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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><TITLE>DBObject (Project JXTA J2SE)</TITLE><META NAME="keywords" CONTENT="net.jxta.impl.xindice.core.DBObject interface"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="DBObject (Project JXTA J2SE)";}</SCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=3 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/DBObject.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM><a href='http://www.jxta.org' target='_blank'>Project JXTA</a></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> PREV CLASS NEXT CLASS</FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../../index.html" target="_top"><B>FRAMES</B></A> <A HREF="DBObject.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../../../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../../../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">net.jxta.impl.xindice.core</FONT><BR>Interface DBObject</H2><DL><DT><B>All Known Subinterfaces:</B> <DD><A HREF="../../../../../net/jxta/impl/xindice/core/filer/Filer.html" title="interface in net.jxta.impl.xindice.core.filer">Filer</A>, <A HREF="../../../../../net/jxta/impl/xindice/core/indexer/Indexer.html" title="interface in net.jxta.impl.xindice.core.indexer">Indexer</A></DD></DL><DL><DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../../../net/jxta/impl/xindice/core/filer/BTreeFiler.html" title="class in net.jxta.impl.xindice.core.filer">BTreeFiler</A>, <A HREF="../../../../../net/jxta/impl/xindice/core/filer/MemFiler.html" title="class in net.jxta.impl.xindice.core.filer">MemFiler</A>, <A HREF="../../../../../net/jxta/impl/xindice/core/indexer/NameIndexer.html" title="class in net.jxta.impl.xindice.core.indexer">NameIndexer</A></DD></DL><HR><DL><DT>public interface <B>DBObject</B></DL><P>DBObject is the interface implemented by all Xindice database objects. DBObjects are typically objects that can be managed using XML configuration information, which is typically stored in the system database. XMLObjects are not considered DBObjects because of the steps involved in having to generate them, which is usually compilation of source code.<P><P><HR><P><!-- ======== NESTED CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><!-- ======== CONSTRUCTOR SUMMARY ======== --><!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Method Summary</B></FONT></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="../../../../../net/jxta/impl/xindice/core/DBObject.html#close()">close</A></B>()</CODE><BR> close closes the DBObject</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="../../../../../net/jxta/impl/xindice/core/DBObject.html#create()">create</A></B>()</CODE><BR> create creates a new DBObject and any associated resources for the new DBObject, such as disk files, etc.</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="../../../../../net/jxta/impl/xindice/core/DBObject.html#drop()">drop</A></B>()</CODE><BR> drop instructs the DBObjectimplementation to remove itself from existence. </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="../../../../../net/jxta/impl/xindice/core/DBObject.html#exists()">exists</A></B>()</CODE><BR> exists returns whether or not a physical representation of this DBObject actually exists. </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="../../../../../net/jxta/impl/xindice/core/DBObject.html#isOpened()">isOpened</A></B>()</CODE><BR> isOpened returns whether or not the DBObject is opened for business.</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="../../../../../net/jxta/impl/xindice/core/DBObject.html#open()">open</A></B>()</CODE><BR> open opens the DBObject</TD></TR></TABLE> <P><!-- ============ FIELD DETAIL =========== --><!-- ========= CONSTRUCTOR DETAIL ======== --><!-- ============ METHOD DETAIL ========== --><A NAME="method_detail"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Method Detail</B></FONT></TD></TR></TABLE><A NAME="create()"><!-- --></A><H3>create</H3><PRE>public boolean <B>create</B>() throws <A HREF="../../../../../net/jxta/impl/xindice/core/DBException.html" title="class in net.jxta.impl.xindice.core">DBException</A></PRE><DL><DD>create creates a new DBObject and any associated resources for the new DBObject, such as disk files, etc.<P><DD><DL><DT><B>Returns:</B><DD>Whether or not the DBObject was created<DT><B>Throws:</B><DD><CODE><A HREF="../../../../../net/jxta/impl/xindice/core/DBException.html" title="class in net.jxta.impl.xindice.core">DBException</A></CODE></DL></DD></DL><HR><A NAME="open()"><!-- --></A><H3>open</H3><PRE>public boolean <B>open</B>() throws <A HREF="../../../../../net/jxta/impl/xindice/core/DBException.html" title="class in net.jxta.impl.xindice.core">DBException</A></PRE><DL><DD>open opens the DBObject<P><DD><DL><DT><B>Returns:</B><DD>Whether or not the DBObject was opened<DT><B>Throws:</B><DD><CODE><A HREF="../../../../../net/jxta/impl/xindice/core/DBException.html" title="class in net.jxta.impl.xindice.core">DBException</A></CODE></DL></DD></DL><HR><A NAME="isOpened()"><!-- --></A><H3>isOpened</H3><PRE>public boolean <B>isOpened</B>() throws <A HREF="../../../../../net/jxta/impl/xindice/core/DBException.html" title="class in net.jxta.impl.xindice.core">DBException</A></PRE><DL><DD>isOpened returns whether or not the DBObject is opened for business.<P><DD><DL><DT><B>Returns:</B><DD>The open status of the DBObject<DT><B>Throws:</B><DD><CODE><A HREF="../../../../../net/jxta/impl/xindice/core/DBException.html" title="class in net.jxta.impl.xindice.core">DBException</A></CODE></DL></DD></DL><HR><A NAME="exists()"><!-- --></A><H3>exists</H3><PRE>public boolean <B>exists</B>() throws <A HREF="../../../../../net/jxta/impl/xindice/core/DBException.html" title="class in net.jxta.impl.xindice.core">DBException</A></PRE><DL><DD>exists returns whether or not a physical representation of this DBObject actually exists. In the case of a HashFiler, this would check for the file, and in the case of an FTPFiler, it might perform a connection check.<P><DD><DL><DT><B>Returns:</B><DD>Whether or not the physical resource exists<DT><B>Throws:</B><DD><CODE><A HREF="../../../../../net/jxta/impl/xindice/core/DBException.html" title="class in net.jxta.impl.xindice.core">DBException</A></CODE></DL></DD></DL><HR><A NAME="drop()"><!-- --></A><H3>drop</H3><PRE>public boolean <B>drop</B>() throws <A HREF="../../../../../net/jxta/impl/xindice/core/DBException.html" title="class in net.jxta.impl.xindice.core">DBException</A></PRE><DL><DD>drop instructs the DBObjectimplementation to remove itself from existence. The DBObject's parent is responsible for removing any references to the DBObject in its own context.<P><DD><DL><DT><B>Returns:</B><DD>Whether or not the DBObject was dropped<DT><B>Throws:</B><DD><CODE><A HREF="../../../../../net/jxta/impl/xindice/core/DBException.html" title="class in net.jxta.impl.xindice.core">DBException</A></CODE></DL></DD></DL><HR><A NAME="close()"><!-- --></A><H3>close</H3><PRE>public boolean <B>close</B>() throws <A HREF="../../../../../net/jxta/impl/xindice/core/DBException.html" title="class in net.jxta.impl.xindice.core">DBException</A></PRE><DL><DD>close closes the DBObject<P><DD><DL><DT><B>Returns:</B><DD>Whether or not the DBObject was closed<DT><B>Throws:</B><DD><CODE><A HREF="../../../../../net/jxta/impl/xindice/core/DBException.html" title="class in net.jxta.impl.xindice.core">DBException</A></CODE></DL></DD></DL><!-- ========= END OF CLASS DATA ========= --><HR><!-- ======= START OF BOTTOM NAVBAR ====== --><A NAME="navbar_bottom"><!-- --></A><A HREF="#skip-navbar_bottom" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=3 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_bottom_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/DBObject.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM>JXTA J2SE</EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> PREV CLASS NEXT CLASS</FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../../index.html" target="_top"><B>FRAMES</B></A> <A HREF="DBObject.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../../../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../../../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_bottom"></A><!-- ======== END OF BOTTOM NAVBAR ======= --><HR></BODY></HTML>⌨️ 快捷键说明
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