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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN""http://www.w3.org/TR/REC-html40/loose.dtd">
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<TITLE>
PropertyMessageResources (Apache Struts API Documentation)
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org.apache.struts.util</FONT>
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Class PropertyMessageResources</H2>
<PRE>
java.lang.Object
  |
  +--<A HREF="../../../../org/apache/struts/util/MessageResources.html">org.apache.struts.util.MessageResources</A>
        |
        +--<B>org.apache.struts.util.PropertyMessageResources</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD>java.io.Serializable</DD>
</DL>
<HR>
<DL>
<DT>public class <B>PropertyMessageResources</B><DT>extends <A HREF="../../../../org/apache/struts/util/MessageResources.html">MessageResources</A></DL>

<P>
Concrete subclass of <code>MessageResources</code> that reads message keys
 and corresponding strings from named property resources in the same manner
 that <code>java.util.PropertyResourceBundle</code> does.  The
 <code>base</code> property defines the base property resource name, and
 must be specified.
 <p>
 <strong>IMPLEMENTATION NOTE</strong> - This class trades memory for
 speed by caching all messages located via generalizing the Locale under
 the original locale as well.
 This results in specific messages being stored in the message cache
 more than once, but improves response time on subsequent requests for
 the same locale + key combination.
<P>

<P>
<DL>
<DT><B>Version:</B></DT>
  <DD>$Revision: 1.1 $ $Date: 2003-08-22 09:43:31 +0100 (Fri, 22 Aug 2003) $</DD>
<DT><B>Author:</B></DT>
  <DD>Craig R. McClanahan, David Graham</DD>
<DT><B>See Also:</B><DD><A HREF="../../../../serialized-form.html" TARGET="org.apache.struts.util.PropertyMessageResources">Serialized Form</A></DL>
<HR>

<P>
<!-- ======== NESTED CLASS SUMMARY ======== -->


<!-- =========== FIELD SUMMARY =========== -->

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<B>Field Summary</B></FONT></TD>
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<CODE>protected &nbsp;java.util.HashMap</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/struts/util/PropertyMessageResources.html#locales">locales</A></B></CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The set of locale keys for which we have already loaded messages, keyed
 by the value calculated in <code>localeKey()</code>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected static&nbsp;org.apache.commons.logging.Log</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/struts/util/PropertyMessageResources.html#log">log</A></B></CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The <code>Log</code> instance for this class.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;java.util.HashMap</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/struts/util/PropertyMessageResources.html#messages">messages</A></B></CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The cache of messages we have accumulated over time, keyed by the
 value calculated in <code>messageKey()</code>.</TD>
</TR>
</TABLE>
&nbsp;<A NAME="fields_inherited_from_class_org.apache.struts.util.MessageResources"><!-- --></A>
<TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Fields inherited from class org.apache.struts.util.<A HREF="../../../../org/apache/struts/util/MessageResources.html">MessageResources</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../org/apache/struts/util/MessageResources.html#config">config</A>, <A HREF="../../../../org/apache/struts/util/MessageResources.html#defaultFactory">defaultFactory</A>, <A HREF="../../../../org/apache/struts/util/MessageResources.html#defaultLocale">defaultLocale</A>, <A HREF="../../../../org/apache/struts/util/MessageResources.html#factory">factory</A>, <A HREF="../../../../org/apache/struts/util/MessageResources.html#formats">formats</A>, <A HREF="../../../../org/apache/struts/util/MessageResources.html#returnNull">returnNull</A></CODE></TD>
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<!-- ======== CONSTRUCTOR SUMMARY ======== -->

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<TD><CODE><B><A HREF="../../../../org/apache/struts/util/PropertyMessageResources.html#PropertyMessageResources(org.apache.struts.util.MessageResourcesFactory, java.lang.String)">PropertyMessageResources</A></B>(<A HREF="../../../../org/apache/struts/util/MessageResourcesFactory.html">MessageResourcesFactory</A>&nbsp;factory,
                         java.lang.String&nbsp;config)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Construct a new PropertyMessageResources according to the
 specified parameters.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../../org/apache/struts/util/PropertyMessageResources.html#PropertyMessageResources(org.apache.struts.util.MessageResourcesFactory, java.lang.String, boolean)">PropertyMessageResources</A></B>(<A HREF="../../../../org/apache/struts/util/MessageResourcesFactory.html">MessageResourcesFactory</A>&nbsp;factory,
                         java.lang.String&nbsp;config,
                         boolean&nbsp;returnNull)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Construct a new PropertyMessageResources according to the
 specified parameters.</TD>
</TR>
</TABLE>
&nbsp;
<!-- ========== METHOD SUMMARY =========== -->

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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/struts/util/PropertyMessageResources.html#getMessage(java.util.Locale, java.lang.String)">getMessage</A></B>(java.util.Locale&nbsp;locale,
           java.lang.String&nbsp;key)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns a text message for the specified key, for the default Locale.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/struts/util/PropertyMessageResources.html#loadLocale(java.lang.String)">loadLocale</A></B>(java.lang.String&nbsp;localeKey)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Load the messages associated with the specified Locale key.</TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_org.apache.struts.util.MessageResources"><!-- --></A>
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<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from class org.apache.struts.util.<A HREF="../../../../org/apache/struts/util/MessageResources.html">MessageResources</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../org/apache/struts/util/MessageResources.html#escape(java.lang.String)">escape</A>, <A HREF="../../../../org/apache/struts/util/MessageResources.html#getConfig()">getConfig</A>, <A HREF="../../../../org/apache/struts/util/MessageResources.html#getFactory()">getFactory</A>, <A HREF="../../../../org/apache/struts/util/MessageResources.html#getMessage(java.util.Locale, java.lang.String, java.lang.Object)">getMessage</A>, <A HREF="../../../../org/apache/struts/util/MessageResources.html#getMessage(java.util.Locale, java.lang.String, java.lang.Object[])">getMessage</A>, <A HREF="../../../../org/apache/struts/util/MessageResources.html#getMessage(java.util.Locale, java.lang.String, java.lang.Object, java.lang.Object)">getMessage</A>, <A HREF="../../../../org/apache/struts/util/MessageResources.html#getMessage(java.util.Locale, java.lang.String, java.lang.Object, java.lang.Object, java.lang.Object)">getMessage</A>, <A HREF="../../../../org/apache/struts/util/MessageResources.html#getMessage(java.util.Locale, java.lang.String, java.lang.Object, java.lang.Object, java.lang.Object, java.lang.Object)">getMessage</A>, <A HREF="../../../../org/apache/struts/util/MessageResources.html#getMessage(java.lang.String)">getMessage</A>, <A HREF="../../../../org/apache/struts/util/MessageResources.html#getMessage(java.lang.String, java.lang.Object)">getMessage</A>, <A HREF="../../../../org/apache/struts/util/MessageResources.html#getMessage(java.lang.String, java.lang.Object[])">getMessage</A>, <A HREF="../../../../org/apache/struts/util/MessageResources.html#getMessage(java.lang.String, java.lang.Object, java.lang.Object)">getMessage</A>, <A HREF="../../../../org/apache/struts/util/MessageResources.html#getMessage(java.lang.String, java.lang.Object, java.lang.Object, java.lang.Object)">getMessage</A>, <A HREF="../../../../org/apache/struts/util/MessageResources.html#getMessage(java.lang.String, java.lang.Object, java.lang.Object, java.lang.Object, java.lang.Object)">getMessage</A>, <A HREF="../../../../org/apache/struts/util/MessageResources.html#getMessageResources(java.lang.String)">getMessageResources</A>, <A HREF="../../../../org/apache/struts/util/MessageResources.html#getReturnNull()">getReturnNull</A>, <A HREF="../../../../org/apache/struts/util/MessageResources.html#isPresent(java.util.Locale, java.lang.String)">isPresent</A>, <A HREF="../../../../org/apache/struts/util/MessageResources.html#isPresent(java.lang.String)">isPresent</A>, <A HREF="../../../../org/apache/struts/util/MessageResources.html#localeKey(java.util.Locale)">localeKey</A>, <A HREF="../../../../org/apache/struts/util/MessageResources.html#log(java.lang.String)">log</A>, <A HREF="../../../../org/apache/struts/util/MessageResources.html#log(java.lang.String, java.lang.Throwable)">log</A>, <A HREF="../../../../org/apache/struts/util/MessageResources.html#messageKey(java.util.Locale, java.lang.String)">messageKey</A>, <A HREF="../../../../org/apache/struts/util/MessageResources.html#messageKey(java.lang.String, java.lang.String)">messageKey</A>, <A HREF="../../../../org/apache/struts/util/MessageResources.html#setReturnNull(boolean)">setReturnNull</A></CODE></TD>
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&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from class java.lang.Object</B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
</TR>
</TABLE>
&nbsp;
<P>

<!-- ============ FIELD DETAIL =========== -->

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<A NAME="locales"><!-- --></A><H3>
locales</H3>
<PRE>
protected java.util.HashMap <B>locales</B></PRE>
<DL>
<DD>The set of locale keys for which we have already loaded messages, keyed
 by the value calculated in <code>localeKey()</code>.
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="log"><!-- --></A><H3>
log</H3>
<PRE>
protected static final org.apache.commons.logging.Log <B>log</B></PRE>
<DL>
<DD>The <code>Log</code> instance for this class.
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="messages"><!-- --></A><H3>
messages</H3>
<PRE>
protected java.util.HashMap <B>messages</B></PRE>
<DL>
<DD>The cache of messages we have accumulated over time, keyed by the
 value calculated in <code>messageKey()</code>.
<P>
<DL>
</DL>
</DL>

<!-- ========= CONSTRUCTOR DETAIL ======== -->

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<A NAME="PropertyMessageResources(org.apache.struts.util.MessageResourcesFactory, java.lang.String)"><!-- --></A><H3>
PropertyMessageResources</H3>
<PRE>
public <B>PropertyMessageResources</B>(<A HREF="../../../../org/apache/struts/util/MessageResourcesFactory.html">MessageResourcesFactory</A>&nbsp;factory,
                                java.lang.String&nbsp;config)</PRE>
<DL>
<DD>Construct a new PropertyMessageResources according to the
 specified parameters.
<P>
<DT><B>Parameters:</B><DD><CODE>factory</CODE> - The MessageResourcesFactory that created us<DD><CODE>config</CODE> - The configuration parameter for this MessageResources</DL>
<HR>

<A NAME="PropertyMessageResources(org.apache.struts.util.MessageResourcesFactory, java.lang.String, boolean)"><!-- --></A><H3>
PropertyMessageResources</H3>
<PRE>
public <B>PropertyMessageResources</B>(<A HREF="../../../../org/apache/struts/util/MessageResourcesFactory.html">MessageResourcesFactory</A>&nbsp;factory,
                                java.lang.String&nbsp;config,
                                boolean&nbsp;returnNull)</PRE>
<DL>
<DD>Construct a new PropertyMessageResources according to the
 specified parameters.
<P>
<DT><B>Parameters:</B><DD><CODE>factory</CODE> - The MessageResourcesFactory that created us<DD><CODE>config</CODE> - The configuration parameter for this MessageResources<DD><CODE>returnNull</CODE> - The returnNull property we should initialize with</DL>

<!-- ============ METHOD DETAIL ========== -->

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<B>Method Detail</B></FONT></TD>
</TR>
</TABLE>

<A NAME="getMessage(java.util.Locale, java.lang.String)"><!-- --></A><H3>
getMessage</H3>
<PRE>
public java.lang.String <B>getMessage</B>(java.util.Locale&nbsp;locale,
                                   java.lang.String&nbsp;key)</PRE>
<DL>
<DD>Returns a text message for the specified key, for the default Locale.
 A null string result will be returned by this method if no relevant
 message resource is found for this key or Locale, if the
 <code>returnNull</code> property is set.  Otherwise, an appropriate
 error message will be returned.
 <p>
 This method must be implemented by a concrete subclass.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/struts/util/MessageResources.html#getMessage(java.util.Locale, java.lang.String)">getMessage</A></CODE> in class <CODE><A HREF="../../../../org/apache/struts/util/MessageResources.html">MessageResources</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>locale</CODE> - The requested message Locale, or <code>null</code>
  for the system default Locale<DD><CODE>key</CODE> - The message key to look up
<DT><B>Returns:</B><DD>text message for the specified key and locale</DL>
</DD>
</DL>
<HR>

<A NAME="loadLocale(java.lang.String)"><!-- --></A><H3>
loadLocale</H3>
<PRE>
protected void <B>loadLocale</B>(java.lang.String&nbsp;localeKey)</PRE>
<DL>
<DD>Load the messages associated with the specified Locale key.  For this
 implementation, the <code>config</code> property should contain a fully
 qualified package and resource name, separated by periods, of a series
 of property resources to be loaded from the class loader that created
 this PropertyMessageResources instance.  This is exactly the same name
 format you would use when utilizing the
 <code>java.util.PropertyResourceBundle</code> class.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>localeKey</CODE> - Locale key for the messages to be retrieved</DL>
</DD>
</DL>
<!-- ========= END OF CLASS DATA ========= -->
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