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ObjectBasedValueSource (Plexus Interpolation API 1.11 API)
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org.codehaus.plexus.interpolation</FONT>
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Class ObjectBasedValueSource</H2>
<PRE>
java.lang.Object
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../org/codehaus/plexus/interpolation/AbstractValueSource.html" title="class in org.codehaus.plexus.interpolation">org.codehaus.plexus.interpolation.AbstractValueSource</A>
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.codehaus.plexus.interpolation.ObjectBasedValueSource</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../org/codehaus/plexus/interpolation/ValueSource.html" title="interface in org.codehaus.plexus.interpolation">ValueSource</A></DD>
</DL>
<HR>
<DL>
<DT><PRE>public class <B>ObjectBasedValueSource</B><DT>extends <A HREF="../../../../org/codehaus/plexus/interpolation/AbstractValueSource.html" title="class in org.codehaus.plexus.interpolation">AbstractValueSource</A></DL>
</PRE>
<P>
Wraps an object, providing reflective access to the object graph of which the
supplied object is the root. Expressions like 'child.name' will translate into
'rootObject.getChild().getName()' for non-boolean properties, and
'rootObject.getChild().isName()' for boolean properties.
<P>
<P>
<DL>
<DT><B>Version:</B></DT>
<DD>$Id: ObjectBasedValueSource.java 7717 2008-09-12 21:04:19Z jdcasey $</DD>
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<TD><CODE><B><A HREF="../../../../org/codehaus/plexus/interpolation/ObjectBasedValueSource.html#ObjectBasedValueSource(java.lang.Object)">ObjectBasedValueSource</A></B>(java.lang.Object root)</CODE>
<BR>
Construct a new value source, using the supplied object as the root from
which to start, and using expressions split at the dot ('.') to navigate
the object graph beneath this root.</TD>
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<CODE> java.lang.Object</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/codehaus/plexus/interpolation/ObjectBasedValueSource.html#getValue(java.lang.String)">getValue</A></B>(java.lang.String expression)</CODE>
<BR>
Split the expression into parts, tokenized on the dot ('.') character.</TD>
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<TH ALIGN="left"><B>Methods inherited from class org.codehaus.plexus.interpolation.<A HREF="../../../../org/codehaus/plexus/interpolation/AbstractValueSource.html" title="class in org.codehaus.plexus.interpolation">AbstractValueSource</A></B></TH>
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<TD><CODE><A HREF="../../../../org/codehaus/plexus/interpolation/AbstractValueSource.html#addFeedback(java.lang.String)">addFeedback</A>, <A HREF="../../../../org/codehaus/plexus/interpolation/AbstractValueSource.html#addFeedback(java.lang.String, java.lang.Throwable)">addFeedback</A>, <A HREF="../../../../org/codehaus/plexus/interpolation/AbstractValueSource.html#clearFeedback()">clearFeedback</A>, <A HREF="../../../../org/codehaus/plexus/interpolation/AbstractValueSource.html#getFeedback()">getFeedback</A></CODE></TD>
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<TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH>
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<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
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<A NAME="ObjectBasedValueSource(java.lang.Object)"><!-- --></A><H3>
ObjectBasedValueSource</H3>
<PRE>
public <B>ObjectBasedValueSource</B>(java.lang.Object root)</PRE>
<DL>
<DD>Construct a new value source, using the supplied object as the root from
which to start, and using expressions split at the dot ('.') to navigate
the object graph beneath this root.
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<A NAME="getValue(java.lang.String)"><!-- --></A><H3>
getValue</H3>
<PRE>
public java.lang.Object <B>getValue</B>(java.lang.String expression)</PRE>
<DL>
<DD>Split the expression into parts, tokenized on the dot ('.') character. Then,
starting at the root object contained in this value source, apply each part
to the object graph below this root, using either 'getXXX()' or 'isXXX()'
accessor types to resolve the value for each successive expression part.
Finally, return the result of the last expression part's resolution.
<br/>
<b>NOTE:</b> The object-graph nagivation actually takes place via the
<A HREF="../../../../org/codehaus/plexus/interpolation/reflection/ReflectionValueExtractor.html" title="class in org.codehaus.plexus.interpolation.reflection"><CODE>ReflectionValueExtractor</CODE></A> class.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>the value related to the expression, or null if not found.</DL>
</DD>
</DL>
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