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7Node (Hadoop 0.20.1 API)
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91org.apache.hadoop.net</FONT>
92<BR>
93Interface Node</H2>
94<DL>
95<DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../../org/apache/hadoop/net/NodeBase.html" title="class in org.apache.hadoop.net">NodeBase</A></DD>
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98<DL>
99<DT><PRE>public interface <B>Node</B></DL>
100</PRE>
101
102<P>
103The interface defines a node in a network topology.
104 A node may be a leave representing a data node or an inner
105 node representing a datacenter or rack.
106 Each data has a name and its location in the network is
107 decided by a string with syntax similar to a file name.
108 For example, a data node's name is hostname:port# and if it's located at
109 rack "orange" in datacenter "dog", the string representation of its
110 network location is /dog/orange
111<P>
112
113<P>
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128<CODE>&nbsp;int</CODE></FONT></TD>
129<TD><CODE><B><A HREF="../../../../org/apache/hadoop/net/Node.html#getLevel()">getLevel</A></B>()</CODE>
130
131<BR>
132&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Return this node's level in the tree.</TD>
133</TR>
134<TR BGCOLOR="white" CLASS="TableRowColor">
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136<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>
137<TD><CODE><B><A HREF="../../../../org/apache/hadoop/net/Node.html#getName()">getName</A></B>()</CODE>
138
139<BR>
140&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Return this node's name</TD>
141</TR>
142<TR BGCOLOR="white" CLASS="TableRowColor">
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144<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>
145<TD><CODE><B><A HREF="../../../../org/apache/hadoop/net/Node.html#getNetworkLocation()">getNetworkLocation</A></B>()</CODE>
146
147<BR>
148&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Return the string representation of this node's network location</TD>
149</TR>
150<TR BGCOLOR="white" CLASS="TableRowColor">
151<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
152<CODE>&nbsp;<A HREF="../../../../org/apache/hadoop/net/Node.html" title="interface in org.apache.hadoop.net">Node</A></CODE></FONT></TD>
153<TD><CODE><B><A HREF="../../../../org/apache/hadoop/net/Node.html#getParent()">getParent</A></B>()</CODE>
154
155<BR>
156&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Return this node's parent</TD>
157</TR>
158<TR BGCOLOR="white" CLASS="TableRowColor">
159<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
160<CODE>&nbsp;void</CODE></FONT></TD>
161<TD><CODE><B><A HREF="../../../../org/apache/hadoop/net/Node.html#setLevel(int)">setLevel</A></B>(int&nbsp;i)</CODE>
162
163<BR>
164&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set this node's level in the tree.</TD>
165</TR>
166<TR BGCOLOR="white" CLASS="TableRowColor">
167<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
168<CODE>&nbsp;void</CODE></FONT></TD>
169<TD><CODE><B><A HREF="../../../../org/apache/hadoop/net/Node.html#setNetworkLocation(java.lang.String)">setNetworkLocation</A></B>(<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>&nbsp;location)</CODE>
170
171<BR>
172&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the node's network location</TD>
173</TR>
174<TR BGCOLOR="white" CLASS="TableRowColor">
175<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
176<CODE>&nbsp;void</CODE></FONT></TD>
177<TD><CODE><B><A HREF="../../../../org/apache/hadoop/net/Node.html#setParent(org.apache.hadoop.net.Node)">setParent</A></B>(<A HREF="../../../../org/apache/hadoop/net/Node.html" title="interface in org.apache.hadoop.net">Node</A>&nbsp;parent)</CODE>
178
179<BR>
180&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set this node's parent</TD>
181</TR>
182</TABLE>
183&nbsp;
184<P>
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192<B>Method Detail</B></FONT></TH>
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194</TABLE>
195
196<A NAME="getNetworkLocation()"><!-- --></A><H3>
197getNetworkLocation</H3>
198<PRE>
199<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>getNetworkLocation</B>()</PRE>
200<DL>
201<DD>Return the string representation of this node's network location
202<P>
203<DD><DL>
204</DL>
205</DD>
206</DL>
207<HR>
208
209<A NAME="setNetworkLocation(java.lang.String)"><!-- --></A><H3>
210setNetworkLocation</H3>
211<PRE>
212void <B>setNetworkLocation</B>(<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>&nbsp;location)</PRE>
213<DL>
214<DD>Set the node's network location
215<P>
216<DD><DL>
217</DL>
218</DD>
219</DL>
220<HR>
221
222<A NAME="getName()"><!-- --></A><H3>
223getName</H3>
224<PRE>
225<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>getName</B>()</PRE>
226<DL>
227<DD>Return this node's name
228<P>
229<DD><DL>
230</DL>
231</DD>
232</DL>
233<HR>
234
235<A NAME="getParent()"><!-- --></A><H3>
236getParent</H3>
237<PRE>
238<A HREF="../../../../org/apache/hadoop/net/Node.html" title="interface in org.apache.hadoop.net">Node</A> <B>getParent</B>()</PRE>
239<DL>
240<DD>Return this node's parent
241<P>
242<DD><DL>
243</DL>
244</DD>
245</DL>
246<HR>
247
248<A NAME="setParent(org.apache.hadoop.net.Node)"><!-- --></A><H3>
249setParent</H3>
250<PRE>
251void <B>setParent</B>(<A HREF="../../../../org/apache/hadoop/net/Node.html" title="interface in org.apache.hadoop.net">Node</A>&nbsp;parent)</PRE>
252<DL>
253<DD>Set this node's parent
254<P>
255<DD><DL>
256</DL>
257</DD>
258</DL>
259<HR>
260
261<A NAME="getLevel()"><!-- --></A><H3>
262getLevel</H3>
263<PRE>
264int <B>getLevel</B>()</PRE>
265<DL>
266<DD>Return this node's level in the tree.
267 E.g. the root of a tree returns 0 and its children return 1
268<P>
269<DD><DL>
270</DL>
271</DD>
272</DL>
273<HR>
274
275<A NAME="setLevel(int)"><!-- --></A><H3>
276setLevel</H3>
277<PRE>
278void <B>setLevel</B>(int&nbsp;i)</PRE>
279<DL>
280<DD>Set this node's level in the tree.
281<P>
282<DD><DL>
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