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| 7 | DataChecksum (Hadoop 0.20.1 API) |
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| 89 | <H2> |
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| 90 | <FONT SIZE="-1"> |
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| 91 | org.apache.hadoop.util</FONT> |
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| 92 | <BR> |
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| 93 | Class DataChecksum</H2> |
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| 94 | <PRE> |
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| 95 | <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A> |
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| 96 | <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.hadoop.util.DataChecksum</B> |
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| 97 | </PRE> |
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| 98 | <DL> |
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| 99 | <DT><B>All Implemented Interfaces:</B> <DD><A HREF="http://java.sun.com/javase/6/docs/api/java/util/zip/Checksum.html?is-external=true" title="class or interface in java.util.zip">Checksum</A></DD> |
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| 100 | </DL> |
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| 101 | <HR> |
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| 102 | <DL> |
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| 103 | <DT><PRE>public class <B>DataChecksum</B><DT>extends <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A><DT>implements <A HREF="http://java.sun.com/javase/6/docs/api/java/util/zip/Checksum.html?is-external=true" title="class or interface in java.util.zip">Checksum</A></DL> |
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| 104 | </PRE> |
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| 105 | |
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| 106 | <P> |
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| 107 | This class provides inteface and utilities for processing checksums for |
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| 108 | DFS data transfers. |
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| 109 | <P> |
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| 110 | |
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| 111 | <P> |
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| 112 | <HR> |
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| 123 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 124 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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| 125 | <CODE>static int</CODE></FONT></TD> |
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| 126 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/DataChecksum.html#CHECKSUM_CRC32">CHECKSUM_CRC32</A></B></CODE> |
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| 127 | |
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| 128 | <BR> |
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| 129 | </TD> |
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| 130 | </TR> |
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| 131 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 132 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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| 133 | <CODE>static int</CODE></FONT></TD> |
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| 134 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/DataChecksum.html#CHECKSUM_NULL">CHECKSUM_NULL</A></B></CODE> |
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| 135 | |
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| 136 | <BR> |
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| 137 | </TD> |
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| 138 | </TR> |
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| 139 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 140 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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| 141 | <CODE>static int</CODE></FONT></TD> |
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| 142 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/DataChecksum.html#HEADER_LEN">HEADER_LEN</A></B></CODE> |
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| 143 | |
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| 144 | <BR> |
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| 145 | </TD> |
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| 146 | </TR> |
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| 147 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 148 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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| 149 | <CODE>static int</CODE></FONT></TD> |
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| 150 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/DataChecksum.html#SIZE_OF_INTEGER">SIZE_OF_INTEGER</A></B></CODE> |
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| 151 | |
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| 152 | <BR> |
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| 153 | </TD> |
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| 154 | </TR> |
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| 155 | </TABLE> |
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| 156 | |
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| 157 | <!-- ========== METHOD SUMMARY =========== --> |
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| 162 | <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> |
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| 163 | <B>Method Summary</B></FONT></TH> |
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| 164 | </TR> |
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| 165 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 166 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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| 167 | <CODE> boolean</CODE></FONT></TD> |
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| 168 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/DataChecksum.html#compare(byte[], int)">compare</A></B>(byte[] buf, |
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| 169 | int offset)</CODE> |
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| 170 | |
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| 171 | <BR> |
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| 172 | Compares the checksum located at buf[offset] with the current checksum.</TD> |
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| 173 | </TR> |
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| 174 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 175 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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| 176 | <CODE> int</CODE></FONT></TD> |
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| 177 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/DataChecksum.html#getBytesPerChecksum()">getBytesPerChecksum</A></B>()</CODE> |
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| 178 | |
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| 179 | <BR> |
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| 180 | </TD> |
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| 181 | </TR> |
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| 182 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 183 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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| 184 | <CODE>static int</CODE></FONT></TD> |
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| 185 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/DataChecksum.html#getChecksumHeaderSize()">getChecksumHeaderSize</A></B>()</CODE> |
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| 186 | |
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| 187 | <BR> |
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| 188 | </TD> |
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| 189 | </TR> |
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| 190 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 191 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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| 192 | <CODE> int</CODE></FONT></TD> |
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| 193 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/DataChecksum.html#getChecksumSize()">getChecksumSize</A></B>()</CODE> |
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| 194 | |
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| 195 | <BR> |
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| 196 | </TD> |
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| 197 | </TR> |
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| 198 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 199 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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| 200 | <CODE> int</CODE></FONT></TD> |
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| 201 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/DataChecksum.html#getChecksumType()">getChecksumType</A></B>()</CODE> |
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| 202 | |
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| 203 | <BR> |
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| 204 | </TD> |
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| 205 | </TR> |
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| 206 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 207 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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| 208 | <CODE> byte[]</CODE></FONT></TD> |
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| 209 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/DataChecksum.html#getHeader()">getHeader</A></B>()</CODE> |
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| 210 | |
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| 211 | <BR> |
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| 212 | </TD> |
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| 213 | </TR> |
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| 214 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 215 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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| 216 | <CODE> int</CODE></FONT></TD> |
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| 217 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/DataChecksum.html#getNumBytesInSum()">getNumBytesInSum</A></B>()</CODE> |
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| 218 | |
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| 219 | <BR> |
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| 220 | </TD> |
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| 221 | </TR> |
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| 222 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 223 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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| 224 | <CODE> long</CODE></FONT></TD> |
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| 225 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/DataChecksum.html#getValue()">getValue</A></B>()</CODE> |
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| 226 | |
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| 227 | <BR> |
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| 228 | </TD> |
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| 229 | </TR> |
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| 230 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 231 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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| 232 | <CODE>static <A HREF="../../../../org/apache/hadoop/util/DataChecksum.html" title="class in org.apache.hadoop.util">DataChecksum</A></CODE></FONT></TD> |
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| 233 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/DataChecksum.html#newDataChecksum(byte[], int)">newDataChecksum</A></B>(byte[] bytes, |
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| 234 | int offset)</CODE> |
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| 235 | |
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| 236 | <BR> |
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| 237 | Creates a DataChecksum from HEADER_LEN bytes from arr[offset].</TD> |
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| 238 | </TR> |
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| 239 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 240 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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| 241 | <CODE>static <A HREF="../../../../org/apache/hadoop/util/DataChecksum.html" title="class in org.apache.hadoop.util">DataChecksum</A></CODE></FONT></TD> |
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| 242 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/DataChecksum.html#newDataChecksum(java.io.DataInputStream)">newDataChecksum</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInputStream.html?is-external=true" title="class or interface in java.io">DataInputStream</A> in)</CODE> |
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| 243 | |
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| 244 | <BR> |
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| 245 | This constructucts a DataChecksum by reading HEADER_LEN bytes from |
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| 246 | input stream <i>in</i></TD> |
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| 247 | </TR> |
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| 248 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 249 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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| 250 | <CODE>static <A HREF="../../../../org/apache/hadoop/util/DataChecksum.html" title="class in org.apache.hadoop.util">DataChecksum</A></CODE></FONT></TD> |
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| 251 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/DataChecksum.html#newDataChecksum(int, int)">newDataChecksum</A></B>(int type, |
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| 252 | int bytesPerChecksum)</CODE> |
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| 253 | |
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| 254 | <BR> |
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| 255 | </TD> |
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| 256 | </TR> |
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| 257 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 258 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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| 259 | <CODE> void</CODE></FONT></TD> |
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| 260 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/DataChecksum.html#reset()">reset</A></B>()</CODE> |
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| 261 | |
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| 262 | <BR> |
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| 263 | </TD> |
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| 264 | </TR> |
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| 265 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 266 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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| 267 | <CODE> void</CODE></FONT></TD> |
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| 268 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/DataChecksum.html#update(byte[], int, int)">update</A></B>(byte[] b, |
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| 269 | int off, |
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| 270 | int len)</CODE> |
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| 271 | |
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| 272 | <BR> |
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| 273 | </TD> |
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| 274 | </TR> |
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| 275 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 276 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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| 277 | <CODE> void</CODE></FONT></TD> |
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| 278 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/DataChecksum.html#update(int)">update</A></B>(int b)</CODE> |
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| 279 | |
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| 280 | <BR> |
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| 281 | </TD> |
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| 282 | </TR> |
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| 283 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 284 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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| 285 | <CODE> void</CODE></FONT></TD> |
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| 286 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/DataChecksum.html#writeHeader(java.io.DataOutputStream)">writeHeader</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataOutputStream.html?is-external=true" title="class or interface in java.io">DataOutputStream</A> out)</CODE> |
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| 287 | |
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| 288 | <BR> |
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| 289 | Writes the checksum header to the output stream <i>out</i>.</TD> |
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| 290 | </TR> |
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| 291 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 292 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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| 293 | <CODE> int</CODE></FONT></TD> |
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| 294 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/DataChecksum.html#writeValue(byte[], int, boolean)">writeValue</A></B>(byte[] buf, |
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| 295 | int offset, |
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| 296 | boolean reset)</CODE> |
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| 297 | |
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| 298 | <BR> |
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| 299 | Writes the current checksum to a buffer.</TD> |
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| 300 | </TR> |
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| 301 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 302 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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| 303 | <CODE> int</CODE></FONT></TD> |
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| 304 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/DataChecksum.html#writeValue(java.io.DataOutputStream, boolean)">writeValue</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataOutputStream.html?is-external=true" title="class or interface in java.io">DataOutputStream</A> out, |
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| 305 | boolean reset)</CODE> |
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| 306 | |
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| 307 | <BR> |
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| 308 | Writes the current checksum to the stream.</TD> |
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| 309 | </TR> |
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| 310 | </TABLE> |
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| 311 | <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A> |
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| 312 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
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| 313 | <TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"> |
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| 314 | <TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></B></TH> |
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| 315 | </TR> |
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| 316 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 317 | <TD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD> |
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| 318 | </TR> |
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| 319 | </TABLE> |
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| 320 | |
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| 321 | <P> |
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| 322 | |
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| 323 | <!-- ============ FIELD DETAIL =========== --> |
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| 324 | |
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| 325 | <A NAME="field_detail"><!-- --></A> |
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| 326 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
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| 327 | <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
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| 328 | <TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> |
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| 329 | <B>Field Detail</B></FONT></TH> |
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| 330 | </TR> |
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| 331 | </TABLE> |
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| 332 | |
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| 333 | <A NAME="HEADER_LEN"><!-- --></A><H3> |
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| 334 | HEADER_LEN</H3> |
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| 335 | <PRE> |
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| 336 | public static final int <B>HEADER_LEN</B></PRE> |
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| 337 | <DL> |
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| 338 | <DL> |
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| 339 | <DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.hadoop.util.DataChecksum.HEADER_LEN">Constant Field Values</A></DL> |
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| 340 | </DL> |
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| 341 | <HR> |
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| 342 | |
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| 343 | <A NAME="CHECKSUM_NULL"><!-- --></A><H3> |
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| 344 | CHECKSUM_NULL</H3> |
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| 345 | <PRE> |
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| 346 | public static final int <B>CHECKSUM_NULL</B></PRE> |
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| 347 | <DL> |
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| 348 | <DL> |
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| 349 | <DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.hadoop.util.DataChecksum.CHECKSUM_NULL">Constant Field Values</A></DL> |
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| 350 | </DL> |
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| 351 | <HR> |
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| 352 | |
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| 353 | <A NAME="CHECKSUM_CRC32"><!-- --></A><H3> |
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| 354 | CHECKSUM_CRC32</H3> |
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| 355 | <PRE> |
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| 356 | public static final int <B>CHECKSUM_CRC32</B></PRE> |
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| 357 | <DL> |
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| 358 | <DL> |
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| 359 | <DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.hadoop.util.DataChecksum.CHECKSUM_CRC32">Constant Field Values</A></DL> |
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| 360 | </DL> |
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| 361 | <HR> |
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| 362 | |
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| 363 | <A NAME="SIZE_OF_INTEGER"><!-- --></A><H3> |
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| 364 | SIZE_OF_INTEGER</H3> |
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| 365 | <PRE> |
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| 366 | public static final int <B>SIZE_OF_INTEGER</B></PRE> |
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| 367 | <DL> |
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| 368 | <DL> |
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| 369 | <DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.hadoop.util.DataChecksum.SIZE_OF_INTEGER">Constant Field Values</A></DL> |
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| 370 | </DL> |
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| 371 | |
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| 372 | <!-- ============ METHOD DETAIL ========== --> |
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| 373 | |
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| 374 | <A NAME="method_detail"><!-- --></A> |
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| 375 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
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| 376 | <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
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| 377 | <TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> |
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| 378 | <B>Method Detail</B></FONT></TH> |
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| 379 | </TR> |
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| 380 | </TABLE> |
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| 381 | |
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| 382 | <A NAME="newDataChecksum(int, int)"><!-- --></A><H3> |
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| 383 | newDataChecksum</H3> |
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| 384 | <PRE> |
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| 385 | public static <A HREF="../../../../org/apache/hadoop/util/DataChecksum.html" title="class in org.apache.hadoop.util">DataChecksum</A> <B>newDataChecksum</B>(int type, |
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| 386 | int bytesPerChecksum)</PRE> |
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| 387 | <DL> |
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| 388 | <DD><DL> |
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| 389 | </DL> |
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| 390 | </DD> |
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| 391 | <DD><DL> |
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| 392 | </DL> |
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| 393 | </DD> |
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| 394 | </DL> |
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| 395 | <HR> |
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| 396 | |
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| 397 | <A NAME="newDataChecksum(byte[], int)"><!-- --></A><H3> |
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| 398 | newDataChecksum</H3> |
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| 399 | <PRE> |
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| 400 | public static <A HREF="../../../../org/apache/hadoop/util/DataChecksum.html" title="class in org.apache.hadoop.util">DataChecksum</A> <B>newDataChecksum</B>(byte[] bytes, |
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| 401 | int offset)</PRE> |
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| 402 | <DL> |
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| 403 | <DD>Creates a DataChecksum from HEADER_LEN bytes from arr[offset]. |
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| 404 | <P> |
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| 405 | <DD><DL> |
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| 406 | </DL> |
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| 407 | </DD> |
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| 408 | <DD><DL> |
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| 409 | |
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| 410 | <DT><B>Returns:</B><DD>DataChecksum of the type in the array or null in case of an error.</DL> |
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| 411 | </DD> |
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| 412 | </DL> |
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| 413 | <HR> |
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| 414 | |
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| 415 | <A NAME="newDataChecksum(java.io.DataInputStream)"><!-- --></A><H3> |
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| 416 | newDataChecksum</H3> |
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| 417 | <PRE> |
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| 418 | public static <A HREF="../../../../org/apache/hadoop/util/DataChecksum.html" title="class in org.apache.hadoop.util">DataChecksum</A> <B>newDataChecksum</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInputStream.html?is-external=true" title="class or interface in java.io">DataInputStream</A> in) |
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| 419 | throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE> |
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| 420 | <DL> |
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| 421 | <DD>This constructucts a DataChecksum by reading HEADER_LEN bytes from |
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| 422 | input stream <i>in</i> |
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| 423 | <P> |
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| 424 | <DD><DL> |
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| 425 | </DL> |
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| 426 | </DD> |
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| 427 | <DD><DL> |
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| 428 | |
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| 429 | <DT><B>Throws:</B> |
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| 430 | <DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL> |
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| 431 | </DD> |
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| 432 | </DL> |
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| 433 | <HR> |
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| 434 | |
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| 435 | <A NAME="writeHeader(java.io.DataOutputStream)"><!-- --></A><H3> |
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| 436 | writeHeader</H3> |
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| 437 | <PRE> |
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| 438 | public void <B>writeHeader</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataOutputStream.html?is-external=true" title="class or interface in java.io">DataOutputStream</A> out) |
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| 439 | throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE> |
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| 440 | <DL> |
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| 441 | <DD>Writes the checksum header to the output stream <i>out</i>. |
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| 442 | <P> |
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| 443 | <DD><DL> |
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| 444 | </DL> |
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| 445 | </DD> |
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| 446 | <DD><DL> |
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| 447 | |
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| 448 | <DT><B>Throws:</B> |
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| 449 | <DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL> |
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| 450 | </DD> |
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| 451 | </DL> |
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| 452 | <HR> |
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| 453 | |
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| 454 | <A NAME="getHeader()"><!-- --></A><H3> |
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| 455 | getHeader</H3> |
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| 456 | <PRE> |
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| 457 | public byte[] <B>getHeader</B>()</PRE> |
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| 458 | <DL> |
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| 459 | <DD><DL> |
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| 460 | </DL> |
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| 461 | </DD> |
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| 462 | <DD><DL> |
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| 463 | </DL> |
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| 464 | </DD> |
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| 465 | </DL> |
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| 466 | <HR> |
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| 467 | |
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| 468 | <A NAME="writeValue(java.io.DataOutputStream, boolean)"><!-- --></A><H3> |
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| 469 | writeValue</H3> |
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| 470 | <PRE> |
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| 471 | public int <B>writeValue</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataOutputStream.html?is-external=true" title="class or interface in java.io">DataOutputStream</A> out, |
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| 472 | boolean reset) |
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| 473 | throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE> |
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| 474 | <DL> |
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| 475 | <DD>Writes the current checksum to the stream. |
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| 476 | If <i>reset</i> is true, then resets the checksum. |
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| 477 | <P> |
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| 478 | <DD><DL> |
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| 479 | </DL> |
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| 480 | </DD> |
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| 481 | <DD><DL> |
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| 482 | |
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| 483 | <DT><B>Returns:</B><DD>number of bytes written. Will be equal to getChecksumSize(); |
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| 484 | <DT><B>Throws:</B> |
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| 485 | <DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL> |
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| 486 | </DD> |
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| 487 | </DL> |
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| 488 | <HR> |
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| 489 | |
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| 490 | <A NAME="writeValue(byte[], int, boolean)"><!-- --></A><H3> |
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| 491 | writeValue</H3> |
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| 492 | <PRE> |
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| 493 | public int <B>writeValue</B>(byte[] buf, |
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| 494 | int offset, |
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| 495 | boolean reset) |
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| 496 | throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE> |
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| 497 | <DL> |
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| 498 | <DD>Writes the current checksum to a buffer. |
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| 499 | If <i>reset</i> is true, then resets the checksum. |
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| 500 | <P> |
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| 501 | <DD><DL> |
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| 502 | </DL> |
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| 503 | </DD> |
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| 504 | <DD><DL> |
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| 505 | |
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| 506 | <DT><B>Returns:</B><DD>number of bytes written. Will be equal to getChecksumSize(); |
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| 507 | <DT><B>Throws:</B> |
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| 508 | <DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL> |
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| 509 | </DD> |
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| 510 | </DL> |
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| 511 | <HR> |
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| 512 | |
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| 513 | <A NAME="compare(byte[], int)"><!-- --></A><H3> |
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| 514 | compare</H3> |
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| 515 | <PRE> |
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| 516 | public boolean <B>compare</B>(byte[] buf, |
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| 517 | int offset)</PRE> |
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| 518 | <DL> |
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| 519 | <DD>Compares the checksum located at buf[offset] with the current checksum. |
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| 520 | <P> |
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| 521 | <DD><DL> |
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| 522 | </DL> |
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| 523 | </DD> |
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| 524 | <DD><DL> |
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| 525 | |
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| 526 | <DT><B>Returns:</B><DD>true if the checksum matches and false otherwise.</DL> |
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| 527 | </DD> |
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| 528 | </DL> |
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| 529 | <HR> |
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| 530 | |
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| 531 | <A NAME="getChecksumType()"><!-- --></A><H3> |
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| 532 | getChecksumType</H3> |
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| 533 | <PRE> |
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| 534 | public int <B>getChecksumType</B>()</PRE> |
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| 535 | <DL> |
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| 536 | <DD><DL> |
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| 537 | </DL> |
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| 538 | </DD> |
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| 539 | <DD><DL> |
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| 540 | </DL> |
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| 541 | </DD> |
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| 542 | </DL> |
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| 543 | <HR> |
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| 544 | |
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| 545 | <A NAME="getChecksumSize()"><!-- --></A><H3> |
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| 546 | getChecksumSize</H3> |
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| 547 | <PRE> |
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| 548 | public int <B>getChecksumSize</B>()</PRE> |
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| 549 | <DL> |
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| 550 | <DD><DL> |
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| 551 | </DL> |
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| 552 | </DD> |
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| 553 | <DD><DL> |
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| 554 | </DL> |
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| 555 | </DD> |
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| 556 | </DL> |
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| 557 | <HR> |
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| 558 | |
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| 559 | <A NAME="getBytesPerChecksum()"><!-- --></A><H3> |
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| 560 | getBytesPerChecksum</H3> |
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| 561 | <PRE> |
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| 562 | public int <B>getBytesPerChecksum</B>()</PRE> |
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| 563 | <DL> |
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| 564 | <DD><DL> |
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| 565 | </DL> |
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| 566 | </DD> |
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| 567 | <DD><DL> |
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| 568 | </DL> |
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| 569 | </DD> |
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| 570 | </DL> |
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| 571 | <HR> |
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| 572 | |
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| 573 | <A NAME="getNumBytesInSum()"><!-- --></A><H3> |
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| 574 | getNumBytesInSum</H3> |
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| 575 | <PRE> |
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| 576 | public int <B>getNumBytesInSum</B>()</PRE> |
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| 577 | <DL> |
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| 578 | <DD><DL> |
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| 579 | </DL> |
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| 580 | </DD> |
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| 581 | <DD><DL> |
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| 582 | </DL> |
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| 583 | </DD> |
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| 584 | </DL> |
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| 585 | <HR> |
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| 586 | |
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| 587 | <A NAME="getChecksumHeaderSize()"><!-- --></A><H3> |
---|
| 588 | getChecksumHeaderSize</H3> |
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| 589 | <PRE> |
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| 590 | public static int <B>getChecksumHeaderSize</B>()</PRE> |
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| 591 | <DL> |
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| 592 | <DD><DL> |
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| 593 | </DL> |
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| 594 | </DD> |
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| 595 | <DD><DL> |
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| 596 | </DL> |
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| 597 | </DD> |
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| 598 | </DL> |
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| 599 | <HR> |
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| 600 | |
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| 601 | <A NAME="getValue()"><!-- --></A><H3> |
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| 602 | getValue</H3> |
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| 603 | <PRE> |
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| 604 | public long <B>getValue</B>()</PRE> |
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| 605 | <DL> |
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| 606 | <DD><DL> |
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| 607 | <DT><B>Specified by:</B><DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/util/zip/Checksum.html?is-external=true#getValue()" title="class or interface in java.util.zip">getValue</A></CODE> in interface <CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/util/zip/Checksum.html?is-external=true" title="class or interface in java.util.zip">Checksum</A></CODE></DL> |
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| 608 | </DD> |
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| 609 | <DD><DL> |
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| 610 | </DL> |
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| 611 | </DD> |
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| 612 | </DL> |
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| 613 | <HR> |
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| 614 | |
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| 615 | <A NAME="reset()"><!-- --></A><H3> |
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| 616 | reset</H3> |
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| 617 | <PRE> |
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| 618 | public void <B>reset</B>()</PRE> |
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| 619 | <DL> |
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| 620 | <DD><DL> |
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| 621 | <DT><B>Specified by:</B><DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/util/zip/Checksum.html?is-external=true#reset()" title="class or interface in java.util.zip">reset</A></CODE> in interface <CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/util/zip/Checksum.html?is-external=true" title="class or interface in java.util.zip">Checksum</A></CODE></DL> |
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| 622 | </DD> |
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| 623 | <DD><DL> |
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| 624 | </DL> |
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| 625 | </DD> |
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| 626 | </DL> |
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| 627 | <HR> |
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| 628 | |
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| 629 | <A NAME="update(byte[], int, int)"><!-- --></A><H3> |
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| 630 | update</H3> |
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| 631 | <PRE> |
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| 632 | public void <B>update</B>(byte[] b, |
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| 633 | int off, |
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| 634 | int len)</PRE> |
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| 635 | <DL> |
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| 636 | <DD><DL> |
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| 637 | <DT><B>Specified by:</B><DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/util/zip/Checksum.html?is-external=true#update(byte[], int, int)" title="class or interface in java.util.zip">update</A></CODE> in interface <CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/util/zip/Checksum.html?is-external=true" title="class or interface in java.util.zip">Checksum</A></CODE></DL> |
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| 638 | </DD> |
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| 639 | <DD><DL> |
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| 640 | </DL> |
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| 641 | </DD> |
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| 642 | </DL> |
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| 643 | <HR> |
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| 644 | |
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| 645 | <A NAME="update(int)"><!-- --></A><H3> |
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| 646 | update</H3> |
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| 647 | <PRE> |
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| 648 | public void <B>update</B>(int b)</PRE> |
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| 649 | <DL> |
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| 650 | <DD><DL> |
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| 651 | <DT><B>Specified by:</B><DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/util/zip/Checksum.html?is-external=true#update(int)" title="class or interface in java.util.zip">update</A></CODE> in interface <CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/util/zip/Checksum.html?is-external=true" title="class or interface in java.util.zip">Checksum</A></CODE></DL> |
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| 652 | </DD> |
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| 653 | <DD><DL> |
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| 654 | </DL> |
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| 655 | </DD> |
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| 656 | </DL> |
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