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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><!-- Generated by javadoc (build 1.5.0_14) on Mon Jan 28 05:46:46 PST 2008 --><TITLE>UIData (Java EE 5)</TITLE><META NAME="keywords" CONTENT="javax.faces.component.UIData class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="UIData (Java EE 5)";}</SCRIPT><NOSCRIPT></NOSCRIPT></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=2 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="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></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../javax/faces/component/UIComponentBase.html" title="class in javax.faces.component"><B>PREV CLASS</B></A> <A HREF="../../../javax/faces/component/UIForm.html" title="class in javax.faces.component"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../index.html?javax/faces/component/UIData.html" target="_top"><B>FRAMES</B></A> <A HREF="UIData.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 | <A HREF="#field_summary">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: <A HREF="#field_detail">FIELD</A> | <A HREF="#constructor_detail">CONSTR</A> | <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">javax.faces.component</FONT><BR>Class UIData</H2><PRE><A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/Object.html" title="class or interface in java.lang">java.lang.Object</A> <IMG SRC="../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../javax/faces/component/UIComponent.html" title="class in javax.faces.component">javax.faces.component.UIComponent</A> <IMG SRC="../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../javax/faces/component/UIComponentBase.html" title="class in javax.faces.component">javax.faces.component.UIComponentBase</A> <IMG SRC="../../../resources/inherit.gif" ALT="extended by "><B>javax.faces.component.UIData</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../javax/faces/component/NamingContainer.html" title="interface in javax.faces.component">NamingContainer</A>, <A HREF="../../../javax/faces/component/StateHolder.html" title="interface in javax.faces.component">StateHolder</A></DD></DL><DL><DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../javax/faces/component/html/HtmlDataTable.html" title="class in javax.faces.component.html">HtmlDataTable</A></DD></DL><HR><DL><DT><PRE>public class <B>UIData</B><DT>extends <A HREF="../../../javax/faces/component/UIComponentBase.html" title="class in javax.faces.component">UIComponentBase</A><DT>implements <A HREF="../../../javax/faces/component/NamingContainer.html" title="interface in javax.faces.component">NamingContainer</A></DL></PRE><P><p><strong>UIData</strong> is a <A HREF="../../../javax/faces/component/UIComponent.html" title="class in javax.faces.component"><CODE>UIComponent</CODE></A> that supports data binding to a collection of data objects represented by a <A HREF="../../../javax/faces/model/DataModel.html" title="class in javax.faces.model"><CODE>DataModel</CODE></A> instance, which is the current value of this component itself (typically established via a <A HREF="../../../javax/el/ValueExpression.html" title="class in javax.el"><CODE>ValueExpression</CODE></A>). During iterative processing over the rows of data in the data model, the object for the current row is exposed as a request attribute under the key specified by the <code>var</code> property.</p> <p>Only children of type <A HREF="../../../javax/faces/component/UIColumn.html" title="class in javax.faces.component"><CODE>UIColumn</CODE></A> should be processed by renderers associated with this component.</p> <p>By default, the <code>rendererType</code> property is set to <code>javax.faces.Table</code>. This value can be changed by calling the <code>setRendererType()</code> method.</p><P><P><HR><P><!-- =========== FIELD SUMMARY =========== --><A NAME="field_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Field Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/faces/component/UIData.html#COMPONENT_FAMILY">COMPONENT_FAMILY</A></B></CODE><BR> The standard component family for this component.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/faces/component/UIData.html#COMPONENT_TYPE">COMPONENT_TYPE</A></B></CODE><BR> The standard component type for this component.</TD></TR></TABLE> <A NAME="fields_inherited_from_class_javax.faces.component.UIComponent"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TH ALIGN="left"><B>Fields inherited from class javax.faces.component.<A HREF="../../../javax/faces/component/UIComponent.html" title="class in javax.faces.component">UIComponent</A></B></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../javax/faces/component/UIComponent.html#bindings">bindings</A></CODE></TD></TR></TABLE> <A NAME="fields_inherited_from_class_javax.faces.component.NamingContainer"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TH ALIGN="left"><B>Fields inherited from interface javax.faces.component.<A HREF="../../../javax/faces/component/NamingContainer.html" title="interface in javax.faces.component">NamingContainer</A></B></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../javax/faces/component/NamingContainer.html#SEPARATOR_CHAR">SEPARATOR_CHAR</A></CODE></TD></TR></TABLE> <!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../javax/faces/component/UIData.html#UIData()">UIData</A></B>()</CODE><BR> Create a new <A HREF="../../../javax/faces/component/UIData.html" title="class in javax.faces.component"><CODE>UIData</CODE></A> instance with default property values.</TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Method Summary</B></FONT></TH></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="../../../javax/faces/component/UIData.html#broadcast(javax.faces.event.FacesEvent)">broadcast</A></B>(<A HREF="../../../javax/faces/event/FacesEvent.html" title="class in javax.faces.event">FacesEvent</A> event)</CODE><BR> Override the default <A HREF="../../../javax/faces/component/UIComponentBase.html#broadcast(javax.faces.event.FacesEvent)"><CODE>UIComponentBase.broadcast(javax.faces.event.FacesEvent)</CODE></A> processing to unwrap any wrapped <A HREF="../../../javax/faces/event/FacesEvent.html" title="class in javax.faces.event"><CODE>FacesEvent</CODE></A> and reset the current row index, before the event is actually broadcast.</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="../../../javax/faces/component/UIData.html#encodeBegin(javax.faces.context.FacesContext)">encodeBegin</A></B>(<A HREF="../../../javax/faces/context/FacesContext.html" title="class in javax.faces.context">FacesContext</A> context)</CODE><BR> In addition to the default behavior, ensure that any saved per-row state for our child input components is discarded unless it is needed to rerender the current page with errors.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/faces/component/UIData.html#getClientId(javax.faces.context.FacesContext)">getClientId</A></B>(<A HREF="../../../javax/faces/context/FacesContext.html" title="class in javax.faces.context">FacesContext</A> context)</CODE><BR> Return a client identifier for this component that includes the current value of the <code>rowIndex</code> property, if it is not set to -1.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected <A HREF="../../../javax/faces/model/DataModel.html" title="class in javax.faces.model">DataModel</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/faces/component/UIData.html#getDataModel()">getDataModel</A></B>()</CODE><BR> Return the internal <A HREF="../../../javax/faces/model/DataModel.html" title="class in javax.faces.model"><CODE>DataModel</CODE></A> object representing the⌨️ 快捷键说明
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