[jdom-interest] Fast Factory
Jason Hunter
jhunter at acm.org
Thu May 22 20:27:29 PDT 2003
In one of Brad's experiments he created the following and sent it
around. It's a FastFactory that builds content directly without the
Verifier step acting on the contents. I know Rusty will probably hate
such an option since he doesn't trust parsers, but if you trust your
parser and want a speed boost, isn't it reasonable to use something like
this?
One of our (few!) remaining TODO items is to consider moving JDOMFactory
into org.jdom. ISTR the main reason I added that item was to enable
this. The FastFactory needs access to the protected fields of the
content classes.
So to scratch off this item, we need to figure out if we want to pursue
this. The code's probably outdated, but the idea would still work.
Thoughts?
-jh-
Bradley S. Huffman wrote:
> /*--
>
> $Id: FastFactory.java,v 1.6 2002/03/12 07:57:06 jhunter Exp $
>
> Copyright (C) 2000 Brett McLaughlin & Jason Hunter.
> All rights reserved.
>
> Redistribution and use in source and binary forms, with or without
> modification, are permitted provided that the following conditions
> are met:
>
> 1. Redistributions of source code must retain the above copyright
> notice, this list of conditions, and the following disclaimer.
>
> 2. Redistributions in binary form must reproduce the above copyright
> notice, this list of conditions, and the disclaimer that follows
> these conditions in the documentation and/or other materials
> provided with the distribution.
>
> 3. The name "JDOM" must not be used to endorse or promote products
> derived from this software without prior written permission. For
> written permission, please contact license at jdom.org.
>
> 4. Products derived from this software may not be called "JDOM", nor
> may "JDOM" appear in their name, without prior written permission
> from the JDOM Project Management (pm at jdom.org).
>
> In addition, we request (but do not require) that you include in the
> end-user documentation provided with the redistribution and/or in the
> software itself an acknowledgement equivalent to the following:
> "This product includes software developed by the
> JDOM Project (http://www.jdom.org/)."
> Alternatively, the acknowledgment may be graphical using the logos
> available at http://www.jdom.org/images/logos.
>
> THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
> WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
> OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
> DISCLAIMED. IN NO EVENT SHALL THE JDOM AUTHORS OR THE PROJECT
> CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
> SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
> LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
> USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
> ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
> OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
> OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
> SUCH DAMAGE.
>
> This software consists of voluntary contributions made by many
> individuals on behalf of the JDOM Project and was originally
> created by Brett McLaughlin <brett at jdom.org> and
> Jason Hunter <jhunter at jdom.org>. For more information on the
> JDOM Project, please see <http://www.jdom.org/>.
>
> */
>
> package org.jdom;
>
> import java.util.*;
> import org.jdom.input.JDOMFactory;
>
> /**
> * <p>
> * <code>FastFactory</code> creates the standard top-level JDOM classes
> * (Element, Document, Comment, etc) as fast as possible with no validity
> * checks.
> * </p>
> *
> * @author Ken Rune Holland
> * @author Phil Nelson
> * @author Bradley S. Huffman
> * @version $Revision: 1.6 $, $Date: 2002/03/12 07:57:06 $
> */
> public class FastFactory implements JDOMFactory {
>
> private static final String CVS_ID =
> "@(#) $RCSfile: FastFactory.java,v $ $Revision: 1.6 $ $Date: 2002/03/12 07:57:06 $ $Name: jdom_1_0_b8 $";
>
> public FastFactory() { }
>
> public Attribute attribute(String name, String value, int type,
> Namespace namespace) {
> Attribute attribute = new Attribute();
> attribute.name = name;
> attribute.value = value;
> attribute.type = type;
> attribute.namespace = namespace;
> return attribute;
> }
>
> public Attribute attribute(String name, String value, Namespace namespace) {
> Attribute attribute = new Attribute();
> attribute.name = name;
> attribute.value = value;
> attribute.type = Attribute.UNDECLARED_ATTRIBUTE;
> attribute.namespace = namespace;
> return attribute;
> }
>
> public Attribute attribute(String name, String value) {
> Attribute attribute = new Attribute();
> attribute.name = name;
> attribute.value = value;
> attribute.type = Attribute.UNDECLARED_ATTRIBUTE;
> attribute.namespace = Namespace.NO_NAMESPACE;
> return attribute;
> }
>
> public Attribute attribute(String name, String value, int type) {
> Attribute attribute = new Attribute();
> attribute.name = name;
> attribute.value = value;
> attribute.type = type;
> attribute.namespace = Namespace.NO_NAMESPACE;
> return attribute;
> }
>
> public CDATA cdata(String value) {
> CDATA cdata = new CDATA();
> cdata.value = value;
> return cdata;
> }
>
> public Text text(String value) {
> Text text = new Text();
> text.value = value;
> return text;
> }
>
>
> public Comment comment(String value) {
> Comment comment = new Comment();
> comment.text = value;
> return comment;
> }
>
> public DocType docType(String elementName,
> String publicID, String systemID) {
> DocType docType = new DocType();
> docType.elementName = elementName;
> docType.publicID = publicID;
> docType.systemID = systemID;
> return docType;
> }
>
> public DocType docType(String elementName, String systemID) {
> DocType docType = new DocType();
> docType.elementName = elementName;
> docType.systemID = systemID;
> return docType;
> }
>
> public DocType docType(String elementName) {
> DocType docType = new DocType();
> docType.elementName = elementName;
> return docType;
> }
>
> public Document document(Element rootElement, DocType docType) {
> Document document = new Document(rootElement);
> document.docType = docType;
> return document;
> }
>
> public Document document(Element rootElement) {
> Document document = new Document(rootElement);
> return document;
> }
>
> public Element element(String name, Namespace namespace) {
> Element element = new Element();
> element.name = name;
> element.namespace = namespace;
> return element;
> }
>
> public Element element(String name) {
> Element element = new Element();
> element.name = name;
> element.namespace = Namespace.NO_NAMESPACE;
> return element;
> }
>
> public Element element(String name, String uri) {
> Element element = new Element();
> element.name = name;
> element.namespace = Namespace.getNamespace("", uri);
> return element;
> }
>
> public Element element(String name, String prefix, String uri) {
> Element element = new Element();
> element.name = name;
> element.namespace = Namespace.getNamespace(prefix, uri);
> return element;
> }
>
> public ProcessingInstruction processingInstruction(String target,
> Map data) {
> ProcessingInstruction pi = new ProcessingInstruction();
> pi.target = target;
> pi.mapData = data;
> return pi;
> }
>
> public ProcessingInstruction processingInstruction(String target,
> String data) {
> ProcessingInstruction pi = new ProcessingInstruction();
> pi.target = target;
> pi.rawData = data;
> return pi;
> }
>
> public EntityRef entityRef(String name) {
> EntityRef entity = new EntityRef();
> entity.name = name;
> return entity;
> }
>
> public EntityRef entityRef(String name, String publicID, String systemID) {
> EntityRef entity = new EntityRef();
> entity.name = name;
> entity.publicID = publicID;
> entity.systemID = systemID;
> return entity;
> }
> }
>
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