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<H2>

com.sleepycat.bind.tuple
 
Class DoubleBinding</H2>
<PRE>
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">java.lang.Object</A>
 <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html" title="class in com.sleepycat.bind.tuple">com.sleepycat.bind.tuple.TupleBase</A>
 <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../com/sleepycat/bind/tuple/TupleBinding.html" title="class in com.sleepycat.bind.tuple">com.sleepycat.bind.tuple.TupleBinding</A>
 <IMG SRC="../../../../resources/inherit.gif" ALT="extended by ">com.sleepycat.bind.tuple.DoubleBinding
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<DT>All Implemented Interfaces: <DD><A HREF="../../../../com/sleepycat/bind/EntryBinding.html" title="interface in com.sleepycat.bind">EntryBinding</A></DD>
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<DT><PRE>public class DoubleBinding<DT>extends <A HREF="../../../../com/sleepycat/bind/tuple/TupleBinding.html" title="class in com.sleepycat.bind.tuple">TupleBinding</A></DL>
</PRE>

A concrete <code>TupleBinding</code> for a <code>Double</code> primitive
 wrapper or a <code>double</code> primitive.

Note: This class produces byte array values that by default
 (without a custom comparator) do not sort correctly for negative
 values. Only non-negative values are sorted correctly by default. To sort
 all values correctly by default, use <A HREF="../../../../com/sleepycat/bind/tuple/SortedDoubleBinding.html" title="class in com.sleepycat.bind.tuple"><CODE>SortedDoubleBinding</CODE></A>.

There are two ways to use this class:
 <ol>
 <li>When using the <A HREF="../../../../com/sleepycat/db/package-summary.html"><CODE>com.sleepycat.db</CODE></A> package directly, the static
 methods in this class can be used to convert between primitive values and
 <A HREF="../../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db"><CODE>DatabaseEntry</CODE></A> objects.</li>
 <li>When using the <A HREF="../../../../com/sleepycat/collections/package-summary.html"><CODE>com.sleepycat.collections</CODE></A> package, an instance of
 this class can be used with any stored collection. The easiest way to
 obtain a binding instance is with the <A HREF="../../../../com/sleepycat/bind/tuple/TupleBinding.html#getPrimitiveBinding(java.lang.Class)"><CODE>TupleBinding.getPrimitiveBinding(java.lang.Class)</CODE></A> method.</li>
 </ol>

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<TD><CODE><A HREF="../../../../com/sleepycat/bind/tuple/DoubleBinding.html#DoubleBinding()">DoubleBinding</A>()</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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<CODE>static&nbsp;void</CODE></TD>
<TD><CODE><A HREF="../../../../com/sleepycat/bind/tuple/DoubleBinding.html#doubleToEntry(double, com.sleepycat.db.DatabaseEntry)">doubleToEntry</A>(double&nbsp;val,
 <A HREF="../../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A>&nbsp;entry)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Converts a simple <code>double</code> value into an entry buffer.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<CODE>static&nbsp;double</CODE></TD>
<TD><CODE><A HREF="../../../../com/sleepycat/bind/tuple/DoubleBinding.html#entryToDouble(com.sleepycat.db.DatabaseEntry)">entryToDouble</A>(<A HREF="../../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A>&nbsp;entry)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Converts an entry buffer into a simple <code>double</code> value.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>&nbsp;<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></CODE></TD>
<TD><CODE><A HREF="../../../../com/sleepycat/bind/tuple/DoubleBinding.html#entryToObject(com.sleepycat.bind.tuple.TupleInput)">entryToObject</A>(<A HREF="../../../../com/sleepycat/bind/tuple/TupleInput.html" title="class in com.sleepycat.bind.tuple">TupleInput</A>&nbsp;input)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Constructs a key or data object from a <A HREF="../../../../com/sleepycat/bind/tuple/TupleInput.html" title="class in com.sleepycat.bind.tuple"><CODE>TupleInput</CODE></A> entry.</TD>
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<CODE>protected &nbsp;<A HREF="../../../../com/sleepycat/bind/tuple/TupleOutput.html" title="class in com.sleepycat.bind.tuple">TupleOutput</A></CODE></TD>
<TD><CODE><A HREF="../../../../com/sleepycat/bind/tuple/DoubleBinding.html#getTupleOutput(java.lang.Object)">getTupleOutput</A>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;object)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns an empty TupleOutput instance that will be used by the tuple
 binding or key creator.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<CODE>&nbsp;void</CODE></TD>
<TD><CODE><A HREF="../../../../com/sleepycat/bind/tuple/DoubleBinding.html#objectToEntry(java.lang.Object, com.sleepycat.bind.tuple.TupleOutput)">objectToEntry</A>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;object,
 <A HREF="../../../../com/sleepycat/bind/tuple/TupleOutput.html" title="class in com.sleepycat.bind.tuple">TupleOutput</A>&nbsp;output)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Converts a key or data object to a tuple entry.</TD>
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&nbsp;<A NAME="methods_inherited_from_class_com.sleepycat.bind.tuple.TupleBinding"></A>
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<TH ALIGN="left">Methods inherited from class com.sleepycat.bind.tuple.<A HREF="../../../../com/sleepycat/bind/tuple/TupleBinding.html" title="class in com.sleepycat.bind.tuple">TupleBinding</A></TH>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../com/sleepycat/bind/tuple/TupleBinding.html#entryToObject(com.sleepycat.db.DatabaseEntry)">entryToObject</A>, <A HREF="../../../../com/sleepycat/bind/tuple/TupleBinding.html#getPrimitiveBinding(java.lang.Class)">getPrimitiveBinding</A>, <A HREF="../../../../com/sleepycat/bind/tuple/TupleBinding.html#objectToEntry(java.lang.Object, com.sleepycat.db.DatabaseEntry)">objectToEntry</A></CODE></TD>
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left">Methods inherited from class com.sleepycat.bind.tuple.<A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html" title="class in com.sleepycat.bind.tuple">TupleBase</A></TH>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#entryToInput(com.sleepycat.db.DatabaseEntry)">entryToInput</A>, <A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#getTupleBufferSize()">getTupleBufferSize</A>, <A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#inputToEntry(com.sleepycat.bind.tuple.TupleInput, com.sleepycat.db.DatabaseEntry)">inputToEntry</A>, <A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#newOutput()">newOutput</A>, <A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#newOutput(byte[])">newOutput</A>, <A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#outputToEntry(com.sleepycat.bind.tuple.TupleOutput, com.sleepycat.db.DatabaseEntry)">outputToEntry</A>, <A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#setTupleBufferSize(int)">setTupleBufferSize</A></CODE></TD>
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<TH ALIGN="left">Methods inherited from class java.lang.<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></TH>
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<A NAME="DoubleBinding()"></A><H3>
DoubleBinding</H3>
<PRE>
public DoubleBinding()</PRE>
<DL>
</DL>

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<A NAME="entryToObject(com.sleepycat.bind.tuple.TupleInput)"></A><H3>
entryToObject</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> entryToObject(<A HREF="../../../../com/sleepycat/bind/tuple/TupleInput.html" title="class in com.sleepycat.bind.tuple">TupleInput</A>&nbsp;input)</PRE>
<DL>
<DD>Description copied from class: <CODE><A HREF="../../../../com/sleepycat/bind/tuple/TupleBinding.html#entryToObject(com.sleepycat.bind.tuple.TupleInput)">TupleBinding</A></CODE></DD>
<DD>Constructs a key or data object from a <A HREF="../../../../com/sleepycat/bind/tuple/TupleInput.html" title="class in com.sleepycat.bind.tuple"><CODE>TupleInput</CODE></A> entry.

<DD><DL>
<DT>Specified by:<DD><CODE><A HREF="../../../../com/sleepycat/bind/tuple/TupleBinding.html#entryToObject(com.sleepycat.bind.tuple.TupleInput)">entryToObject</A></CODE> in class <CODE><A HREF="../../../../com/sleepycat/bind/tuple/TupleBinding.html" title="class in com.sleepycat.bind.tuple">TupleBinding</A></CODE></DL>
</DD>
<DD><DL>
<DT>Parameters:<DD><CODE>input</CODE> - is the tuple key or data entry.
<DT>Returns:<DD>the key or data object constructed from the entry.</DL>
</DD>
</DL>
<HR>

<A NAME="objectToEntry(java.lang.Object, com.sleepycat.bind.tuple.TupleOutput)"></A><H3>
objectToEntry</H3>
<PRE>
public void objectToEntry(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;object,
 <A HREF="../../../../com/sleepycat/bind/tuple/TupleOutput.html" title="class in com.sleepycat.bind.tuple">TupleOutput</A>&nbsp;output)</PRE>
<DL>
<DD>Description copied from class: <CODE><A HREF="../../../../com/sleepycat/bind/tuple/TupleBinding.html#objectToEntry(java.lang.Object, com.sleepycat.bind.tuple.TupleOutput)">TupleBinding</A></CODE></DD>
<DD>Converts a key or data object to a tuple entry.

<DD><DL>
<DT>Specified by:<DD><CODE><A HREF="../../../../com/sleepycat/bind/tuple/TupleBinding.html#objectToEntry(java.lang.Object, com.sleepycat.bind.tuple.TupleOutput)">objectToEntry</A></CODE> in class <CODE><A HREF="../../../../com/sleepycat/bind/tuple/TupleBinding.html" title="class in com.sleepycat.bind.tuple">TupleBinding</A></CODE></DL>
</DD>
<DD><DL>
<DT>Parameters:<DD><CODE>object</CODE> - is the key or data object.<DD><CODE>output</CODE> - is the tuple entry to which the key or data should be
 written.</DL>
</DD>
</DL>
<HR>

<A NAME="getTupleOutput(java.lang.Object)"></A><H3>
getTupleOutput</H3>
<PRE>
protected <A HREF="../../../../com/sleepycat/bind/tuple/TupleOutput.html" title="class in com.sleepycat.bind.tuple">TupleOutput</A> getTupleOutput(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;object)</PRE>
<DL>
<DD>Description copied from class: <CODE><A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#getTupleOutput(java.lang.Object)">TupleBase</A></CODE></DD>
<DD>Returns an empty TupleOutput instance that will be used by the tuple
 binding or key creator.

The default implementation of this method creates a new TupleOutput
 with an initial buffer size that can be changed using the <A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#setTupleBufferSize(int)"><CODE>TupleBase.setTupleBufferSize(int)</CODE></A> method.

This method may be overridden to return a TupleOutput instance. For
 example, an instance per thread could be created and returned by this
 method. If a TupleOutput instance is reused, be sure to call its
 <A HREF="../../../../com/sleepycat/util/FastOutputStream.html#reset()"><CODE>FastOutputStream.reset()</CODE></A> method before each
 use.

<DD><DL>
<DT>Overrides:<DD><CODE><A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#getTupleOutput(java.lang.Object)">getTupleOutput</A></CODE> in class <CODE><A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html" title="class in com.sleepycat.bind.tuple">TupleBase</A></CODE></DL>
</DD>
<DD><DL>
<DT>Parameters:<DD><CODE>object</CODE> - is the object to be written to the tuple output, and may
 be used by subclasses to determine the size of the output buffer.
<DT>Returns:<DD>an empty TupleOutput instance.<DT>See Also:<DD><A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#setTupleBufferSize(int)"><CODE>TupleBase.setTupleBufferSize(int)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="entryToDouble(com.sleepycat.db.DatabaseEntry)"></A><H3>
entryToDouble</H3>
<PRE>
public static double entryToDouble(<A HREF="../../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A>&nbsp;entry)</PRE>
<DL>
<DD>Converts an entry buffer into a simple <code>double</code> value.

<DD><DL>
<DT>Parameters:<DD><CODE>entry</CODE> - is the source entry buffer.
<DT>Returns:<DD>the resulting value.</DL>
</DD>
</DL>
<HR>

<A NAME="doubleToEntry(double, com.sleepycat.db.DatabaseEntry)"></A><H3>
doubleToEntry</H3>
<PRE>
public static void doubleToEntry(double&nbsp;val,
 <A HREF="../../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A>&nbsp;entry)</PRE>
<DL>
<DD>Converts a simple <code>double</code> value into an entry buffer.

<DD><DL>
<DT>Parameters:<DD><CODE>val</CODE> - is the source value.<DD><CODE>entry</CODE> - is the destination entry buffer.</DL>
</DD>
</DL>

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