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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 23:37:31 PDT 2000 --><TITLE>Java 2 Platform SE v1.3: Interface Attribute</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/Attribute.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"> PREV CLASS <A HREF="../../../javax/naming/directory/Attributes.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="Attribute.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | <A HREF="#field_summary">FIELD</A> | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: <A HREF="#field_detail">FIELD</A> | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><!-- =========== END OF NAVBAR =========== --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">javax.naming.directory</FONT><BR>Interface Attribute</H2><DL><DT><B>All Superinterfaces:</B> <DD><A HREF="../../../java/lang/Cloneable.html">Cloneable</A>, <A HREF="../../../java/io/Serializable.html">Serializable</A></DD></DL><DL><DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../javax/naming/directory/BasicAttribute.html">BasicAttribute</A></DD></DL><HR><DL><DT>public interface <B>Attribute</B><DT>extends <A HREF="../../../java/lang/Cloneable.html">Cloneable</A>, <A HREF="../../../java/io/Serializable.html">Serializable</A></DL><P>This interface represents an attribute associated with a named object.<p> In a directory, named objects can have associated with them attributes. The <tt>Attribute</tt> interface represents an attribute associated with a named object. An attribute contains 0 or more, possibly null, values. The attribute values can be ordered or unordered (see <tt>isOrdered()</tt>). If the values are unordered, no duplicates are allowed. If the values are ordered, duplicates are allowed.<p> The content and representation of an attribute and its values is defined by the attribute's <em>schema</em>. The schema contains information about the attribute's syntax and other properties about the attribute. See <tt>getAttributeDefinition()</tt> and <tt>getAttributeSyntaxDefinition()</tt> for details regarding how to get schema information about an attribute if the underlying directory service supports schemas.<p> Equality of two attributes is determined by the implementation class. A simple implementation can use <tt>Object.equals()</tt> to determine equality of attribute values, while a more sophisticated implementation might make use of schema information to determine equality. Similarly, one implementation might provide a static storage structure which simply returns the values passed to its constructor, while another implementation might define <tt>get()</tt> and <tt>getAll()</tt>. to get the values dynamically from the directory.<p> Note that updates to <tt>Attribute</tt> (such as adding or removing a value) do not affect the corresponding representation of the attribute in the directory. Updates to the directory can only be effected using operations in the <tt>DirContext</tt> interface.<P><DL><DT><B>Since: </B><DD>1.3</DD><DT><B>See Also: </B><DD><A HREF="../../../javax/naming/directory/BasicAttribute.html"><CODE>BasicAttribute</CODE></A></DL><HR><P><!-- ======== INNER CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><A NAME="field_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Field Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static long</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/naming/directory/Attribute.html#serialVersionUID">serialVersionUID</A></B></CODE><BR> Use serialVersionUID from JNDI 1.1.1 for interoperability.</TD></TR></TABLE> <!-- ======== 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> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/naming/directory/Attribute.html#add(int, java.lang.Object)">add</A></B>(int ix, <A HREF="../../../java/lang/Object.html">Object</A> attrVal)</CODE><BR> Adds an attribute value to the ordered list of attribute values.</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="../../../javax/naming/directory/Attribute.html#add(java.lang.Object)">add</A></B>(<A HREF="../../../java/lang/Object.html">Object</A> attrVal)</CODE><BR> Adds a new value to the attribute.</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/naming/directory/Attribute.html#clear()">clear</A></B>()</CODE><BR> Removes all values from this attribute.</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="../../../javax/naming/directory/Attribute.html#clone()">clone</A></B>()</CODE><BR> Makes a copy of the attribute.</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="../../../javax/naming/directory/Attribute.html#contains(java.lang.Object)">contains</A></B>(<A HREF="../../../java/lang/Object.html">Object</A> attrVal)</CODE><BR> Determines whether a value is in the attribute.</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="../../../javax/naming/directory/Attribute.html#get()">get</A></B>()</CODE><BR> Retrieves one of this attribute's values.</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="../../../javax/naming/directory/Attribute.html#get(int)">get</A></B>(int ix)</CODE><BR> Retrieves the attribute value from the ordered list of attribute values.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../javax/naming/NamingEnumeration.html">NamingEnumeration</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/naming/directory/Attribute.html#getAll()">getAll</A></B>()</CODE><BR> Retrieves an enumeration of the attribute's values.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../javax/naming/directory/DirContext.html">DirContext</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/naming/directory/Attribute.html#getAttributeDefinition()">getAttributeDefinition</A></B>()</CODE><BR> Retrieves the attribute's schema definition.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../javax/naming/directory/DirContext.html">DirContext</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/naming/directory/Attribute.html#getAttributeSyntaxDefinition()">getAttributeSyntaxDefinition</A></B>()</CODE><BR> Retrieves the syntax definition associated with the attribute.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../java/lang/String.html">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/naming/directory/Attribute.html#getID()">getID</A></B>()</CODE><BR> Retrieves the id of this attribute.</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="../../../javax/naming/directory/Attribute.html#isOrdered()">isOrdered</A></B>()</CODE>⌨️ 快捷键说明
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