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<link title="Example_readme" rel="Chapter" href="Example_readme.html"><title>PXP Reference : Pxp_reader.combine</title>
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<center><h1>Class <a href="type_Pxp_reader.combine.html">Pxp_reader.combine</a></h1></center>
<br>
<pre><span class="keyword">class</span> <a name="TYPEcombine"></a>combine : <code class="type">?mode:<a href="Pxp_reader.html#TYPEcombination_mode">combination_mode</a> -> <a href="Pxp_reader.resolver.html">resolver</a> list -> </code><code class="type"><a href="Pxp_reader.resolver.html">resolver</a></code></pre>Combines several resolver objects. If a concrete entity with an
<code class="code">ext_id</code> is to be opened, the combined resolver tries the contained
resolvers in turn until a resolver accepts opening the entity
(i.e. until a resolver does not raise <code class="code"><span class="constructor">Not_competent</span></code> on <code class="code">open_rid</code>).
<p>
If the entity to open has several names, e.g. a public name and
a system name, these names are tried in parallel by default.
For backward compatibility, the
<code class="code">mode</code> argument allows one to specify a different order:
<p>
<ul>
<li><code class="code"><span class="constructor">Public_before_system</span></code>:
Try first to open as public identifier, and if that fails,
fall back to the system identifier </li>
<li><code class="code"><span class="constructor">System_before_public</span></code>:
Try first to open as system identifier, and if that fails,
fall back to the public identifier</li>
</ul>
Clones: If the <code class="code">clone</code> method is invoked on the combined resolver
while it is closed, the effect is that all contained
resolvers are cloned and the combination is repeated on the clones.
If the <code class="code">clone</code> method is
invoked while the resolver is open, only the
active sub resolver is cloned (i.e. the resolver that accepted the
ID in the first place).<br>
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distrib
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Mandriva
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2010.0
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i586
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media
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contrib-release
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by-pkgid
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d9c1887ff364dc87e282490223567c41
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files
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165
