org.apache.oozie.util

Class MultiFileReader

java.lang.Object

java.io.Reader

org.apache.oozie.util.MultiFileReader

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, java.lang.Readable

public class MultiFileReader
extends java.io.Reader

Implementation of a Reader which can be used to read in multiple files sequentially. That is, when the first file ends it will silently move to the next file and so on. If the file has a ".gz" extension, this Reader will properly handle it; all other types of files will simply be read using a FileReader.

Field Summary

Fields inherited from class java.io.Reader

lock

Constructor Summary

Constructors

Constructor and Description
MultiFileReader(java.util.ArrayList<java.io.File> files) Constructs the MultiFileReader with the given files.

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
int	read(char[] cbuf, int off, int len)

Methods inherited from class java.io.Reader

mark, markSupported, read, read, read, ready, reset, skip

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MultiFileReader

public MultiFileReader(java.util.ArrayList<java.io.File> files)
                throws java.io.IOException

Constructs the MultiFileReader with the given files. The files will be read in the order given in the ArrayList.

Parameters:

files - The files to read

Throws:

java.io.IOException - If there was a problem opening the first file

Method Detail

read

public int read(char[] cbuf,
       int off,
       int len)
         throws java.io.IOException

Specified by:

read in class java.io.Reader

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in class java.io.Reader

Throws:

java.io.IOException