[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 20:56:57 UTC 2009 --> |
---|
| 6 | <TITLE> |
---|
| 7 | CompositeInputFormat (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="CompositeInputFormat (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="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> |
---|
| 42 | <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> |
---|
| 43 | <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/CompositeInputFormat.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/mapred/join/ComposableRecordReader.html" title="interface in org.apache.hadoop.mapred.join"><B>PREV CLASS</B></A> |
---|
| 59 | <A HREF="../../../../../org/apache/hadoop/mapred/join/CompositeInputSplit.html" title="class in org.apache.hadoop.mapred.join"><B>NEXT CLASS</B></A></FONT></TD> |
---|
| 60 | <TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> |
---|
| 61 | <A HREF="../../../../../index.html?org/apache/hadoop/mapred/join/CompositeInputFormat.html" target="_top"><B>FRAMES</B></A> |
---|
| 62 | <A HREF="CompositeInputFormat.html" target="_top"><B>NO FRAMES</B></A> |
---|
| 63 | <SCRIPT type="text/javascript"> |
---|
| 64 | <!-- |
---|
| 65 | if(window==top) { |
---|
| 66 | document.writeln('<A HREF="../../../../../allclasses-noframe.html"><B>All Classes</B></A>'); |
---|
| 67 | } |
---|
| 68 | //--> |
---|
| 69 | </SCRIPT> |
---|
| 70 | <NOSCRIPT> |
---|
| 71 | <A HREF="../../../../../allclasses-noframe.html"><B>All Classes</B></A> |
---|
| 72 | </NOSCRIPT> |
---|
| 73 | |
---|
| 74 | |
---|
| 75 | </FONT></TD> |
---|
| 76 | </TR> |
---|
| 77 | <TR> |
---|
| 78 | <TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> |
---|
| 79 | SUMMARY: NESTED | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD> |
---|
| 80 | <TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> |
---|
| 81 | DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD> |
---|
| 82 | </TR> |
---|
| 83 | </TABLE> |
---|
| 84 | <A NAME="skip-navbar_top"></A> |
---|
| 85 | <!-- ========= END OF TOP NAVBAR ========= --> |
---|
| 86 | |
---|
| 87 | <HR> |
---|
| 88 | <!-- ======== START OF CLASS DATA ======== --> |
---|
| 89 | <H2> |
---|
| 90 | <FONT SIZE="-1"> |
---|
| 91 | org.apache.hadoop.mapred.join</FONT> |
---|
| 92 | <BR> |
---|
| 93 | Class CompositeInputFormat<K extends <A HREF="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</A>></H2> |
---|
| 94 | <PRE> |
---|
| 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> |
---|
| 96 | <IMG SRC="../../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.hadoop.mapred.join.CompositeInputFormat<K></B> |
---|
| 97 | </PRE> |
---|
| 98 | <DL> |
---|
| 99 | <DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../../org/apache/hadoop/mapred/InputFormat.html" title="interface in org.apache.hadoop.mapred">InputFormat</A><K,<A HREF="../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</A>>, <A HREF="../../../../../org/apache/hadoop/mapred/join/ComposableInputFormat.html" title="interface in org.apache.hadoop.mapred.join">ComposableInputFormat</A><K,<A HREF="../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</A>></DD> |
---|
| 100 | </DL> |
---|
| 101 | <HR> |
---|
| 102 | <DL> |
---|
| 103 | <DT><PRE>public class <B>CompositeInputFormat<K extends <A HREF="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</A>></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="../../../../../org/apache/hadoop/mapred/join/ComposableInputFormat.html" title="interface in org.apache.hadoop.mapred.join">ComposableInputFormat</A><K,<A HREF="../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</A>></DL> |
---|
| 104 | </PRE> |
---|
| 105 | |
---|
| 106 | <P> |
---|
| 107 | An InputFormat capable of performing joins over a set of data sources sorted |
---|
| 108 | and partitioned the same way. |
---|
| 109 | <P> |
---|
| 110 | |
---|
| 111 | <P> |
---|
| 112 | <DL> |
---|
| 113 | <DT><B>See Also:</B><DD><A HREF="../../../../../org/apache/hadoop/mapred/join/CompositeInputFormat.html#setFormat(org.apache.hadoop.mapred.JobConf)"><CODE>A user may define new join types by setting the property |
---|
| 114 | <tt>mapred.join.define.<ident></tt> to a classname. In the expression |
---|
| 115 | <tt>mapred.join.expr</tt>, the identifier will be assumed to be a |
---|
| 116 | ComposableRecordReader. |
---|
| 117 | <tt>mapred.join.keycomparator</tt> can be a classname used to compare keys |
---|
| 118 | in the join.</CODE></A>, |
---|
| 119 | <A HREF="../../../../../org/apache/hadoop/mapred/join/JoinRecordReader.html" title="class in org.apache.hadoop.mapred.join"><CODE>JoinRecordReader</CODE></A>, |
---|
| 120 | <A HREF="../../../../../org/apache/hadoop/mapred/join/MultiFilterRecordReader.html" title="class in org.apache.hadoop.mapred.join"><CODE>MultiFilterRecordReader</CODE></A></DL> |
---|
| 121 | <HR> |
---|
| 122 | |
---|
| 123 | <P> |
---|
| 124 | |
---|
| 125 | <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
---|
| 126 | |
---|
| 127 | <A NAME="constructor_summary"><!-- --></A> |
---|
| 128 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
---|
| 129 | <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
---|
| 130 | <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> |
---|
| 131 | <B>Constructor Summary</B></FONT></TH> |
---|
| 132 | </TR> |
---|
| 133 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 134 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/join/CompositeInputFormat.html#CompositeInputFormat()">CompositeInputFormat</A></B>()</CODE> |
---|
| 135 | |
---|
| 136 | <BR> |
---|
| 137 | </TD> |
---|
| 138 | </TR> |
---|
| 139 | </TABLE> |
---|
| 140 | |
---|
| 141 | <!-- ========== METHOD SUMMARY =========== --> |
---|
| 142 | |
---|
| 143 | <A NAME="method_summary"><!-- --></A> |
---|
| 144 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
---|
| 145 | <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
---|
| 146 | <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> |
---|
| 147 | <B>Method Summary</B></FONT></TH> |
---|
| 148 | </TR> |
---|
| 149 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 150 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
---|
| 151 | <CODE>protected void</CODE></FONT></TD> |
---|
| 152 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/join/CompositeInputFormat.html#addDefaults()">addDefaults</A></B>()</CODE> |
---|
| 153 | |
---|
| 154 | <BR> |
---|
| 155 | Adds the default set of identifiers to the parser.</TD> |
---|
| 156 | </TR> |
---|
| 157 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 158 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
---|
| 159 | <CODE>static <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD> |
---|
| 160 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/join/CompositeInputFormat.html#compose(java.lang.Class, java.lang.String)">compose</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><? extends <A HREF="../../../../../org/apache/hadoop/mapred/InputFormat.html" title="interface in org.apache.hadoop.mapred">InputFormat</A>> inf, |
---|
| 161 | <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> path)</CODE> |
---|
| 162 | |
---|
| 163 | <BR> |
---|
| 164 | Convenience method for constructing composite formats.</TD> |
---|
| 165 | </TR> |
---|
| 166 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 167 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
---|
| 168 | <CODE>static <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD> |
---|
| 169 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/join/CompositeInputFormat.html#compose(java.lang.String, java.lang.Class, org.apache.hadoop.fs.Path...)">compose</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> op, |
---|
| 170 | <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><? extends <A HREF="../../../../../org/apache/hadoop/mapred/InputFormat.html" title="interface in org.apache.hadoop.mapred">InputFormat</A>> inf, |
---|
| 171 | <A HREF="../../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>... path)</CODE> |
---|
| 172 | |
---|
| 173 | <BR> |
---|
| 174 | Convenience method for constructing composite formats.</TD> |
---|
| 175 | </TR> |
---|
| 176 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 177 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
---|
| 178 | <CODE>static <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD> |
---|
| 179 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/join/CompositeInputFormat.html#compose(java.lang.String, java.lang.Class, java.lang.String...)">compose</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> op, |
---|
| 180 | <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><? extends <A HREF="../../../../../org/apache/hadoop/mapred/InputFormat.html" title="interface in org.apache.hadoop.mapred">InputFormat</A>> inf, |
---|
| 181 | <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>... path)</CODE> |
---|
| 182 | |
---|
| 183 | <BR> |
---|
| 184 | Convenience method for constructing composite formats.</TD> |
---|
| 185 | </TR> |
---|
| 186 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 187 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
---|
| 188 | <CODE> <A HREF="../../../../../org/apache/hadoop/mapred/join/ComposableRecordReader.html" title="interface in org.apache.hadoop.mapred.join">ComposableRecordReader</A><<A HREF="../../../../../org/apache/hadoop/mapred/join/CompositeInputFormat.html" title="type parameter in CompositeInputFormat">K</A>,<A HREF="../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</A>></CODE></FONT></TD> |
---|
| 189 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/join/CompositeInputFormat.html#getRecordReader(org.apache.hadoop.mapred.InputSplit, org.apache.hadoop.mapred.JobConf, org.apache.hadoop.mapred.Reporter)">getRecordReader</A></B>(<A HREF="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</A> split, |
---|
| 190 | <A HREF="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</A> job, |
---|
| 191 | <A HREF="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</A> reporter)</CODE> |
---|
| 192 | |
---|
| 193 | <BR> |
---|
| 194 | Construct a CompositeRecordReader for the children of this InputFormat |
---|
| 195 | as defined in the init expression.</TD> |
---|
| 196 | </TR> |
---|
| 197 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 198 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
---|
| 199 | <CODE> <A HREF="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</A>[]</CODE></FONT></TD> |
---|
| 200 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/join/CompositeInputFormat.html#getSplits(org.apache.hadoop.mapred.JobConf, int)">getSplits</A></B>(<A HREF="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</A> job, |
---|
| 201 | int numSplits)</CODE> |
---|
| 202 | |
---|
| 203 | <BR> |
---|
| 204 | Build a CompositeInputSplit from the child InputFormats by assigning the |
---|
| 205 | ith split from each child to the ith composite split.</TD> |
---|
| 206 | </TR> |
---|
| 207 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 208 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
---|
| 209 | <CODE> void</CODE></FONT></TD> |
---|
| 210 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/join/CompositeInputFormat.html#setFormat(org.apache.hadoop.mapred.JobConf)">setFormat</A></B>(<A HREF="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</A> job)</CODE> |
---|
| 211 | |
---|
| 212 | <BR> |
---|
| 213 | Interpret a given string as a composite expression.</TD> |
---|
| 214 | </TR> |
---|
| 215 | </TABLE> |
---|
| 216 | <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A> |
---|
| 217 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
---|
| 218 | <TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"> |
---|
| 219 | <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> |
---|
| 220 | </TR> |
---|
| 221 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
---|
| 222 | <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> |
---|
| 223 | </TR> |
---|
| 224 | </TABLE> |
---|
| 225 | |
---|
| 226 | <P> |
---|
| 227 | |
---|
| 228 | <!-- ========= CONSTRUCTOR DETAIL ======== --> |
---|
| 229 | |
---|
| 230 | <A NAME="constructor_detail"><!-- --></A> |
---|
| 231 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
---|
| 232 | <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
---|
| 233 | <TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> |
---|
| 234 | <B>Constructor Detail</B></FONT></TH> |
---|
| 235 | </TR> |
---|
| 236 | </TABLE> |
---|
| 237 | |
---|
| 238 | <A NAME="CompositeInputFormat()"><!-- --></A><H3> |
---|
| 239 | CompositeInputFormat</H3> |
---|
| 240 | <PRE> |
---|
| 241 | public <B>CompositeInputFormat</B>()</PRE> |
---|
| 242 | <DL> |
---|
| 243 | </DL> |
---|
| 244 | |
---|
| 245 | <!-- ============ METHOD DETAIL ========== --> |
---|
| 246 | |
---|
| 247 | <A NAME="method_detail"><!-- --></A> |
---|
| 248 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
---|
| 249 | <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
---|
| 250 | <TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> |
---|
| 251 | <B>Method Detail</B></FONT></TH> |
---|
| 252 | </TR> |
---|
| 253 | </TABLE> |
---|
| 254 | |
---|
| 255 | <A NAME="setFormat(org.apache.hadoop.mapred.JobConf)"><!-- --></A><H3> |
---|
| 256 | setFormat</H3> |
---|
| 257 | <PRE> |
---|
| 258 | public void <B>setFormat</B>(<A HREF="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</A> job) |
---|
| 259 | 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> |
---|
| 260 | <DL> |
---|
| 261 | <DD>Interpret a given string as a composite expression. |
---|
| 262 | <code>func ::= <ident>([<func>,]*<func>) |
---|
| 263 | func ::= tbl(<class>,"<path>") |
---|
| 264 | class ::= @see java.lang.Class#forName(java.lang.String) |
---|
| 265 | path ::= @see org.apache.hadoop.fs.Path#Path(java.lang.String) |
---|
| 266 | </code> |
---|
| 267 | Reads expression from the <tt>mapred.join.expr</tt> property and |
---|
| 268 | user-supplied join types from <tt>mapred.join.define.<ident></tt> |
---|
| 269 | types. Paths supplied to <tt>tbl</tt> are given as input paths to the |
---|
| 270 | InputFormat class listed. |
---|
| 271 | <P> |
---|
| 272 | <DD><DL> |
---|
| 273 | </DL> |
---|
| 274 | </DD> |
---|
| 275 | <DD><DL> |
---|
| 276 | |
---|
| 277 | <DT><B>Throws:</B> |
---|
| 278 | <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><DT><B>See Also:</B><DD><A HREF="../../../../../org/apache/hadoop/mapred/join/CompositeInputFormat.html#compose(java.lang.String, java.lang.Class, java.lang.String...)"><CODE>compose(java.lang.String, java.lang.Class, java.lang.String...)</CODE></A></DL> |
---|
| 279 | </DD> |
---|
| 280 | </DL> |
---|
| 281 | <HR> |
---|
| 282 | |
---|
| 283 | <A NAME="addDefaults()"><!-- --></A><H3> |
---|
| 284 | addDefaults</H3> |
---|
| 285 | <PRE> |
---|
| 286 | protected void <B>addDefaults</B>()</PRE> |
---|
| 287 | <DL> |
---|
| 288 | <DD>Adds the default set of identifiers to the parser. |
---|
| 289 | <P> |
---|
| 290 | <DD><DL> |
---|
| 291 | </DL> |
---|
| 292 | </DD> |
---|
| 293 | <DD><DL> |
---|
| 294 | </DL> |
---|
| 295 | </DD> |
---|
| 296 | </DL> |
---|
| 297 | <HR> |
---|
| 298 | |
---|
| 299 | <A NAME="getSplits(org.apache.hadoop.mapred.JobConf, int)"><!-- --></A><H3> |
---|
| 300 | getSplits</H3> |
---|
| 301 | <PRE> |
---|
| 302 | public <A HREF="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</A>[] <B>getSplits</B>(<A HREF="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</A> job, |
---|
| 303 | int numSplits) |
---|
| 304 | 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> |
---|
| 305 | <DL> |
---|
| 306 | <DD>Build a CompositeInputSplit from the child InputFormats by assigning the |
---|
| 307 | ith split from each child to the ith composite split. |
---|
| 308 | <P> |
---|
| 309 | <DD><DL> |
---|
| 310 | <DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/apache/hadoop/mapred/InputFormat.html#getSplits(org.apache.hadoop.mapred.JobConf, int)">getSplits</A></CODE> in interface <CODE><A HREF="../../../../../org/apache/hadoop/mapred/InputFormat.html" title="interface in org.apache.hadoop.mapred">InputFormat</A><<A HREF="../../../../../org/apache/hadoop/mapred/join/CompositeInputFormat.html" title="type parameter in CompositeInputFormat">K</A> extends <A HREF="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</A>,<A HREF="../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</A>></CODE></DL> |
---|
| 311 | </DD> |
---|
| 312 | <DD><DL> |
---|
| 313 | <DT><B>Parameters:</B><DD><CODE>job</CODE> - job configuration.<DD><CODE>numSplits</CODE> - the desired number of splits, a hint. |
---|
| 314 | <DT><B>Returns:</B><DD>an array of <A HREF="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred"><CODE>InputSplit</CODE></A>s for the job. |
---|
| 315 | <DT><B>Throws:</B> |
---|
| 316 | <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> |
---|
| 317 | </DD> |
---|
| 318 | </DL> |
---|
| 319 | <HR> |
---|
| 320 | |
---|
| 321 | <A NAME="getRecordReader(org.apache.hadoop.mapred.InputSplit, org.apache.hadoop.mapred.JobConf, org.apache.hadoop.mapred.Reporter)"><!-- --></A><H3> |
---|
| 322 | getRecordReader</H3> |
---|
| 323 | <PRE> |
---|
| 324 | public <A HREF="../../../../../org/apache/hadoop/mapred/join/ComposableRecordReader.html" title="interface in org.apache.hadoop.mapred.join">ComposableRecordReader</A><<A HREF="../../../../../org/apache/hadoop/mapred/join/CompositeInputFormat.html" title="type parameter in CompositeInputFormat">K</A>,<A HREF="../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</A>> <B>getRecordReader</B>(<A HREF="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</A> split, |
---|
| 325 | <A HREF="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</A> job, |
---|
| 326 | <A HREF="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</A> reporter) |
---|
| 327 | 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> |
---|
| 328 | <DL> |
---|
| 329 | <DD>Construct a CompositeRecordReader for the children of this InputFormat |
---|
| 330 | as defined in the init expression. |
---|
| 331 | The outermost join need only be composable, not necessarily a composite. |
---|
| 332 | Mandating TupleWritable isn't strictly correct. |
---|
| 333 | <P> |
---|
| 334 | <DD><DL> |
---|
| 335 | <DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/apache/hadoop/mapred/InputFormat.html#getRecordReader(org.apache.hadoop.mapred.InputSplit, org.apache.hadoop.mapred.JobConf, org.apache.hadoop.mapred.Reporter)">getRecordReader</A></CODE> in interface <CODE><A HREF="../../../../../org/apache/hadoop/mapred/InputFormat.html" title="interface in org.apache.hadoop.mapred">InputFormat</A><<A HREF="../../../../../org/apache/hadoop/mapred/join/CompositeInputFormat.html" title="type parameter in CompositeInputFormat">K</A> extends <A HREF="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</A>,<A HREF="../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</A>></CODE><DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/apache/hadoop/mapred/join/ComposableInputFormat.html#getRecordReader(org.apache.hadoop.mapred.InputSplit, org.apache.hadoop.mapred.JobConf, org.apache.hadoop.mapred.Reporter)">getRecordReader</A></CODE> in interface <CODE><A HREF="../../../../../org/apache/hadoop/mapred/join/ComposableInputFormat.html" title="interface in org.apache.hadoop.mapred.join">ComposableInputFormat</A><<A HREF="../../../../../org/apache/hadoop/mapred/join/CompositeInputFormat.html" title="type parameter in CompositeInputFormat">K</A> extends <A HREF="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</A>,<A HREF="../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</A>></CODE></DL> |
---|
| 336 | </DD> |
---|
| 337 | <DD><DL> |
---|
| 338 | <DT><B>Parameters:</B><DD><CODE>split</CODE> - the <A HREF="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred"><CODE>InputSplit</CODE></A><DD><CODE>job</CODE> - the job that this split belongs to |
---|
| 339 | <DT><B>Returns:</B><DD>a <A HREF="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred"><CODE>RecordReader</CODE></A> |
---|
| 340 | <DT><B>Throws:</B> |
---|
| 341 | <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> |
---|
| 342 | </DD> |
---|
| 343 | </DL> |
---|
| 344 | <HR> |
---|
| 345 | |
---|
| 346 | <A NAME="compose(java.lang.Class, java.lang.String)"><!-- --></A><H3> |
---|
| 347 | compose</H3> |
---|
| 348 | <PRE> |
---|
| 349 | public static <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>compose</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><? extends <A HREF="../../../../../org/apache/hadoop/mapred/InputFormat.html" title="interface in org.apache.hadoop.mapred">InputFormat</A>> inf, |
---|
| 350 | <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> path)</PRE> |
---|
| 351 | <DL> |
---|
| 352 | <DD>Convenience method for constructing composite formats. |
---|
| 353 | Given InputFormat class (inf), path (p) return: |
---|
| 354 | <code>tbl(<inf>, <p>) </code> |
---|
| 355 | <P> |
---|
| 356 | <DD><DL> |
---|
| 357 | </DL> |
---|
| 358 | </DD> |
---|
| 359 | <DD><DL> |
---|
| 360 | </DL> |
---|
| 361 | </DD> |
---|
| 362 | </DL> |
---|
| 363 | <HR> |
---|
| 364 | |
---|
| 365 | <A NAME="compose(java.lang.String, java.lang.Class, java.lang.String...)"><!-- --></A><H3> |
---|
| 366 | compose</H3> |
---|
| 367 | <PRE> |
---|
| 368 | public static <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>compose</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> op, |
---|
| 369 | <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><? extends <A HREF="../../../../../org/apache/hadoop/mapred/InputFormat.html" title="interface in org.apache.hadoop.mapred">InputFormat</A>> inf, |
---|
| 370 | <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>... path)</PRE> |
---|
| 371 | <DL> |
---|
| 372 | <DD>Convenience method for constructing composite formats. |
---|
| 373 | Given operation (op), Object class (inf), set of paths (p) return: |
---|
| 374 | <code><op>(tbl(<inf>,<p1>),tbl(<inf>,<p2>),...,tbl(<inf>,<pn>)) </code> |
---|
| 375 | <P> |
---|
| 376 | <DD><DL> |
---|
| 377 | </DL> |
---|
| 378 | </DD> |
---|
| 379 | <DD><DL> |
---|
| 380 | </DL> |
---|
| 381 | </DD> |
---|
| 382 | </DL> |
---|
| 383 | <HR> |
---|
| 384 | |
---|
| 385 | <A NAME="compose(java.lang.String, java.lang.Class, org.apache.hadoop.fs.Path...)"><!-- --></A><H3> |
---|
| 386 | compose</H3> |
---|
| 387 | <PRE> |
---|
| 388 | public static <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>compose</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> op, |
---|
| 389 | <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><? extends <A HREF="../../../../../org/apache/hadoop/mapred/InputFormat.html" title="interface in org.apache.hadoop.mapred">InputFormat</A>> inf, |
---|
| 390 | <A HREF="../../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>... path)</PRE> |
---|
| 391 | <DL> |
---|
| 392 | <DD>Convenience method for constructing composite formats. |
---|
| 393 | Given operation (op), Object class (inf), set of paths (p) return: |
---|
| 394 | <code><op>(tbl(<inf>,<p1>),tbl(<inf>,<p2>),...,tbl(<inf>,<pn>)) </code> |
---|
| 395 | <P> |
---|
| 396 | <DD><DL> |
---|
| 397 | </DL> |
---|
| 398 | </DD> |
---|
| 399 | <DD><DL> |
---|
| 400 | </DL> |
---|
| 401 | </DD> |
---|
| 402 | </DL> |
---|
| 403 | <!-- ========= END OF CLASS DATA ========= --> |
---|
| 404 | <HR> |
---|
| 405 | |
---|
| 406 | |
---|
| 407 | <!-- ======= START OF BOTTOM NAVBAR ====== --> |
---|
| 408 | <A NAME="navbar_bottom"><!-- --></A> |
---|
| 409 | <A HREF="#skip-navbar_bottom" title="Skip navigation links"></A> |
---|
| 410 | <TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> |
---|
| 411 | <TR> |
---|
| 412 | <TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> |
---|
| 413 | <A NAME="navbar_bottom_firstrow"><!-- --></A> |
---|
| 414 | <TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> |
---|
| 415 | <TR ALIGN="center" VALIGN="top"> |
---|
| 416 | <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> |
---|
| 417 | <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> |
---|
| 418 | <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> |
---|
| 419 | <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/CompositeInputFormat.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> |
---|
| 420 | <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> |
---|
| 421 | <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> |
---|
| 422 | <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> |
---|
| 423 | <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> |
---|
| 424 | </TR> |
---|
| 425 | </TABLE> |
---|
| 426 | </TD> |
---|
| 427 | <TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM> |
---|
| 428 | </EM> |
---|
| 429 | </TD> |
---|
| 430 | </TR> |
---|
| 431 | |
---|
| 432 | <TR> |
---|
| 433 | <TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> |
---|
| 434 | <A HREF="../../../../../org/apache/hadoop/mapred/join/ComposableRecordReader.html" title="interface in org.apache.hadoop.mapred.join"><B>PREV CLASS</B></A> |
---|
| 435 | <A HREF="../../../../../org/apache/hadoop/mapred/join/CompositeInputSplit.html" title="class in org.apache.hadoop.mapred.join"><B>NEXT CLASS</B></A></FONT></TD> |
---|
| 436 | <TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> |
---|
| 437 | <A HREF="../../../../../index.html?org/apache/hadoop/mapred/join/CompositeInputFormat.html" target="_top"><B>FRAMES</B></A> |
---|
| 438 | <A HREF="CompositeInputFormat.html" target="_top"><B>NO FRAMES</B></A> |
---|
| 439 | <SCRIPT type="text/javascript"> |
---|
| 440 | <!-- |
---|
| 441 | if(window==top) { |
---|
| 442 | document.writeln('<A HREF="../../../../../allclasses-noframe.html"><B>All Classes</B></A>'); |
---|
| 443 | } |
---|
| 444 | //--> |
---|
| 445 | </SCRIPT> |
---|
| 446 | <NOSCRIPT> |
---|
| 447 | <A HREF="../../../../../allclasses-noframe.html"><B>All Classes</B></A> |
---|
| 448 | </NOSCRIPT> |
---|
| 449 | |
---|
| 450 | |
---|
| 451 | </FONT></TD> |
---|
| 452 | </TR> |
---|
| 453 | <TR> |
---|
| 454 | <TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> |
---|
| 455 | SUMMARY: NESTED | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD> |
---|
| 456 | <TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> |
---|
| 457 | DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD> |
---|
| 458 | </TR> |
---|
| 459 | </TABLE> |
---|
| 460 | <A NAME="skip-navbar_bottom"></A> |
---|
| 461 | <!-- ======== END OF BOTTOM NAVBAR ======= --> |
---|
| 462 | |
---|
| 463 | <HR> |
---|
| 464 | Copyright © 2009 The Apache Software Foundation |
---|
| 465 | </BODY> |
---|
| 466 | </HTML> |
---|