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| Xalan-Java 2.7.1: Class ExpressionVisitor
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| Class ExpressionVisitor</H2>
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| <PRE>
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| java.lang.Object
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| |
|
| +--<A HREF="../../../../org/apache/xpath/XPathVisitor.html">org.apache.xpath.XPathVisitor</A>
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| |
|
| +--<B>org.apache.xalan.extensions.ExpressionVisitor</B>
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| </PRE>
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| <DL>
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| <DT>public class <B>ExpressionVisitor</B><DT>extends <A HREF="../../../../org/apache/xpath/XPathVisitor.html">XPathVisitor</A></DL>
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| <P>
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| When <A HREF="../../../../org/apache/xalan/processor/StylesheetHandler.html"><CODE>StylesheetHandler</CODE></A> creates |
| an <A HREF="../../../../org/apache/xpath/XPath.html"><CODE>XPath</CODE></A>, the ExpressionVisitor |
| visits the XPath expression. For any extension functions it |
| encounters, it instructs StylesheetRoot to register the |
| extension namespace. |
| |
| This mechanism is required to locate extension functions |
| that may be embedded within an expression.
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| <B>Constructor Summary</B></FONT></TD>
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| <TD><CODE><B><A HREF="../../../../org/apache/xalan/extensions/ExpressionVisitor.html#ExpressionVisitor(org.apache.xalan.templates.StylesheetRoot)">ExpressionVisitor</A></B>(<A HREF="../../../../org/apache/xalan/templates/StylesheetRoot.html">StylesheetRoot</A> sroot)</CODE>
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| <BR>
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| The constructor sets the StylesheetRoot variable which |
| is used to register extension namespaces.</TD>
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| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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| <CODE> boolean</CODE></FONT></TD>
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| <TD><CODE><B><A HREF="../../../../org/apache/xalan/extensions/ExpressionVisitor.html#visitFunction(org.apache.xpath.ExpressionOwner, org.apache.xpath.functions.Function)">visitFunction</A></B>(<A HREF="../../../../org/apache/xpath/ExpressionOwner.html">ExpressionOwner</A> owner, |
| <A HREF="../../../../org/apache/xpath/functions/Function.html">Function</A> func)</CODE>
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| <BR>
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| If the function is an extension function, register the namespace.</TD>
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| </TR>
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| </TABLE>
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| <A NAME="methods_inherited_from_class_org.apache.xpath.XPathVisitor"><!-- --></A> |
| <TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
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| <TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
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| <TD><B>Methods inherited from class org.apache.xpath.<A HREF="../../../../org/apache/xpath/XPathVisitor.html">XPathVisitor</A></B></TD>
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| </TR>
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| <TR BGCOLOR="white" CLASS="TableRowColor">
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| <TD><CODE><A HREF="../../../../org/apache/xpath/XPathVisitor.html#visitBinaryOperation(org.apache.xpath.ExpressionOwner, org.apache.xpath.operations.Operation)">visitBinaryOperation</A>,
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| <A HREF="../../../../org/apache/xpath/XPathVisitor.html#visitLocationPath(org.apache.xpath.ExpressionOwner, org.apache.xpath.axes.LocPathIterator)">visitLocationPath</A>,
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| <A HREF="../../../../org/apache/xpath/XPathVisitor.html#visitMatchPattern(org.apache.xpath.ExpressionOwner, org.apache.xpath.patterns.StepPattern)">visitMatchPattern</A>,
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| <A HREF="../../../../org/apache/xpath/XPathVisitor.html#visitNumberLiteral(org.apache.xpath.ExpressionOwner, org.apache.xpath.objects.XNumber)">visitNumberLiteral</A>,
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| <A HREF="../../../../org/apache/xpath/XPathVisitor.html#visitPredicate(org.apache.xpath.ExpressionOwner, org.apache.xpath.Expression)">visitPredicate</A>,
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| <A HREF="../../../../org/apache/xpath/XPathVisitor.html#visitStep(org.apache.xpath.ExpressionOwner, org.apache.xpath.patterns.NodeTest)">visitStep</A>,
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| <A HREF="../../../../org/apache/xpath/XPathVisitor.html#visitStringLiteral(org.apache.xpath.ExpressionOwner, org.apache.xpath.objects.XString)">visitStringLiteral</A>,
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| <A HREF="../../../../org/apache/xpath/XPathVisitor.html#visitUnaryOperation(org.apache.xpath.ExpressionOwner, org.apache.xpath.operations.UnaryOperation)">visitUnaryOperation</A>,
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| <A HREF="../../../../org/apache/xpath/XPathVisitor.html#visitUnionPath(org.apache.xpath.ExpressionOwner, org.apache.xpath.axes.UnionPathIterator)">visitUnionPath</A>,
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| <A HREF="../../../../org/apache/xpath/XPathVisitor.html#visitUnionPattern(org.apache.xpath.ExpressionOwner, org.apache.xpath.patterns.UnionPattern)">visitUnionPattern</A>,
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| <A HREF="../../../../org/apache/xpath/XPathVisitor.html#visitVariableRef(org.apache.xpath.ExpressionOwner, org.apache.xpath.operations.Variable)">visitVariableRef</A></CODE></TD>
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| <TD><B>Methods inherited from class java.lang.Object</B></TD>
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| </TR>
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| <TR BGCOLOR="white" CLASS="TableRowColor">
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| <TD><CODE>equals,
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| getClass,
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| hashCode,
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| notify,
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| notifyAll,
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| toString,
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| wait,
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| wait,
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| wait</CODE></TD>
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| </TR>
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| <!-- ============ FIELD DETAIL =========== -->
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| <A NAME="ExpressionVisitor(org.apache.xalan.templates.StylesheetRoot)"><!-- --></A><H3>
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| ExpressionVisitor</H3>
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| <PRE>
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| public <B>ExpressionVisitor</B>(<A HREF="../../../../org/apache/xalan/templates/StylesheetRoot.html">StylesheetRoot</A> sroot)</PRE>
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| <DL>
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| <DD>The constructor sets the StylesheetRoot variable which |
| is used to register extension namespaces.<DD><DL>
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| <DT><B>Parameters:</B><DD><CODE>sroot</CODE> - the StylesheetRoot that is being constructed.</DL>
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| </DD>
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| <A NAME="visitFunction(org.apache.xpath.ExpressionOwner, org.apache.xpath.functions.Function)"><!-- --></A><H3>
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| visitFunction</H3>
|
| <PRE>
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| public boolean <B>visitFunction</B>(<A HREF="../../../../org/apache/xpath/ExpressionOwner.html">ExpressionOwner</A> owner, |
| <A HREF="../../../../org/apache/xpath/functions/Function.html">Function</A> func)</PRE>
|
| <DL>
|
| <DD>If the function is an extension function, register the namespace.<DD><DL>
|
| <DT><B>Parameters:</B><DD><CODE>owner</CODE> - The current XPath object that owns the expression.<DD><CODE>func</CODE> - The function currently being visited.<DT><B>Returns:</B><DD>true to continue the visit in the subtree, if any.<DT><B>Overrides:</B><DD><A HREF="../../../../org/apache/xpath/XPathVisitor.html#visitFunction(org.apache.xpath.ExpressionOwner, org.apache.xpath.functions.Function)">visitFunction</A> in class <A HREF="../../../../org/apache/xpath/XPathVisitor.html">XPathVisitor</A></DL>
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