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| <h2 title="Class ExpressionVisitor" class="title">Class ExpressionVisitor</h2> |
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| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
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| <li><a href="../../../../org/apache/xpath/XPathVisitor.html" title="class in org.apache.xpath">org.apache.xpath.XPathVisitor</a></li> |
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| <li>org.apache.xalan.extensions.ExpressionVisitor</li> |
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| <pre>public class <span class="typeNameLabel">ExpressionVisitor</span> |
| extends <a href="../../../../org/apache/xpath/XPathVisitor.html" title="class in org.apache.xpath">XPathVisitor</a></pre> |
| <div class="block">When <a href="../../../../org/apache/xalan/processor/StylesheetHandler.html" title="class in org.apache.xalan.processor"><code>StylesheetHandler</code></a> creates |
| an <a href="../../../../org/apache/xpath/XPath.html" title="class in org.apache.xpath"><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.</div> |
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| <th class="colOne" scope="col">Constructor and Description</th> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/xalan/extensions/ExpressionVisitor.html#ExpressionVisitor-org.apache.xalan.templates.StylesheetRoot-">ExpressionVisitor</a></span>(<a href="../../../../org/apache/xalan/templates/StylesheetRoot.html" title="class in org.apache.xalan.templates">StylesheetRoot</a> sroot)</code> |
| <div class="block">The constructor sets the StylesheetRoot variable which |
| is used to register extension namespaces.</div> |
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| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/xalan/extensions/ExpressionVisitor.html#visitFunction-org.apache.xpath.ExpressionOwner-org.apache.xpath.functions.Function-">visitFunction</a></span>(<a href="../../../../org/apache/xpath/ExpressionOwner.html" title="interface in org.apache.xpath">ExpressionOwner</a> owner, |
| <a href="../../../../org/apache/xpath/functions/Function.html" title="class in org.apache.xpath.functions">Function</a> func)</code> |
| <div class="block">If the function is an extension function, register the namespace.</div> |
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| <h3>Methods inherited from class org.apache.xpath.<a href="../../../../org/apache/xpath/XPathVisitor.html" title="class in org.apache.xpath">XPathVisitor</a></h3> |
| <code><a href="../../../../org/apache/xpath/XPathVisitor.html#visitBinaryOperation-org.apache.xpath.ExpressionOwner-org.apache.xpath.operations.Operation-">visitBinaryOperation</a>, <a href="../../../../org/apache/xpath/XPathVisitor.html#visitLocationPath-org.apache.xpath.ExpressionOwner-org.apache.xpath.axes.LocPathIterator-">visitLocationPath</a>, <a href="../../../../org/apache/xpath/XPathVisitor.html#visitMatchPattern-org.apache.xpath.ExpressionOwner-org.apache.xpath.patterns.StepPattern-">visitMatchPattern</a>, <a href="../../../../org/apache/xpath/XPathVisitor.html#visitNumberLiteral-org.apache.xpath.ExpressionOwner-org.apache.xpath.objects.XNumber-">visitNumberLiteral</a>, <a href="../../../../org/apache/xpath/XPathVisitor.html#visitPredicate-org.apache.xpath.ExpressionOwner-org.apache.xpath.Expression-">visitPredicate</a>, <a href="../../../../org/apache/xpath/XPathVisitor.html#visitStep-org.apache.xpath.ExpressionOwner-org.apache.xpath.patterns.NodeTest-">visitStep</a>, <a href="../../../../org/apache/xpath/XPathVisitor.html#visitStringLiteral-org.apache.xpath.ExpressionOwner-org.apache.xpath.objects.XString-">visitStringLiteral</a>, <a href="../../../../org/apache/xpath/XPathVisitor.html#visitUnaryOperation-org.apache.xpath.ExpressionOwner-org.apache.xpath.operations.UnaryOperation-">visitUnaryOperation</a>, <a href="../../../../org/apache/xpath/XPathVisitor.html#visitUnionPath-org.apache.xpath.ExpressionOwner-org.apache.xpath.axes.UnionPathIterator-">visitUnionPath</a>, <a href="../../../../org/apache/xpath/XPathVisitor.html#visitUnionPattern-org.apache.xpath.ExpressionOwner-org.apache.xpath.patterns.UnionPattern-">visitUnionPattern</a>, <a href="../../../../org/apache/xpath/XPathVisitor.html#visitVariableRef-org.apache.xpath.ExpressionOwner-org.apache.xpath.operations.Variable-">visitVariableRef</a></code></li> |
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| <h3>Methods inherited from class java.lang.Object</h3> |
| <code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li> |
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| <h4>ExpressionVisitor</h4> |
| <pre>public ExpressionVisitor(<a href="../../../../org/apache/xalan/templates/StylesheetRoot.html" title="class in org.apache.xalan.templates">StylesheetRoot</a> sroot)</pre> |
| <div class="block">The constructor sets the StylesheetRoot variable which |
| is used to register extension namespaces.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>sroot</code> - the StylesheetRoot that is being constructed.</dd> |
| </dl> |
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| <h4>visitFunction</h4> |
| <pre>public boolean visitFunction(<a href="../../../../org/apache/xpath/ExpressionOwner.html" title="interface in org.apache.xpath">ExpressionOwner</a> owner, |
| <a href="../../../../org/apache/xpath/functions/Function.html" title="class in org.apache.xpath.functions">Function</a> func)</pre> |
| <div class="block">If the function is an extension function, register the namespace.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../../../../org/apache/xpath/XPathVisitor.html#visitFunction-org.apache.xpath.ExpressionOwner-org.apache.xpath.functions.Function-">visitFunction</a></code> in class <code><a href="../../../../org/apache/xpath/XPathVisitor.html" title="class in org.apache.xpath">XPathVisitor</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>owner</code> - The current XPath object that owns the expression.</dd> |
| <dd><code>func</code> - The function currently being visited.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true to continue the visit in the subtree, if any.</dd> |
| </dl> |
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