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* Copyright 2004 The Apache Software Foundation
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* you may not use this file except in compliance with the License.
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package org.apache.tomcat.util.digester;
import org.xml.sax.Attributes;
/**
* Concrete implementations of this class implement actions to be taken when
* a corresponding nested pattern of XML elements has been matched.
*/
public abstract class Rule {
// ----------------------------------------------------------- Constructors
/**
* Constructor sets the associated Digester.
*
* @param digester The digester with which this rule is associated
* @deprecated The digester instance is now set in the {@link Digester#addRule} method. Use {@link #Rule()} instead.
*/
public Rule(Digester digester) {
super();
setDigester(digester);
}
/**
* Base constructor.
* Now the digester will be set when the rule is added.
*/
public Rule() {}
// ----------------------------------------------------- Instance Variables
/**
* The Digester with which this Rule is associated.
*/
protected Digester digester = null;
/**
* The namespace URI for which this Rule is relevant, if any.
*/
protected String namespaceURI = null;
// ------------------------------------------------------------- Properties
/**
* Return the Digester with which this Rule is associated.
*/
public Digester getDigester() {
return (this.digester);
}
/**
* Set the Digester with which this Rule is associated.
*/
public void setDigester(Digester digester) {
this.digester = digester;
}
/**
* Return the namespace URI for which this Rule is relevant, if any.
*/
public String getNamespaceURI() {
return (this.namespaceURI);
}
/**
* Set the namespace URI for which this Rule is relevant, if any.
*
* @param namespaceURI Namespace URI for which this Rule is relevant,
* or null to match independent of namespace.
*/
public void setNamespaceURI(String namespaceURI) {
this.namespaceURI = namespaceURI;
}
// --------------------------------------------------------- Public Methods
/**
* This method is called when the beginning of a matching XML element
* is encountered.
*
* @param attributes The attribute list of this element
* @deprecated Use the {@link #begin(String,String,Attributes) begin}
* method with namespace and name
* parameters instead.
*/
public void begin(Attributes attributes) throws Exception {
; // The default implementation does nothing
}
/**
* This method is called when the beginning of a matching XML element
* is encountered. The default implementation delegates to the deprecated
* method {@link #begin(Attributes) begin} without the
* namespace and name parameters, to retain
* backwards compatibility.
*
* @param namespace the namespace URI of the matching element, or an
* empty string if the parser is not namespace aware or the element has
* no namespace
* @param name the local name if the parser is namespace aware, or just
* the element name otherwise
* @param attributes The attribute list of this element
* @since Digester 1.4
*/
public void begin(String namespace, String name, Attributes attributes)
throws Exception {
begin(attributes);
}
/**
* This method is called when the body of a matching XML element
* is encountered. If the element has no body, this method is
* not called at all.
*
* @param text The text of the body of this element
* @deprecated Use the {@link #body(String,String,String) body} method
* with namespace and name parameters
* instead.
*/
public void body(String text) throws Exception {
; // The default implementation does nothing
}
/**
* This method is called when the body of a matching XML element is
* encountered. If the element has no body, this method is not called at
* all. The default implementation delegates to the deprecated method
* {@link #body(String) body} without the namespace and
* name parameters, to retain backwards compatibility.
*
* @param namespace the namespace URI of the matching element, or an
* empty string if the parser is not namespace aware or the element has
* no namespace
* @param name the local name if the parser is namespace aware, or just
* the element name otherwise
* @param text The text of the body of this element
* @since Digester 1.4
*/
public void body(String namespace, String name, String text)
throws Exception {
body(text);
}
/**
* This method is called when the end of a matching XML element
* is encountered.
*
* @deprecated Use the {@link #end(String,String) end} method with
* namespace and name parameters instead.
*/
public void end() throws Exception {
; // The default implementation does nothing
}
/**
* This method is called when the end of a matching XML element
* is encountered. The default implementation delegates to the deprecated
* method {@link #end end} without the
* namespace and name parameters, to retain
* backwards compatibility.
*
* @param namespace the namespace URI of the matching element, or an
* empty string if the parser is not namespace aware or the element has
* no namespace
* @param name the local name if the parser is namespace aware, or just
* the element name otherwise
* @since Digester 1.4
*/
public void end(String namespace, String name)
throws Exception {
end();
}
/**
* This method is called after all parsing methods have been
* called, to allow Rules to remove temporary data.
*/
public void finish() throws Exception {
; // The default implementation does nothing
}
}