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stasis/je-7.5.11/docs/java/com/sleepycat/bind/serial/TupleSerialKeyCreator.html
Greg Burd 1d088e4a23 initial import
2019-06-25 16:12:40 -04:00

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<h2 title="Class TupleSerialKeyCreator" class="title">Class TupleSerialKeyCreator&lt;D&gt;</h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
<li>
<ul class="inheritance">
<li><a href="../../../../com/sleepycat/bind/tuple/TupleBase.html" title="class in com.sleepycat.bind.tuple">com.sleepycat.bind.tuple.TupleBase</a></li>
<li>
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<li>com.sleepycat.bind.serial.TupleSerialKeyCreator&lt;D&gt;</li>
</ul>
</li>
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<dt>All Implemented Interfaces:</dt>
<dd><a href="../../../../com/sleepycat/je/ForeignKeyNullifier.html" title="interface in com.sleepycat.je">ForeignKeyNullifier</a>, <a href="../../../../com/sleepycat/je/SecondaryKeyCreator.html" title="interface in com.sleepycat.je">SecondaryKeyCreator</a></dd>
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<dl>
<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../../com/sleepycat/bind/serial/TupleSerialMarshalledKeyCreator.html" title="class in com.sleepycat.bind.serial">TupleSerialMarshalledKeyCreator</a></dd>
</dl>
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<pre>public abstract class <span class="typeNameLabel">TupleSerialKeyCreator&lt;D&gt;</span>
extends <a href="../../../../com/sleepycat/bind/tuple/TupleBase.html" title="class in com.sleepycat.bind.tuple">TupleBase</a>
implements <a href="../../../../com/sleepycat/je/SecondaryKeyCreator.html" title="interface in com.sleepycat.je">SecondaryKeyCreator</a>, <a href="../../../../com/sleepycat/je/ForeignKeyNullifier.html" title="interface in com.sleepycat.je">ForeignKeyNullifier</a></pre>
<div class="block">A abstract key creator that uses a tuple key and a serial data entry. This
class takes care of serializing and deserializing the data entry, and
converting the key entry to/from <a href="../../../../com/sleepycat/bind/tuple/TupleInput.html" title="class in com.sleepycat.bind.tuple"><code>TupleInput</code></a> and <a href="../../../../com/sleepycat/bind/tuple/TupleOutput.html" title="class in com.sleepycat.bind.tuple"><code>TupleOutput</code></a>
objects.
The following abstract method must be implemented by a concrete subclass
to create the index key using these objects
<ul>
<li> <a href="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html#createSecondaryKey-com.sleepycat.bind.tuple.TupleInput-D-com.sleepycat.bind.tuple.TupleOutput-"><code>createSecondaryKey(TupleInput,Object,TupleOutput)</code></a> </li>
</ul>
<p>If <a href="../../../../com/sleepycat/je/ForeignKeyDeleteAction.html#NULLIFY"><code>ForeignKeyDeleteAction.NULLIFY</code></a> was
specified when opening the secondary database, the following method must be
overridden to nullify the foreign index key. If NULLIFY was not specified,
this method need not be overridden.</p>
<ul>
<li> <a href="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html#nullifyForeignKey-D-"><code>nullifyForeignKey(Object)</code></a> </li>
</ul></div>
<dl>
<dt><span class="simpleTagLabel">Author:</span></dt>
<dd>Mark Hayes</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="SerialBinding.html#evolution">Class Evolution</a></dd>
</dl>
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<td class="colFirst"><code>protected <a href="../../../../com/sleepycat/bind/serial/SerialBinding.html" title="class in com.sleepycat.bind.serial">SerialBinding</a>&lt;<a href="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html" title="type parameter in TupleSerialKeyCreator">D</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html#dataBinding">dataBinding</a></span></code>&nbsp;</td>
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<th class="colOne" scope="col">Constructor and Description</th>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html#TupleSerialKeyCreator-com.sleepycat.bind.serial.ClassCatalog-java.lang.Class-">TupleSerialKeyCreator</a></span>(<a href="../../../../com/sleepycat/bind/serial/ClassCatalog.html" title="interface in com.sleepycat.bind.serial">ClassCatalog</a>&nbsp;classCatalog,
java.lang.Class&lt;<a href="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html" title="type parameter in TupleSerialKeyCreator">D</a>&gt;&nbsp;dataClass)</code>
<div class="block">Creates a tuple-serial key creator.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><code><span class="memberNameLink"><a href="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html#TupleSerialKeyCreator-com.sleepycat.bind.serial.SerialBinding-">TupleSerialKeyCreator</a></span>(<a href="../../../../com/sleepycat/bind/serial/SerialBinding.html" title="class in com.sleepycat.bind.serial">SerialBinding</a>&lt;<a href="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html" title="type parameter in TupleSerialKeyCreator">D</a>&gt;&nbsp;dataBinding)</code>
<div class="block">Creates a tuple-serial key creator.</div>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html#createSecondaryKey-com.sleepycat.je.SecondaryDatabase-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-">createSecondaryKey</a></span>(<a href="../../../../com/sleepycat/je/SecondaryDatabase.html" title="class in com.sleepycat.je">SecondaryDatabase</a>&nbsp;db,
<a href="../../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a>&nbsp;primaryKeyEntry,
<a href="../../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a>&nbsp;dataEntry,
<a href="../../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a>&nbsp;indexKeyEntry)</code>
<div class="block">Creates a secondary key entry, given a primary key and data entry.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>abstract boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html#createSecondaryKey-com.sleepycat.bind.tuple.TupleInput-D-com.sleepycat.bind.tuple.TupleOutput-">createSecondaryKey</a></span>(<a href="../../../../com/sleepycat/bind/tuple/TupleInput.html" title="class in com.sleepycat.bind.tuple">TupleInput</a>&nbsp;primaryKeyInput,
<a href="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html" title="type parameter in TupleSerialKeyCreator">D</a>&nbsp;dataInput,
<a href="../../../../com/sleepycat/bind/tuple/TupleOutput.html" title="class in com.sleepycat.bind.tuple">TupleOutput</a>&nbsp;indexKeyOutput)</code>
<div class="block">Creates the index key entry from primary key tuple entry and
deserialized data entry.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html" title="type parameter in TupleSerialKeyCreator">D</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html#nullifyForeignKey-D-">nullifyForeignKey</a></span>(<a href="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html" title="type parameter in TupleSerialKeyCreator">D</a>&nbsp;data)</code>
<div class="block">Clears the index key in the deserialized data entry.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html#nullifyForeignKey-com.sleepycat.je.SecondaryDatabase-com.sleepycat.je.DatabaseEntry-">nullifyForeignKey</a></span>(<a href="../../../../com/sleepycat/je/SecondaryDatabase.html" title="class in com.sleepycat.je">SecondaryDatabase</a>&nbsp;db,
<a href="../../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a>&nbsp;dataEntry)</code>
<div class="block">Sets the foreign key reference to null in the datum of the primary
database.</div>
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<h3>Methods inherited from class&nbsp;com.sleepycat.bind.tuple.<a href="../../../../com/sleepycat/bind/tuple/TupleBase.html" title="class in com.sleepycat.bind.tuple">TupleBase</a></h3>
<code><a href="../../../../com/sleepycat/bind/tuple/TupleBase.html#entryToInput-com.sleepycat.je.DatabaseEntry-">entryToInput</a>, <a href="../../../../com/sleepycat/bind/tuple/TupleBase.html#getTupleBufferSize--">getTupleBufferSize</a>, <a href="../../../../com/sleepycat/bind/tuple/TupleBase.html#getTupleOutput-E-">getTupleOutput</a>, <a href="../../../../com/sleepycat/bind/tuple/TupleBase.html#inputToEntry-com.sleepycat.bind.tuple.TupleInput-com.sleepycat.je.DatabaseEntry-">inputToEntry</a>, <a href="../../../../com/sleepycat/bind/tuple/TupleBase.html#newOutput--">newOutput</a>, <a href="../../../../com/sleepycat/bind/tuple/TupleBase.html#newOutput-byte:A-">newOutput</a>, <a href="../../../../com/sleepycat/bind/tuple/TupleBase.html#outputToEntry-com.sleepycat.bind.tuple.TupleOutput-com.sleepycat.je.DatabaseEntry-">outputToEntry</a>, <a href="../../../../com/sleepycat/bind/tuple/TupleBase.html#setTupleBufferSize-int-">setTupleBufferSize</a></code></li>
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<h3>Methods inherited from class&nbsp;java.lang.Object</h3>
<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
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<h4>dataBinding</h4>
<pre>protected&nbsp;<a href="../../../../com/sleepycat/bind/serial/SerialBinding.html" title="class in com.sleepycat.bind.serial">SerialBinding</a>&lt;<a href="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html" title="type parameter in TupleSerialKeyCreator">D</a>&gt; dataBinding</pre>
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<h3>Constructor Detail</h3>
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<h4>TupleSerialKeyCreator</h4>
<pre>public&nbsp;TupleSerialKeyCreator(<a href="../../../../com/sleepycat/bind/serial/ClassCatalog.html" title="interface in com.sleepycat.bind.serial">ClassCatalog</a>&nbsp;classCatalog,
java.lang.Class&lt;<a href="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html" title="type parameter in TupleSerialKeyCreator">D</a>&gt;&nbsp;dataClass)</pre>
<div class="block">Creates a tuple-serial key creator.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>classCatalog</code> - is the catalog to hold shared class information and
for a database should be a <a href="../../../../com/sleepycat/bind/serial/StoredClassCatalog.html" title="class in com.sleepycat.bind.serial"><code>StoredClassCatalog</code></a>.</dd>
<dd><code>dataClass</code> - is the data base class.</dd>
</dl>
</li>
</ul>
<a name="TupleSerialKeyCreator-com.sleepycat.bind.serial.SerialBinding-">
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<h4>TupleSerialKeyCreator</h4>
<pre>public&nbsp;TupleSerialKeyCreator(<a href="../../../../com/sleepycat/bind/serial/SerialBinding.html" title="class in com.sleepycat.bind.serial">SerialBinding</a>&lt;<a href="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html" title="type parameter in TupleSerialKeyCreator">D</a>&gt;&nbsp;dataBinding)</pre>
<div class="block">Creates a tuple-serial key creator.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>dataBinding</code> - is the data binding.</dd>
</dl>
</li>
</ul>
</li>
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<h3>Method Detail</h3>
<a name="createSecondaryKey-com.sleepycat.je.SecondaryDatabase-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-">
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<h4>createSecondaryKey</h4>
<pre>public&nbsp;boolean&nbsp;createSecondaryKey(<a href="../../../../com/sleepycat/je/SecondaryDatabase.html" title="class in com.sleepycat.je">SecondaryDatabase</a>&nbsp;db,
<a href="../../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a>&nbsp;primaryKeyEntry,
<a href="../../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a>&nbsp;dataEntry,
<a href="../../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a>&nbsp;indexKeyEntry)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../com/sleepycat/je/SecondaryKeyCreator.html#createSecondaryKey-com.sleepycat.je.SecondaryDatabase-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-">SecondaryKeyCreator</a></code></span></div>
<div class="block">Creates a secondary key entry, given a primary key and data entry.
<p>A secondary key may be derived from the primary key, primary data, or
a combination of the primary key and data. For secondary keys that are
optional, the key creator method may return false and the key/data pair
will not be indexed. To ensure the integrity of a secondary database
the key creator method must always return the same result for a given
set of input parameters.</p>
<p>A <code>RuntimeException</code> may be thrown by this method if an error
occurs attempting to create the secondary key. This exception will be
thrown by the API method currently in progress, for example, a <a href="../../../../com/sleepycat/je/Database.html#put-com.sleepycat.je.Transaction-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.Put-com.sleepycat.je.WriteOptions-"><code>put</code></a> method. However, this will cause the write operation
to be incomplete. When databases are not configured to be
transactional, caution should be used to avoid integrity problems. See
<a href="SecondaryDatabase.html#transactions">Special considerations for
using Secondary Databases with and without Transactions</a>.</p></div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../com/sleepycat/je/SecondaryKeyCreator.html#createSecondaryKey-com.sleepycat.je.SecondaryDatabase-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-">createSecondaryKey</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../com/sleepycat/je/SecondaryKeyCreator.html" title="interface in com.sleepycat.je">SecondaryKeyCreator</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>db</code> - the database to which the secondary key will be
added. This parameter is passed for informational purposes but is not
commonly used. This parameter is always non-null.</dd>
<dd><code>primaryKeyEntry</code> - the primary key entry. This parameter must not be modified
by this method. This parameter is always non-null.</dd>
<dd><code>dataEntry</code> - the primary data entry. This parameter must not be modified
by this method. If <code>SecondaryConfig#setExtractFromPrimaryKeyOnly</code>
is configured as <code>true</code>, the <code>data</code> param may be either null
or non-null, and the implementation is expected to ignore it; otherwise,
this parameter is always non-null.</dd>
<dd><code>indexKeyEntry</code> - the secondary key created by this method. This parameter
is always non-null.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if a key was created, or false to indicate that the key is
not present.</dd>
</dl>
</li>
</ul>
<a name="nullifyForeignKey-com.sleepycat.je.SecondaryDatabase-com.sleepycat.je.DatabaseEntry-">
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<h4>nullifyForeignKey</h4>
<pre>public&nbsp;boolean&nbsp;nullifyForeignKey(<a href="../../../../com/sleepycat/je/SecondaryDatabase.html" title="class in com.sleepycat.je">SecondaryDatabase</a>&nbsp;db,
<a href="../../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a>&nbsp;dataEntry)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../com/sleepycat/je/ForeignKeyNullifier.html#nullifyForeignKey-com.sleepycat.je.SecondaryDatabase-com.sleepycat.je.DatabaseEntry-">ForeignKeyNullifier</a></code></span></div>
<div class="block">Sets the foreign key reference to null in the datum of the primary
database.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../com/sleepycat/je/ForeignKeyNullifier.html#nullifyForeignKey-com.sleepycat.je.SecondaryDatabase-com.sleepycat.je.DatabaseEntry-">nullifyForeignKey</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../com/sleepycat/je/ForeignKeyNullifier.html" title="interface in com.sleepycat.je">ForeignKeyNullifier</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>db</code> - the database in which the foreign key integrity
constraint is defined. This parameter is passed for informational
purposes but is not commonly used.</dd>
<dd><code>dataEntry</code> - the existing primary datum in which the foreign key
reference should be set to null. This parameter should be updated by
this method if it returns true.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if the datum was modified, or false to indicate that the
key is not present.</dd>
</dl>
</li>
</ul>
<a name="createSecondaryKey-com.sleepycat.bind.tuple.TupleInput-java.lang.Object-com.sleepycat.bind.tuple.TupleOutput-">
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<h4>createSecondaryKey</h4>
<pre>public abstract&nbsp;boolean&nbsp;createSecondaryKey(<a href="../../../../com/sleepycat/bind/tuple/TupleInput.html" title="class in com.sleepycat.bind.tuple">TupleInput</a>&nbsp;primaryKeyInput,
<a href="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html" title="type parameter in TupleSerialKeyCreator">D</a>&nbsp;dataInput,
<a href="../../../../com/sleepycat/bind/tuple/TupleOutput.html" title="class in com.sleepycat.bind.tuple">TupleOutput</a>&nbsp;indexKeyOutput)</pre>
<div class="block">Creates the index key entry from primary key tuple entry and
deserialized data entry.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>primaryKeyInput</code> - is the <a href="../../../../com/sleepycat/bind/tuple/TupleInput.html" title="class in com.sleepycat.bind.tuple"><code>TupleInput</code></a> for the primary key
entry, or null if no primary key entry is used to construct the index
key.</dd>
<dd><code>dataInput</code> - is the deserialized data entry, or null if no data
entry is used to construct the index key.</dd>
<dd><code>indexKeyOutput</code> - is the destination index key tuple. For index
keys which are optionally present, no tuple entry should be output to
indicate that the key is not present or null.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if a key was created, or false to indicate that the key is
not present.</dd>
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<h4>nullifyForeignKey</h4>
<pre>public&nbsp;<a href="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html" title="type parameter in TupleSerialKeyCreator">D</a>&nbsp;nullifyForeignKey(<a href="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html" title="type parameter in TupleSerialKeyCreator">D</a>&nbsp;data)</pre>
<div class="block">Clears the index key in the deserialized data entry.
<p>On entry the data parameter contains the index key to be cleared. It
should be changed by this method such that <a href="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html#createSecondaryKey-com.sleepycat.je.SecondaryDatabase-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-"><code>createSecondaryKey(com.sleepycat.je.SecondaryDatabase, com.sleepycat.je.DatabaseEntry, com.sleepycat.je.DatabaseEntry, com.sleepycat.je.DatabaseEntry)</code></a>
will return false. Other fields in the data object should remain
unchanged.</p></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>data</code> - is the source and destination deserialized data
entry.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the destination data object, or null to indicate that the
key is not present and no change is necessary. The data returned may
be the same object passed as the data parameter or a newly created
object.</dd>
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