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

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7Seekable (Hadoop 0.20.1 API)
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91org.apache.hadoop.fs</FONT>
92<BR>
93Interface Seekable</H2>
94<DL>
95<DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../../org/apache/hadoop/fs/BufferedFSInputStream.html" title="class in org.apache.hadoop.fs">BufferedFSInputStream</A>, <A HREF="../../../../org/apache/hadoop/fs/FSDataInputStream.html" title="class in org.apache.hadoop.fs">FSDataInputStream</A>, <A HREF="../../../../org/apache/hadoop/fs/FSInputChecker.html" title="class in org.apache.hadoop.fs">FSInputChecker</A>, <A HREF="../../../../org/apache/hadoop/fs/FSInputStream.html" title="class in org.apache.hadoop.fs">FSInputStream</A>, <A HREF="../../../../org/apache/hadoop/fs/ftp/FTPInputStream.html" title="class in org.apache.hadoop.fs.ftp">FTPInputStream</A></DD>
96</DL>
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98<DL>
99<DT><PRE>public interface <B>Seekable</B></DL>
100</PRE>
101
102<P>
103Stream that permits seeking.
104<P>
105
106<P>
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108
109<P>
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121<CODE>&nbsp;long</CODE></FONT></TD>
122<TD><CODE><B><A HREF="../../../../org/apache/hadoop/fs/Seekable.html#getPos()">getPos</A></B>()</CODE>
123
124<BR>
125&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Return the current offset from the start of the file</TD>
126</TR>
127<TR BGCOLOR="white" CLASS="TableRowColor">
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129<CODE>&nbsp;void</CODE></FONT></TD>
130<TD><CODE><B><A HREF="../../../../org/apache/hadoop/fs/Seekable.html#seek(long)">seek</A></B>(long&nbsp;pos)</CODE>
131
132<BR>
133&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Seek to the given offset from the start of the file.</TD>
134</TR>
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136<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
137<CODE>&nbsp;boolean</CODE></FONT></TD>
138<TD><CODE><B><A HREF="../../../../org/apache/hadoop/fs/Seekable.html#seekToNewSource(long)">seekToNewSource</A></B>(long&nbsp;targetPos)</CODE>
139
140<BR>
141&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Seeks a different copy of the data.</TD>
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156
157<A NAME="seek(long)"><!-- --></A><H3>
158seek</H3>
159<PRE>
160void <B>seek</B>(long&nbsp;pos)
161          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>
162<DL>
163<DD>Seek to the given offset from the start of the file.
164 The next read() will be from that location.  Can't
165 seek past the end of the file.
166<P>
167<DD><DL>
168
169<DT><B>Throws:</B>
170<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>
171</DD>
172</DL>
173<HR>
174
175<A NAME="getPos()"><!-- --></A><H3>
176getPos</H3>
177<PRE>
178long <B>getPos</B>()
179            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>
180<DL>
181<DD>Return the current offset from the start of the file
182<P>
183<DD><DL>
184
185<DT><B>Throws:</B>
186<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>
187</DD>
188</DL>
189<HR>
190
191<A NAME="seekToNewSource(long)"><!-- --></A><H3>
192seekToNewSource</H3>
193<PRE>
194boolean <B>seekToNewSource</B>(long&nbsp;targetPos)
195                        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>
196<DL>
197<DD>Seeks a different copy of the data.  Returns true if
198 found a new source, false otherwise.
199<P>
200<DD><DL>
201
202<DT><B>Throws:</B>
203<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>
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