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<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd">
<section id="JCR.NodeNameConstraint">
  <title>Node Name Constraint</title>

  <para>Find all nodes with primary type 'nt:file' whose node name is
  'document'. The node name is accessible by a function called
  "fn:name()".</para>

  <note>
    <para>fn:name() can be used ONLY with an equal('=') comparison.</para>
  </note>

  <section id="JCR.NodeNameConstraint.RepositoryStructure">
    <title>Repository Structure</title>

    <para>The repository contains nt:file nodes with different names.</para>

    <itemizedlist>
      <listitem>
        <para>root</para>

        <itemizedlist>
          <listitem>
            <para>document1 (nt:file)</para>
          </listitem>

          <listitem>
            <para>file (nt:file)</para>
          </listitem>

          <listitem>
            <para>somename (nt:file)</para>
          </listitem>
        </itemizedlist>
      </listitem>
    </itemizedlist>
  </section>

  <section id="JCR.NodeNameConstraint.QueryExecution">
    <title>Query execution</title>

    <para><emphasis role="bold">SQL</emphasis></para>

    <programlisting language="java">// make SQL query
QueryManager queryManager = workspace.getQueryManager();
// create query
String sqlStatement = "SELECT * FROM nt:file WHERE fn:name() = 'document'";
Query query = queryManager.createQuery(sqlStatement, Query.SQL);
// execute query and fetch result
QueryResult result = query.execute();</programlisting>

    <para><emphasis role="bold">XPath</emphasis></para>

    <programlisting language="java">// make XPath query
QueryManager queryManager = workspace.getQueryManager();
// create query
String xpathStatement = "//element(*,nt:file)[fn:name() = 'document']";
Query query = queryManager.createQuery(xpathStatement, Query.XPATH);
// execute query and fetch result
QueryResult result = query.execute();</programlisting>
  </section>

  <section id="JCR.NodeNameConstraint.FetchingResult">
    <title>Fetching the Result</title>

    <para>Let's get nodes:</para>

    <programlisting language="java">NodeIterator it = result.getNodes();

if(it.hasNext())
{
   Node findedNode = it.nextNode();
}</programlisting>

    <para>The NodeIterator will return the node whose fn:name equals
    "document".</para>

    <para>Also we can get a table:</para>

    <programlisting language="java">String[] columnNames = result.getColumnNames();
RowIterator rit = result.getRows();
while (rit.hasNext())
{
   Row row = rit.nextRow();
   // get values of the row
   Value[] values = row.getValues();
}</programlisting>

    <para>Table content is: <table>
        <title>Table content</title>

        <tgroup cols="2">
          <thead>
            <row>
              <entry>jcr:path</entry>

              <entry>jcr:score</entry>
            </row>
          </thead>

          <tbody>
            <row>
              <entry>/document1</entry>

              <entry>3575</entry>
            </row>
          </tbody>
        </tgroup>
      </table></para>
  </section>
</section>
