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 1.5.0) on Thu May 15 17:17:31 EDT 2008 --> 6<TITLE> 7Hasher (Oracle - Berkeley DB Java API) 8</TITLE> 9 10<META NAME="keywords" CONTENT="com.sleepycat.db.Hasher interface"> 11 12<LINK REL ="stylesheet" TYPE="text/css" HREF="../../../style.css" TITLE="Style"> 13 14<SCRIPT type="text/javascript"> 15function windowTitle() 16{ 17 parent.document.title="Hasher (Oracle - Berkeley DB Java API)"; 18} 19</SCRIPT> 20<NOSCRIPT> 21</NOSCRIPT> 22 23</HEAD> 24 25<BODY BGCOLOR="white" onload="windowTitle();"> 26 27 28<!-- ========= START OF TOP NAVBAR ======= --> 29<A NAME="navbar_top"><!-- --></A> 30<A HREF="#skip-navbar_top" title="Skip navigation links"></A> 31<TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> 32<TR> 33<TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> 34<A NAME="navbar_top_firstrow"><!-- 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HREF="../../../allclasses-noframe.html"><B>All Classes</B></A>'); 64 } 65 //--> 66</SCRIPT> 67<NOSCRIPT> 68 <A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A> 69</NOSCRIPT> 70 71 72</FONT></TD> 73</TR> 74<TR> 75<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 76 SUMMARY: NESTED | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD> 77<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 78DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD> 79</TR> 80</TABLE> 81<A NAME="skip-navbar_top"></A> 82<!-- ========= END OF TOP NAVBAR ========= --> 83 84<HR> 85<!-- ======== START OF CLASS DATA ======== --> 86<H2> 87<FONT SIZE="-1"> 88com.sleepycat.db</FONT> 89<BR> 90Interface Hasher</H2> 91<HR> 92<DL> 93<DT><PRE>public interface <B>Hasher</B></DL> 94</PRE> 95 96<P> 97An application-specified, database hash function. 98<P> 99 100<P> 101<HR> 102 103<P> 104 105<!-- ========== METHOD SUMMARY =========== --> 106 107<A NAME="method_summary"><!-- --></A> 108<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 109<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 110<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> 111<B>Method Summary</B></FONT></TH> 112</TR> 113<TR BGCOLOR="white" CLASS="TableRowColor"> 114<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 115<CODE> int</CODE></FONT></TD> 116<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, 117 byte[] data, 118 int len)</CODE> 119 120<BR> 121 An application-specified, database-specific hash function.</TD> 122</TR> 123</TABLE> 124 125<P> 126 127<!-- ============ METHOD DETAIL ========== --> 128 129<A NAME="method_detail"><!-- --></A> 130<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 131<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 132<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> 133<B>Method Detail</B></FONT></TH> 134</TR> 135</TABLE> 136 137<A NAME="hash(com.sleepycat.db.Database, byte[], int)"><!-- --></A><H3> 138hash</H3> 139<PRE> 140int <B>hash</B>(<A HREF="../../../com/sleepycat/db/Database.html" title="class in com.sleepycat.db">Database</A> db, 141 byte[] data, 142 int len)</PRE> 143<DL> 144<DD>An application-specified, database-specific hash function. 145 <p> 146 The hash function must handle any key values used by the application 147 (possibly including zero-length keys). 148 <p> 149<P> 150<DD><DL> 151<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. 152 <p> @return 153 The hash value of the byte string.</DL> 154</DD> 155</DL> 156<!-- ========= END OF CLASS DATA ========= --> 157<HR> 158 159 160<!-- ======= START OF BOTTOM NAVBAR ====== --> 161<A NAME="navbar_bottom"><!-- --></A> 162<A 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</TD> 174 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> 175 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> 176 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> 177 </TR> 178</TABLE> 179</TD> 180<TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM> 181<b>Berkeley DB</b><br><font size="-1"> version 4.7.25</font></EM> 182</TD> 183</TR> 184 185<TR> 186<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 187 <A HREF="../../../com/sleepycat/db/ForeignMultiKeyNullifier.html" title="interface in com.sleepycat.db"><B>PREV CLASS</B></A> 188 <A HREF="../../../com/sleepycat/db/HashStats.html" title="class in com.sleepycat.db"><B>NEXT CLASS</B></A></FONT></TD> 189<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 190 <A 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