line.114"></a> |
| <FONT color="green">115</FONT> m_exprObj.detach();<a name="line.115"></a> |
| <FONT color="green">116</FONT> }<a name="line.116"></a> |
| <FONT color="green">117</FONT> m_exprObj = null;<a name="line.117"></a> |
| <FONT color="green">118</FONT> }<a name="line.118"></a> |
| <FONT color="green">119</FONT> <a name="line.119"></a> |
| <FONT color="green">120</FONT> /**<a name="line.120"></a> |
| <FONT color="green">121</FONT> * Set the root node of the TreeWalker.<a name="line.121"></a> |
| <FONT color="green">122</FONT> *<a name="line.122"></a> |
| <FONT color="green">123</FONT> * @param root non-null reference to the root, or starting point of <a name="line.123"></a> |
| <FONT color="green">124</FONT> * the query.<a name="line.124"></a> |
| <FONT color="green">125</FONT> */<a name="line.125"></a> |
| <FONT color="green">126</FONT> public void setRoot(int root)<a name="line.126"></a> |
| <FONT color="green">127</FONT> {<a name="line.127"></a> |
| <FONT color="green">128</FONT> <a name="line.128"></a> |
| <FONT color="green">129</FONT> super.setRoot(root);<a name="line.129"></a> |
| <FONT color="green">130</FONT> <a name="line.130"></a> |
| <FONT color="green">131</FONT> m_exprObj = FilterExprIteratorSimple.executeFilterExpr(root, <a name="line.131"></a> |
| <FONT color="green">132</FONT> m_lpi.getXPathContext(), m_lpi.getPrefixResolver(), <a name="line.132"></a> |
| <FONT color="green">133</FONT> m_lpi.getIsTopLevel(), m_lpi.m_stackFrame, m_expr);<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> /**<a name="line.137"></a> |
| <FONT color="green">138</FONT> * Get a cloned FilterExprWalker.<a name="line.138"></a> |
| <FONT color="green">139</FONT> *<a name="line.139"></a> |
| <FONT color="green">140</FONT> * @return A new FilterExprWalker that can be used without mutating this one.<a name="line.140"></a> |
| <FONT color="green">141</FONT> *<a name="line.141"></a> |
| <FONT color="green">142</FONT> * @throws CloneNotSupportedException<a name="line.142"></a> |
| <FONT color="green">143</FONT> */<a name="line.143"></a> |
| <FONT color="green">144</FONT> public Object clone() throws CloneNotSupportedException<a name="line.144"></a> |
| <FONT color="green">145</FONT> {<a name="line.145"></a> |
| <FONT color="green">146</FONT> <a name="line.146"></a> |
| <FONT color="green">147</FONT> FilterExprWalker clone = (FilterExprWalker) super.clone();<a name="line.147"></a> |
| <FONT color="green">148</FONT> <a name="line.148"></a> |
| <FONT color="green">149</FONT> if (null != m_exprObj)<a name="line.149"></a> |
| <FONT color="green">150</FONT> clone.m_exprObj = (XNodeSet) m_exprObj.clone();<a name="line.150"></a> |
| <FONT color="green">151</FONT> <a name="line.151"></a> |
| <FONT color="green">152</FONT> return clone;<a name="line.152"></a> |
| <FONT color="green">153</FONT> }<a name="line.153"></a> |
| <FONT color="green">154</FONT> <a name="line.154"></a> |
| <FONT color="green">155</FONT> /**<a name="line.155"></a> |
| <FONT color="green">156</FONT> * This method needs to override AxesWalker.acceptNode because FilterExprWalkers<a name="line.156"></a> |
| <FONT color="green">157</FONT> * don't need to, and shouldn't, do a node test.<a name="line.157"></a> |
| <FONT color="green">158</FONT> * @param n The node to check to see if it passes the filter or not.<a name="line.158"></a> |
| <FONT color="green">159</FONT> * @return a constant to determine whether the node is accepted,<a name="line.159"></a> |
| <FONT color="green">160</FONT> * rejected, or skipped, as defined above .<a name="line.160"></a> |
| <FONT color="green">161</FONT> */<a name="line.161"></a> |
| <FONT color="green">162</FONT> public short acceptNode(int n)<a name="line.162"></a> |
| <FONT color="green">163</FONT> {<a name="line.163"></a> |
| <FONT color="green">164</FONT> <a name="line.164"></a> |
| <FONT color="green">165</FONT> try<a name="line.165"></a> |
| <FONT color="green">166</FONT> {<a name="line.166"></a> |
| <FONT color="green">167</FONT> if (getPredicateCount() > 0)<a name="line.167"></a> |
| <FONT color="green">168</FONT> {<a name="line.168"></a> |
| <FONT color="green">169</FONT> countProximityPosition(0);<a name="line.169"></a> |
| <FONT color="green">170</FONT> <a name="line.170"></a> |
| <FONT color="green">171</FONT> if (!executePredicates(n, m_lpi.getXPathContext()))<a name="line.171"></a> |
| <FONT color="green">172</FONT> return DTMIterator.FILTER_SKIP;<a name="line.172"></a> |
| <FONT color="green">173</FONT> }<a name="line.173"></a> |
| <FONT color="green">174</FONT> <a name="line.174"></a> |
| <FONT color="green">175</FONT> return DTMIterator.FILTER_ACCEPT;<a name="line.175"></a> |
| <FONT color="green">176</FONT> }<a name="line.176"></a> |
| <FONT color="green">177</FONT> catch (javax.xml.transform.TransformerException se)<a name="line.177"></a> |
| <FONT color="green">178</FONT> {<a name="line.178"></a> |
| <FONT color="green">179</FONT> throw new RuntimeException(se.getMessage());<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> <a name="line.182"></a> |
| <FONT color="green">183</FONT> /**<a name="line.183"></a> |
| <FONT color="green">184</FONT> * Moves the <code>TreeWalker</code> to the next visible node in document<a name="line.184"></a> |
| <FONT color="green">185</FONT> * order relative to the current node, and returns the new node. If the<a name="line.185"></a> |
| <FONT color="green">186</FONT> * current node has no next node, or if the search for nextNode attempts<a name="line.186"></a> |
| <FONT color="green">187</FONT> * to step upward from the TreeWalker's root node, returns<a name="line.187"></a> |
| <FONT color="green">188</FONT> * <code>null</code> , and retains the current node.<a name="line.188"></a> |
| <FONT color="green">189</FONT> * @return The new node, or <code>null</code> if the current node has no<a name="line.189"></a> |
| <FONT color="green">190</FONT> * next node in the TreeWalker's logical view.<a name="line.190"></a> |
| <FONT color="green">191</FONT> */<a name="line.191"></a> |
| <FONT color="green">192</FONT> public int getNextNode()<a name="line.192"></a> |
| <FONT color="green">193</FONT> {<a name="line.193"></a> |
| <FONT color="green">194</FONT> <a name="line.194"></a> |
| <FONT color="green">195</FONT> if (null != m_exprObj)<a name="line.195"></a> |
| <FONT color="green">196</FONT> {<a name="line.196"></a> |
| <FONT color="green">197</FONT> int next = m_exprObj.nextNode();<a name="line.197"></a> |
| <FONT color="green">198</FONT> return next;<a name="line.198"></a> |
| <FONT color="green">199</FONT> }<a name="line.199"></a> |
| <FONT color="green">200</FONT> else<a name="line.200"></a> |
| <FONT color="green">201</FONT> return DTM.NULL;<a name="line.201"></a> |
| <FONT color="green">202</FONT> }<a name="line.202"></a> |
| <FONT color="green">203</FONT> <a name="line.203"></a> |
| <FONT color="green">204</FONT> /**<a name="line.204"></a> |
| <FONT color="green">205</FONT> * Get the index of the last node that can be itterated to.<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> * @param xctxt XPath runtime context.<a name="line.208"></a> |
| <FONT color="green">209</FONT> *<a name="line.209"></a> |
| <FONT color="green">210</FONT> * @return the index of the last node that can be itterated to.<a name="line.210"></a> |
| <FONT color="green">211</FONT> */<a name="line.211"></a> |
| <FONT color="green">212</FONT> public int getLastPos(XPathContext xctxt)<a name="line.212"></a> |
| <FONT color="green">213</FONT> {<a name="line.213"></a> |
| <FONT color="green">214</FONT> return m_exprObj.getLength();<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> /** The contained expression. Should be non-null.<a name="line.217"></a> |
| <FONT color="green">218</FONT> * @serial */<a name="line.218"></a> |
| <FONT color="green">219</FONT> private Expression m_expr;<a name="line.219"></a> |
| <FONT color="green">220</FONT> <a name="line.220"></a> |
| <FONT color="green">221</FONT> /** The result of executing m_expr. Needs to be deep cloned on clone op. */<a name="line.221"></a> |
| <FONT color="green">222</FONT> transient private XNodeSet m_exprObj;<a name="line.222"></a> |
| <FONT color="green">223</FONT> <a name="line.223"></a> |
| <FONT color="green">224</FONT> private boolean m_mustHardReset = false;<a name="line.224"></a> |
| <FONT color="green">225</FONT> private boolean m_canDetachNodeset = true;<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> * This function is used to fixup variables from QNames to stack frame <a name="line.228"></a> |
| <FONT color="green">229</FONT> * indexes at stylesheet build time.<a name="line.229"></a> |
| <FONT color="green">230</FONT> * @param vars List of QNames that correspond to variables. This list <a name="line.230"></a> |
| <FONT color="green">231</FONT> * should be searched backwards for the first qualified name that <a name="line.231"></a> |
| <FONT color="green">232</FONT> * corresponds to the variable reference qname. The position of the <a name="line.232"></a> |
| <FONT color="green">233</FONT> * QName in the vector from the start of the vector will be its position <a name="line.233"></a> |
| <FONT color="green">234</FONT> * in the stack frame (but variables above the globalsTop value will need <a name="line.234"></a> |
| <FONT color="green">235</FONT> * to be offset to the current stack frame).<a name="line.235"></a> |
| <FONT color="green">236</FONT> */<a name="line.236"></a> |
| <FONT color="green">237</FONT> public void fixupVariables(java.util.Vector vars, int globalsSize)<a name="line.237"></a> |
| <FONT color="green">238</FONT> {<a name="line.238"></a> |
| <FONT color="green">239</FONT> super.fixupVariables(vars, globalsSize);<a name="line.239"></a> |
| <FONT color="green">240</FONT> m_expr.fixupVariables(vars, globalsSize);<a name="line.240"></a> |
| <FONT color="green">241</FONT> }<a name="line.241"></a> |
| <FONT color="green">242</FONT> <a name="line.242"></a> |
| <FONT color="green">243</FONT> /**<a name="line.243"></a> |
| <FONT color="green">244</FONT> * Get the inner contained expression of this filter.<a name="line.244"></a> |
| <FONT color="green">245</FONT> */<a name="line.245"></a> |
| <FONT color="green">246</FONT> public Expression getInnerExpression()<a name="line.246"></a> |
| <FONT color="green">247</FONT> {<a name="line.247"></a> |
| <FONT color="green">248</FONT> return m_expr;<a name="line.248"></a> |
| <FONT color="green">249</FONT> }<a name="line.249"></a> |
| <FONT color="green">250</FONT> <a name="line.250"></a> |
| <FONT color="green">251</FONT> /**<a name="line.251"></a> |
| <FONT color="green">252</FONT> * Set the inner contained expression of this filter.<a name="line.252"></a> |
| <FONT color="green">253</FONT> */<a name="line.253"></a> |
| <FONT color="green">254</FONT> public void setInnerExpression(Expression expr)<a name="line.254"></a> |
| <FONT color="green">255</FONT> {<a name="line.255"></a> |
| <FONT color="green">256</FONT> expr.exprSetParent(this);<a name="line.256"></a> |
| <FONT color="green">257</FONT> m_expr = expr;<a name="line.257"></a> |
| <FONT color="green">258</FONT> }<a name="line.258"></a> |
| <FONT color="green">259</FONT> <a name="line.259"></a> |
| <FONT color="green">260</FONT> <a name="line.260"></a> |
| <FONT color="green">261</FONT> /** <a name="line.261"></a> |
| <FONT color="green">262</FONT> * Get the analysis bits for this walker, as defined in the WalkerFactory.<a name="line.262"></a> |
| <FONT color="green">263</FONT> * @return One of WalkerFactory#BIT_DESCENDANT, etc.<a name="line.263"></a> |
| <FONT color="green">264</FONT> */<a name="line.264"></a> |
| <FONT color="green">265</FONT> public int getAnalysisBits()<a name="line.265"></a> |
| <FONT color="green">266</FONT> {<a name="line.266"></a> |
| <FONT color="green">267</FONT> if (null != m_expr && m_expr instanceof PathComponent)<a name="line.267"></a> |
| <FONT color="green">268</FONT> {<a name="line.268"></a> |
| <FONT color="green">269</FONT> return ((PathComponent) m_expr).getAnalysisBits();<a name="line.269"></a> |
| <FONT color="green">270</FONT> }<a name="line.270"></a> |
| <FONT color="green">271</FONT> return WalkerFactory.BIT_FILTER;<a name="line.271"></a> |
| <FONT color="green">272</FONT> }<a name="line.272"></a> |
| <FONT color="green">273</FONT> <a name="line.273"></a> |
| <FONT color="green">274</FONT> /**<a name="line.274"></a> |
| <FONT color="green">275</FONT> * Returns true if all the nodes in the iteration well be returned in document <a name="line.275"></a> |
| <FONT color="green">276</FONT> * order.<a name="line.276"></a> |
| <FONT color="green">277</FONT> * Warning: This can only be called after setRoot has been called!<a name="line.277"></a> |
| <FONT color="green">278</FONT> * <a name="line.278"></a> |
| <FONT color="green">279</FONT> * @return true as a default.<a name="line.279"></a> |
| <FONT color="green">280</FONT> */<a name="line.280"></a> |
| <FONT color="green">281</FONT> public boolean isDocOrdered()<a name="line.281"></a> |
| <FONT color="green">282</FONT> {<a name="line.282"></a> |
| <FONT color="green">283</FONT> return m_exprObj.isDocOrdered();<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> * Returns the axis being iterated, if it is known.<a name="line.287"></a> |
| <FONT color="green">288</FONT> * <a name="line.288"></a> |
| <FONT color="green">289</FONT> * @return Axis.CHILD, etc., or -1 if the axis is not known or is of multiple <a name="line.289"></a> |
| <FONT color="green">290</FONT> * types.<a name="line.290"></a> |
| <FONT color="green">291</FONT> */<a name="line.291"></a> |
| <FONT color="green">292</FONT> public int getAxis()<a name="line.292"></a> |
| <FONT color="green">293</FONT> {<a name="line.293"></a> |
| <FONT color="green">294</FONT> return m_exprObj.getAxis();<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> class filterExprOwner implements ExpressionOwner<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> * @see ExpressionOwner#getExpression()<a name="line.300"></a> |
| <FONT color="green">301</FONT> */<a name="line.301"></a> |
| <FONT color="green">302</FONT> public Expression getExpression()<a name="line.302"></a> |
| <FONT color="green">303</FONT> {<a name="line.303"></a> |
| <FONT color="green">304</FONT> return m_expr;<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> /**<a name="line.307"></a> |
| <FONT color="green">308</FONT> * @see ExpressionOwner#setExpression(Expression)<a name="line.308"></a> |
| <FONT color="green">309</FONT> */<a name="line.309"></a> |
| <FONT color="green">310</FONT> public void setExpression(Expression exp)<a name="line.310"></a> |
| <FONT color="green">311</FONT> {<a name="line.311"></a> |
| <FONT color="green">312</FONT> exp.exprSetParent(FilterExprWalker.this);<a name="line.312"></a> |
| <FONT color="green">313</FONT> m_expr = exp;<a name="line.313"></a> |
| <FONT color="green">314</FONT> }<a name="line.314"></a> |
| <FONT color="green">315</FONT> }<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> * This will traverse the heararchy, calling the visitor for <a name="line.318"></a> |
| <FONT color="green">319</FONT> * each member. If the called visitor method returns <a name="line.319"></a> |
| <FONT color="green">320</FONT> * false, the subtree should not be called.<a name="line.320"></a> |
| <FONT color="green">321</FONT> * <a name="line.321"></a> |
| <FONT color="green">322</FONT> * @param visitor The visitor whose appropriate method will be called.<a name="line.322"></a> |
| <FONT color="green">323</FONT> */<a name="line.323"></a> |
| <FONT color="green">324</FONT> public void callPredicateVisitors(XPathVisitor visitor)<a name="line.324"></a> |
| <FONT color="green">325</FONT> {<a name="line.325"></a> |
| <FONT color="green">326</FONT> m_expr.callVisitors(new filterExprOwner(), visitor);<a name="line.326"></a> |
| <FONT color="green">327</FONT> <a name="line.327"></a> |
| <FONT color="green">328</FONT> super.callPredicateVisitors(visitor);<a name="line.328"></a> |
| <FONT color="green">329</FONT> } <a name="line.329"></a> |
| <FONT color="green">330</FONT> <a name="line.330"></a> |
| <FONT color="green">331</FONT> <a name="line.331"></a> |
| <FONT color="green">332</FONT> /**<a name="line.332"></a> |
| <FONT color="green">333</FONT> * @see Expression#deepEquals(Expression)<a name="line.333"></a> |
| <FONT color="green">334</FONT> */<a name="line.334"></a> |
| <FONT color="green">335</FONT> public boolean deepEquals(Expression expr)<a name="line.335"></a> |
| <FONT color="green">336</FONT> {<a name="line.336"></a> |
| <FONT color="green">337</FONT> if (!super.deepEquals(expr))<a name="line.337"></a> |
| <FONT color="green">338</FONT> return false;<a name="line.338"></a> |
| <FONT color="green">339</FONT> <a name="line.339"></a> |
| <FONT color="green">340</FONT> FilterExprWalker walker = (FilterExprWalker)expr;<a name="line.340"></a> |
| <FONT color="green">341</FONT> if(!m_expr.deepEquals(walker.m_expr))<a name="line.341"></a> |
| <FONT color="green">342</FONT> return false;<a name="line.342"></a> |
| <FONT color="green">343</FONT> <a name="line.343"></a> |
| <FONT color="green">344</FONT> return true;<a name="line.344"></a> |
| <FONT color="green">345</FONT> }<a name="line.345"></a> |
| <FONT color="green">346</FONT> <a name="line.346"></a> |
| <FONT color="green">347</FONT> <a name="line.347"></a> |
| <FONT color="green">348</FONT> <a name="line.348"></a> |
| <FONT color="green">349</FONT> }<a name="line.349"></a> |
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| </PRE> |
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| </HTML> |
