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package org.apache.tomcat.util.digester;
import org.apache.catalina.LogFacade;
import org.glassfish.web.util.IntrospectionUtils;
import org.xml.sax.Attributes;
import java.util.logging.Level;
/**
* Rule implementation that sets an individual property on the object at the
* top of the stack, based on attributes with specified names.
*/
public class SetPropertyRule extends Rule {
// ----------------------------------------------------------- Constructors
/**
* Construct a "set property" rule with the specified name and value
* attributes.
*
* @param digester The digester with which this rule is associated
* @param name Name of the attribute that will contain the name of the
* property to be set
* @param value Name of the attribute that will contain the value to which
* the property should be set
*
* @deprecated The digester instance is now set in the {@link Digester#addRule} method.
* Use {@link #SetPropertyRule(String name, String value)} instead.
*/
public SetPropertyRule(Digester digester, String name, String value) {
this(name, value);
}
/**
* Construct a "set property" rule with the specified name and value
* attributes.
*
* @param name Name of the attribute that will contain the name of the
* property to be set
* @param value Name of the attribute that will contain the value to which
* the property should be set
*/
public SetPropertyRule(String name, String value) {
this.name = name;
this.value = value;
}
// ----------------------------------------------------- Instance Variables
/**
* The attribute that will contain the property name.
*/
protected String name = null;
/**
* The attribute that will contain the property value.
*/
protected String value = null;
// --------------------------------------------------------- Public Methods
/**
* Process the beginning of this element.
*
* @param attributes The attribute list of this element
*
* @exception NoSuchMethodException if the bean does not
* have a writeable property of the specified name
*/
public void begin(Attributes attributes) throws Exception {
// Identify the actual property name and value to be used
String actualName = null;
String actualValue = null;
for (int i = 0; i < attributes.getLength(); i++) {
String name = attributes.getLocalName(i);
if ("".equals(name)) {
name = attributes.getQName(i);
}
String value = attributes.getValue(i);
if (name.equals(this.name)) {
actualName = value;
} else if (name.equals(this.value)) {
actualValue = value;
}
}
// Get a reference to the top object
Object top = digester.peek();
// Log some debugging information
if (digester.log.isLoggable(Level.FINE)) {
digester.log.log(Level.FINE, "[SetPropertyRule]{" + digester.match +
"} Set " + top.getClass().getName() + " property " +
actualName + " to " + actualValue);
}
// Set the property (with conversion as necessary)
if (!digester.isFakeAttribute(top, actualName)
&& !IntrospectionUtils.setProperty(top, actualName, actualValue)
&& digester.getRulesValidation()) {
digester.log.log(Level.WARNING, LogFacade.PROPERTY_RULE_NOT_FIND_MATCHING_PROPERTY,
new Object[] {digester.match, name, value});
}
}
/**
* Render a printable version of this Rule.
*/
public String toString() {
StringBuilder sb = new StringBuilder("SetPropertyRule[");
sb.append("name=");
sb.append(name);
sb.append(", value=");
sb.append(value);
sb.append("]");
return (sb.toString());
}
}
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