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<title>com.amazon.carbonado.layout (Carbonado 1.2.3 API)</title>
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<h1 title="Package" class="title">Package com.amazon.carbonado.layout</h1>
<div class="docSummary">
<div class="block">Support for recording the evolution of a storable's layout, used internally
by some repositories.</div>
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<p>See: <a href="#package_description">Description</a></p>
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<table class="packageSummary" border="0" cellpadding="3" cellspacing="0" summary="Interface Summary table, listing interfaces, and an explanation">
<caption><span>Interface Summary</span><span class="tabEnd"> </span></caption>
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<th class="colFirst" scope="col">Interface</th>
<th class="colLast" scope="col">Description</th>
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<td class="colFirst"><a href="../../../../com/amazon/carbonado/layout/LayoutCapability.html" title="interface in com.amazon.carbonado.layout">LayoutCapability</a></td>
<td class="colLast">
<div class="block">Capability to get layout information on any storable generation.</div>
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</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../com/amazon/carbonado/layout/StoredLayout.html" title="interface in com.amazon.carbonado.layout">StoredLayout</a></td>
<td class="colLast">
<div class="block">Stored information regarding the layout of a Storable type, which is used
internally by <a href="../../../../com/amazon/carbonado/layout/Layout.html" title="class in com.amazon.carbonado.layout"><code>Layout</code></a>.</div>
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<tr class="altColor">
<td class="colFirst"><a href="../../../../com/amazon/carbonado/layout/StoredLayoutEquivalence.html" title="interface in com.amazon.carbonado.layout">StoredLayoutEquivalence</a></td>
<td class="colLast">
<div class="block">Maps layout generations which are equivalent.</div>
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<td class="colFirst"><a href="../../../../com/amazon/carbonado/layout/StoredLayoutProperty.html" title="interface in com.amazon.carbonado.layout">StoredLayoutProperty</a></td>
<td class="colLast">
<div class="block">Stored property joined to a <a href="../../../../com/amazon/carbonado/layout/StoredLayout.html" title="interface in com.amazon.carbonado.layout"><code>StoredLayout</code></a>, which is used internally
by <a href="../../../../com/amazon/carbonado/layout/LayoutProperty.html" title="class in com.amazon.carbonado.layout"><code>LayoutProperty</code></a>.</div>
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<td class="colFirst"><a href="../../../../com/amazon/carbonado/layout/Unevolvable.html" title="interface in com.amazon.carbonado.layout">Unevolvable</a></td>
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<div class="block">Marker interface for storables that are not allowed to evolve.</div>
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<th class="colFirst" scope="col">Class</th>
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<td class="colFirst"><a href="../../../../com/amazon/carbonado/layout/Layout.html" title="class in com.amazon.carbonado.layout">Layout</a></td>
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<div class="block">Describes the layout of a specific generation of a storable.</div>
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<td class="colFirst"><a href="../../../../com/amazon/carbonado/layout/LayoutFactory.html" title="class in com.amazon.carbonado.layout">LayoutFactory</a></td>
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<div class="block">Factory for obtaining references to storable layouts.</div>
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<td class="colFirst"><a href="../../../../com/amazon/carbonado/layout/LayoutOptions.html" title="class in com.amazon.carbonado.layout">LayoutOptions</a></td>
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<div class="block">Extra options encoded with a Storable layout.</div>
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<td class="colFirst"><a href="../../../../com/amazon/carbonado/layout/LayoutProperty.html" title="class in com.amazon.carbonado.layout">LayoutProperty</a></td>
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<div class="block">Describes how a property is defined in a specific generation of a storable.</div>
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<td class="colFirst"><a href="../../../../com/amazon/carbonado/layout/LayoutSync.html" title="class in com.amazon.carbonado.layout">LayoutSync</a></td>
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<div class="block">Synchronizes layout metadata between two repositories.</div>
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<h2 title="Package com.amazon.carbonado.layout Description">Package com.amazon.carbonado.layout Description</h2>
<div class="block">Support for recording the evolution of a storable's layout, used internally
by some repositories. This allows storable's to evolve. Enough information
is recorded in the <a href="../../../../com/amazon/carbonado/layout/Layout.html" title="class in com.amazon.carbonado.layout"><code>layout</code></a> such
that an older generation can be reconstructed, allowing it to be decoded
from persistent storage.
<p>A storable generation is different than a storable <a href="../../../../com/amazon/carbonado/Version.html" title="annotation in com.amazon.carbonado"><code>version</code></a>. The version increases with each
update of an <i>instance</i>, whereas the generation increases when the
storable type definition changes. The version number is stored with each
instance, and the generation is stored via the classes in this package.
<p>Whenever a property is added or removed from a storable, the storable
layout is assigned a new generation value. If the storable layout reverts to
a previous generation's layout, no new generation value is created. Instead,
the generation value of the current storable will match the previous
generation.</div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../com/amazon/carbonado/layout/LayoutFactory.html" title="class in com.amazon.carbonado.layout"><code>LayoutFactory</code></a></dd></dl>
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<p class="legalCopy"><small>Copyright © 2006-2013 <a href="https://github.com/Carbonado/Carbonado">Amazon Technologies, Inc.</a>. All Rights Reserved.</small></p>
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