[120] | 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_07) on Tue Sep 01 20:56:59 UTC 2009 --> |
---|
| 6 | <TITLE> |
---|
| 7 | org.apache.hadoop.io (Hadoop 0.20.1 API) |
---|
| 8 | </TITLE> |
---|
| 9 | |
---|
| 10 | <META NAME="date" CONTENT="2009-09-01"> |
---|
| 11 | |
---|
| 12 | <LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"> |
---|
| 13 | |
---|
| 14 | <SCRIPT type="text/javascript"> |
---|
| 15 | function windowTitle() |
---|
| 16 | { |
---|
| 17 | if (location.href.indexOf('is-external=true') == -1) { |
---|
| 18 | parent.document.title="org.apache.hadoop.io (Hadoop 0.20.1 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="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Package</B></FONT> </TD> |
---|
| 42 | <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <FONT CLASS="NavBarFont1">Class</FONT> </TD> |
---|
| 43 | <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-use.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 | </EM> |
---|
| 53 | </TD> |
---|
| 54 | </TR> |
---|
| 55 | |
---|
| 56 | <TR> |
---|
| 57 | <TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> |
---|
| 58 | <A HREF="../../../../org/apache/hadoop/http/package-summary.html"><B>PREV PACKAGE</B></A> |
---|
| 59 | <A HREF="../../../../org/apache/hadoop/io/compress/package-summary.html"><B>NEXT PACKAGE</B></A></FONT></TD> |
---|
| 60 | <TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> |
---|
| 61 | <A HREF="../../../../index.html?org/apache/hadoop/io/package-summary.html" target="_top"><B>FRAMES</B></A> |
---|
| 62 | <A HREF="package-summary.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 | </TABLE> |
---|
| 78 | <A NAME="skip-navbar_top"></A> |
---|
| 79 | <!-- ========= END OF TOP NAVBAR ========= --> |
---|
| 80 | |
---|
| 81 | <HR> |
---|
| 82 | <H2> |
---|
| 83 | Package org.apache.hadoop.io |
---|
| 84 | </H2> |
---|
| 85 | Generic i/o code for use when reading and writing data to the network, |
---|
| 86 | to databases, and to files. |
---|
| 87 | <P> |
---|
| 88 | <B>See:</B> |
---|
| 89 | <BR> |
---|
| 90 | <A HREF="#package_description"><B>Description</B></A> |
---|
| 91 | <P> |
---|
| 92 | |
---|
| 93 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
---|
| 94 | <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
---|
| 95 | <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> |
---|
| 96 | <B>Interface Summary</B></FONT></TH> |
---|
| 97 | </TR> |
---|
| 98 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 99 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/Closeable.html" title="interface in org.apache.hadoop.io">Closeable</A></B></TD> |
---|
| 100 | <TD><B>Deprecated.</B> <I>use java.io.Closeable</I></TD> |
---|
| 101 | </TR> |
---|
| 102 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 103 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/RawComparator.html" title="interface in org.apache.hadoop.io">RawComparator<T></A></B></TD> |
---|
| 104 | <TD> |
---|
| 105 | A <A HREF="http://java.sun.com/javase/6/docs/api/java/util/Comparator.html?is-external=true" title="class or interface in java.util"><CODE>Comparator</CODE></A> that operates directly on byte representations of |
---|
| 106 | objects.</TD> |
---|
| 107 | </TR> |
---|
| 108 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 109 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.RawKeyValueIterator.html" title="interface in org.apache.hadoop.io">SequenceFile.Sorter.RawKeyValueIterator</A></B></TD> |
---|
| 110 | <TD>The interface to iterate over raw keys/values of SequenceFiles.</TD> |
---|
| 111 | </TR> |
---|
| 112 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 113 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.ValueBytes.html" title="interface in org.apache.hadoop.io">SequenceFile.ValueBytes</A></B></TD> |
---|
| 114 | <TD>The interface to 'raw' values of SequenceFiles.</TD> |
---|
| 115 | </TR> |
---|
| 116 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 117 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/Stringifier.html" title="interface in org.apache.hadoop.io">Stringifier<T></A></B></TD> |
---|
| 118 | <TD>Stringifier interface offers two methods to convert an object |
---|
| 119 | to a string representation and restore the object given its |
---|
| 120 | string representation.</TD> |
---|
| 121 | </TR> |
---|
| 122 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 123 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</A></B></TD> |
---|
| 124 | <TD>A serializable object which implements a simple, efficient, serialization |
---|
| 125 | protocol, based on <A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInput.html?is-external=true" title="class or interface in java.io"><CODE>DataInput</CODE></A> and <A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataOutput.html?is-external=true" title="class or interface in java.io"><CODE>DataOutput</CODE></A>.</TD> |
---|
| 126 | </TR> |
---|
| 127 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 128 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable<T></A></B></TD> |
---|
| 129 | <TD>A <A HREF="../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io"><CODE>Writable</CODE></A> which is also <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Comparable.html?is-external=true" title="class or interface in java.lang"><CODE>Comparable</CODE></A>.</TD> |
---|
| 130 | </TR> |
---|
| 131 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 132 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/WritableFactory.html" title="interface in org.apache.hadoop.io">WritableFactory</A></B></TD> |
---|
| 133 | <TD>A factory for a class of Writable.</TD> |
---|
| 134 | </TR> |
---|
| 135 | </TABLE> |
---|
| 136 | |
---|
| 137 | |
---|
| 138 | <P> |
---|
| 139 | |
---|
| 140 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
---|
| 141 | <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
---|
| 142 | <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> |
---|
| 143 | <B>Class Summary</B></FONT></TH> |
---|
| 144 | </TR> |
---|
| 145 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 146 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/AbstractMapWritable.html" title="class in org.apache.hadoop.io">AbstractMapWritable</A></B></TD> |
---|
| 147 | <TD>Abstract base class for MapWritable and SortedMapWritable |
---|
| 148 | |
---|
| 149 | Unlike org.apache.nutch.crawl.MapWritable, this class allows creation of |
---|
| 150 | MapWritable<Writable, MapWritable> so the CLASS_TO_ID and ID_TO_CLASS |
---|
| 151 | maps travel with the class instead of being static.</TD> |
---|
| 152 | </TR> |
---|
| 153 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 154 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/ArrayFile.html" title="class in org.apache.hadoop.io">ArrayFile</A></B></TD> |
---|
| 155 | <TD>A dense file-based mapping from integers to values.</TD> |
---|
| 156 | </TR> |
---|
| 157 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 158 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/ArrayFile.Reader.html" title="class in org.apache.hadoop.io">ArrayFile.Reader</A></B></TD> |
---|
| 159 | <TD>Provide access to an existing array file.</TD> |
---|
| 160 | </TR> |
---|
| 161 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 162 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/ArrayFile.Writer.html" title="class in org.apache.hadoop.io">ArrayFile.Writer</A></B></TD> |
---|
| 163 | <TD>Write a new array file.</TD> |
---|
| 164 | </TR> |
---|
| 165 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 166 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/ArrayWritable.html" title="class in org.apache.hadoop.io">ArrayWritable</A></B></TD> |
---|
| 167 | <TD>A Writable for arrays containing instances of a class.</TD> |
---|
| 168 | </TR> |
---|
| 169 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 170 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/BinaryComparable.html" title="class in org.apache.hadoop.io">BinaryComparable</A></B></TD> |
---|
| 171 | <TD>Interface supported by <A HREF="../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io"><CODE>WritableComparable</CODE></A> |
---|
| 172 | types supporting ordering/permutation by a representative set of bytes.</TD> |
---|
| 173 | </TR> |
---|
| 174 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 175 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/BloomMapFile.html" title="class in org.apache.hadoop.io">BloomMapFile</A></B></TD> |
---|
| 176 | <TD>This class extends <A HREF="../../../../org/apache/hadoop/io/MapFile.html" title="class in org.apache.hadoop.io"><CODE>MapFile</CODE></A> and provides very much the same |
---|
| 177 | functionality.</TD> |
---|
| 178 | </TR> |
---|
| 179 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 180 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/BloomMapFile.Reader.html" title="class in org.apache.hadoop.io">BloomMapFile.Reader</A></B></TD> |
---|
| 181 | <TD> </TD> |
---|
| 182 | </TR> |
---|
| 183 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 184 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/BloomMapFile.Writer.html" title="class in org.apache.hadoop.io">BloomMapFile.Writer</A></B></TD> |
---|
| 185 | <TD> </TD> |
---|
| 186 | </TR> |
---|
| 187 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 188 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/BooleanWritable.html" title="class in org.apache.hadoop.io">BooleanWritable</A></B></TD> |
---|
| 189 | <TD>A WritableComparable for booleans.</TD> |
---|
| 190 | </TR> |
---|
| 191 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 192 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/BooleanWritable.Comparator.html" title="class in org.apache.hadoop.io">BooleanWritable.Comparator</A></B></TD> |
---|
| 193 | <TD>A Comparator optimized for BooleanWritable.</TD> |
---|
| 194 | </TR> |
---|
| 195 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 196 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/BytesWritable.html" title="class in org.apache.hadoop.io">BytesWritable</A></B></TD> |
---|
| 197 | <TD>A byte sequence that is usable as a key or value.</TD> |
---|
| 198 | </TR> |
---|
| 199 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 200 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/BytesWritable.Comparator.html" title="class in org.apache.hadoop.io">BytesWritable.Comparator</A></B></TD> |
---|
| 201 | <TD>A Comparator optimized for BytesWritable.</TD> |
---|
| 202 | </TR> |
---|
| 203 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 204 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/ByteWritable.html" title="class in org.apache.hadoop.io">ByteWritable</A></B></TD> |
---|
| 205 | <TD>A WritableComparable for a single byte.</TD> |
---|
| 206 | </TR> |
---|
| 207 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 208 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/ByteWritable.Comparator.html" title="class in org.apache.hadoop.io">ByteWritable.Comparator</A></B></TD> |
---|
| 209 | <TD>A Comparator optimized for ByteWritable.</TD> |
---|
| 210 | </TR> |
---|
| 211 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 212 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/CompressedWritable.html" title="class in org.apache.hadoop.io">CompressedWritable</A></B></TD> |
---|
| 213 | <TD>A base-class for Writables which store themselves compressed and lazily |
---|
| 214 | inflate on field access.</TD> |
---|
| 215 | </TR> |
---|
| 216 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 217 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/DataInputBuffer.html" title="class in org.apache.hadoop.io">DataInputBuffer</A></B></TD> |
---|
| 218 | <TD>A reusable <A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInput.html?is-external=true" title="class or interface in java.io"><CODE>DataInput</CODE></A> implementation that reads from an in-memory |
---|
| 219 | buffer.</TD> |
---|
| 220 | </TR> |
---|
| 221 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 222 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/DataOutputBuffer.html" title="class in org.apache.hadoop.io">DataOutputBuffer</A></B></TD> |
---|
| 223 | <TD>A reusable <A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataOutput.html?is-external=true" title="class or interface in java.io"><CODE>DataOutput</CODE></A> implementation that writes to an in-memory |
---|
| 224 | buffer.</TD> |
---|
| 225 | </TR> |
---|
| 226 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 227 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/DefaultStringifier.html" title="class in org.apache.hadoop.io">DefaultStringifier<T></A></B></TD> |
---|
| 228 | <TD>DefaultStringifier is the default implementation of the <A HREF="../../../../org/apache/hadoop/io/Stringifier.html" title="interface in org.apache.hadoop.io"><CODE>Stringifier</CODE></A> |
---|
| 229 | interface which stringifies the objects using base64 encoding of the |
---|
| 230 | serialized version of the objects.</TD> |
---|
| 231 | </TR> |
---|
| 232 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 233 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/DoubleWritable.html" title="class in org.apache.hadoop.io">DoubleWritable</A></B></TD> |
---|
| 234 | <TD>Writable for Double values.</TD> |
---|
| 235 | </TR> |
---|
| 236 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 237 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/DoubleWritable.Comparator.html" title="class in org.apache.hadoop.io">DoubleWritable.Comparator</A></B></TD> |
---|
| 238 | <TD>A Comparator optimized for DoubleWritable.</TD> |
---|
| 239 | </TR> |
---|
| 240 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 241 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/FloatWritable.html" title="class in org.apache.hadoop.io">FloatWritable</A></B></TD> |
---|
| 242 | <TD>A WritableComparable for floats.</TD> |
---|
| 243 | </TR> |
---|
| 244 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 245 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/FloatWritable.Comparator.html" title="class in org.apache.hadoop.io">FloatWritable.Comparator</A></B></TD> |
---|
| 246 | <TD>A Comparator optimized for FloatWritable.</TD> |
---|
| 247 | </TR> |
---|
| 248 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 249 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/GenericWritable.html" title="class in org.apache.hadoop.io">GenericWritable</A></B></TD> |
---|
| 250 | <TD>A wrapper for Writable instances.</TD> |
---|
| 251 | </TR> |
---|
| 252 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 253 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/InputBuffer.html" title="class in org.apache.hadoop.io">InputBuffer</A></B></TD> |
---|
| 254 | <TD>A reusable <A HREF="http://java.sun.com/javase/6/docs/api/java/io/InputStream.html?is-external=true" title="class or interface in java.io"><CODE>InputStream</CODE></A> implementation that reads from an in-memory |
---|
| 255 | buffer.</TD> |
---|
| 256 | </TR> |
---|
| 257 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 258 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/IntWritable.html" title="class in org.apache.hadoop.io">IntWritable</A></B></TD> |
---|
| 259 | <TD>A WritableComparable for ints.</TD> |
---|
| 260 | </TR> |
---|
| 261 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 262 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/IntWritable.Comparator.html" title="class in org.apache.hadoop.io">IntWritable.Comparator</A></B></TD> |
---|
| 263 | <TD>A Comparator optimized for IntWritable.</TD> |
---|
| 264 | </TR> |
---|
| 265 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 266 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/IOUtils.html" title="class in org.apache.hadoop.io">IOUtils</A></B></TD> |
---|
| 267 | <TD>An utility class for I/O related functionality.</TD> |
---|
| 268 | </TR> |
---|
| 269 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 270 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/IOUtils.NullOutputStream.html" title="class in org.apache.hadoop.io">IOUtils.NullOutputStream</A></B></TD> |
---|
| 271 | <TD>/dev/null of OutputStreams.</TD> |
---|
| 272 | </TR> |
---|
| 273 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 274 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/LongWritable.html" title="class in org.apache.hadoop.io">LongWritable</A></B></TD> |
---|
| 275 | <TD>A WritableComparable for longs.</TD> |
---|
| 276 | </TR> |
---|
| 277 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 278 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/LongWritable.Comparator.html" title="class in org.apache.hadoop.io">LongWritable.Comparator</A></B></TD> |
---|
| 279 | <TD>A Comparator optimized for LongWritable.</TD> |
---|
| 280 | </TR> |
---|
| 281 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 282 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/LongWritable.DecreasingComparator.html" title="class in org.apache.hadoop.io">LongWritable.DecreasingComparator</A></B></TD> |
---|
| 283 | <TD>A decreasing Comparator optimized for LongWritable.</TD> |
---|
| 284 | </TR> |
---|
| 285 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 286 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/MapFile.html" title="class in org.apache.hadoop.io">MapFile</A></B></TD> |
---|
| 287 | <TD>A file-based map from keys to values.</TD> |
---|
| 288 | </TR> |
---|
| 289 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 290 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/MapFile.Reader.html" title="class in org.apache.hadoop.io">MapFile.Reader</A></B></TD> |
---|
| 291 | <TD>Provide access to an existing map.</TD> |
---|
| 292 | </TR> |
---|
| 293 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 294 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/MapFile.Writer.html" title="class in org.apache.hadoop.io">MapFile.Writer</A></B></TD> |
---|
| 295 | <TD>Writes a new map.</TD> |
---|
| 296 | </TR> |
---|
| 297 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 298 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/MapWritable.html" title="class in org.apache.hadoop.io">MapWritable</A></B></TD> |
---|
| 299 | <TD>A Writable Map.</TD> |
---|
| 300 | </TR> |
---|
| 301 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 302 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/MD5Hash.html" title="class in org.apache.hadoop.io">MD5Hash</A></B></TD> |
---|
| 303 | <TD>A Writable for MD5 hash values.</TD> |
---|
| 304 | </TR> |
---|
| 305 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 306 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/MD5Hash.Comparator.html" title="class in org.apache.hadoop.io">MD5Hash.Comparator</A></B></TD> |
---|
| 307 | <TD>A WritableComparator optimized for MD5Hash keys.</TD> |
---|
| 308 | </TR> |
---|
| 309 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 310 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/NullWritable.html" title="class in org.apache.hadoop.io">NullWritable</A></B></TD> |
---|
| 311 | <TD>Singleton Writable with no data.</TD> |
---|
| 312 | </TR> |
---|
| 313 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 314 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/NullWritable.Comparator.html" title="class in org.apache.hadoop.io">NullWritable.Comparator</A></B></TD> |
---|
| 315 | <TD>A Comparator "optimized" for NullWritable.</TD> |
---|
| 316 | </TR> |
---|
| 317 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 318 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/ObjectWritable.html" title="class in org.apache.hadoop.io">ObjectWritable</A></B></TD> |
---|
| 319 | <TD>A polymorphic Writable that writes an instance with it's class name.</TD> |
---|
| 320 | </TR> |
---|
| 321 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 322 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/OutputBuffer.html" title="class in org.apache.hadoop.io">OutputBuffer</A></B></TD> |
---|
| 323 | <TD>A reusable <A HREF="http://java.sun.com/javase/6/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io"><CODE>OutputStream</CODE></A> implementation that writes to an in-memory |
---|
| 324 | buffer.</TD> |
---|
| 325 | </TR> |
---|
| 326 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 327 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.html" title="class in org.apache.hadoop.io">SequenceFile</A></B></TD> |
---|
| 328 | <TD><code>SequenceFile</code>s are flat files consisting of binary key/value |
---|
| 329 | pairs.</TD> |
---|
| 330 | </TR> |
---|
| 331 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 332 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Metadata.html" title="class in org.apache.hadoop.io">SequenceFile.Metadata</A></B></TD> |
---|
| 333 | <TD>The class encapsulating with the metadata of a file.</TD> |
---|
| 334 | </TR> |
---|
| 335 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 336 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Reader.html" title="class in org.apache.hadoop.io">SequenceFile.Reader</A></B></TD> |
---|
| 337 | <TD>Reads key/value pairs from a sequence-format file.</TD> |
---|
| 338 | </TR> |
---|
| 339 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 340 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.html" title="class in org.apache.hadoop.io">SequenceFile.Sorter</A></B></TD> |
---|
| 341 | <TD>Sorts key/value pairs in a sequence-format file.</TD> |
---|
| 342 | </TR> |
---|
| 343 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 344 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Writer.html" title="class in org.apache.hadoop.io">SequenceFile.Writer</A></B></TD> |
---|
| 345 | <TD>Write key/value pairs to a sequence-format file.</TD> |
---|
| 346 | </TR> |
---|
| 347 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 348 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/SetFile.html" title="class in org.apache.hadoop.io">SetFile</A></B></TD> |
---|
| 349 | <TD>A file-based set of keys.</TD> |
---|
| 350 | </TR> |
---|
| 351 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 352 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/SetFile.Reader.html" title="class in org.apache.hadoop.io">SetFile.Reader</A></B></TD> |
---|
| 353 | <TD>Provide access to an existing set file.</TD> |
---|
| 354 | </TR> |
---|
| 355 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 356 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/SetFile.Writer.html" title="class in org.apache.hadoop.io">SetFile.Writer</A></B></TD> |
---|
| 357 | <TD>Write a new set file.</TD> |
---|
| 358 | </TR> |
---|
| 359 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 360 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/SortedMapWritable.html" title="class in org.apache.hadoop.io">SortedMapWritable</A></B></TD> |
---|
| 361 | <TD>A Writable SortedMap.</TD> |
---|
| 362 | </TR> |
---|
| 363 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 364 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A></B></TD> |
---|
| 365 | <TD>This class stores text using standard UTF8 encoding.</TD> |
---|
| 366 | </TR> |
---|
| 367 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 368 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/Text.Comparator.html" title="class in org.apache.hadoop.io">Text.Comparator</A></B></TD> |
---|
| 369 | <TD>A WritableComparator optimized for Text keys.</TD> |
---|
| 370 | </TR> |
---|
| 371 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 372 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/TwoDArrayWritable.html" title="class in org.apache.hadoop.io">TwoDArrayWritable</A></B></TD> |
---|
| 373 | <TD>A Writable for 2D arrays containing a matrix of instances of a class.</TD> |
---|
| 374 | </TR> |
---|
| 375 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 376 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/UTF8.html" title="class in org.apache.hadoop.io">UTF8</A></B></TD> |
---|
| 377 | <TD><B>Deprecated.</B> <I>replaced by Text</I></TD> |
---|
| 378 | </TR> |
---|
| 379 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 380 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/UTF8.Comparator.html" title="class in org.apache.hadoop.io">UTF8.Comparator</A></B></TD> |
---|
| 381 | <TD>A WritableComparator optimized for UTF8 keys.</TD> |
---|
| 382 | </TR> |
---|
| 383 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 384 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/VersionedWritable.html" title="class in org.apache.hadoop.io">VersionedWritable</A></B></TD> |
---|
| 385 | <TD>A base class for Writables that provides version checking.</TD> |
---|
| 386 | </TR> |
---|
| 387 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 388 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/VIntWritable.html" title="class in org.apache.hadoop.io">VIntWritable</A></B></TD> |
---|
| 389 | <TD>A WritableComparable for integer values stored in variable-length format.</TD> |
---|
| 390 | </TR> |
---|
| 391 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 392 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/VLongWritable.html" title="class in org.apache.hadoop.io">VLongWritable</A></B></TD> |
---|
| 393 | <TD>A WritableComparable for longs in a variable-length format.</TD> |
---|
| 394 | </TR> |
---|
| 395 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 396 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/WritableComparator.html" title="class in org.apache.hadoop.io">WritableComparator</A></B></TD> |
---|
| 397 | <TD>A Comparator for <A HREF="../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io"><CODE>WritableComparable</CODE></A>s.</TD> |
---|
| 398 | </TR> |
---|
| 399 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 400 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/WritableFactories.html" title="class in org.apache.hadoop.io">WritableFactories</A></B></TD> |
---|
| 401 | <TD>Factories for non-public writables.</TD> |
---|
| 402 | </TR> |
---|
| 403 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 404 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/WritableName.html" title="class in org.apache.hadoop.io">WritableName</A></B></TD> |
---|
| 405 | <TD>Utility to permit renaming of Writable implementation classes without |
---|
| 406 | invalidiating files that contain their class name.</TD> |
---|
| 407 | </TR> |
---|
| 408 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 409 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/WritableUtils.html" title="class in org.apache.hadoop.io">WritableUtils</A></B></TD> |
---|
| 410 | <TD> </TD> |
---|
| 411 | </TR> |
---|
| 412 | </TABLE> |
---|
| 413 | |
---|
| 414 | |
---|
| 415 | <P> |
---|
| 416 | |
---|
| 417 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
---|
| 418 | <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
---|
| 419 | <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> |
---|
| 420 | <B>Enum Summary</B></FONT></TH> |
---|
| 421 | </TR> |
---|
| 422 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 423 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.CompressionType.html" title="enum in org.apache.hadoop.io">SequenceFile.CompressionType</A></B></TD> |
---|
| 424 | <TD>The compression type used to compress key/value pairs in the |
---|
| 425 | <A HREF="../../../../org/apache/hadoop/io/SequenceFile.html" title="class in org.apache.hadoop.io"><CODE>SequenceFile</CODE></A>.</TD> |
---|
| 426 | </TR> |
---|
| 427 | </TABLE> |
---|
| 428 | |
---|
| 429 | |
---|
| 430 | <P> |
---|
| 431 | |
---|
| 432 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
---|
| 433 | <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
---|
| 434 | <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> |
---|
| 435 | <B>Exception Summary</B></FONT></TH> |
---|
| 436 | </TR> |
---|
| 437 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 438 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/MultipleIOException.html" title="class in org.apache.hadoop.io">MultipleIOException</A></B></TD> |
---|
| 439 | <TD>Encapsulate a list of <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io"><CODE>IOException</CODE></A> into an <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io"><CODE>IOException</CODE></A></TD> |
---|
| 440 | </TR> |
---|
| 441 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 442 | <TD WIDTH="15%"><B><A HREF="../../../../org/apache/hadoop/io/VersionMismatchException.html" title="class in org.apache.hadoop.io">VersionMismatchException</A></B></TD> |
---|
| 443 | <TD>Thrown by <A HREF="../../../../org/apache/hadoop/io/VersionedWritable.html#readFields(java.io.DataInput)"><CODE>VersionedWritable.readFields(DataInput)</CODE></A> when the |
---|
| 444 | version of an object being read does not match the current implementation |
---|
| 445 | version as returned by <A HREF="../../../../org/apache/hadoop/io/VersionedWritable.html#getVersion()"><CODE>VersionedWritable.getVersion()</CODE></A>.</TD> |
---|
| 446 | </TR> |
---|
| 447 | </TABLE> |
---|
| 448 | |
---|
| 449 | |
---|
| 450 | <P> |
---|
| 451 | <A NAME="package_description"><!-- --></A><H2> |
---|
| 452 | Package org.apache.hadoop.io Description |
---|
| 453 | </H2> |
---|
| 454 | |
---|
| 455 | <P> |
---|
| 456 | Generic i/o code for use when reading and writing data to the network, |
---|
| 457 | to databases, and to files. |
---|
| 458 | <P> |
---|
| 459 | |
---|
| 460 | <P> |
---|
| 461 | <DL> |
---|
| 462 | </DL> |
---|
| 463 | <HR> |
---|
| 464 | |
---|
| 465 | |
---|
| 466 | <!-- ======= START OF BOTTOM NAVBAR ====== --> |
---|
| 467 | <A NAME="navbar_bottom"><!-- --></A> |
---|
| 468 | <A HREF="#skip-navbar_bottom" title="Skip navigation links"></A> |
---|
| 469 | <TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> |
---|
| 470 | <TR> |
---|
| 471 | <TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> |
---|
| 472 | <A NAME="navbar_bottom_firstrow"><!-- --></A> |
---|
| 473 | <TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> |
---|
| 474 | <TR ALIGN="center" VALIGN="top"> |
---|
| 475 | <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> |
---|
| 476 | <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Package</B></FONT> </TD> |
---|
| 477 | <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <FONT CLASS="NavBarFont1">Class</FONT> </TD> |
---|
| 478 | <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-use.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> |
---|
| 479 | <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> |
---|
| 480 | <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> |
---|
| 481 | <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> |
---|
| 482 | <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> |
---|
| 483 | </TR> |
---|
| 484 | </TABLE> |
---|
| 485 | </TD> |
---|
| 486 | <TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM> |
---|
| 487 | </EM> |
---|
| 488 | </TD> |
---|
| 489 | </TR> |
---|
| 490 | |
---|
| 491 | <TR> |
---|
| 492 | <TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> |
---|
| 493 | <A HREF="../../../../org/apache/hadoop/http/package-summary.html"><B>PREV PACKAGE</B></A> |
---|
| 494 | <A HREF="../../../../org/apache/hadoop/io/compress/package-summary.html"><B>NEXT PACKAGE</B></A></FONT></TD> |
---|
| 495 | <TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> |
---|
| 496 | <A HREF="../../../../index.html?org/apache/hadoop/io/package-summary.html" target="_top"><B>FRAMES</B></A> |
---|
| 497 | <A HREF="package-summary.html" target="_top"><B>NO FRAMES</B></A> |
---|
| 498 | <SCRIPT type="text/javascript"> |
---|
| 499 | <!-- |
---|
| 500 | if(window==top) { |
---|
| 501 | document.writeln('<A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A>'); |
---|
| 502 | } |
---|
| 503 | //--> |
---|
| 504 | </SCRIPT> |
---|
| 505 | <NOSCRIPT> |
---|
| 506 | <A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A> |
---|
| 507 | </NOSCRIPT> |
---|
| 508 | |
---|
| 509 | |
---|
| 510 | </FONT></TD> |
---|
| 511 | </TR> |
---|
| 512 | </TABLE> |
---|
| 513 | <A NAME="skip-navbar_bottom"></A> |
---|
| 514 | <!-- ======== END OF BOTTOM NAVBAR ======= --> |
---|
| 515 | |
---|
| 516 | <HR> |
---|
| 517 | Copyright © 2009 The Apache Software Foundation |
---|
| 518 | </BODY> |
---|
| 519 | </HTML> |
---|