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<div class="subTitle">edu.ucsb.nceas.metacat</div>
<h2 title="Class NodeComparator" class="title">Class NodeComparator</h2>
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<li>java.lang.Object</li>
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<li>edu.ucsb.nceas.metacat.NodeComparator</li>
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<pre>public class <span class="typeNameLabel">NodeComparator</span>
extends java.lang.Object
implements java.util.Comparator</pre>
<div class="block">A utility class that sorts two node records.
<p>
The order of the records
determines how the XML document is printed from DocumentImpl.toXml(),
so it is important that the sort order specified here results in a depth
first traversal of the nodes in tree. Currently, the nodes are inserted
into the database in this depth-forst order, so the nodeid identifiers
are a good indicator of the proper sort order.
<p>
However, if we modify data loading semantics to allow document nodes to
be rearranged, or otherwise change the nodeindex value, this current
sort algorithm will fail to work.</div>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../edu/ucsb/nceas/metacat/NodeComparator.html#NodeComparator--">NodeComparator</a></span>()</code>
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<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../edu/ucsb/nceas/metacat/NodeComparator.html#compare-edu.ucsb.nceas.metacat.NodeRecord-edu.ucsb.nceas.metacat.NodeRecord-">compare</a></span>(<a href="../../../../edu/ucsb/nceas/metacat/NodeRecord.html" title="class in edu.ucsb.nceas.metacat">NodeRecord</a> o1,
<a href="../../../../edu/ucsb/nceas/metacat/NodeRecord.html" title="class in edu.ucsb.nceas.metacat">NodeRecord</a> o2)</code>
<div class="block">compare two NodeRecord objects to determine proper sort order.</div>
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<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../edu/ucsb/nceas/metacat/NodeComparator.html#compare-java.lang.Object-java.lang.Object-">compare</a></span>(java.lang.Object o1,
java.lang.Object o2)</code>
<div class="block">compare two objects to determine proper sort order -- delegates to
the compare(NodeRecord, NodeRecord) method.</div>
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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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<h3>Methods inherited from interface java.util.Comparator</h3>
<code>comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong</code></li>
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<h4>NodeComparator</h4>
<pre>public NodeComparator()</pre>
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<h4>compare</h4>
<pre>public int compare(java.lang.Object o1,
java.lang.Object o2)</pre>
<div class="block">compare two objects to determine proper sort order -- delegates to
the compare(NodeRecord, NodeRecord) method.</div>
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<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>compare</code> in interface <code>java.util.Comparator</code></dd>
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<h4>compare</h4>
<pre>public int compare(<a href="../../../../edu/ucsb/nceas/metacat/NodeRecord.html" title="class in edu.ucsb.nceas.metacat">NodeRecord</a> o1,
<a href="../../../../edu/ucsb/nceas/metacat/NodeRecord.html" title="class in edu.ucsb.nceas.metacat">NodeRecord</a> o2)</pre>
<div class="block">compare two NodeRecord objects to determine proper sort order. The
node records are equal if their nodeid fields are equal. One is
less than another if its parentnodeid is less, or if its parentnodeid
is equal and its nodeindex is less. One is greater than another if
its parentnodeid is greater, or if its parentnodeid is equal and
its nodeindex is greater.</div>
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