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<!--Id: xmlresults_class.so,v 1.8 2002/07/29 04:20:27 mjc Exp -->
<!--Copyright 1997-2002 by Sleepycat Software, Inc.-->
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<title>Berkeley DB: XmlResults</title>
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<h1>XmlResults</h1>
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<a href="../api_cxx/c_index.html"><img src="../images/api.gif" alt="API"></a><a href="../reftoc.html"><img src="../images/ref.gif" alt="Ref"></a>
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<tt>
<h3><pre>
#include <DbXml.hpp>
<p>
class DbXml::XmlResults {
public:
XmlResults(const XmlResults &);
~XmlResults();
XmlResults &operator = (const XmlResults &)
...
};
</pre></h3>
<h1>Description</h1>
<p>The XmlResults class encapsulates the results of a query against
an <a href="../api_cxx/xmlcontainer_class.html">XmlContainer</a>.
<p>The results of a query are a collection of <a href="../api_cxx/xmlvalue_class.html">XmlValue</a>s. The
<a href="../api_cxx/xmlvalue_class.html">XmlValue</a>s may be either documents or nodesets. If the query
context selected a return type of <a href="../api_cxx/xmlq_setret.html#XmlQueryContext::ResultValues">XmlQueryContext::ResultValues</a>
then the values will be of type NodeListValue, otherwise they will be
of type DocumentValue.
<p>An XmlResults object is created by calling <a href="../api_cxx/xml_xpath.html">XmlContainer::queryWithXPath</a>.
If the query context called for lazy expression evaluation then the
resultant values will be computed as needed. If eager evaluation was
selected the resultant values are stored within the XmlResults
object.
<p>XmlResults provides an iteration interface through its next()
method. When there are no more values available the passed back value
pointer will be zero. If eager evaluation was selected then the reset
method can be called to reset the iterator, and the next call to next()
will return the first value of the results.
<h1>Class</h1>
<a href="../api_cxx/xmlcontainer_class.html">XmlContainer</a>, <a href="../api_cxx/xmldocument_class.html">XmlDocument</a>, <a href="../api_cxx/xmlquery_class.html">XmlQueryContext</a>
<h1>See Also</h1>
<a href="../api_cxx/xml_close.html">XmlContainer::close</a>,
<a href="../api_cxx/xml_declare.html">XmlContainer::declareIndex</a>,
<a href="../api_cxx/xml_del.html">XmlContainer::deleteDocument</a>,
<a href="../api_cxx/xml_get.html">XmlContainer::getDocument</a>,
<a href="../api_cxx/xml_getname.html">XmlContainer::getName</a>,
<a href="../api_cxx/xml_open.html">XmlContainer::open</a>,
<a href="../api_cxx/xml_put.html">XmlContainer::putDocument</a>
and
<a href="../api_cxx/xml_xpath.html">XmlContainer::queryWithXPath</a>.
<p>
<a href="../api_cxx/xmldoc_getattr.html">XmlDocument::getAttributeValue</a>,
<a href="../api_cxx/xmldoc_getcont.html">XmlDocument::getContent</a>,
<a href="../api_cxx/xmldoc_getid.html">XmlDocument::getID</a>,
<a href="../api_cxx/xmldoc_getname.html">XmlDocument::getName</a>,
<a href="../api_cxx/xmldoc_gettype.html">XmlDocument::getType</a>,
<a href="../api_cxx/xmldoc_setcont.html">XmlDocument::setContent</a>,
<a href="../api_cxx/xmldoc_setname.html">XmlDocument::setName</a>,
and
<a href="../api_cxx/xmldoc_settype.html">XmlDocument::setType</a>.
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