KezvhLib/lib/org.apache.commons.collections/apidocs/org/apache/commons/collections/functors/UniquePredicate.html

   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_07) on Fri Apr 11 15:39:19 BST 2008 -->
   6 <META http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
   7 <TITLE>
   8 UniquePredicate (Commons Collections 3.2.1 API)
   9 </TITLE>
  10
  11 <META NAME="keywords" CONTENT="org.apache.commons.collections.functors.UniquePredicate class">
  12
  13 <LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../../stylesheet.css" TITLE="Style">
  14
  15 <SCRIPT type="text/javascript">
  16 function windowTitle()
  17 {
  18     parent.document.title="UniquePredicate (Commons Collections 3.2.1 API)";
  19 }
  20 </SCRIPT>
  21 <NOSCRIPT>
  22 </NOSCRIPT>
  23
  24 </HEAD>
  25
  26 <BODY BGCOLOR="white" onload="windowTitle();">
  27
  28
  29 <!-- ========= START OF TOP NAVBAR ======= -->
  30 <A NAME="navbar_top"><!-- --></A>
  31 <A HREF="#skip-navbar_top" title="Skip navigation links"></A>
  32 <TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY="">
  33 <TR>
  34 <TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1">
  35 <A NAME="navbar_top_firstrow"><!-- --></A>
  36 <TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY="">
  37   <TR ALIGN="center" VALIGN="top">
  38   <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A>&nbsp;</TD>
  39   <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A>&nbsp;</TD>
  40   <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> &nbsp;<FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT>&nbsp;</TD>
  41   <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="class-use/UniquePredicate.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A>&nbsp;</TD>
  42   <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A>&nbsp;</TD>
  43   <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A>&nbsp;</TD>
  44   <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A>&nbsp;</TD>
  45   <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A>&nbsp;</TD>
  46   </TR>
  47 </TABLE>
  48 </TD>
  49 <TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM>
  50 </EM>
  51 </TD>
  52 </TR>
  53
  54 <TR>
  55 <TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">
  56 &nbsp;<A HREF="../../../../../org/apache/commons/collections/functors/TruePredicate.html" title="class in org.apache.commons.collections.functors"><B>PREV CLASS</B></A>&nbsp;
  57 &nbsp;<A HREF="../../../../../org/apache/commons/collections/functors/WhileClosure.html" title="class in org.apache.commons.collections.functors"><B>NEXT CLASS</B></A></FONT></TD>
  58 <TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">
  59   <A HREF="../../../../../index.html?org/apache/commons/collections/functors/UniquePredicate.html" target="_top"><B>FRAMES</B></A>  &nbsp;
  60 &nbsp;<A HREF="UniquePredicate.html" target="_top"><B>NO FRAMES</B></A>  &nbsp;
  61 &nbsp;<SCRIPT type="text/javascript">
  62   <!--
  63   if(window==top) {
  64     document.writeln('<A HREF="../../../../../allclasses-noframe.html"><B>All Classes</B></A>');
  65   }
  66   //-->
  67 </SCRIPT>
  68 <NOSCRIPT>
  69   <A HREF="../../../../../allclasses-noframe.html"><B>All Classes</B></A>
  70 </NOSCRIPT>
  71
  72
  73 </FONT></TD>
  74 </TR>
  75 <TR>
  76 <TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">
  77   SUMMARY:&nbsp;NESTED&nbsp;|&nbsp;FIELD&nbsp;|&nbsp;<A HREF="#constructor_summary">CONSTR</A>&nbsp;|&nbsp;<A HREF="#method_summary">METHOD</A></FONT></TD>
  78 <TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">
  79 DETAIL:&nbsp;FIELD&nbsp;|&nbsp;<A HREF="#constructor_detail">CONSTR</A>&nbsp;|&nbsp;<A HREF="#method_detail">METHOD</A></FONT></TD>
  80 </TR>
  81 </TABLE>
  82 <A NAME="skip-navbar_top"></A>
  83 <!-- ========= END OF TOP NAVBAR ========= -->
  84
  85 <HR>
  86 <!-- ======== START OF CLASS DATA ======== -->
  87 <H2>
  88 <FONT SIZE="-1">
  89 org.apache.commons.collections.functors</FONT>
  90 <BR>
  91 Class UniquePredicate</H2>
  92 <PRE>
  93 java.lang.Object
  94   <IMG SRC="../../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.commons.collections.functors.UniquePredicate</B>
  95 </PRE>
  96 <DL>
  97 <DT><B>All Implemented Interfaces:</B> <DD>java.io.Serializable, <A HREF="../../../../../org/apache/commons/collections/Predicate.html" title="interface in org.apache.commons.collections">Predicate</A></DD>
  98 </DL>
  99 <HR>
 100 <DL>
 101 <DT><PRE>public final class <B>UniquePredicate</B><DT>extends java.lang.Object<DT>implements <A HREF="../../../../../org/apache/commons/collections/Predicate.html" title="interface in org.apache.commons.collections">Predicate</A>, java.io.Serializable</DL>
 102 </PRE>
 103
 104 <P>
 105 Predicate implementation that returns true the first time an object is
 106  passed into the predicate.
 107 <P>
 108
 109 <P>
 110 <DL>
 111 <DT><B>Since:</B></DT>
 112   <DD>Commons Collections 3.0</DD>
 113 <DT><B>Version:</B></DT>
 114   <DD>$Revision: 646777 $ $Date: 2008-04-10 13:33:15 +0100 (Thu, 10 Apr 2008) $</DD>
 115 <DT><B>Author:</B></DT>
 116   <DD>Stephen Colebourne</DD>
 117 <DT><B>See Also:</B><DD><A HREF="../../../../../serialized-form.html#org.apache.commons.collections.functors.UniquePredicate">Serialized Form</A></DL>
 118 <HR>
 119
 120 <P>
 121
 122 <!-- ======== CONSTRUCTOR SUMMARY ======== -->
 123
 124 <A NAME="constructor_summary"><!-- --></A>
 125 <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
 126 <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
 127 <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
 128 <B>Constructor Summary</B></FONT></TH>
 129 </TR>
 130 <TR BGCOLOR="white" CLASS="TableRowColor">
 131 <TD><CODE><B><A HREF="../../../../../org/apache/commons/collections/functors/UniquePredicate.html#UniquePredicate()">UniquePredicate</A></B>()</CODE>
 132
 133 <BR>
 134 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Constructor that performs no validation.</TD>
 135 </TR>
 136 </TABLE>
 137 &nbsp;
 138 <!-- ========== METHOD SUMMARY =========== -->
 139
 140 <A NAME="method_summary"><!-- --></A>
 141 <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
 142 <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
 143 <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
 144 <B>Method Summary</B></FONT></TH>
 145 </TR>
 146 <TR BGCOLOR="white" CLASS="TableRowColor">
 147 <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
 148 <CODE>&nbsp;boolean</CODE></FONT></TD>
 149 <TD><CODE><B><A HREF="../../../../../org/apache/commons/collections/functors/UniquePredicate.html#evaluate(java.lang.Object)">evaluate</A></B>(java.lang.Object&nbsp;object)</CODE>
 150
 151 <BR>
 152 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Evaluates the predicate returning true if the input object hasn't been
 153  received yet.</TD>
 154 </TR>
 155 <TR BGCOLOR="white" CLASS="TableRowColor">
 156 <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
 157 <CODE>static&nbsp;<A HREF="../../../../../org/apache/commons/collections/Predicate.html" title="interface in org.apache.commons.collections">Predicate</A></CODE></FONT></TD>
 158 <TD><CODE><B><A HREF="../../../../../org/apache/commons/collections/functors/UniquePredicate.html#getInstance()">getInstance</A></B>()</CODE>
 159
 160 <BR>
 161 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Factory to create the predicate.</TD>
 162 </TR>
 163 </TABLE>
 164 &nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
 165 <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
 166 <TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
 167 <TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH>
 168 </TR>
 169 <TR BGCOLOR="white" CLASS="TableRowColor">
 170 <TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
 171 </TR>
 172 </TABLE>
 173 &nbsp;
 174 <P>
 175
 176 <!-- ========= CONSTRUCTOR DETAIL ======== -->
 177
 178 <A NAME="constructor_detail"><!-- --></A>
 179 <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
 180 <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
 181 <TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
 182 <B>Constructor Detail</B></FONT></TH>
 183 </TR>
 184 </TABLE>
 185
 186 <A NAME="UniquePredicate()"><!-- --></A><H3>
 187 UniquePredicate</H3>
 188 <PRE>
 189 public <B>UniquePredicate</B>()</PRE>
 190 <DL>
 191 <DD>Constructor that performs no validation.
 192  Use <code>getInstance</code> if you want that.
 193 <P>
 194 </DL>
 195
 196 <!-- ============ METHOD DETAIL ========== -->
 197
 198 <A NAME="method_detail"><!-- --></A>
 199 <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
 200 <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
 201 <TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
 202 <B>Method Detail</B></FONT></TH>
 203 </TR>
 204 </TABLE>
 205
 206 <A NAME="getInstance()"><!-- --></A><H3>
 207 getInstance</H3>
 208 <PRE>
 209 public static <A HREF="../../../../../org/apache/commons/collections/Predicate.html" title="interface in org.apache.commons.collections">Predicate</A> <B>getInstance</B>()</PRE>
 210 <DL>
 211 <DD>Factory to create the predicate.
 212 <P>
 213 <DD><DL>
 214 </DL>
 215 </DD>
 216 <DD><DL>
 217
 218 <DT><B>Returns:</B><DD>the predicate
 219 <DT><B>Throws:</B>
 220 <DD><CODE>java.lang.IllegalArgumentException</CODE> - if the predicate is null</DL>
 221 </DD>
 222 </DL>
 223 <HR>
 224
 225 <A NAME="evaluate(java.lang.Object)"><!-- --></A><H3>
 226 evaluate</H3>
 227 <PRE>
 228 public boolean <B>evaluate</B>(java.lang.Object&nbsp;object)</PRE>
 229 <DL>
 230 <DD>Evaluates the predicate returning true if the input object hasn't been
 231  received yet.
 232 <P>
 233 <DD><DL>
 234 <DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/apache/commons/collections/Predicate.html#evaluate(java.lang.Object)">evaluate</A></CODE> in interface <CODE><A HREF="../../../../../org/apache/commons/collections/Predicate.html" title="interface in org.apache.commons.collections">Predicate</A></CODE></DL>
 235 </DD>
 236 <DD><DL>
 237 <DT><B>Parameters:</B><DD><CODE>object</CODE> - the input object
 238 <DT><B>Returns:</B><DD>true if this is the first time the object is seen</DL>
 239 </DD>
 240 </DL>
 241 <!-- ========= END OF CLASS DATA ========= -->
 242 <HR>
 243
 244
 245 <!-- ======= START OF BOTTOM NAVBAR ====== -->
 246 <A NAME="navbar_bottom"><!-- --></A>
 247 <A HREF="#skip-navbar_bottom" title="Skip navigation links"></A>
 248 <TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY="">
 249 <TR>
 250 <TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1">
 251 <A NAME="navbar_bottom_firstrow"><!-- --></A>
 252 <TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY="">
 253   <TR ALIGN="center" VALIGN="top">
 254   <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A>&nbsp;</TD>
 255   <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A>&nbsp;</TD>
 256   <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> &nbsp;<FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT>&nbsp;</TD>
 257   <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="class-use/UniquePredicate.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A>&nbsp;</TD>
 258   <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A>&nbsp;</TD>
 259   <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A>&nbsp;</TD>
 260   <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A>&nbsp;</TD>
 261   <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A>&nbsp;</TD>
 262   </TR>
 263 </TABLE>
 264 </TD>
 265 <TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM>
 266 </EM>
 267 </TD>
 268 </TR>
 269
 270 <TR>
 271 <TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">
 272 &nbsp;<A HREF="../../../../../org/apache/commons/collections/functors/TruePredicate.html" title="class in org.apache.commons.collections.functors"><B>PREV CLASS</B></A>&nbsp;
 273 &nbsp;<A HREF="../../../../../org/apache/commons/collections/functors/WhileClosure.html" title="class in org.apache.commons.collections.functors"><B>NEXT CLASS</B></A></FONT></TD>
 274 <TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">
 275   <A HREF="../../../../../index.html?org/apache/commons/collections/functors/UniquePredicate.html" target="_top"><B>FRAMES</B></A>  &nbsp;
 276 &nbsp;<A HREF="UniquePredicate.html" target="_top"><B>NO FRAMES</B></A>  &nbsp;
 277 &nbsp;<SCRIPT type="text/javascript">
 278   <!--
 279   if(window==top) {
 280     document.writeln('<A HREF="../../../../../allclasses-noframe.html"><B>All Classes</B></A>');
 281   }
 282   //-->
 283 </SCRIPT>
 284 <NOSCRIPT>
 285   <A HREF="../../../../../allclasses-noframe.html"><B>All Classes</B></A>
 286 </NOSCRIPT>
 287
 288
 289 </FONT></TD>
 290 </TR>
 291 <TR>
 292 <TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">
 293   SUMMARY:&nbsp;NESTED&nbsp;|&nbsp;FIELD&nbsp;|&nbsp;<A HREF="#constructor_summary">CONSTR</A>&nbsp;|&nbsp;<A HREF="#method_summary">METHOD</A></FONT></TD>
 294 <TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">
 295 DETAIL:&nbsp;FIELD&nbsp;|&nbsp;<A HREF="#constructor_detail">CONSTR</A>&nbsp;|&nbsp;<A HREF="#method_detail">METHOD</A></FONT></TD>
 296 </TR>
 297 </TABLE>
 298 <A NAME="skip-navbar_bottom"></A>
 299 <!-- ======== END OF BOTTOM NAVBAR ======= -->
 300
 301 <HR>
 302 Copyright © 2001-2008 <a href="http://www.apache.org/">The Apache Software Foundation</a>. All Rights Reserved.
 303 </BODY>
 304 </HTML>