Have you tried betwixt?
--
dIon Gillard, Multitask Consulting
Blog: http://www.freeroller.net/page/dion/Weblog
Work: http://www.multitask.com.au
Yunfeng Hou <[EMAIL PROTECTED]> wrote on 30/01/2003 09:22:25 PM:
> Commons digester is very powerful, and it is rule
> centered. It makes digester very useful, but at the
> same time, not a easy job to write the rules. To deal
> with a complex XML file, we will have to write many
> rules for each class and it's properties, methods. I
> feel it not very flexible and hard to mantain. What I
> need is the following:
> 1. Using a xml config file to define the relationship
> between Java Class and XML element. (XML rule is a
> step forward, but not enough)
> 2. As simple as castor xml mapping, but still have the
> power of digester.
>
> With the tool I write myself, marshal an XML document
> to a java object could be much easier. Here's the
> sample.
> I have an mapping file digester.xml.
> =============================================
> <mapping>
> <include>digester_inc.xml</include>
>
> <class name="net.yunfeng.digester.config.MappingInfo"
> xmlName="mapping">
> <object xmlName="class"
> type="net.yunfeng.digester.config.ClassInfo"
> method="addClass"/>
> <method name="addInclude" xmlName="include"/>
> </class>
>
> <class name="net.yunfeng.digester.config.ClassInfo"
> xmlName="class">
> <object
> type="net.yunfeng.digester.config.PropertyInfo"
> method="addProperty"/>
> <object type =
> "net.yunfeng.digester.config.MethodInfo"
> method="addMethod"/>
> <object
> type="net.yunfeng.digester.config.ObjectInfo"
> method="addObject"/>
> </class>
>
>
> <class name="net.yunfeng.digester.config.Methodnfo"
> xmlName="method">
> <object type="net.yunfeng.digester.config.ParamInfo"
> method="addParam"/>
> </class>
>
>
> </mapping>
> ===============================================
>
> and digester_inc.xml
> ===============================================
> <mapping>
> <class
> name="net.yunfeng.digester.config.PropertyInfo"
> xmlName="property"/>
> <class name="net.yunfeng.digester.config.ObjectInfo"
> xmlName="object"/>
> <class name="net.yunfeng.digester.config.ParamInfo"
> xmlName="param"/>
> </mapping>
> =================================================
> I can easily read these two files into my config
> classes( I only list two of them)
>
> MappingInfo.java
> =================================================
> public class MappingInfo {
>
> private ArrayList classes = new ArrayList();
> private ArrayList includes = new ArrayList();
> // and the accessors of these two
>
> public void addClass(ClassInfo classInfo) {
> classes.add(classInfo);
> }
>
> public void addInclude(String include) {
> includes.add(include);
> }
> }
> ================================================
> MethodInfo.java
> ================================================
> public class MethodInfo {
>
> private String name;
> private String xmlName;
> private ArrayList params = new ArrayList();
> // and their accessors
>
> public void addParam(ParamInfo param) {
> params.add(param);
> }
> }
> ================================================
>
> The code to digest it is:
> ================================================
> URL file =
> DigesterHelper.class.getClassLoader().
> getResource("net/yunfeng/digester/digester.xml");
> DigesterHelper helper = new DigesterHelper(file);
> MappingInfo mappingInfo = (MappingInfo)
> helper.load(file, MappingInfo.class);
>
> ================================================
> The first statement is get a mapping file;
> second statement is create a helper object and have it
> load the mapping file to later use;
> the last statement is to digester an xml file into an
> specified java class. In this case, it happens to be
> the same of the mapping file. :-)
>
> Please note that you do not need to specify all the
> properties of a class within the mapping file. The
> tool will automatically add rules for all properties
> of a class. So if the property has the same name as
> the element name of XML, you can just leave the tool
> handle it.
>
> If you think it worth putting it into the code base,
> will be more than happy to help.
>
> Yunfeng Hou
>
>
> _________________________________________________________
> Do You Yahoo!?
> "�Ż����մ�ת�̾�ϲ���� ���ֽ��պ�������"
> http://cn.promo.yahoo.com/holiday/
> ----- Message from Yunfeng Hou <[EMAIL PROTECTED]> on Thu, 30 Jan
> 2003 18:13:31 +0800 (CST) -----
>
> To:
>
> [EMAIL PROTECTED]
>
> Subject:
>
> enhancement to digester
>
> Commons digester is very powerful, and it is rule
> centered. It makes digester very useful, but at the
> same time, not a easy job to write the rules. To deal
> with a complex XML file, we will have to write many
> rules for each class and it's properties, methods. I
> feel it not very flexible and hard to mantain. What I
> need is the following:
> 1. Using a xml config file to define the relationship
> between Java Class and XML element. (XML rule is a
> step forward, but not enough)
> 2. As simple as castor xml mapping, but still have the
> power of digester.
>
> With the tool I write myself, marshal an XML document
> to a java object could be much easier. Here's the
> sample.
> I have an mapping file digester.xml.
> =============================================
> <mapping>
> <include>digester_inc.xml</include>
>
> <class name="net.yunfeng.digester.config.MappingInfo"
> xmlName="mapping">
> <object xmlName="class"
> type="net.yunfeng.digester.config.ClassInfo"
> method="addClass"/>
> <method name="addInclude" xmlName="include"/>
> </class>
>
> <class name="net.yunfeng.digester.config.ClassInfo"
> xmlName="class">
> <object
> type="net.yunfeng.digester.config.PropertyInfo"
> method="addProperty"/>
> <object type =
> "net.yunfeng.digester.config.MethodInfo"
> method="addMethod"/>
> <object
> type="net.yunfeng.digester.config.ObjectInfo"
> method="addObject"/>
> </class>
>
>
> <class name="net.yunfeng.digester.config.Methodnfo"
> xmlName="method">
> <object type="net.yunfeng.digester.config.ParamInfo"
> method="addParam"/>
> </class>
>
>
> </mapping>
> ===============================================
>
> and digester_inc.xml
> ===============================================
> <mapping>
> <class
> name="net.yunfeng.digester.config.PropertyInfo"
> xmlName="property"/>
> <class name="net.yunfeng.digester.config.ObjectInfo"
> xmlName="object"/>
> <class name="net.yunfeng.digester.config.ParamInfo"
> xmlName="param"/>
> </mapping>
> =================================================
> I can easily read these two files into my config
> classes( I only list two of them)
>
> MappingInfo.java
> =================================================
> public class MappingInfo {
>
> private ArrayList classes = new ArrayList();
> private ArrayList includes = new ArrayList();
> // and the accessors of these two
>
> public void addClass(ClassInfo classInfo) {
> classes.add(classInfo);
> }
>
> public void addInclude(String include) {
> includes.add(include);
> }
> }
> ================================================
> MethodInfo.java
> ================================================
> public class MethodInfo {
>
> private String name;
> private String xmlName;
> private ArrayList params = new ArrayList();
> // and their accessors
>
> public void addParam(ParamInfo param) {
> params.add(param);
> }
> }
> ================================================
>
> The code to digest it is:
> ================================================
> URL file =
> DigesterHelper.class.getClassLoader().
> getResource("net/yunfeng/digester/digester.xml");
> DigesterHelper helper = new DigesterHelper(file);
> MappingInfo mappingInfo = (MappingInfo)
> helper.load(file, MappingInfo.class);
>
> ================================================
> The first statement is get a mapping file;
> second statement is create a helper object and have it
> load the mapping file to later use;
> the last statement is to digester an xml file into an
> specified java class. In this case, it happens to be
> the same of the mapping file. :-)
>
> If you think it worth putting it into the code base,
> will be more than happy to help.
>
> Yunfeng Hou
>
>
>
>
>
>
>
> _________________________________________________________
> Do You Yahoo!?
> "�Ż����մ�ת�̾�ϲ���� ���ֽ��պ�������"
> http://cn.promo.yahoo.com/holiday/[attachment "digester.zip" deleted
> by dIon Gillard/Multitask Consulting/AU]
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