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7AggregateWordHistogram.AggregateWordHistogramPlugin (Hadoop 0.20.1 API)
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91org.apache.hadoop.examples</FONT>
92<BR>
93Class AggregateWordHistogram.AggregateWordHistogramPlugin</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 "><A HREF="../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorBaseDescriptor.html" title="class in org.apache.hadoop.mapred.lib.aggregate">org.apache.hadoop.mapred.lib.aggregate.ValueAggregatorBaseDescriptor</A>
97      <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.hadoop.examples.AggregateWordHistogram.AggregateWordHistogramPlugin</B>
98</PRE>
99<DL>
100<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorDescriptor.html" title="interface in org.apache.hadoop.mapred.lib.aggregate">ValueAggregatorDescriptor</A></DD>
101</DL>
102<DL>
103<DT><B>Enclosing class:</B><DD><A HREF="../../../../org/apache/hadoop/examples/AggregateWordHistogram.html" title="class in org.apache.hadoop.examples">AggregateWordHistogram</A></DD>
104</DL>
105<HR>
106<DL>
107<DT><PRE>public static class <B>AggregateWordHistogram.AggregateWordHistogramPlugin</B><DT>extends <A HREF="../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorBaseDescriptor.html" title="class in org.apache.hadoop.mapred.lib.aggregate">ValueAggregatorBaseDescriptor</A></DL>
108</PRE>
109
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112
113<P>
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119<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
120<B>Field Summary</B></FONT></TH>
121</TR>
122</TABLE>
123&nbsp;<A NAME="fields_inherited_from_class_org.apache.hadoop.mapred.lib.aggregate.ValueAggregatorBaseDescriptor"><!-- --></A>
124<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
125<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
126<TH ALIGN="left"><B>Fields inherited from class org.apache.hadoop.mapred.lib.aggregate.<A HREF="../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorBaseDescriptor.html" title="class in org.apache.hadoop.mapred.lib.aggregate">ValueAggregatorBaseDescriptor</A></B></TH>
127</TR>
128<TR BGCOLOR="white" CLASS="TableRowColor">
129<TD><CODE><A HREF="../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorBaseDescriptor.html#DOUBLE_VALUE_SUM">DOUBLE_VALUE_SUM</A>, <A HREF="../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorBaseDescriptor.html#inputFile">inputFile</A>, <A HREF="../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorBaseDescriptor.html#LONG_VALUE_MAX">LONG_VALUE_MAX</A>, <A HREF="../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorBaseDescriptor.html#LONG_VALUE_MIN">LONG_VALUE_MIN</A>, <A HREF="../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorBaseDescriptor.html#LONG_VALUE_SUM">LONG_VALUE_SUM</A>, <A HREF="../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorBaseDescriptor.html#STRING_VALUE_MAX">STRING_VALUE_MAX</A>, <A HREF="../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorBaseDescriptor.html#STRING_VALUE_MIN">STRING_VALUE_MIN</A>, <A HREF="../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorBaseDescriptor.html#UNIQ_VALUE_COUNT">UNIQ_VALUE_COUNT</A>, <A HREF="../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorBaseDescriptor.html#VALUE_HISTOGRAM">VALUE_HISTOGRAM</A></CODE></TD>
130</TR>
131</TABLE>
132&nbsp;<A NAME="fields_inherited_from_class_org.apache.hadoop.mapred.lib.aggregate.ValueAggregatorDescriptor"><!-- --></A>
133<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
134<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
135<TH ALIGN="left"><B>Fields inherited from interface org.apache.hadoop.mapred.lib.aggregate.<A HREF="../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorDescriptor.html" title="interface in org.apache.hadoop.mapred.lib.aggregate">ValueAggregatorDescriptor</A></B></TH>
136</TR>
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138<TD><CODE><A HREF="../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorDescriptor.html#ONE">ONE</A>, <A HREF="../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorDescriptor.html#TYPE_SEPARATOR">TYPE_SEPARATOR</A></CODE></TD>
139</TR>
140</TABLE>
141&nbsp;
142<!-- ======== CONSTRUCTOR SUMMARY ======== -->
143
144<A NAME="constructor_summary"><!-- --></A>
145<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
146<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
147<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
148<B>Constructor Summary</B></FONT></TH>
149</TR>
150<TR BGCOLOR="white" CLASS="TableRowColor">
151<TD><CODE><B><A HREF="../../../../org/apache/hadoop/examples/AggregateWordHistogram.AggregateWordHistogramPlugin.html#AggregateWordHistogram.AggregateWordHistogramPlugin()">AggregateWordHistogram.AggregateWordHistogramPlugin</A></B>()</CODE>
152
153<BR>
154&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
155</TR>
156</TABLE>
157&nbsp;
158<!-- ========== METHOD SUMMARY =========== -->
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164<B>Method Summary</B></FONT></TH>
165</TR>
166<TR BGCOLOR="white" CLASS="TableRowColor">
167<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
168<CODE>&nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/util/ArrayList.html?is-external=true" title="class or interface in java.util">ArrayList</A>&lt;<A HREF="http://java.sun.com/javase/6/docs/api/java/util/Map.Entry.html?is-external=true" title="class or interface in java.util">Map.Entry</A>&lt;<A HREF="../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>,<A HREF="../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>&gt;&gt;</CODE></FONT></TD>
169<TD><CODE><B><A HREF="../../../../org/apache/hadoop/examples/AggregateWordHistogram.AggregateWordHistogramPlugin.html#generateKeyValPairs(java.lang.Object, java.lang.Object)">generateKeyValPairs</A></B>(<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>&nbsp;key,
170                    <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>&nbsp;val)</CODE>
171
172<BR>
173&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Parse the given value, generate an aggregation-id/value pair per word.</TD>
174</TR>
175</TABLE>
176&nbsp;<A NAME="methods_inherited_from_class_org.apache.hadoop.mapred.lib.aggregate.ValueAggregatorBaseDescriptor"><!-- --></A>
177<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
178<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
179<TH ALIGN="left"><B>Methods inherited from class org.apache.hadoop.mapred.lib.aggregate.<A HREF="../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorBaseDescriptor.html" title="class in org.apache.hadoop.mapred.lib.aggregate">ValueAggregatorBaseDescriptor</A></B></TH>
180</TR>
181<TR BGCOLOR="white" CLASS="TableRowColor">
182<TD><CODE><A HREF="../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorBaseDescriptor.html#configure(org.apache.hadoop.mapred.JobConf)">configure</A>, <A HREF="../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorBaseDescriptor.html#generateEntry(java.lang.String, java.lang.String, org.apache.hadoop.io.Text)">generateEntry</A>, <A HREF="../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorBaseDescriptor.html#generateValueAggregator(java.lang.String)">generateValueAggregator</A></CODE></TD>
183</TR>
184</TABLE>
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188<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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192</TR>
193</TABLE>
194&nbsp;
195<P>
196
197<!-- ========= CONSTRUCTOR DETAIL ======== -->
198
199<A NAME="constructor_detail"><!-- --></A>
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202<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
203<B>Constructor Detail</B></FONT></TH>
204</TR>
205</TABLE>
206
207<A NAME="AggregateWordHistogram.AggregateWordHistogramPlugin()"><!-- --></A><H3>
208AggregateWordHistogram.AggregateWordHistogramPlugin</H3>
209<PRE>
210public <B>AggregateWordHistogram.AggregateWordHistogramPlugin</B>()</PRE>
211<DL>
212</DL>
213
214<!-- ============ METHOD DETAIL ========== -->
215
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220<B>Method Detail</B></FONT></TH>
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222</TABLE>
223
224<A NAME="generateKeyValPairs(java.lang.Object, java.lang.Object)"><!-- --></A><H3>
225generateKeyValPairs</H3>
226<PRE>
227public <A HREF="http://java.sun.com/javase/6/docs/api/java/util/ArrayList.html?is-external=true" title="class or interface in java.util">ArrayList</A>&lt;<A HREF="http://java.sun.com/javase/6/docs/api/java/util/Map.Entry.html?is-external=true" title="class or interface in java.util">Map.Entry</A>&lt;<A HREF="../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>,<A HREF="../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>&gt;&gt; <B>generateKeyValPairs</B>(<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>&nbsp;key,
228                                                           <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>&nbsp;val)</PRE>
229<DL>
230<DD>Parse the given value, generate an aggregation-id/value pair per word.
231 The ID is of type VALUE_HISTOGRAM, with WORD_HISTOGRAM as the real id.
232 The value is WORD\t1.
233<P>
234<DD><DL>
235<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorDescriptor.html#generateKeyValPairs(java.lang.Object, java.lang.Object)">generateKeyValPairs</A></CODE> in interface <CODE><A HREF="../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorDescriptor.html" title="interface in org.apache.hadoop.mapred.lib.aggregate">ValueAggregatorDescriptor</A></CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorBaseDescriptor.html#generateKeyValPairs(java.lang.Object, java.lang.Object)">generateKeyValPairs</A></CODE> in class <CODE><A HREF="../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorBaseDescriptor.html" title="class in org.apache.hadoop.mapred.lib.aggregate">ValueAggregatorBaseDescriptor</A></CODE></DL>
236</DD>
237<DD><DL>
238<DT><B>Parameters:</B><DD><CODE>key</CODE> - input key<DD><CODE>val</CODE> - input value
239<DT><B>Returns:</B><DD>a list of the generated pairs.</DL>
240</DD>
241</DL>
242<!-- ========= END OF CLASS DATA ========= -->
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