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Node (estraier.pure)
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SUMMARY: NESTED | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD>
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estraier.pure</FONT>
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Class Node</H2>
<PRE>
java.lang.Object
<IMG SRC="../../resources/inherit.gif" ALT="extended by"><B>estraier.pure.Node</B>
</PRE>
<HR>
<DL>
<DT>public class <B>Node</B><DT>extends java.lang.Object</DL>
<P>
Abstraction of connection to P2P node.
<P>
<P>
<HR>
<P>
<!-- ======== NESTED CLASS SUMMARY ======== -->
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<B>Constructor Summary</B></FONT></TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#Node()">Node</A></B>()</CODE>
<BR>
Create a node connection object.</TD>
</TR>
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<CODE> java.util.List</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#admins()">admins</A></B>()</CODE>
<BR>
Get a list of names of administrators.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#cache_usage()">cache_usage</A></B>()</CODE>
<BR>
Get the usage ratio of the cache.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#doc_num()">doc_num</A></B>()</CODE>
<BR>
Get the number of documents.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#edit_doc(estraier.pure.Document)">edit_doc</A></B>(<A HREF="../../estraier/pure/Document.html" title="class in estraier.pure">Document</A> doc)</CODE>
<BR>
Edit attributes of a document.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> java.util.Map</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#etch_doc_by_uri(java.lang.String)">etch_doc_by_uri</A></B>(java.lang.String uri)</CODE>
<BR>
Extract keywords of a document specified by URI.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> java.util.Map</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#etch_doc(int)">etch_doc</A></B>(int id)</CODE>
<BR>
Extract keywords of a document.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#get_doc_attr_by_uri(java.lang.String, java.lang.String)">get_doc_attr_by_uri</A></B>(java.lang.String uri,
java.lang.String name)</CODE>
<BR>
Retrieve the value of an attribute of a document specified by URI</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#get_doc_attr(int, java.lang.String)">get_doc_attr</A></B>(int id,
java.lang.String name)</CODE>
<BR>
Retrieve the value of an attribute of a document.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../estraier/pure/Document.html" title="class in estraier.pure">Document</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#get_doc_by_uri(java.lang.String)">get_doc_by_uri</A></B>(java.lang.String uri)</CODE>
<BR>
Retrieve a document specified by URI.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../estraier/pure/Document.html" title="class in estraier.pure">Document</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#get_doc(int)">get_doc</A></B>(int id)</CODE>
<BR>
Retrieve a document.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#label()">label</A></B>()</CODE>
<BR>
Get the label.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> java.util.List</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#links()">links</A></B>()</CODE>
<BR>
Get a list of expressions of links.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#name()">name</A></B>()</CODE>
<BR>
Get the name.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#optimize()">optimize</A></B>()</CODE>
<BR>
Optimize the database.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#out_doc_by_uri(java.lang.String)">out_doc_by_uri</A></B>(java.lang.String uri)</CODE>
<BR>
Remove a document specified by URI.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#out_doc(int)">out_doc</A></B>(int id)</CODE>
<BR>
Remove a document.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#put_doc(estraier.pure.Document)">put_doc</A></B>(<A HREF="../../estraier/pure/Document.html" title="class in estraier.pure">Document</A> doc)</CODE>
<BR>
Add a document.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../estraier/pure/NodeResult.html" title="class in estraier.pure">NodeResult</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#search(estraier.pure.Condition, int)">search</A></B>(<A HREF="../../estraier/pure/Condition.html" title="class in estraier.pure">Condition</A> cond,
int depth)</CODE>
<BR>
Search for documents corresponding a condition.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#set_auth(java.lang.String, java.lang.String)">set_auth</A></B>(java.lang.String name,
java.lang.String password)</CODE>
<BR>
Set the authentication information.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#set_link(java.lang.String, java.lang.String, int)">set_link</A></B>(java.lang.String url,
java.lang.String label,
int credit)</CODE>
<BR>
Manage a link.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#set_proxy(java.lang.String, int)">set_proxy</A></B>(java.lang.String host,
int port)</CODE>
<BR>
Set the proxy information.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#set_snippet_width(int, int, int)">set_snippet_width</A></B>(int wwidth,
int hwidth,
int awidth)</CODE>
<BR>
Set width of snippet in the result.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#set_timeout(int)">set_timeout</A></B>(int sec)</CODE>
<BR>
Set timeout.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#set_url(java.lang.String)">set_url</A></B>(java.lang.String url)</CODE>
<BR>
Set the URL of a node server.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#set_user(java.lang.String, int)">set_user</A></B>(java.lang.String name,
int mode)</CODE>
<BR>
Manage a user account.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#size()">size</A></B>()</CODE>
<BR>
Get the size of the datbase.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#status()">status</A></B>()</CODE>
<BR>
Get the status code of the last request.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#sync()">sync</A></B>()</CODE>
<BR>
Synchronize updating contents of the database.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#uri_to_id(java.lang.String)">uri_to_id</A></B>(java.lang.String uri)</CODE>
<BR>
Get the ID of a document specified by URI.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> java.util.List</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#users()">users</A></B>()</CODE>
<BR>
Get a list of names of users.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../estraier/pure/Node.html#word_num()">word_num</A></B>()</CODE>
<BR>
Get the number of unique words.</TD>
</TR>
</TABLE>
<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from class java.lang.Object</B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
</TR>
</TABLE>
<P>
<!-- ============ FIELD DETAIL =========== -->
<!-- ========= CONSTRUCTOR DETAIL ======== -->
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<B>Constructor Detail</B></FONT></TD>
</TR>
</TABLE>
<A NAME="Node()"><!-- --></A><H3>
Node</H3>
<PRE>
public <B>Node</B>()</PRE>
<DL>
<DD>Create a node connection object.
<P>
</DL>
<!-- ============ METHOD DETAIL ========== -->
<A NAME="method_detail"><!-- --></A>
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<B>Method Detail</B></FONT></TD>
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</TABLE>
<A NAME="admins()"><!-- --></A><H3>
admins</H3>
<PRE>
public java.util.List <B>admins</B>()</PRE>
<DL>
<DD>Get a list of names of administrators.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>a list object of names of administrators. On error, `null' is returned.</DL>
</DD>
</DL>
<HR>
<A NAME="cache_usage()"><!-- --></A><H3>
cache_usage</H3>
<PRE>
public double <B>cache_usage</B>()</PRE>
<DL>
<DD>Get the usage ratio of the cache.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>the usage ratio of the cache. On error, -1.0 is returned.</DL>
</DD>
</DL>
<HR>
<A NAME="doc_num()"><!-- --></A><H3>
doc_num</H3>
<PRE>
public int <B>doc_num</B>()</PRE>
<DL>
<DD>Get the number of documents.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>the number of documents. On error, -1 is returned.</DL>
</DD>
</DL>
<HR>
<A NAME="edit_doc(estraier.pure.Document)"><!-- --></A><H3>
edit_doc</H3>
<PRE>
public boolean <B>edit_doc</B>(<A HREF="../../estraier/pure/Document.html" title="class in estraier.pure">Document</A> doc)</PRE>
<DL>
<DD>Edit attributes of a document.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>doc</CODE> - a document object.
<DT><B>Returns:</B><DD>true if success, else it is false.</DL>
</DD>
</DL>
<HR>
<A NAME="etch_doc_by_uri(java.lang.String)"><!-- --></A><H3>
etch_doc_by_uri</H3>
<PRE>
public java.util.Map <B>etch_doc_by_uri</B>(java.lang.String uri)</PRE>
<DL>
<DD>Extract keywords of a document specified by URI.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>uri</CODE> - the URI of a registered document.
<DT><B>Returns:</B><DD>a map object of keywords and their scores in decimal string or `null' on error.</DL>
</DD>
</DL>
<HR>
<A NAME="etch_doc(int)"><!-- --></A><H3>
etch_doc</H3>
<PRE>
public java.util.Map <B>etch_doc</B>(int id)</PRE>
<DL>
<DD>Extract keywords of a document.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>id</CODE> - the ID number of a registered document.
<DT><B>Returns:</B><DD>a map object of keywords and their scores in decimal string or `null' on error.</DL>
</DD>
</DL>
<HR>
<A NAME="get_doc_attr_by_uri(java.lang.String, java.lang.String)"><!-- --></A><H3>
get_doc_attr_by_uri</H3>
<PRE>
public java.lang.String <B>get_doc_attr_by_uri</B>(java.lang.String uri,
java.lang.String name)</PRE>
<DL>
<DD>Retrieve the value of an attribute of a document specified by URI
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>uri</CODE> - the URI of a registered document.<DD><CODE>name</CODE> - the name of an attribute.
<DT><B>Returns:</B><DD>the value of the attribute or `null' if it does not exist.</DL>
</DD>
</DL>
<HR>
<A NAME="get_doc_attr(int, java.lang.String)"><!-- --></A><H3>
get_doc_attr</H3>
<PRE>
public java.lang.String <B>get_doc_attr</B>(int id,
java.lang.String name)</PRE>
<DL>
<DD>Retrieve the value of an attribute of a document.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>id</CODE> - the ID number of a registered document.<DD><CODE>name</CODE> - the name of an attribute.
<DT><B>Returns:</B><DD>the value of the attribute or `null' if it does not exist.</DL>
</DD>
</DL>
<HR>
<A NAME="get_doc_by_uri(java.lang.String)"><!-- --></A><H3>
get_doc_by_uri</H3>
<PRE>
public <A HREF="../../estraier/pure/Document.html" title="class in estraier.pure">Document</A> <B>get_doc_by_uri</B>(java.lang.String uri)</PRE>
<DL>
<DD>Retrieve a document specified by URI.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>uri</CODE> - the URI of a registered document.
<DT><B>Returns:</B><DD>a document object. On error, `null' is returned.</DL>
</DD>
</DL>
<HR>
<A NAME="get_doc(int)"><!-- --></A><H3>
get_doc</H3>
<PRE>
public <A HREF="../../estraier/pure/Document.html" title="class in estraier.pure">Document</A> <B>get_doc</B>(int id)</PRE>
<DL>
<DD>Retrieve a document.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>id</CODE> - the ID number of a registered document.
<DT><B>Returns:</B><DD>a document object. On error, `null' is returned.</DL>
</DD>
</DL>
<HR>
<A NAME="label()"><!-- --></A><H3>
label</H3>
<PRE>
public java.lang.String <B>label</B>()</PRE>
<DL>
<DD>Get the label.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>the label. On error, `null' is returned.</DL>
</DD>
</DL>
<HR>
<A NAME="links()"><!-- --></A><H3>
links</H3>
<PRE>
public java.util.List <B>links</B>()</PRE>
<DL>
<DD>Get a list of expressions of links.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>a list object of expressions of links. Each element is a TSV string and has three
fields of the URL, the label, and the score. On error, `null' is returned.</DL>
</DD>
</DL>
<HR>
<A NAME="name()"><!-- --></A><H3>
name</H3>
<PRE>
public java.lang.String <B>name</B>()</PRE>
<DL>
<DD>Get the name.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>the name. On error, `null' is returned.</DL>
</DD>
</DL>
<HR>
<A NAME="optimize()"><!-- --></A><H3>
optimize</H3>
<PRE>
public boolean <B>optimize</B>()</PRE>
<DL>
<DD>Optimize the database.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>true if success, else it is false.</DL>
</DD>
</DL>
<HR>
<A NAME="out_doc_by_uri(java.lang.String)"><!-- --></A><H3>
out_doc_by_uri</H3>
<PRE>
public boolean <B>out_doc_by_uri</B>(java.lang.String uri)</PRE>
<DL>
<DD>Remove a document specified by URI.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>uri</CODE> - the URI of a registered document.
<DT><B>Returns:</B><DD>true if success, else it is false.</DL>
</DD>
</DL>
<HR>
<A NAME="out_doc(int)"><!-- --></A><H3>
out_doc</H3>
<PRE>
public boolean <B>out_doc</B>(int id)</PRE>
<DL>
<DD>Remove a document.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>id</CODE> - the ID number of a registered document.
<DT><B>Returns:</B><DD>true if success, else it is false.</DL>
</DD>
</DL>
<HR>
<A NAME="put_doc(estraier.pure.Document)"><!-- --></A><H3>
put_doc</H3>
<PRE>
public boolean <B>put_doc</B>(<A HREF="../../estraier/pure/Document.html" title="class in estraier.pure">Document</A> doc)</PRE>
<DL>
<DD>Add a document.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>doc</CODE> - a document object to register.
<DT><B>Returns:</B><DD>true if success, else it is false.</DL>
</DD>
</DL>
<HR>
<A NAME="search(estraier.pure.Condition, int)"><!-- --></A><H3>
search</H3>
<PRE>
public <A HREF="../../estraier/pure/NodeResult.html" title="class in estraier.pure">NodeResult</A> <B>search</B>(<A HREF="../../estraier/pure/Condition.html" title="class in estraier.pure">Condition</A> cond,
int depth)</PRE>
<DL>
<DD>Search for documents corresponding a condition.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>cond</CODE> - a condition object.<DD><CODE>depth</CODE> - the depth of meta search.
<DT><B>Returns:</B><DD>a node result object. On error, `null' is returned.</DL>
</DD>
</DL>
<HR>
<A NAME="set_auth(java.lang.String, java.lang.String)"><!-- --></A><H3>
set_auth</H3>
<PRE>
public void <B>set_auth</B>(java.lang.String name,
java.lang.String password)</PRE>
<DL>
<DD>Set the authentication information.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>name</CODE> - the name of authentication.<DD><CODE>password</CODE> - the password of the authentication.</DL>
</DD>
</DL>
<HR>
<A NAME="set_link(java.lang.String, java.lang.String, int)"><!-- --></A><H3>
set_link</H3>
<PRE>
public boolean <B>set_link</B>(java.lang.String url,
java.lang.String label,
int credit)</PRE>
<DL>
<DD>Manage a link.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>url</CODE> - the URL of the target node of a link.<DD><CODE>label</CODE> - the label of the link.<DD><CODE>credit</CODE> - the credit of the link. If it is negative, the link is removed.
<DT><B>Returns:</B><DD>true if success, else it is false.</DL>
</DD>
</DL>
<HR>
<A NAME="set_proxy(java.lang.String, int)"><!-- --></A><H3>
set_proxy</H3>
<PRE>
public void <B>set_proxy</B>(java.lang.String host,
int port)</PRE>
<DL>
<DD>Set the proxy information.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>host</CODE> - the host name of a proxy server.<DD><CODE>port</CODE> - the port number of the proxy server.</DL>
</DD>
</DL>
<HR>
<A NAME="set_snippet_width(int, int, int)"><!-- --></A><H3>
set_snippet_width</H3>
<PRE>
public void <B>set_snippet_width</B>(int wwidth,
int hwidth,
int awidth)</PRE>
<DL>
<DD>Set width of snippet in the result.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>wwidth</CODE> - whole width of a snippet. By default, it is 480. If it is 0, no snippet is
sent. If it is negative, whole body text is sent instead of snippet.<DD><CODE>hwidth</CODE> - width of strings picked up from the beginning of the text. By default, it
is 96. If it is negative 0, the current setting is not changed.<DD><CODE>awidth</CODE> - width of strings picked up around each highlighted word. By default, it is
96. If it is negative, the current setting is not changed.</DL>
</DD>
</DL>
<HR>
<A NAME="set_timeout(int)"><!-- --></A><H3>
set_timeout</H3>
<PRE>
public void <B>set_timeout</B>(int sec)</PRE>
<DL>
<DD>Set timeout.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>sec</CODE> - timeout in seconds.</DL>
</DD>
</DL>
<HR>
<A NAME="set_url(java.lang.String)"><!-- --></A><H3>
set_url</H3>
<PRE>
public void <B>set_url</B>(java.lang.String url)</PRE>
<DL>
<DD>Set the URL of a node server.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>url</CODE> - the URL of a node server.</DL>
</DD>
</DL>
<HR>
<A NAME="set_user(java.lang.String, int)"><!-- --></A><H3>
set_user</H3>
<PRE>
public boolean <B>set_user</B>(java.lang.String name,
int mode)</PRE>
<DL>
<DD>Manage a user account.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>name</CODE> - the name of a user.<DD><CODE>mode</CODE> - the operation mode. 0 means to delete the account. 1 means to set the
account as an administrator. 2 means to set the account as a guest.
<DT><B>Returns:</B><DD>true if success, else it is false.</DL>
</DD>
</DL>
<HR>
<A NAME="size()"><!-- --></A><H3>
size</H3>
<PRE>
public double <B>size</B>()</PRE>
<DL>
<DD>Get the size of the datbase.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>the size of the datbase. On error, -1.0 is returned.</DL>
</DD>
</DL>
<HR>
<A NAME="status()"><!-- --></A><H3>
status</H3>
<PRE>
public int <B>status</B>()</PRE>
<DL>
<DD>Get the status code of the last request.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>the status code of the last request. -1 means failure of connection.</DL>
</DD>
</DL>
<HR>
<A NAME="sync()"><!-- --></A><H3>
sync</H3>
<PRE>
public boolean <B>sync</B>()</PRE>
<DL>
<DD>Synchronize updating contents of the database.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>true if success, else it is false.</DL>
</DD>
</DL>
<HR>
<A NAME="uri_to_id(java.lang.String)"><!-- --></A><H3>
uri_to_id</H3>
<PRE>
public int <B>uri_to_id</B>(java.lang.String uri)</PRE>
<DL>
<DD>Get the ID of a document specified by URI.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>uri</CODE> - the URI of a registered document.
<DT><B>Returns:</B><DD>the ID of the document. On error, -1 is returned.</DL>
</DD>
</DL>
<HR>
<A NAME="users()"><!-- --></A><H3>
users</H3>
<PRE>
public java.util.List <B>users</B>()</PRE>
<DL>
<DD>Get a list of names of users.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>a list object of names of users. On error, `null' is returned.</DL>
</DD>
</DL>
<HR>
<A NAME="word_num()"><!-- --></A><H3>
word_num</H3>
<PRE>
public int <B>word_num</B>()</PRE>
<DL>
<DD>Get the number of unique words.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>the number of unique words. On error, -1 is returned.</DL>
</DD>
</DL>
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