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<div class="subTitle">com.sleepycat.bind.tuple</div>
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<h2 title="Interface MarshalledTupleKeyEntity" class="title">Interface MarshalledTupleKeyEntity</h2>
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<pre>public interface <span class="typeNameLabel">MarshalledTupleKeyEntity</span></pre>
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<div class="block">A marshalling interface implemented by entity classes that represent keys as
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tuples. Since <code>MarshalledTupleKeyEntity</code> objects are instantiated
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using Java deserialization, no particular constructor is required by classes
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that implement this interface.
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<p>Note that a marshalled tuple key extractor is somewhat less efficient
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than a non-marshalled key tuple extractor because more conversions are
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needed. A marshalled key extractor must convert the entry to an object in
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order to extract the key fields, while an unmarshalled key extractor does
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not.</p></div>
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<dl>
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<dt><span class="simpleTagLabel">Author:</span></dt>
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<dd>Mark Hayes</dd>
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<dt><span class="seeLabel">See Also:</span></dt>
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<dd><a href="../../../../com/sleepycat/bind/tuple/TupleTupleMarshalledBinding.html" title="class in com.sleepycat.bind.tuple"><code>TupleTupleMarshalledBinding</code></a>,
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<a href="../../../../com/sleepycat/bind/serial/TupleSerialMarshalledBinding.html" title="class in com.sleepycat.bind.serial"><code>TupleSerialMarshalledBinding</code></a></dd>
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<td class="colFirst"><code>void</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/sleepycat/bind/tuple/MarshalledTupleKeyEntity.html#marshalPrimaryKey-com.sleepycat.bind.tuple.TupleOutput-">marshalPrimaryKey</a></span>(<a href="../../../../com/sleepycat/bind/tuple/TupleOutput.html" title="class in com.sleepycat.bind.tuple">TupleOutput</a> keyOutput)</code>
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<div class="block">Extracts the entity's primary key and writes it to the key output.</div>
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</td>
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<tr id="i1" class="rowColor">
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<td class="colFirst"><code>boolean</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/sleepycat/bind/tuple/MarshalledTupleKeyEntity.html#marshalSecondaryKey-java.lang.String-com.sleepycat.bind.tuple.TupleOutput-">marshalSecondaryKey</a></span>(java.lang.String keyName,
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<a href="../../../../com/sleepycat/bind/tuple/TupleOutput.html" title="class in com.sleepycat.bind.tuple">TupleOutput</a> keyOutput)</code>
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<div class="block">Extracts the entity's secondary key and writes it to the key output.</div>
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</td>
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<tr id="i2" class="altColor">
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<td class="colFirst"><code>boolean</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/sleepycat/bind/tuple/MarshalledTupleKeyEntity.html#nullifyForeignKey-java.lang.String-">nullifyForeignKey</a></span>(java.lang.String keyName)</code>
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<div class="block">Clears the entity's secondary key fields for the given key name.</div>
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</td>
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<tr id="i3" class="rowColor">
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<td class="colFirst"><code>void</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/sleepycat/bind/tuple/MarshalledTupleKeyEntity.html#unmarshalPrimaryKey-com.sleepycat.bind.tuple.TupleInput-">unmarshalPrimaryKey</a></span>(<a href="../../../../com/sleepycat/bind/tuple/TupleInput.html" title="class in com.sleepycat.bind.tuple">TupleInput</a> keyInput)</code>
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<div class="block">Completes construction of the entity by setting its primary key from the
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stored primary key.</div>
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</td>
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</tr>
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<a name="marshalPrimaryKey-com.sleepycat.bind.tuple.TupleOutput-">
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<h4>marshalPrimaryKey</h4>
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<pre>void marshalPrimaryKey(<a href="../../../../com/sleepycat/bind/tuple/TupleOutput.html" title="class in com.sleepycat.bind.tuple">TupleOutput</a> keyOutput)</pre>
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<div class="block">Extracts the entity's primary key and writes it to the key output.</div>
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<dl>
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<dt><span class="paramLabel">Parameters:</span></dt>
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<dd><code>keyOutput</code> - is the output tuple.</dd>
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<h4>unmarshalPrimaryKey</h4>
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<pre>void unmarshalPrimaryKey(<a href="../../../../com/sleepycat/bind/tuple/TupleInput.html" title="class in com.sleepycat.bind.tuple">TupleInput</a> keyInput)</pre>
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<div class="block">Completes construction of the entity by setting its primary key from the
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stored primary key.</div>
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<dl>
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<dt><span class="paramLabel">Parameters:</span></dt>
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<dd><code>keyInput</code> - is the input tuple.</dd>
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<h4>marshalSecondaryKey</h4>
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<pre>boolean marshalSecondaryKey(java.lang.String keyName,
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<a href="../../../../com/sleepycat/bind/tuple/TupleOutput.html" title="class in com.sleepycat.bind.tuple">TupleOutput</a> keyOutput)</pre>
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<div class="block">Extracts the entity's secondary key and writes it to the key output.</div>
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<dl>
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<dt><span class="paramLabel">Parameters:</span></dt>
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<dd><code>keyName</code> - identifies the secondary key.</dd>
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<dd><code>keyOutput</code> - is the output tuple.</dd>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>true if a key was created, or false to indicate that the key is
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not present.</dd>
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<pre>boolean nullifyForeignKey(java.lang.String keyName)</pre>
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<div class="block">Clears the entity's secondary key fields for the given key name.
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<p>The specified index key should be changed by this method such that
|
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<a href="../../../../com/sleepycat/bind/tuple/MarshalledTupleKeyEntity.html#marshalSecondaryKey-java.lang.String-com.sleepycat.bind.tuple.TupleOutput-"><code>marshalSecondaryKey(java.lang.String, com.sleepycat.bind.tuple.TupleOutput)</code></a> for the same key name will return false.
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Other fields in the data object should remain unchanged.</p>
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<p>If <a href="../../../../com/sleepycat/je/ForeignKeyDeleteAction.html#NULLIFY"><code>ForeignKeyDeleteAction.NULLIFY</code></a> was
|
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specified when opening the secondary database, this method is called
|
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when the entity for this foreign key is deleted. If NULLIFY was not
|
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specified, this method will not be called and may always return
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false.</p></div>
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<dl>
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<dt><span class="paramLabel">Parameters:</span></dt>
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<dd><code>keyName</code> - identifies the secondary key.</dd>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>true if the key was cleared, or false to indicate that the key
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is not present and no change is necessary.</dd>
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