1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2 <!--NewPage--> 3 <HTML> 4 <HEAD> 5 <!-- Generated by javadoc (build 1.5.0_16) on Mon Oct 12 16:11:19 PDT 2009 --> 6 <TITLE> 7 Qualifier 8 </TITLE> 9 10 <META NAME="keywords" CONTENT="javax.inject.Qualifier class"> 11 12 <LINK REL ="stylesheet" TYPE="text/css" HREF="../../stylesheet.css" TITLE="Style"> 13 14 <SCRIPT type="text/javascript"> 15 function windowTitle() 16 { 17 parent.document.title="Qualifier"; 18 } 19 </SCRIPT> 20 <NOSCRIPT> 21 </NOSCRIPT> 22 23 </HEAD> 24 25 <BODY BGCOLOR="white" onload="windowTitle();"> 26 27 28 <!-- ========= START OF TOP NAVBAR ======= --> 29 <A NAME="navbar_top"><!-- --></A> 30 <A HREF="#skip-navbar_top" title="Skip navigation links"></A> 31 <TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> 32 <TR> 33 <TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> 34 <A NAME="navbar_top_firstrow"><!-- --></A> 35 <TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> 36 <TR ALIGN="center" VALIGN="top"> 37 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../javax/inject/package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> 38 <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> 39 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> 40 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> 41 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> 42 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> 43 </TR> 44 </TABLE> 45 </TD> 46 <TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM> 47 </EM> 48 </TD> 49 </TR> 50 51 <TR> 52 <TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 53 <A HREF="../../javax/inject/Provider.html" title="interface in javax.inject"><B>PREV CLASS</B></A> 54 <A HREF="../../javax/inject/Scope.html" title="annotation in javax.inject"><B>NEXT CLASS</B></A></FONT></TD> 55 <TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 56 <A HREF="../../index.html?javax/inject/Qualifier.html" target="_top"><B>FRAMES</B></A> 57 <A HREF="Qualifier.html" target="_top"><B>NO FRAMES</B></A> 58 <SCRIPT type="text/javascript"> 59 <!-- 60 if(window==top) { 61 document.writeln('<A HREF="../../allclasses-noframe.html"><B>All Classes</B></A>'); 62 } 63 //--> 64 </SCRIPT> 65 <NOSCRIPT> 66 <A HREF="../../allclasses-noframe.html"><B>All Classes</B></A> 67 </NOSCRIPT> 68 69 70 </FONT></TD> 71 </TR> 72 <TR> 73 <TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 74 SUMMARY: REQUIRED | OPTIONAL</FONT></TD> 75 <TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 76 DETAIL: ELEMENT</FONT></TD> 77 </TR> 78 </TABLE> 79 <A NAME="skip-navbar_top"></A> 80 <!-- ========= END OF TOP NAVBAR ========= --> 81 82 <HR> 83 <!-- ======== START OF CLASS DATA ======== --> 84 <H2> 85 <FONT SIZE="-1"> 86 javax.inject</FONT> 87 <BR> 88 Annotation Type Qualifier</H2> 89 <HR> 90 <DL> 91 <DT><PRE><FONT SIZE="-1">@Target(value=ANNOTATION_TYPE) 92 @Retention(value=RUNTIME) 93 @Documented 94 </FONT>public @interface <B>Qualifier</B></DL> 95 </PRE> 96 97 <P> 98 Identifies qualifier annotations. Anyone can define a new qualifier. A 99 qualifier annotation: 100 101 <ul> 102 <li>is annotated with <code>@Qualifier</code>, <code>@Retention(RUNTIME)</code>, 103 and typically <code>@Documented</code>.</li> 104 <li>can have attributes.</li> 105 <li>may be part of the public API, much like the dependency type, but 106 unlike implementation types which needn't be part of the public 107 API.</li> 108 <li>may have restricted usage if annotated with <code>@Target</code>. While 109 this specification covers applying qualifiers to fields and 110 parameters only, some injector configurations might use qualifier 111 annotations in other places (on methods or classes for example).</li> 112 </ul> 113 114 <p>For example: 115 116 <pre> 117 @java.lang.annotation.Documented 118 @java.lang.annotation.Retention(RUNTIME) 119 @javax.inject.Qualifier 120 public @interface Leather { 121 Color color() default Color.TAN; 122 public enum Color { RED, BLACK, TAN } 123 }</pre> 124 <P> 125 126 <P> 127 <DL> 128 <DT><B>See Also:</B><DD><A HREF="../../javax/inject/Named.html" title="annotation in javax.inject"><CODE>@Named</CODE></A></DL> 129 130 <P> 131 132 <P> 133 <!-- ========= END OF CLASS DATA ========= --> 134 <HR> 135 136 137 <!-- ======= START OF BOTTOM NAVBAR ====== --> 138 <A NAME="navbar_bottom"><!-- --></A> 139 <A HREF="#skip-navbar_bottom" title="Skip navigation links"></A> 140 <TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> 141 <TR> 142 <TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> 143 <A NAME="navbar_bottom_firstrow"><!-- --></A> 144 <TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> 145 <TR ALIGN="center" VALIGN="top"> 146 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../javax/inject/package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> 147 <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> 148 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> 149 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> 150 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> 151 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> 152 </TR> 153 </TABLE> 154 </TD> 155 <TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM> 156 </EM> 157 </TD> 158 </TR> 159 160 <TR> 161 <TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 162 <A HREF="../../javax/inject/Provider.html" title="interface in javax.inject"><B>PREV CLASS</B></A> 163 <A HREF="../../javax/inject/Scope.html" title="annotation in javax.inject"><B>NEXT CLASS</B></A></FONT></TD> 164 <TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 165 <A HREF="../../index.html?javax/inject/Qualifier.html" target="_top"><B>FRAMES</B></A> 166 <A HREF="Qualifier.html" target="_top"><B>NO FRAMES</B></A> 167 <SCRIPT type="text/javascript"> 168 <!-- 169 if(window==top) { 170 document.writeln('<A HREF="../../allclasses-noframe.html"><B>All Classes</B></A>'); 171 } 172 //--> 173 </SCRIPT> 174 <NOSCRIPT> 175 <A HREF="../../allclasses-noframe.html"><B>All Classes</B></A> 176 </NOSCRIPT> 177 178 179 </FONT></TD> 180 </TR> 181 <TR> 182 <TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 183 SUMMARY: REQUIRED | OPTIONAL</FONT></TD> 184 <TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 185 DETAIL: ELEMENT</FONT></TD> 186 </TR> 187 </TABLE> 188 <A NAME="skip-navbar_bottom"></A> 189 <!-- ======== END OF BOTTOM NAVBAR ======= --> 190 191 <HR> 192 <font size='-1'>Copyright (C) 2009 <a href='http://code.google.com/p/atinject/'>The JSR-330 Expert Group</a>. Licensed under the <a href='http://www.apache.org/licenses/LICENSE-2.0'>Apache License</a>, Version 2.0.</font> 193 </BODY> 194 </HTML> 195
