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 16:25:47 EDT 2010 --> 6<TITLE> 7Hasher (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="Hasher (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" 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{ 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 Hasher</H2> 94<HR> 95<DL> 96<DT><PRE>public interface <B>Hasher</B></DL> 97</PRE> 98 99<P> 100An application-specified, database hash function. 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/Hasher.html#hash(com.sleepycat.db.Database, byte[], int)">hash</A></B>(<A HREF="../../../com/sleepycat/db/Database.html" title="class in com.sleepycat.db">Database</A> db, 120 byte[] data, 121 int len)</CODE> 122 123<BR> 124 An application-specified, database-specific hash function.</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="hash(com.sleepycat.db.Database, byte[], int)"><!-- --></A><H3> 141hash</H3> 142<PRE> 143int <B>hash</B>(<A HREF="../../../com/sleepycat/db/Database.html" title="class in com.sleepycat.db">Database</A> db, 144 byte[] data, 145 int len)</PRE> 146<DL> 147<DD>An application-specified, database-specific hash function. 148 <p> 149 The hash function must handle any key values used by the application 150 (possibly including zero-length keys). 151 <p> 152<P> 153<DD><DL> 154<DT><B>Parameters:</B><DD><CODE>db</CODE> - The enclosing database handle.<DD><CODE>data</CODE> - The byte string to be hashed.<DD><CODE>len</CODE> - The length of the byte string in bytes. 155 <p> @return 156 The hash value of the byte string.</DL> 157</DD> 158</DL> 159<!-- ========= END OF CLASS DATA ========= --> 160<HR> 161 162 163<!-- ======= START OF BOTTOM NAVBAR ====== --> 164<A NAME="navbar_bottom"><!-- --></A> 165<A HREF="#skip-navbar_bottom" title="Skip navigation links"></A> 166<TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> 167<TR> 168<TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> 169<A NAME="navbar_bottom_firstrow"><!-- --></A> 170<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> 171 <TR ALIGN="center" VALIGN="top"> 172 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> 173 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> 174 <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> 175 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/Hasher.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> 176 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> 177 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> 178 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> 179 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> 180 </TR> 181</TABLE> 182</TD> 183<TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM> 184<b>Berkeley DB</b><br><font size="-1"> version 4.8.30</font></EM> 185</TD> 186</TR> 187 188<TR> 189<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 190 <A HREF="../../../com/sleepycat/db/ForeignMultiKeyNullifier.html" title="interface in com.sleepycat.db"><B>PREV CLASS</B></A> 191 <A HREF="../../../com/sleepycat/db/HashStats.html" title="class in com.sleepycat.db"><B>NEXT CLASS</B></A></FONT></TD> 192<TD BGCOLOR="white" 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