1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2<!--NewPage--> 3<HTML> 4<HEAD> 5<!-- Generated by javadoc (build 1.6.0_03) on Mon Apr 12 16:25:45 EDT 2010 --> 6<TITLE> 7BtreePrefixCalculator (Oracle - Berkeley DB Java API) 8</TITLE> 9 10<META NAME="date" CONTENT="2010-04-12"> 11 12<LINK REL ="stylesheet" TYPE="text/css" HREF="../../../style.css" TITLE="Style"> 13 14<SCRIPT type="text/javascript"> 15function windowTitle() 16{ 17 if (location.href.indexOf('is-external=true') == -1) { 18 parent.document.title="BtreePrefixCalculator (Oracle - Berkeley DB Java API)"; 19 } 20} 21</SCRIPT> 22<NOSCRIPT> 23</NOSCRIPT> 24 25</HEAD> 26 27<BODY BGCOLOR="white" onload="windowTitle();"> 28<HR> 29 30 31<!-- ========= START OF TOP NAVBAR ======= --> 32<A NAME="navbar_top"><!-- --></A> 33<A HREF="#skip-navbar_top" title="Skip navigation links"></A> 34<TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> 35<TR> 36<TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> 37<A NAME="navbar_top_firstrow"><!-- --></A> 38<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> 39 <TR ALIGN="center" VALIGN="top"> 40 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> 41 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> 42 <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> 43 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/BtreePrefixCalculator.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> 44 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> 45 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> 46 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> 47 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> 48 </TR> 49</TABLE> 50</TD> 51<TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM> 52<b>Berkeley DB</b><br><font size="-1"> version 4.8.30</font></EM> 53</TD> 54</TR> 55 56<TR> 57<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 58 <A HREF="../../../com/sleepycat/db/BtreeCompressor.html" title="interface in com.sleepycat.db"><B>PREV CLASS</B></A> 59 <A HREF="../../../com/sleepycat/db/BtreeStats.html" title="class in com.sleepycat.db"><B>NEXT CLASS</B></A></FONT></TD> 60<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 61 <A HREF="../../../index.html?com/sleepycat/db/BtreePrefixCalculator.html" target="_top"><B>FRAMES</B></A> 62 <A HREF="BtreePrefixCalculator.html" target="_top"><B>NO FRAMES</B></A> 63 <SCRIPT type="text/javascript"> 64 <!-- 65 if(window==top) { 66 document.writeln('<A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A>'); 67 } 68 //--> 69</SCRIPT> 70<NOSCRIPT> 71 <A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A> 72</NOSCRIPT> 73 74 75</FONT></TD> 76</TR> 77<TR> 78<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 79 SUMMARY: NESTED | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD> 80<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 81DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD> 82</TR> 83</TABLE> 84<A NAME="skip-navbar_top"></A> 85<!-- ========= END OF TOP NAVBAR ========= --> 86 87<HR> 88<!-- ======== START OF CLASS DATA ======== --> 89<H2> 90<FONT SIZE="-1"> 91com.sleepycat.db</FONT> 92<BR> 93Interface BtreePrefixCalculator</H2> 94<HR> 95<DL> 96<DT><PRE>public interface <B>BtreePrefixCalculator</B></DL> 97</PRE> 98 99<P> 100An interface specifying how Btree prefixes should be calculated. 101<P> 102 103<P> 104<HR> 105 106<P> 107 108<!-- ========== METHOD SUMMARY =========== --> 109 110<A NAME="method_summary"><!-- --></A> 111<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 112<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 113<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> 114<B>Method Summary</B></FONT></TH> 115</TR> 116<TR BGCOLOR="white" CLASS="TableRowColor"> 117<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 118<CODE> int</CODE></FONT></TD> 119<TD><CODE><B><A HREF="../../../com/sleepycat/db/BtreePrefixCalculator.html#prefix(com.sleepycat.db.Database, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry)">prefix</A></B>(<A HREF="../../../com/sleepycat/db/Database.html" title="class in com.sleepycat.db">Database</A> db, 120 <A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> dbt1, 121 <A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> dbt2)</CODE> 122 123<BR> 124 The application-specific Btree prefix callback.</TD> 125</TR> 126</TABLE> 127 128<P> 129 130<!-- ============ METHOD DETAIL ========== --> 131 132<A NAME="method_detail"><!-- --></A> 133<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 134<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 135<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> 136<B>Method Detail</B></FONT></TH> 137</TR> 138</TABLE> 139 140<A NAME="prefix(com.sleepycat.db.Database, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry)"><!-- --></A><H3> 141prefix</H3> 142<PRE> 143int <B>prefix</B>(<A HREF="../../../com/sleepycat/db/Database.html" title="class in com.sleepycat.db">Database</A> db, 144 <A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> dbt1, 145 <A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> dbt2)</PRE> 146<DL> 147<DD>The application-specific Btree prefix callback. 148 <p> 149<P> 150<DD><DL> 151<DT><B>Parameters:</B><DD><CODE>db</CODE> - The enclosing database handle.<DD><CODE>dbt1</CODE> - A database entry representing a database key.<DD><CODE>dbt2</CODE> - A database entry representing a database key.</DL> 152</DD> 153</DL> 154<!-- ========= END OF CLASS DATA ========= --> 155<HR> 156 157 158<!-- ======= START OF BOTTOM NAVBAR ====== --> 159<A NAME="navbar_bottom"><!-- --></A> 160<A HREF="#skip-navbar_bottom" title="Skip navigation links"></A> 161<TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> 162<TR> 163<TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> 164<A NAME="navbar_bottom_firstrow"><!-- --></A> 165<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> 166 <TR ALIGN="center" VALIGN="top"> 167 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> 168 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> 169 <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> 170 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/BtreePrefixCalculator.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> 171 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> 172 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> 173 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> 174 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> 175 </TR> 176</TABLE> 177</TD> 178<TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM> 179<b>Berkeley DB</b><br><font size="-1"> version 4.8.30</font></EM> 180</TD> 181</TR> 182 183<TR> 184<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 185 <A HREF="../../../com/sleepycat/db/BtreeCompressor.html" title="interface in com.sleepycat.db"><B>PREV CLASS</B></A> 186 <A HREF="../../../com/sleepycat/db/BtreeStats.html" title="class in com.sleepycat.db"><B>NEXT CLASS</B></A></FONT></TD> 187<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 188 <A HREF="../../../index.html?com/sleepycat/db/BtreePrefixCalculator.html" target="_top"><B>FRAMES</B></A> 189 <A HREF="BtreePrefixCalculator.html" target="_top"><B>NO FRAMES</B></A> 190 <SCRIPT type="text/javascript"> 191 <!-- 192 if(window==top) { 193 document.writeln('<A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A>'); 194 } 195 //--> 196</SCRIPT> 197<NOSCRIPT> 198 <A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A> 199</NOSCRIPT> 200 201 202</FONT></TD> 203</TR> 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