Java SGML to XML conversion? - java

Does anyone know of a method, or library, to convert SGML into XML?
EDIT: For clarification, I have to do the conversion in Java, and I cannot use the SP parser or the related SX tool.


It seems that the general consensus is that there are no existing libraries for doing SGML work in Java. Certainly after several days of fruitlessly searching Google, and asking this question here, I have found no resources on this subject.


The answer is not always that simple, as it depends on the sgml DTD. I haven't actually found a general SGML parser in Java at all, but this article uses SP which includes a converter.


See http://jclark.com/sp/sx.htm for the SX converter from SGML to XML in the SP package.


There is the mlParser, but I'm having a hard time trying to locate it: http://www.balisage.net/Proceedings/vol1/html/Smith01/BalisageVol1-Smith01.html


There is no api for parsing SGML using Java at this time. There also isn't any api or library for converting SGML to XML and then parsing it using Java. With the status of SGML being supplanted by XML for all the projects I've worked on until now, I don't think there will every be any work done in this area, but that is only a guess.
Here is some open source code code from a University that does it, however I haven't tried it and you would have to search to find the other dependent classes. I believe the only viable solution in Java would require Regular Expressions.
Also, here is a link for public SGML/XML software.

Related

Use of ANTLR to multiple Parsing

What I need : Find a way to parse a ttcn-3 source code or a ttcn-3 schema into XML or JAVA
I have looked on the internet to see if I can find an IDE or a program that helps me to parse a code in a ttcn-3 language and I have found the ANTLR website. Another tool for language recognition so I would like to know if someone has used ANTLR or knows if it can help me to parse.

Definitely yes. I know many people who have used ANTLR (including myself) and it can be used to solve your problem and parse your language if you can find a grammar for it.

Custom StAX Parser for XML using javax wrappers

Custom StAX Parser for XML using javax wrappers
How do you do this; or at least good suggestions on the right documentation / examples / tutorials?
I've been using the javax.xml.stream package to process XML files but the application is begging for some "non-standard XML" (easy to understand what the means if you're not picky). I can write the parser, but I want this to be configurable: so that the app continues to use the same XML processing code except for changing the parser as needed.
The hard part at this point is finding concrete info on how this is done. Documentation speaks of, for example, configuring the parameters of SAXParserFactory and such, but I haven't found specific documentation or examples. I've even looked into some existing StAX source code. Need some good hints / guidance on how this is done in order to move forward.

According to the documentation, you can't. You can use one of three approved parsers. Anything else will result in an error.

A library to produce canonical XML in JAVA 5?

I'm using org.apache.xml.security.c14n.Canonicalizer which was recommended to me here: Sort xml attributes for pretty print using javax.xml.transform.Transformer. I will need it to run in Java 5 though.. it doesn't seem to work.
Are there any options?

XOM has a Canonicalizer which will do this.
In addition to being a very good general-purpose XML DOM library, it's a much more lightweight solution to canonicalization than your XSLT-based solution.

Intellij parsing java code

I want to use a math-expression parser of java code. In particular I would like to convert a math-expression given as String to an abstract syntax tree consisted of separate nodes.
Is there anyone to recommend me a relevant open source tool?
If no, how do you reckon the possibility to exploit Intellij source code to do this work?
Which classes are responsible for code parsing and analysis?
Are they included in idea.jar? How can I easily infiltrate their functionality (methods etc)?
I am speaking exclusively for Intellij.

Take a look at MVEL library.

If you only want the results of the math-expression you should revise the question and the answer i selected months ago:
Java 1.5: mathematical formula parser
Brieff description: use the java integration with dinamyc languajes like javascript to let them do the work for you

I would not use IntelliJ, as much as I love it.
If you need an AST, look no further than ANTLR. If you can write a grammar for your equations, ANTLR can generate a lexer/parser to create it for you.

What is best practice in converting XML to Java object?

I need to convert XML data to Java objects. What would be best practice to convert this XML data to object?
Idea is to fetch data via a web service (it doesn't use WSDL, just HTTP GET queries, so I cannot use any framework) and answers are in XML. What would be best practice to handle this situation?

JAXB is a standard API for doing this: http://java.sun.com/developer/technicalArticles/WebServices/jaxb/

Have a look at XStream. It might not be the quickest, but it is one of the most user friendly and straightforward converters in Java, especially if your model is not complex.

For a JMS project we were marshalling and unmarshalling (going from java to xml and xml to java) XML embedded in TextMessages (string property). We tried JAXB, Jibx, and XMLBeans. We found that XMLBeans worked best for us. Fast, easily configurable, good documentation, and easy Maven integration.

I have used and will continue to use JDOM -> www.jdom.org

Another option is a Sax Parser. It is procedural - i.e. a visitor pattern - but if the xml is fairly lightweight, (and even medium weight) I have found it to be very useful for this.

JAXB API which comes in Java(In built).

I have used JIBX in MQ module. It works very well. Ant config is simple. Used Xsd2Jibx converter to generate the binding files and Java beans from XML schema. Marshalling and un-marshalling allow to specify character-set parameter. It was useful in my project to handle custom character-set. But I found an issue in the binding compiler. If the Java bean has lengthier path name, it generates class file with lengthier file name which will cause issue in Windows XP(it has a maximum file length limit).
I haven't used other APIs. So I am not trying to compare with others. If you decided to use JIBX, I hope this will be helpful.
More details, please refer JIBX website

I've used XStream as well, it is easy to use and customizable. You can add your own custom converters and that was very handy for me...

So surprised more people have not mentioned Jibx. Amazing lib and i think a lot simpler to use than Jaxb. Performance is also fab!

For this you can also consider apache's bitwixt and simple framework for xml

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