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<title>com.amazon.carbonado.lob (Carbonado 1.2.3 API)</title>
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<h1 title="Package" class="title">Package com.amazon.carbonado.lob</h1>
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<div class="block">Support for LOB property types, which are Large OBjects.</div>
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<p>See: <a href="#package_description">Description</a></p>
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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/lob/Blob.html" title="interface in com.amazon.carbonado.lob">Blob</a></td>
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<div class="block">Provides access to BLOBs, which are Binary Large OBjects.</div>
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<td class="colFirst"><a href="../../../../com/amazon/carbonado/lob/Clob.html" title="interface in com.amazon.carbonado.lob">Clob</a></td>
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<div class="block">Provides access to CLOBs, which are Character Large OBjects.</div>
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<td class="colFirst"><a href="../../../../com/amazon/carbonado/lob/Lob.html" title="interface in com.amazon.carbonado.lob">Lob</a></td>
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<div class="block">Marker interface for <a href="../../../../com/amazon/carbonado/lob/Blob.html" title="interface in com.amazon.carbonado.lob"><code>Blobs</code></a> and <a href="../../../../com/amazon/carbonado/lob/Clob.html" title="interface in com.amazon.carbonado.lob"><code>Clobs</code></a>.</div>
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<td class="colFirst"><a href="../../../../com/amazon/carbonado/lob/AbstractBlob.html" title="class in com.amazon.carbonado.lob">AbstractBlob</a></td>
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<div class="block">AbstractBlob implements a small set of common Blob methods.</div>
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<td class="colFirst"><a href="../../../../com/amazon/carbonado/lob/AbstractClob.html" title="class in com.amazon.carbonado.lob">AbstractClob</a></td>
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<div class="block">AbstractClob implements a small set of common Clob methods.</div>
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<td class="colFirst"><a href="../../../../com/amazon/carbonado/lob/BlobClob.html" title="class in com.amazon.carbonado.lob">BlobClob</a></td>
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<div class="block">A Clob implementation which is backed by a Blob.</div>
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<td class="colFirst"><a href="../../../../com/amazon/carbonado/lob/ByteArrayBlob.html" title="class in com.amazon.carbonado.lob">ByteArrayBlob</a></td>
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<div class="block">Implementation of a Blob which is backed by a growable in-memory byte array.</div>
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<td class="colFirst"><a href="../../../../com/amazon/carbonado/lob/CharArrayClob.html" title="class in com.amazon.carbonado.lob">CharArrayClob</a></td>
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<div class="block">Implementation of a Clob which is backed by a growable in-memory character
array.</div>
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<td class="colFirst"><a href="../../../../com/amazon/carbonado/lob/FileBlob.html" title="class in com.amazon.carbonado.lob">FileBlob</a></td>
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<div class="block">Implementation of a Blob which is backed by a File.</div>
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<div class="block">Implementation of a Clob which is backed by a read-only String.</div>
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<h2 title="Package com.amazon.carbonado.lob Description">Package com.amazon.carbonado.lob Description</h2>
<div class="block">Support for LOB property types, which are Large OBjects. Properties declared
as <a href="../../../../com/amazon/carbonado/lob/Blob.html" title="interface in com.amazon.carbonado.lob"><code>Blob</code></a> or <a href="../../../../com/amazon/carbonado/lob/Clob.html" title="interface in com.amazon.carbonado.lob"><code>Clob</code></a> are treated differently than regular
properties. In particular:
<ul>
<li>Repository typically stores LOB data external from enclosing storable
<li>LOBs are accessed in a manner similar to how files are accessed
<li>LOB data is often read/written in chunks, so consider accessing in a transaction scope
<li>LOBs cannot be annotated with <a href="../../../../com/amazon/carbonado/PrimaryKey.html" title="annotation in com.amazon.carbonado"><code>PrimaryKey</code></a>, <a href="../../../../com/amazon/carbonado/Key.html" title="annotation in com.amazon.carbonado"><code>Key</code></a>, <a href="../../../../com/amazon/carbonado/Index.html" title="annotation in com.amazon.carbonado"><code>Index</code></a>, <a href="../../../../com/amazon/carbonado/Join.html" title="annotation in com.amazon.carbonado"><code>Join</code></a>,
<a href="../../../../com/amazon/carbonado/Version.html" title="annotation in com.amazon.carbonado"><code>Version</code></a>, or <a href="../../../../com/amazon/carbonado/Sequence.html" title="annotation in com.amazon.carbonado"><code>Sequence</code></a>
<li>LOBs cannot be used in a <a href="../../../../com/amazon/carbonado/Storage.html#query(java.lang.String)"><code>query filter</code></a>
</ul>
<p>Also, setting a LOB property does not dirty that property unless the new
LOB is unequal. Updating a LOB property typically involves operating on the
LOB itself. Setting the LOB property again is useful only when completely
replacing the data, which can be a relatively expensive operation.
<p>Some repositories require that large text data be stored as a LOB. If the
text property is intended to fit entirely in memory, consider defining the
property as a String instead of a LOB. This allows the repository to decide
if it is appropriate to store it as a LOB. If explicit control over charset
encoding is required, add a <a href="../../../../com/amazon/carbonado/adapter/TextAdapter.html" title="annotation in com.amazon.carbonado.adapter"><code>TextAdapter</code></a> annotation.</div>
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