source: proiecte/HadoopJUnit/hadoop-0.20.1/docs/api/org/apache/hadoop/contrib/utils/join/ResetableIterator.html @ 120

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7ResetableIterator (Hadoop 0.20.1 API)
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91org.apache.hadoop.contrib.utils.join</FONT>
92<BR>
93Interface ResetableIterator</H2>
94<DL>
95<DT><B>All Superinterfaces:</B> <DD><A HREF="http://java.sun.com/javase/6/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</A></DD>
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98<DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../../../../org/apache/hadoop/contrib/utils/join/ArrayListBackedIterator.html" title="class in org.apache.hadoop.contrib.utils.join">ArrayListBackedIterator</A></DD>
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102<DT><PRE>public interface <B>ResetableIterator</B><DT>extends <A HREF="http://java.sun.com/javase/6/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</A></DL>
103</PRE>
104
105<P>
106This defines an iterator interface that will help the reducer class
107 re-group its input by source tags. Once the values are re-grouped,
108 the reducer will receive the cross product of values from different groups.
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110
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126<CODE>&nbsp;void</CODE></FONT></TD>
127<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/contrib/utils/join/ResetableIterator.html#add(java.lang.Object)">add</A></B>(<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>&nbsp;item)</CODE>
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134<CODE>&nbsp;void</CODE></FONT></TD>
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136
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142<CODE>&nbsp;void</CODE></FONT></TD>
143<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/contrib/utils/join/ResetableIterator.html#reset()">reset</A></B>()</CODE>
144
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153</TR>
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172reset</H3>
173<PRE>
174void <B>reset</B>()</PRE>
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186add</H3>
187<PRE>
188void <B>add</B>(<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>&nbsp;item)</PRE>
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200close</H3>
201<PRE>
202void <B>close</B>()
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205<DD><DL>
206</DL>
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208<DD><DL>
209
210<DT><B>Throws:</B>
211<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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