source: proiecte/HadoopJUnit/hadoop-0.20.1/docs/api/org/apache/hadoop/examples/DBCountPageView.html @ 120

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7DBCountPageView (Hadoop 0.20.1 API)
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91org.apache.hadoop.examples</FONT>
92<BR>
93Class DBCountPageView</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/conf/Configured.html" title="class in org.apache.hadoop.conf">org.apache.hadoop.conf.Configured</A>
97      <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.hadoop.examples.DBCountPageView</B>
98</PRE>
99<DL>
100<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../org/apache/hadoop/conf/Configurable.html" title="interface in org.apache.hadoop.conf">Configurable</A>, <A HREF="../../../../org/apache/hadoop/util/Tool.html" title="interface in org.apache.hadoop.util">Tool</A></DD>
101</DL>
102<HR>
103<DL>
104<DT><PRE>public class <B>DBCountPageView</B><DT>extends <A HREF="../../../../org/apache/hadoop/conf/Configured.html" title="class in org.apache.hadoop.conf">Configured</A><DT>implements <A HREF="../../../../org/apache/hadoop/util/Tool.html" title="interface in org.apache.hadoop.util">Tool</A></DL>
105</PRE>
106
107<P>
108This is a demonstrative program, which uses DBInputFormat for reading
109 the input data from a database, and DBOutputFormat for writing the data
110 to the database.
111 <br>
112 The Program first creates the necessary tables, populates the input table
113 and runs the mapred job.
114 <br> 
115 The input data is a mini access log, with a <code>&lt;url,referrer,time&gt;
116 </code> schema.The output is the number of pageviews of each url in the log,
117 having the schema <code>&lt;url,pageview&gt;</code>. 
118 
119 When called with no arguments the program starts a local HSQLDB server, and
120 uses this database for storing/retrieving the data.
121<P>
122
123<P>
124<HR>
125
126<P>
127
128<!-- ======== CONSTRUCTOR SUMMARY ======== -->
129
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134<B>Constructor Summary</B></FONT></TH>
135</TR>
136<TR BGCOLOR="white" CLASS="TableRowColor">
137<TD><CODE><B><A HREF="../../../../org/apache/hadoop/examples/DBCountPageView.html#DBCountPageView()">DBCountPageView</A></B>()</CODE>
138
139<BR>
140&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
141</TR>
142</TABLE>
143&nbsp;
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154<CODE>static&nbsp;void</CODE></FONT></TD>
155<TD><CODE><B><A HREF="../../../../org/apache/hadoop/examples/DBCountPageView.html#main(java.lang.String[])">main</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>[]&nbsp;args)</CODE>
156
157<BR>
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162<CODE>&nbsp;int</CODE></FONT></TD>
163<TD><CODE><B><A HREF="../../../../org/apache/hadoop/examples/DBCountPageView.html#run(java.lang.String[])">run</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>[]&nbsp;args)</CODE>
164
165<BR>
166&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Execute the command with the given arguments.</TD>
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173</TR>
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175<TD><CODE><A HREF="../../../../org/apache/hadoop/conf/Configured.html#getConf()">getConf</A>, <A HREF="../../../../org/apache/hadoop/conf/Configured.html#setConf(org.apache.hadoop.conf.Configuration)">setConf</A></CODE></TD>
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191</TR>
192<TR BGCOLOR="white" CLASS="TableRowColor">
193<TD><CODE><A HREF="../../../../org/apache/hadoop/conf/Configurable.html#getConf()">getConf</A>, <A HREF="../../../../org/apache/hadoop/conf/Configurable.html#setConf(org.apache.hadoop.conf.Configuration)">setConf</A></CODE></TD>
194</TR>
195</TABLE>
196&nbsp;
197<P>
198
199<!-- ========= CONSTRUCTOR DETAIL ======== -->
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204<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
205<B>Constructor Detail</B></FONT></TH>
206</TR>
207</TABLE>
208
209<A NAME="DBCountPageView()"><!-- --></A><H3>
210DBCountPageView</H3>
211<PRE>
212public <B>DBCountPageView</B>()</PRE>
213<DL>
214</DL>
215
216<!-- ============ METHOD DETAIL ========== -->
217
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225
226<A NAME="run(java.lang.String[])"><!-- --></A><H3>
227run</H3>
228<PRE>
229public int <B>run</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>[]&nbsp;args)
230        throws <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</A></PRE>
231<DL>
232<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/apache/hadoop/util/Tool.html#run(java.lang.String[])">Tool</A></CODE></B></DD>
233<DD>Execute the command with the given arguments.
234<P>
235<DD><DL>
236<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/util/Tool.html#run(java.lang.String[])">run</A></CODE> in interface <CODE><A HREF="../../../../org/apache/hadoop/util/Tool.html" title="interface in org.apache.hadoop.util">Tool</A></CODE></DL>
237</DD>
238<DD><DL>
239<DT><B>Parameters:</B><DD><CODE>args</CODE> - command specific arguments.
240<DT><B>Returns:</B><DD>exit code.
241<DT><B>Throws:</B>
242<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</A></CODE></DL>
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248main</H3>
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250public static void <B>main</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>[]&nbsp;args)
251                 throws <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</A></PRE>
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