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1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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5<!-- Generated by javadoc (build 1.6.0_07) on Tue Sep 01 20:56:53 UTC 2009 -->
6<TITLE>
7SequenceFile.Metadata (Hadoop 0.20.1 API)
8</TITLE>
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10<META NAME="date" CONTENT="2009-09-01">
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58&nbsp;<A HREF="../../../../org/apache/hadoop/io/SequenceFile.CompressionType.html" title="enum in org.apache.hadoop.io"><B>PREV CLASS</B></A>&nbsp;
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79  SUMMARY:&nbsp;NESTED&nbsp;|&nbsp;FIELD&nbsp;|&nbsp;<A HREF="#constructor_summary">CONSTR</A>&nbsp;|&nbsp;<A HREF="#method_summary">METHOD</A></FONT></TD>
80<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">
81DETAIL:&nbsp;FIELD&nbsp;|&nbsp;<A HREF="#constructor_detail">CONSTR</A>&nbsp;|&nbsp;<A HREF="#method_detail">METHOD</A></FONT></TD>
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87<HR>
88<!-- ======== START OF CLASS DATA ======== -->
89<H2>
90<FONT SIZE="-1">
91org.apache.hadoop.io</FONT>
92<BR>
93Class SequenceFile.Metadata</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 "><B>org.apache.hadoop.io.SequenceFile.Metadata</B>
97</PRE>
98<DL>
99<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</A></DD>
100</DL>
101<DL>
102<DT><B>Enclosing class:</B><DD><A HREF="../../../../org/apache/hadoop/io/SequenceFile.html" title="class in org.apache.hadoop.io">SequenceFile</A></DD>
103</DL>
104<HR>
105<DL>
106<DT><PRE>public static class <B>SequenceFile.Metadata</B><DT>extends <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><DT>implements <A HREF="../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</A></DL>
107</PRE>
108
109<P>
110The class encapsulating with the metadata of a file.
111 The metadata of a file is a list of attribute name/value
112 pairs of Text type.
113<P>
114
115<P>
116<HR>
117
118<P>
119
120<!-- ======== CONSTRUCTOR SUMMARY ======== -->
121
122<A NAME="constructor_summary"><!-- --></A>
123<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
124<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
125<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
126<B>Constructor Summary</B></FONT></TH>
127</TR>
128<TR BGCOLOR="white" CLASS="TableRowColor">
129<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Metadata.html#SequenceFile.Metadata()">SequenceFile.Metadata</A></B>()</CODE>
130
131<BR>
132&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
133</TR>
134<TR BGCOLOR="white" CLASS="TableRowColor">
135<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Metadata.html#SequenceFile.Metadata(java.util.TreeMap)">SequenceFile.Metadata</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/util/TreeMap.html?is-external=true" title="class or interface in java.util">TreeMap</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;&nbsp;arg)</CODE>
136
137<BR>
138&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
139</TR>
140</TABLE>
141&nbsp;
142<!-- ========== METHOD SUMMARY =========== -->
143
144<A NAME="method_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>Method Summary</B></FONT></TH>
149</TR>
150<TR BGCOLOR="white" CLASS="TableRowColor">
151<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
152<CODE>&nbsp;boolean</CODE></FONT></TD>
153<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Metadata.html#equals(org.apache.hadoop.io.SequenceFile.Metadata)">equals</A></B>(<A HREF="../../../../org/apache/hadoop/io/SequenceFile.Metadata.html" title="class in org.apache.hadoop.io">SequenceFile.Metadata</A>&nbsp;other)</CODE>
154
155<BR>
156&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
157</TR>
158<TR BGCOLOR="white" CLASS="TableRowColor">
159<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
160<CODE>&nbsp;<A HREF="../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A></CODE></FONT></TD>
161<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Metadata.html#get(org.apache.hadoop.io.Text)">get</A></B>(<A HREF="../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>&nbsp;name)</CODE>
162
163<BR>
164&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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/TreeMap.html?is-external=true" title="class or interface in java.util">TreeMap</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;</CODE></FONT></TD>
169<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Metadata.html#getMetadata()">getMetadata</A></B>()</CODE>
170
171<BR>
172&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
173</TR>
174<TR BGCOLOR="white" CLASS="TableRowColor">
175<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
176<CODE>&nbsp;int</CODE></FONT></TD>
177<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Metadata.html#hashCode()">hashCode</A></B>()</CODE>
178
179<BR>
180&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
181</TR>
182<TR BGCOLOR="white" CLASS="TableRowColor">
183<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
184<CODE>&nbsp;void</CODE></FONT></TD>
185<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Metadata.html#readFields(java.io.DataInput)">readFields</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInput.html?is-external=true" title="class or interface in java.io">DataInput</A>&nbsp;in)</CODE>
186
187<BR>
188&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deserialize the fields of this object from <code>in</code>.</TD>
189</TR>
190<TR BGCOLOR="white" CLASS="TableRowColor">
191<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
192<CODE>&nbsp;void</CODE></FONT></TD>
193<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Metadata.html#set(org.apache.hadoop.io.Text, org.apache.hadoop.io.Text)">set</A></B>(<A HREF="../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>&nbsp;name,
194    <A HREF="../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>&nbsp;value)</CODE>
195
196<BR>
197&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
198</TR>
199<TR BGCOLOR="white" CLASS="TableRowColor">
200<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
201<CODE>&nbsp;<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></CODE></FONT></TD>
202<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Metadata.html#toString()">toString</A></B>()</CODE>
203
204<BR>
205&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
206</TR>
207<TR BGCOLOR="white" CLASS="TableRowColor">
208<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
209<CODE>&nbsp;void</CODE></FONT></TD>
210<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Metadata.html#write(java.io.DataOutput)">write</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataOutput.html?is-external=true" title="class or interface in java.io">DataOutput</A>&nbsp;out)</CODE>
211
212<BR>
213&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Serialize the fields of this object to <code>out</code>.</TD>
214</TR>
215</TABLE>
216&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
217<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
218<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
219<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>
220</TR>
221<TR BGCOLOR="white" CLASS="TableRowColor">
222<TD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
223</TR>
224</TABLE>
225&nbsp;
226<P>
227
228<!-- ========= CONSTRUCTOR DETAIL ======== -->
229
230<A NAME="constructor_detail"><!-- --></A>
231<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
232<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
233<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
234<B>Constructor Detail</B></FONT></TH>
235</TR>
236</TABLE>
237
238<A NAME="SequenceFile.Metadata()"><!-- --></A><H3>
239SequenceFile.Metadata</H3>
240<PRE>
241public <B>SequenceFile.Metadata</B>()</PRE>
242<DL>
243</DL>
244<HR>
245
246<A NAME="SequenceFile.Metadata(java.util.TreeMap)"><!-- --></A><H3>
247SequenceFile.Metadata</H3>
248<PRE>
249public <B>SequenceFile.Metadata</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/util/TreeMap.html?is-external=true" title="class or interface in java.util">TreeMap</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;&nbsp;arg)</PRE>
250<DL>
251</DL>
252
253<!-- ============ METHOD DETAIL ========== -->
254
255<A NAME="method_detail"><!-- --></A>
256<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
257<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
258<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
259<B>Method Detail</B></FONT></TH>
260</TR>
261</TABLE>
262
263<A NAME="get(org.apache.hadoop.io.Text)"><!-- --></A><H3>
264get</H3>
265<PRE>
266public <A HREF="../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A> <B>get</B>(<A HREF="../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>&nbsp;name)</PRE>
267<DL>
268<DD><DL>
269</DL>
270</DD>
271<DD><DL>
272</DL>
273</DD>
274</DL>
275<HR>
276
277<A NAME="set(org.apache.hadoop.io.Text, org.apache.hadoop.io.Text)"><!-- --></A><H3>
278set</H3>
279<PRE>
280public void <B>set</B>(<A HREF="../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>&nbsp;name,
281                <A HREF="../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>&nbsp;value)</PRE>
282<DL>
283<DD><DL>
284</DL>
285</DD>
286<DD><DL>
287</DL>
288</DD>
289</DL>
290<HR>
291
292<A NAME="getMetadata()"><!-- --></A><H3>
293getMetadata</H3>
294<PRE>
295public <A HREF="http://java.sun.com/javase/6/docs/api/java/util/TreeMap.html?is-external=true" title="class or interface in java.util">TreeMap</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; <B>getMetadata</B>()</PRE>
296<DL>
297<DD><DL>
298</DL>
299</DD>
300<DD><DL>
301</DL>
302</DD>
303</DL>
304<HR>
305
306<A NAME="write(java.io.DataOutput)"><!-- --></A><H3>
307write</H3>
308<PRE>
309public void <B>write</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataOutput.html?is-external=true" title="class or interface in java.io">DataOutput</A>&nbsp;out)
310           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>
311<DL>
312<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/apache/hadoop/io/Writable.html#write(java.io.DataOutput)">Writable</A></CODE></B></DD>
313<DD>Serialize the fields of this object to <code>out</code>.
314<P>
315<DD><DL>
316<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/io/Writable.html#write(java.io.DataOutput)">write</A></CODE> in interface <CODE><A HREF="../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</A></CODE></DL>
317</DD>
318<DD><DL>
319<DT><B>Parameters:</B><DD><CODE>out</CODE> - <code>DataOuput</code> to serialize this object into.
320<DT><B>Throws:</B>
321<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>
322</DD>
323</DL>
324<HR>
325
326<A NAME="readFields(java.io.DataInput)"><!-- --></A><H3>
327readFields</H3>
328<PRE>
329public void <B>readFields</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInput.html?is-external=true" title="class or interface in java.io">DataInput</A>&nbsp;in)
330                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>
331<DL>
332<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/apache/hadoop/io/Writable.html#readFields(java.io.DataInput)">Writable</A></CODE></B></DD>
333<DD>Deserialize the fields of this object from <code>in</code>. 
334 
335 <p>For efficiency, implementations should attempt to re-use storage in the
336 existing object where possible.</p>
337<P>
338<DD><DL>
339<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/io/Writable.html#readFields(java.io.DataInput)">readFields</A></CODE> in interface <CODE><A HREF="../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</A></CODE></DL>
340</DD>
341<DD><DL>
342<DT><B>Parameters:</B><DD><CODE>in</CODE> - <code>DataInput</code> to deseriablize this object from.
343<DT><B>Throws:</B>
344<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>
345</DD>
346</DL>
347<HR>
348
349<A NAME="equals(org.apache.hadoop.io.SequenceFile.Metadata)"><!-- --></A><H3>
350equals</H3>
351<PRE>
352public boolean <B>equals</B>(<A HREF="../../../../org/apache/hadoop/io/SequenceFile.Metadata.html" title="class in org.apache.hadoop.io">SequenceFile.Metadata</A>&nbsp;other)</PRE>
353<DL>
354<DD><DL>
355</DL>
356</DD>
357<DD><DL>
358</DL>
359</DD>
360</DL>
361<HR>
362
363<A NAME="hashCode()"><!-- --></A><H3>
364hashCode</H3>
365<PRE>
366public int <B>hashCode</B>()</PRE>
367<DL>
368<DD><DL>
369<DT><B>Overrides:</B><DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</A></CODE> in class <CODE><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></CODE></DL>
370</DD>
371<DD><DL>
372</DL>
373</DD>
374</DL>
375<HR>
376
377<A NAME="toString()"><!-- --></A><H3>
378toString</H3>
379<PRE>
380public <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> <B>toString</B>()</PRE>
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383<DT><B>Overrides:</B><DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</A></CODE> in class <CODE><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></CODE></DL>
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