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EnvironmentFilter
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org.simpleframework.xml.filter</FONT>
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Class EnvironmentFilter</H2>
<PRE>
java.lang.Object
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.simpleframework.xml.filter.EnvironmentFilter</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../org/simpleframework/xml/filter/Filter.html" title="interface in org.simpleframework.xml.filter">Filter</A></DD>
</DL>
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<DT><PRE>public class <B>EnvironmentFilter</B><DT>extends java.lang.Object<DT>implements <A HREF="../../../../org/simpleframework/xml/filter/Filter.html" title="interface in org.simpleframework.xml.filter">Filter</A></DL>
</PRE>
<P>
The <code>EnvironmentFilter</code> object is used to provide a
filter that will replace the specified values with an environment
variable from the OS. This can be given a delegate filter which
can be used to resolve replacements should the value requested
not match an environment variable from the OS.
<P>
<P>
<DL>
<DT><B>Author:</B></DT>
<DD>Niall Gallagher</DD>
</DL>
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<TD><CODE><B><A HREF="../../../../org/simpleframework/xml/filter/EnvironmentFilter.html#EnvironmentFilter()">EnvironmentFilter</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Constructor for the <code>EnvironmentFilter</code> object.</TD>
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<TD><CODE><B><A HREF="../../../../org/simpleframework/xml/filter/EnvironmentFilter.html#EnvironmentFilter(org.simpleframework.xml.filter.Filter)">EnvironmentFilter</A></B>(<A HREF="../../../../org/simpleframework/xml/filter/Filter.html" title="interface in org.simpleframework.xml.filter">Filter</A>&nbsp;filter)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Constructor for the <code>EnvironmentFilter</code> object.</TD>
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<CODE>&nbsp;java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/simpleframework/xml/filter/EnvironmentFilter.html#replace(java.lang.String)">replace</A></B>(java.lang.String&nbsp;text)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Replaces the text provided with the value resolved from the
environment variables.</TD>
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<A NAME="EnvironmentFilter()"><!-- --></A><H3>
EnvironmentFilter</H3>
<PRE>
public <B>EnvironmentFilter</B>()</PRE>
<DL>
<DD>Constructor for the <code>EnvironmentFilter</code> object. This
creates a filter that resolves replacements using environment
variables. Should the environment variables not contain the
requested mapping this will return a null value.
<P>
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<A NAME="EnvironmentFilter(org.simpleframework.xml.filter.Filter)"><!-- --></A><H3>
EnvironmentFilter</H3>
<PRE>
public <B>EnvironmentFilter</B>(<A HREF="../../../../org/simpleframework/xml/filter/Filter.html" title="interface in org.simpleframework.xml.filter">Filter</A>&nbsp;filter)</PRE>
<DL>
<DD>Constructor for the <code>EnvironmentFilter</code> object. This
creates a filter that resolves replacements using environment
variables. Should the environment variables not contain the
requested mapping this will delegate to the specified filter.
<P>
<DL>
<DT><B>Parameters:</B><DD><CODE>filter</CODE> - the filter delegated to should resolution fail</DL>
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<A NAME="replace(java.lang.String)"><!-- --></A><H3>
replace</H3>
<PRE>
public java.lang.String <B>replace</B>(java.lang.String&nbsp;text)</PRE>
<DL>
<DD>Replaces the text provided with the value resolved from the
environment variables. If the environment variables fail this
will delegate to the specified <code>Filter</code> if it is
not a null object. If no match is found a null is returned.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/simpleframework/xml/filter/Filter.html#replace(java.lang.String)">replace</A></CODE> in interface <CODE><A HREF="../../../../org/simpleframework/xml/filter/Filter.html" title="interface in org.simpleframework.xml.filter">Filter</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>text</CODE> - this is the text value to be replaced
<DT><B>Returns:</B><DD>this will return the replacement text resolved</DL>
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