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7StreamXmlRecordReader (Hadoop 0.20.1 API)
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79  SUMMARY:&nbsp;NESTED&nbsp;|&nbsp;<A HREF="#fields_inherited_from_class_org.apache.hadoop.streaming.StreamBaseRecordReader">FIELD</A>&nbsp;|&nbsp;<A HREF="#constructor_summary">CONSTR</A>&nbsp;|&nbsp;<A HREF="#method_summary">METHOD</A></FONT></TD>
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91org.apache.hadoop.streaming</FONT>
92<BR>
93Class StreamXmlRecordReader</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/streaming/StreamBaseRecordReader.html" title="class in org.apache.hadoop.streaming">org.apache.hadoop.streaming.StreamBaseRecordReader</A>
97      <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.hadoop.streaming.StreamXmlRecordReader</B>
98</PRE>
99<DL>
100<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</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;</DD>
101</DL>
102<HR>
103<DL>
104<DT><PRE>public class <B>StreamXmlRecordReader</B><DT>extends <A HREF="../../../../org/apache/hadoop/streaming/StreamBaseRecordReader.html" title="class in org.apache.hadoop.streaming">StreamBaseRecordReader</A></DL>
105</PRE>
106
107<P>
108A way to interpret XML fragments as Mapper input records.
109  Values are XML subtrees delimited by configurable tags.
110  Keys could be the value of a certain attribute in the XML subtree,
111  but this is left to the stream processor application.
112
113  The name-value properties that StreamXmlRecordReader understands are:
114    String begin (chars marking beginning of record)
115    String end   (chars marking end of record)
116    int maxrec   (maximum record size)
117    int lookahead(maximum lookahead to sync CDATA)
118    boolean slowmatch
119<P>
120
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122<HR>
123
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125<!-- =========== FIELD SUMMARY =========== -->
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131<B>Field Summary</B></FONT></TH>
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133</TABLE>
134&nbsp;<A NAME="fields_inherited_from_class_org.apache.hadoop.streaming.StreamBaseRecordReader"><!-- --></A>
135<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
136<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
137<TH ALIGN="left"><B>Fields inherited from class org.apache.hadoop.streaming.<A HREF="../../../../org/apache/hadoop/streaming/StreamBaseRecordReader.html" title="class in org.apache.hadoop.streaming">StreamBaseRecordReader</A></B></TH>
138</TR>
139<TR BGCOLOR="white" CLASS="TableRowColor">
140<TD><CODE><A HREF="../../../../org/apache/hadoop/streaming/StreamBaseRecordReader.html#LOG">LOG</A></CODE></TD>
141</TR>
142</TABLE>
143&nbsp;
144<!-- ======== CONSTRUCTOR SUMMARY ======== -->
145
146<A NAME="constructor_summary"><!-- --></A>
147<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
148<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
149<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
150<B>Constructor Summary</B></FONT></TH>
151</TR>
152<TR BGCOLOR="white" CLASS="TableRowColor">
153<TD><CODE><B><A HREF="../../../../org/apache/hadoop/streaming/StreamXmlRecordReader.html#StreamXmlRecordReader(org.apache.hadoop.fs.FSDataInputStream, org.apache.hadoop.mapred.FileSplit, org.apache.hadoop.mapred.Reporter, org.apache.hadoop.mapred.JobConf, org.apache.hadoop.fs.FileSystem)">StreamXmlRecordReader</A></B>(<A HREF="../../../../org/apache/hadoop/fs/FSDataInputStream.html" title="class in org.apache.hadoop.fs">FSDataInputStream</A>&nbsp;in,
154                      <A HREF="../../../../org/apache/hadoop/mapred/FileSplit.html" title="class in org.apache.hadoop.mapred">FileSplit</A>&nbsp;split,
155                      <A HREF="../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</A>&nbsp;reporter,
156                      <A HREF="../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</A>&nbsp;job,
157                      <A HREF="../../../../org/apache/hadoop/fs/FileSystem.html" title="class in org.apache.hadoop.fs">FileSystem</A>&nbsp;fs)</CODE>
158
159<BR>
160&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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162</TABLE>
163&nbsp;
164<!-- ========== METHOD SUMMARY =========== -->
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170<B>Method Summary</B></FONT></TH>
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172<TR BGCOLOR="white" CLASS="TableRowColor">
173<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
174<CODE>&nbsp;void</CODE></FONT></TD>
175<TD><CODE><B><A HREF="../../../../org/apache/hadoop/streaming/StreamXmlRecordReader.html#init()">init</A></B>()</CODE>
176
177<BR>
178&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
179</TR>
180<TR BGCOLOR="white" CLASS="TableRowColor">
181<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
182<CODE>&nbsp;boolean</CODE></FONT></TD>
183<TD><CODE><B><A HREF="../../../../org/apache/hadoop/streaming/StreamXmlRecordReader.html#next(org.apache.hadoop.io.Text, org.apache.hadoop.io.Text)">next</A></B>(<A HREF="../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>&nbsp;key,
184     <A HREF="../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>&nbsp;value)</CODE>
185
186<BR>
187&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Read a record.</TD>
188</TR>
189<TR BGCOLOR="white" CLASS="TableRowColor">
190<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
191<CODE>&nbsp;void</CODE></FONT></TD>
192<TD><CODE><B><A HREF="../../../../org/apache/hadoop/streaming/StreamXmlRecordReader.html#seekNextRecordBoundary()">seekNextRecordBoundary</A></B>()</CODE>
193
194<BR>
195&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Implementation should seek forward in_ to the first byte of the next record.</TD>
196</TR>
197</TABLE>
198&nbsp;<A NAME="methods_inherited_from_class_org.apache.hadoop.streaming.StreamBaseRecordReader"><!-- --></A>
199<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
200<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
201<TH ALIGN="left"><B>Methods inherited from class org.apache.hadoop.streaming.<A HREF="../../../../org/apache/hadoop/streaming/StreamBaseRecordReader.html" title="class in org.apache.hadoop.streaming">StreamBaseRecordReader</A></B></TH>
202</TR>
203<TR BGCOLOR="white" CLASS="TableRowColor">
204<TD><CODE><A HREF="../../../../org/apache/hadoop/streaming/StreamBaseRecordReader.html#close()">close</A>, <A HREF="../../../../org/apache/hadoop/streaming/StreamBaseRecordReader.html#createKey()">createKey</A>, <A HREF="../../../../org/apache/hadoop/streaming/StreamBaseRecordReader.html#createValue()">createValue</A>, <A HREF="../../../../org/apache/hadoop/streaming/StreamBaseRecordReader.html#getPos()">getPos</A>, <A HREF="../../../../org/apache/hadoop/streaming/StreamBaseRecordReader.html#getProgress()">getProgress</A></CODE></TD>
205</TR>
206</TABLE>
207&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
208<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
209<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
210<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>
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214</TR>
215</TABLE>
216&nbsp;
217<P>
218
219<!-- ========= CONSTRUCTOR DETAIL ======== -->
220
221<A NAME="constructor_detail"><!-- --></A>
222<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
223<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
224<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
225<B>Constructor Detail</B></FONT></TH>
226</TR>
227</TABLE>
228
229<A NAME="StreamXmlRecordReader(org.apache.hadoop.fs.FSDataInputStream, org.apache.hadoop.mapred.FileSplit, org.apache.hadoop.mapred.Reporter, org.apache.hadoop.mapred.JobConf, org.apache.hadoop.fs.FileSystem)"><!-- --></A><H3>
230StreamXmlRecordReader</H3>
231<PRE>
232public <B>StreamXmlRecordReader</B>(<A HREF="../../../../org/apache/hadoop/fs/FSDataInputStream.html" title="class in org.apache.hadoop.fs">FSDataInputStream</A>&nbsp;in,
233                             <A HREF="../../../../org/apache/hadoop/mapred/FileSplit.html" title="class in org.apache.hadoop.mapred">FileSplit</A>&nbsp;split,
234                             <A HREF="../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</A>&nbsp;reporter,
235                             <A HREF="../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</A>&nbsp;job,
236                             <A HREF="../../../../org/apache/hadoop/fs/FileSystem.html" title="class in org.apache.hadoop.fs">FileSystem</A>&nbsp;fs)
237                      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>
238<DL>
239<DL>
240
241<DT><B>Throws:</B>
242<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>
243</DL>
244
245<!-- ============ METHOD DETAIL ========== -->
246
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249<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
250<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
251<B>Method Detail</B></FONT></TH>
252</TR>
253</TABLE>
254
255<A NAME="init()"><!-- --></A><H3>
256init</H3>
257<PRE>
258public void <B>init</B>()
259          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>
260<DL>
261<DD><DL>
262
263<DT><B>Throws:</B>
264<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>
265</DD>
266</DL>
267<HR>
268
269<A NAME="next(org.apache.hadoop.io.Text, org.apache.hadoop.io.Text)"><!-- --></A><H3>
270next</H3>
271<PRE>
272public boolean <B>next</B>(<A HREF="../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>&nbsp;key,
273                    <A HREF="../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</A>&nbsp;value)
274             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>
275<DL>
276<DD><B>Description copied from class: <CODE><A HREF="../../../../org/apache/hadoop/streaming/StreamBaseRecordReader.html#next(org.apache.hadoop.io.Text, org.apache.hadoop.io.Text)">StreamBaseRecordReader</A></CODE></B></DD>
277<DD>Read a record. Implementation should call numRecStats at the end
278<P>
279<DD><DL>
280<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/mapred/RecordReader.html#next(K, V)">next</A></CODE> in interface <CODE><A HREF="../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</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><DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/streaming/StreamBaseRecordReader.html#next(org.apache.hadoop.io.Text, org.apache.hadoop.io.Text)">next</A></CODE> in class <CODE><A HREF="../../../../org/apache/hadoop/streaming/StreamBaseRecordReader.html" title="class in org.apache.hadoop.streaming">StreamBaseRecordReader</A></CODE></DL>
281</DD>
282<DD><DL>
283<DT><B>Parameters:</B><DD><CODE>key</CODE> - the key to read data into<DD><CODE>value</CODE> - the value to read data into
284<DT><B>Returns:</B><DD>true iff a key/value was read, false if at EOF
285<DT><B>Throws:</B>
286<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>
287</DD>
288</DL>
289<HR>
290
291<A NAME="seekNextRecordBoundary()"><!-- --></A><H3>
292seekNextRecordBoundary</H3>
293<PRE>
294public void <B>seekNextRecordBoundary</B>()
295                            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>
296<DL>
297<DD><B>Description copied from class: <CODE><A HREF="../../../../org/apache/hadoop/streaming/StreamBaseRecordReader.html#seekNextRecordBoundary()">StreamBaseRecordReader</A></CODE></B></DD>
298<DD>Implementation should seek forward in_ to the first byte of the next record.
299  The initial byte offset in the stream is arbitrary.
300<P>
301<DD><DL>
302<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/streaming/StreamBaseRecordReader.html#seekNextRecordBoundary()">seekNextRecordBoundary</A></CODE> in class <CODE><A HREF="../../../../org/apache/hadoop/streaming/StreamBaseRecordReader.html" title="class in org.apache.hadoop.streaming">StreamBaseRecordReader</A></CODE></DL>
303</DD>
304<DD><DL>
305
306<DT><B>Throws:</B>
307<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>
308</DD>
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