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<li>Summary: </li>
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<div class="subTitle">com.sleepycat.persist.impl</div>
<h2 title="Class EnhancedAccessor" class="title">Class EnhancedAccessor</h2>
</div>
<div class="contentContainer">
<ul class="inheritance">
<li>java.lang.Object</li>
<li>
<ul class="inheritance">
<li>com.sleepycat.persist.impl.EnhancedAccessor</li>
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<pre>public class <span class="strong">EnhancedAccessor</span>
extends java.lang.Object</pre>
<div class="block">Implements Accessor for a complex persistent class.</div>
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<h3>Field Summary</h3>
<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation">
<caption><span>Fields</span><span class="tabEnd"> </span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../com/sleepycat/persist/impl/EnhancedAccessor.html#EXPECT_ENHANCED">EXPECT_ENHANCED</a></strong></code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><strong><a href="../../../../com/sleepycat/persist/impl/EnhancedAccessor.html#MAX_FIELD_NUM">MAX_FIELD_NUM</a></strong></code>
<div class="block">A large field value to use instead of Integer.MAX_VALUE, to work around
Java JIT compiler bug when doing an (X <= Integer.MAX_VALUE) as would be
done in readXxxKeyFields methods.</div>
</td>
</tr>
</table>
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<h3>Method Summary</h3>
<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
<caption><span>Methods</span><span class="tabEnd"> </span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>java.lang.Object</code></td>
<td class="colLast"><code><strong><a href="../../../../com/sleepycat/persist/impl/EnhancedAccessor.html#getField(java.lang.Object, int, int, boolean)">getField</a></strong>(java.lang.Object o,
int field,
int superLevel,
boolean isSecField)</code>
<div class="block">Returns the value of a given field, representing primitives as primitive
wrapper objects.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../com/sleepycat/persist/impl/EnhancedAccessor.html#isPriKeyFieldNullOrZero(java.lang.Object)">isPriKeyFieldNullOrZero</a></strong>(java.lang.Object o)</code>
<div class="block">Returns whether the primary key field is null (for a reference type) or
zero (for a primitive integer type).</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>java.lang.Object</code></td>
<td class="colLast"><code><strong><a href="../../../../com/sleepycat/persist/impl/EnhancedAccessor.html#newArray(int)">newArray</a></strong>(int len)</code>
<div class="block">Creates a new one dimensional array of the given length, having the
target class as its component type.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>java.lang.Object</code></td>
<td class="colLast"><code><strong><a href="../../../../com/sleepycat/persist/impl/EnhancedAccessor.html#newInstance()">newInstance</a></strong>()</code>
<div class="block">Creates a new instance of the target class using its default
constructor.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../com/sleepycat/persist/impl/EnhancedAccessor.html#readCompositeKeyFields(java.lang.Object, com.sleepycat.persist.impl.EntityInput)">readCompositeKeyFields</a></strong>(java.lang.Object o,
<a href="../../../../com/sleepycat/persist/impl/EntityInput.html" title="interface in com.sleepycat.persist.impl">EntityInput</a> input)</code>
<div class="block">Reads all composite key field values from the given EntityInput,
reading in declared field number order.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../com/sleepycat/persist/impl/EnhancedAccessor.html#readNonKeyFields(java.lang.Object, com.sleepycat.persist.impl.EntityInput, int, int, int)">readNonKeyFields</a></strong>(java.lang.Object o,
<a href="../../../../com/sleepycat/persist/impl/EntityInput.html" title="interface in com.sleepycat.persist.impl">EntityInput</a> input,
int startField,
int endField,
int superLevel)</code>
<div class="block">Reads a range of non-key field values from the given EntityInput,
reading fields in super classes first and in name order within class.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../com/sleepycat/persist/impl/EnhancedAccessor.html#readPriKeyField(java.lang.Object, com.sleepycat.persist.impl.EntityInput)">readPriKeyField</a></strong>(java.lang.Object o,
<a href="../../../../com/sleepycat/persist/impl/EntityInput.html" title="interface in com.sleepycat.persist.impl">EntityInput</a> input)</code>
<div class="block">Reads the primary key field value from the given EntityInput.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../com/sleepycat/persist/impl/EnhancedAccessor.html#readSecKeyFields(java.lang.Object, com.sleepycat.persist.impl.EntityInput, int, int, int)">readSecKeyFields</a></strong>(java.lang.Object o,
<a href="../../../../com/sleepycat/persist/impl/EntityInput.html" title="interface in com.sleepycat.persist.impl">EntityInput</a> input,
int startField,
int endField,
int superLevel)</code>
<div class="block">Reads a range of secondary key field values from the given EntityInput,
reading fields in super classes first and in name order within class.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><strong><a href="../../../../com/sleepycat/persist/impl/EnhancedAccessor.html#registerClass(java.lang.String, com.sleepycat.persist.impl.Enhanced)">registerClass</a></strong>(java.lang.String className,
<a href="../../../../com/sleepycat/persist/impl/Enhanced.html" title="interface in com.sleepycat.persist.impl">Enhanced</a> prototype)</code>
<div class="block">Registers a prototype instance, and should be called during
initialization of the prototype class.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../com/sleepycat/persist/impl/EnhancedAccessor.html#setField(java.lang.Object, int, int, boolean, java.lang.Object)">setField</a></strong>(java.lang.Object o,
int field,
int superLevel,
boolean isSecField,
java.lang.Object value)</code>
<div class="block">Changes the value of a given field, representing primitives as primitive
wrapper objects.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../com/sleepycat/persist/impl/EnhancedAccessor.html#writeCompositeKeyFields(java.lang.Object, com.sleepycat.persist.impl.EntityOutput)">writeCompositeKeyFields</a></strong>(java.lang.Object o,
<a href="../../../../com/sleepycat/persist/impl/EntityOutput.html" title="interface in com.sleepycat.persist.impl">EntityOutput</a> output)</code>
<div class="block">Writes all composite key field values to the given EntityOutput, writing
in declared field number order.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../com/sleepycat/persist/impl/EnhancedAccessor.html#writeNonKeyFields(java.lang.Object, com.sleepycat.persist.impl.EntityOutput)">writeNonKeyFields</a></strong>(java.lang.Object o,
<a href="../../../../com/sleepycat/persist/impl/EntityOutput.html" title="interface in com.sleepycat.persist.impl">EntityOutput</a> output)</code>
<div class="block">Writes all non-key field values to the given EntityOutput, writing
fields in super classes first and in name order within class.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../com/sleepycat/persist/impl/EnhancedAccessor.html#writePriKeyField(java.lang.Object, com.sleepycat.persist.impl.EntityOutput)">writePriKeyField</a></strong>(java.lang.Object o,
<a href="../../../../com/sleepycat/persist/impl/EntityOutput.html" title="interface in com.sleepycat.persist.impl">EntityOutput</a> output)</code>
<div class="block">Writes the primary key field value to the given EntityOutput.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../com/sleepycat/persist/impl/EnhancedAccessor.html#writeSecKeyFields(java.lang.Object, com.sleepycat.persist.impl.EntityOutput)">writeSecKeyFields</a></strong>(java.lang.Object o,
<a href="../../../../com/sleepycat/persist/impl/EntityOutput.html" title="interface in com.sleepycat.persist.impl">EntityOutput</a> output)</code>
<div class="block">Writes all secondary key field values to the given EntityOutput,
writing fields in super classes first and in name order within class.</div>
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<h3>Methods inherited from class java.lang.Object</h3>
<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
</ul>
</li>
</ul>
</li>
</ul>
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<div class="details">
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<h3>Field Detail</h3>
<a name="EXPECT_ENHANCED">
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<h4>EXPECT_ENHANCED</h4>
<pre>public static final boolean EXPECT_ENHANCED</pre>
</li>
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<h4>MAX_FIELD_NUM</h4>
<pre>public static final int MAX_FIELD_NUM</pre>
<div class="block">A large field value to use instead of Integer.MAX_VALUE, to work around
Java JIT compiler bug when doing an (X <= Integer.MAX_VALUE) as would be
done in readXxxKeyFields methods.</div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../constant-values.html#com.sleepycat.persist.impl.EnhancedAccessor.MAX_FIELD_NUM">Constant Field Values</a></dd></dl>
</li>
</ul>
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<h3>Method Detail</h3>
<a name="registerClass(java.lang.String, com.sleepycat.persist.impl.Enhanced)">
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<h4>registerClass</h4>
<pre>public static void registerClass(java.lang.String className,
<a href="../../../../com/sleepycat/persist/impl/Enhanced.html" title="interface in com.sleepycat.persist.impl">Enhanced</a> prototype)</pre>
<div class="block">Registers a prototype instance, and should be called during
initialization of the prototype class. The prototype may be null for
an abstract class.</div>
</li>
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<a name="newInstance()">
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<h4>newInstance</h4>
<pre>public java.lang.Object newInstance()</pre>
<div class="block">Creates a new instance of the target class using its default
constructor.</div>
</li>
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<a name="newArray(int)">
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</a>
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<h4>newArray</h4>
<pre>public java.lang.Object newArray(int len)</pre>
<div class="block">Creates a new one dimensional array of the given length, having the
target class as its component type.
<p>Using a special method for a one dimensional array, which can be
implemented by bytecode generation, is a compromise. We use reflection
to create multidimensional arrays. We could in the future generate code
to create arrays as they are encountered, if there is a need to avoid
reflection for multidimensional arrays.</p></div>
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<a name="isPriKeyFieldNullOrZero(java.lang.Object)">
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<h4>isPriKeyFieldNullOrZero</h4>
<pre>public boolean isPriKeyFieldNullOrZero(java.lang.Object o)</pre>
<div class="block">Returns whether the primary key field is null (for a reference type) or
zero (for a primitive integer type). Null and zero are used as an
indication that the key should be assigned from a sequence.</div>
</li>
</ul>
<a name="writePriKeyField(java.lang.Object, com.sleepycat.persist.impl.EntityOutput)">
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<h4>writePriKeyField</h4>
<pre>public void writePriKeyField(java.lang.Object o,
<a href="../../../../com/sleepycat/persist/impl/EntityOutput.html" title="interface in com.sleepycat.persist.impl">EntityOutput</a> output)</pre>
<div class="block">Writes the primary key field value to the given EntityOutput.
<p>To write a primary key with a reference type, this method must call
EntityOutput.writeKeyObject.</p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>o</code> - is the object whose primary key field is to be written.</dd><dd><code>output</code> - the output data to write to.</dd></dl>
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<a name="readPriKeyField(java.lang.Object, com.sleepycat.persist.impl.EntityInput)">
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<h4>readPriKeyField</h4>
<pre>public void readPriKeyField(java.lang.Object o,
<a href="../../../../com/sleepycat/persist/impl/EntityInput.html" title="interface in com.sleepycat.persist.impl">EntityInput</a> input)</pre>
<div class="block">Reads the primary key field value from the given EntityInput.
<p>To read a primary key with a reference type, this method must call
EntityInput.readKeyObject.</p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>o</code> - is the object whose primary key field is to be read.</dd><dd><code>input</code> - the input data to read from.</dd></dl>
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<a name="writeSecKeyFields(java.lang.Object, com.sleepycat.persist.impl.EntityOutput)">
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<h4>writeSecKeyFields</h4>
<pre>public void writeSecKeyFields(java.lang.Object o,
<a href="../../../../com/sleepycat/persist/impl/EntityOutput.html" title="interface in com.sleepycat.persist.impl">EntityOutput</a> output)</pre>
<div class="block">Writes all secondary key field values to the given EntityOutput,
writing fields in super classes first and in name order within class.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>o</code> - is the object whose secondary key fields are to be written.
<p>If the primary key has a reference type, this method must call
EntityOutput.registerPriKeyObject before writing any other fields.</p></dd><dd><code>output</code> - the output data to write to.</dd></dl>
</li>
</ul>
<a name="readSecKeyFields(java.lang.Object, com.sleepycat.persist.impl.EntityInput, int, int, int)">
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<h4>readSecKeyFields</h4>
<pre>public void readSecKeyFields(java.lang.Object o,
<a href="../../../../com/sleepycat/persist/impl/EntityInput.html" title="interface in com.sleepycat.persist.impl">EntityInput</a> input,
int startField,
int endField,
int superLevel)</pre>
<div class="block">Reads a range of secondary key field values from the given EntityInput,
reading fields in super classes first and in name order within class.
<p>If the primary key has a reference type, this method must call
EntityInput.registerPriKeyObject before reading any other fields.</p>
<p>To read all fields, pass -1 for superLevel, zero for startField and
MAX_FIELD_NUM for endField. Fields from super classes are read
first.</p>
<p>To read a specific range of fields, pass a non-negative number for
superLevel and the specific indices of the field range to be read in the
class at that level.</p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>o</code> - is the object whose secondary key fields are to be read.</dd><dd><code>input</code> - the input data to read from.</dd><dd><code>startField</code> - the starting field index in the range of fields to
read. To read all fields, the startField should be zero.</dd><dd><code>endField</code> - the ending field index in the range of fields to read.
To read all fields, the endField should be MAX_FIELD_NUM.</dd><dd><code>superLevel</code> - is a non-negative number to read the fields of the
class that is the Nth super instance; or a negative number to read
fields in all classes.</dd></dl>
</li>
</ul>
<a name="writeNonKeyFields(java.lang.Object, com.sleepycat.persist.impl.EntityOutput)">
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<ul class="blockList">
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<h4>writeNonKeyFields</h4>
<pre>public void writeNonKeyFields(java.lang.Object o,
<a href="../../../../com/sleepycat/persist/impl/EntityOutput.html" title="interface in com.sleepycat.persist.impl">EntityOutput</a> output)</pre>
<div class="block">Writes all non-key field values to the given EntityOutput, writing
fields in super classes first and in name order within class.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>o</code> - is the object whose non-key fields are to be written.</dd><dd><code>output</code> - the output data to write to.</dd></dl>
</li>
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<a name="readNonKeyFields(java.lang.Object, com.sleepycat.persist.impl.EntityInput, int, int, int)">
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<h4>readNonKeyFields</h4>
<pre>public void readNonKeyFields(java.lang.Object o,
<a href="../../../../com/sleepycat/persist/impl/EntityInput.html" title="interface in com.sleepycat.persist.impl">EntityInput</a> input,
int startField,
int endField,
int superLevel)</pre>
<div class="block">Reads a range of non-key field values from the given EntityInput,
reading fields in super classes first and in name order within class.
<p>To read all fields, pass -1 for superLevel, zero for startField and
MAX_FIELD_NUM for endField. Fields from super classes are read
first.</p>
<p>To read a specific range of fields, pass a non-negative number for
superLevel and the specific indices of the field range to be read in the
class at that level.</p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>o</code> - is the object whose non-key fields are to be read.</dd><dd><code>input</code> - the input data to read from.</dd><dd><code>startField</code> - the starting field index in the range of fields to
read. To read all fields, the startField should be zero.</dd><dd><code>endField</code> - the ending field index in the range of fields to read.
To read all fields, the endField should be MAX_FIELD_NUM.</dd><dd><code>superLevel</code> - is a non-negative number to read the fields of the
class that is the Nth super instance; or a negative number to read
fields in all classes.</dd></dl>
</li>
</ul>
<a name="writeCompositeKeyFields(java.lang.Object, com.sleepycat.persist.impl.EntityOutput)">
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<h4>writeCompositeKeyFields</h4>
<pre>public void writeCompositeKeyFields(java.lang.Object o,
<a href="../../../../com/sleepycat/persist/impl/EntityOutput.html" title="interface in com.sleepycat.persist.impl">EntityOutput</a> output)</pre>
<div class="block">Writes all composite key field values to the given EntityOutput, writing
in declared field number order.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>o</code> - the composite key object whose fields are to be written.</dd><dd><code>output</code> - the output data to write to.</dd></dl>
</li>
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<a name="readCompositeKeyFields(java.lang.Object, com.sleepycat.persist.impl.EntityInput)">
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<h4>readCompositeKeyFields</h4>
<pre>public void readCompositeKeyFields(java.lang.Object o,
<a href="../../../../com/sleepycat/persist/impl/EntityInput.html" title="interface in com.sleepycat.persist.impl">EntityInput</a> input)</pre>
<div class="block">Reads all composite key field values from the given EntityInput,
reading in declared field number order.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>o</code> - the composite key object whose fields are to be read.</dd><dd><code>input</code> - the input data to read from.</dd></dl>
</li>
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<a name="getField(java.lang.Object, int, int, boolean)">
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<h4>getField</h4>
<pre>public java.lang.Object getField(java.lang.Object o,
int field,
int superLevel,
boolean isSecField)</pre>
<div class="block">Returns the value of a given field, representing primitives as primitive
wrapper objects.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>o</code> - is the object containing the key field.</dd><dd><code>field</code> - is the field index.</dd><dd><code>superLevel</code> - is a positive number to identify the field of the
class that is the Nth super instance; or zero to identify the field in
this class.</dd><dd><code>isSecField</code> - is true for a secondary key field or false for a
non-key field.</dd>
<dt><span class="strong">Returns:</span></dt><dd>the current field value, or null for a reference type field
that is null.</dd></dl>
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<h4>setField</h4>
<pre>public void setField(java.lang.Object o,
int field,
int superLevel,
boolean isSecField,
java.lang.Object value)</pre>
<div class="block">Changes the value of a given field, representing primitives as primitive
wrapper objects.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>o</code> - is the object containing the key field.</dd><dd><code>field</code> - is the field index.</dd><dd><code>superLevel</code> - is a positive number to identify the field of the
class that is the Nth super instance; or zero to identify the field in
this class.</dd><dd><code>isSecField</code> - is true for a secondary key field or false for a
non-key field.</dd><dd><code>value</code> - is the new value of the field, or null to set a reference
type field to null.</dd></dl>
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