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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Frameset//EN""http://www.w3.org/TR/REC-html40/frameset.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc on Thu Apr 27 23:34:28 PDT 2000 --><TITLE>Java 2 Platform SE v1.3: Interface BeanContextServiceProvider</TITLE><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style"></HEAD><BODY BGCOLOR="white"><!-- ========== START OF NAVBAR ========== --><A NAME="navbar_top"><!-- --></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3"> <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/BeanContextServiceProvider.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-files/index-1.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><b>Java<sup><font size=-2>TM</font></sup> 2 Platform<br>Std. Ed. v1.3</b></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../java/beans/beancontext/BeanContextProxy.html"><B>PREV CLASS</B></A> <A HREF="../../../java/beans/beancontext/BeanContextServiceProviderBeanInfo.html"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../index.html" TARGET="_top"><B>FRAMES</B></A> <A HREF="BeanContextServiceProvider.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | 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><!-- =========== END OF NAVBAR =========== --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">java.beans.beancontext</FONT><BR>Interface BeanContextServiceProvider</H2><DL><DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../java/beans/beancontext/BeanContextServicesSupport.BCSSProxyServiceProvider.html">BeanContextServicesSupport.BCSSProxyServiceProvider</A></DD></DL><HR><DL><DT>public interface <B>BeanContextServiceProvider</B></DL><P><p> One of the primary functions of a BeanContext is to act a as rendezvous between JavaBeans, and BeanContextServiceProviders. </p> <p> A JavaBean nested within a BeanContext, may ask that BeanContext to provide an instance of a "service", based upon a reference to a Java Class object that represents that service. </p> <p> If such a service has been registered with the context, or one of its nesting context's, in the case where a context delegate to its context to satisfy a service request, then the BeanContextServiceProvider associated with the service is asked to provide an instance of that service. </p> <p> The ServcieProvider may always return the same instance, or it may construct a new instance for each request. </p><P><HR><P><!-- ======== INNER CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><!-- ======== CONSTRUCTOR SUMMARY ======== --><!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><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> <A HREF="../../../java/util/Iterator.html">Iterator</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../java/beans/beancontext/BeanContextServiceProvider.html#getCurrentServiceSelectors(java.beans.beancontext.BeanContextServices, java.lang.Class)">getCurrentServiceSelectors</A></B>(<A HREF="../../../java/beans/beancontext/BeanContextServices.html">BeanContextServices</A> bcs, <A HREF="../../../java/lang/Class.html">Class</A> serviceClass)</CODE><BR> Invoked by <code>BeanContextServices</code>, this method gets the current service selectors for the specified service.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../java/lang/Object.html">Object</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../java/beans/beancontext/BeanContextServiceProvider.html#getService(java.beans.beancontext.BeanContextServices, java.lang.Object, java.lang.Class, java.lang.Object)">getService</A></B>(<A HREF="../../../java/beans/beancontext/BeanContextServices.html">BeanContextServices</A> bcs, <A HREF="../../../java/lang/Object.html">Object</A> requestor, <A HREF="../../../java/lang/Class.html">Class</A> serviceClass, <A HREF="../../../java/lang/Object.html">Object</A> serviceSelector)</CODE><BR> Invoked by <code>BeanContextServices</code>, this method requests an instance of a service from this <code>BeanContextServiceProvider</code>.</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="../../../java/beans/beancontext/BeanContextServiceProvider.html#releaseService(java.beans.beancontext.BeanContextServices, java.lang.Object, java.lang.Object)">releaseService</A></B>(<A HREF="../../../java/beans/beancontext/BeanContextServices.html">BeanContextServices</A> bcs, <A HREF="../../../java/lang/Object.html">Object</A> requestor, <A HREF="../../../java/lang/Object.html">Object</A> service)</CODE><BR> Invoked by <code>BeanContextServices</code>, this method releases a nested <code>BeanContextChild</code>'s (or any arbitrary object associated with a <code>BeanContextChild</code>) reference to the specified service.</TD></TR></TABLE> <P><!-- ============ FIELD DETAIL =========== --><!-- ========= CONSTRUCTOR DETAIL ======== --><!-- ============ METHOD DETAIL ========== --><A NAME="method_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Method Detail</B></FONT></TD></TR></TABLE><A NAME="getService(java.beans.beancontext.BeanContextServices, java.lang.Object, java.lang.Class, java.lang.Object)"><!-- --></A><H3>getService</H3><PRE>public <A HREF="../../../java/lang/Object.html">Object</A> <B>getService</B>(<A HREF="../../../java/beans/beancontext/BeanContextServices.html">BeanContextServices</A> bcs, <A HREF="../../../java/lang/Object.html">Object</A> requestor, <A HREF="../../../java/lang/Class.html">Class</A> serviceClass, <A HREF="../../../java/lang/Object.html">Object</A> serviceSelector)</PRE><DL><DD>Invoked by <code>BeanContextServices</code>, this method requests an instance of a service from this <code>BeanContextServiceProvider</code>.<DD><DL><DT><B>Parameters:</B><DD><CODE>bcs</CODE> - The <code>BeanContextServices</code> associated with this particular request. This parameter enables the <code>BeanContextServiceProvider</code> to distinguish service requests from multiple sources.<DD><CODE>requestor</CODE> - The object requesting the service<DD><CODE>serviceClass</CODE> - The service requested<DD><CODE>serviceSelector</CODE> - the service dependent parameter for a particular service, or <code>null</code> if not applicable.<DT><B>Returns:</B><DD>a reference to the requested service</DL></DD></DL><HR><A NAME="releaseService(java.beans.beancontext.BeanContextServices, java.lang.Object, java.lang.Object)"><!-- --></A><H3>releaseService</H3><PRE>public void <B>releaseService</B>(<A HREF="../../../java/beans/beancontext/BeanContextServices.html">BeanContextServices</A> bcs, <A HREF="../../../java/lang/Object.html">Object</A> requestor, <A HREF="../../../java/lang/Object.html">Object</A> service)</PRE><DL><DD>Invoked by <code>BeanContextServices</code>, this method releases a nested <code>BeanContextChild</code>'s (or any arbitrary object associated with a <code>BeanContextChild</code>) reference to the specified service.<DD><DL><DT><B>Parameters:</B><DD><CODE>bcs</CODE> - the <code>BeanContextServices</code> associated with this particular release request<DD><CODE>requestor</CODE> - the object requesting the service to be released<DD><CODE>service</CODE> - the service that is to be released</DL></DD></DL><HR><A NAME="getCurrentServiceSelectors(java.beans.beancontext.BeanContextServices, java.lang.Class)"><!-- --></A><H3>getCurrentServiceSelectors</H3><PRE>public <A HREF="../../../java/util/Iterator.html">Iterator</A> <B>getCurrentServiceSelectors</B>(<A HREF="../../../java/beans/beancontext/BeanContextServices.html">BeanContextServices</A> bcs, <A HREF="../../../java/lang/Class.html">Class</A> serviceClass)</PRE><DL><DD>Invoked by <code>BeanContextServices</code>, this method gets the current service selectors for the specified service. A service selector is a service specific parameter, typical examples of which could include: a parameter to a constructor for the service implementation class, a value for a particular service's property, or a key into a map of existing implementations.<DD><DL><DT><B>Parameters:</B><DD><CODE>bcs</CODE> - the <code>BeanContextServices</code> for this request<DD><CODE>service</CODE> - the specified service<DT><B>Returns:</B><DD>the current service selectors for the specified serviceClass</DL></DD></DL><!-- ========= END OF CLASS DATA ========= --><HR><!-- ========== START OF NAVBAR ========== --><A NAME="navbar_bottom"><!-- --></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_bottom_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3"> <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/BeanContextServiceProvider.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-files/index-1.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><b>Java<sup><font size=-2>TM</font></sup> 2 Platform<br>Std. Ed. v1.3</b></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../java/beans/beancontext/BeanContextProxy.html"><B>PREV CLASS</B></A> <A HREF="../../../java/beans/beancontext/BeanContextServiceProviderBeanInfo.html"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../index.html" TARGET="_top"><B>FRAMES</B></A> <A HREF="BeanContextServiceProvider.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | 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><!-- =========== END OF NAVBAR =========== --><HR><font size="-1"><a href="http://java.sun.com/cgi-bin/bugreport.cgi">Submit a bug or feature</a><br>For further API reference and developer documentation, see <a href="http://java.sun.com/products/jdk/1.3/devdocs-vs-specs.html">Java 2 SDK SE Developer Documentation</a>. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples. <p>Java, Java 2D, and JDBC are trademarks or registered trademarks of Sun Microsystems, Inc. in the US and other countries.<br>Copyright 1993-2000 Sun Microsystems, Inc. 901 San Antonio Road<br>Palo Alto, California, 94303, U.S.A. All Rights Reserved.</font></BODY></HTML>⌨️ 快捷键说明
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