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## org.apache.hadoop.examples
Class DBCountPageView

    java.lang.Object
      org.apache.hadoop.conf.Configured
          org.apache.hadoop.examples.DBCountPageView

All Implemented Interfaces:
  Configurable, Tool

    public class DBCountPageView

extends Configured
implements Tool

This is a demonstrative program, which uses DBInputFormat for reading the input data from a database, and DBOutputFormat for writing the data to the database.
The Program first creates the necessary tables, populates the input table and runs the mapred job.
The input data is a mini access log, with a `<url,referrer,time>` schema.The output is the number of pageviews of each url in the log, having the schema `<url,pageview>`. When called with no arguments the program starts a local HSQLDB server, and uses this database for storing/retrieving the data.

Constructor Summary
`DBCountPageView()`

Method Summary
`static void` | `main(String[] args)`
`int` | `run(String[] args)` Execute the command with the given arguments.

Methods inherited from class org.apache.hadoop.conf.Configured
`getConf, setConf`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Methods inherited from interface org.apache.hadoop.conf.Configurable
`getConf, setConf`

Constructor Detail

### DBCountPageView

    public DBCountPageView()

Method Detail

### run

    public int run(String[] args)
            throws Exception

  Description copied from interface: `Tool`
  Execute the command with the given arguments.

  Specified by:
    `run` in interface `Tool`
  Parameters:
    `args` - command specific arguments.
  Returns:
    exit code.
  Throws:
    `Exception`

### main

    public static void main(String[] args)
                     throws Exception

  Throws:
    `Exception`

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Copyright © 2009 The Apache Software Foundation