Hi,
Attached is a rule which behaves like a cross between SetPropertiesRule
and BeanPropertySetterRule-with-trailing-wildcard-match.
point
x7/x
y8/y
/point
digester.addRule(point, new SetNestedPropertiesRule());
Note that the rule doesn't need to use ExtendedBaseRules with trailing
wildcard (which is very powerful but not very efficient). It is
configured with the pattern matching the parent element.
The implementation uses a trick developed for the plugins module:
inserting a decorator Rules object that performs custom matching to
detect the direct child elements.
Yes, this functionality can already be achieved with Digester, but this
is pretty efficient and convenient, and this configuration pattern is a
common one.
Opinions??
Regards,
Simon
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package org.apache.commons.digester;
import java.util.List;
import java.util.LinkedList;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.ListIterator;
import java.util.HashMap;
import java.beans.PropertyDescriptor;
import org.apache.commons.beanutils.BeanUtils;
import org.apache.commons.beanutils.DynaBean;
import org.apache.commons.beanutils.DynaProperty;
import org.apache.commons.beanutils.PropertyUtils;
import org.xml.sax.Attributes;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* pRule implementation that sets properties on the object at the top of the
* stack, based on child elements with names matching properties on that
* object./p
*
* pExample input that can be processed by this rule:/p
* pre
* [point]
* [x]7[/x]
* [y]9[/y]
* [/point]
* /pre
*
* pThis rule supports custom mapping of attribute names to property names.
* The default mapping for particular attributes can be overridden by using
* [EMAIL PROTECTED] #SetNestedPropertiesRule(String[] elementNames,
* String[] propertyNames)}.
* This allows child elements to be mapped to properties with different names.
* Certain elements can also be marked to be ignored./p
*
* p
* A very similar effect can be achieved using a combination of the
* BeanPropertySetterRule and the ExtendedBaseRules rules manager; this
* Rule, however, works fine with the default RulesBase rules manager./p
*
*
