I am generating POJO using the following code
My aim is to access the fields length , precision,null /not null , Is primary key check in the ftl file.

I have access to the pojo .Now how do i get to the above properties?

Note : Iam able to do the following

pojo.getAllPropertiesIterator()

<#foreach field in pojo.getAllPropertiesIterator()>
field.getColumnIterator()

<#foreach columnMeta in field.getColumnIterator()>
columnMeta.getLength()

But this breaks

columnMeta.getPrecision() .

Can you please explain this .Thanks

import org.hibernate.cfg.Configuration;
import org.hibernate.tool.hbm2x.TemplateProducer;
import org.hibernate.tool.hbm2x.pojo.POJOClass;

Public class HibernateAllCodeExporter extends HibernateCodeExporter
{
private File outputDirLoc;

public HibernateAllCodeExporter()
{
super();
}

public HibernateAllCodeExporter(
Configuration cfg_,
File outputdir_)
{
super(cfg_, outputdir_);
}

@Override
protected void exportPOJO(
Map additionalContext_, POJOClass element_)
{
TemplateProducer producer = new TemplateProducer(getTemplateHelper(), getArtifactCollector());
additionalContext_.put("pojo", element_);
additionalContext_.put("clazz", element_.getDecoratedObject());
additionalContext_.put("fieldNaming", fieldNaming);
extraSettings.setExtraPropertiesPath(getExtraPropertiesPath());
additionalContext_.put("extraSettings", extraSettings);
additionalContext_.put("md5sum", md5sum);[/b]

You probably need to use column.columnSize or column.decimalDigits to get what you want. Look at the hibernate source for the ColumnMetaData class for more info.

Drew

when i try column.columnSize or column.decimalDigits i get freemarker error .
ColumnMetaData is part of org.hibernate.tool.hbm2ddl package.
What iam doing is generating POJO.


How do i get the Columns Meta data info similiar to org.hibernate.tool.hbm2ddl.ColumnMetadata ?


Appreciate your help!

I guess you'll have to explain what you mean when you say that column.getPrecision() breaks then. In the ftl files I normally access things like this column.precision and hibernate will use the getter method for precision to get me the value. Does it tell you that the property doesn't exist?

Every property in the Column class (sorry, I was thrown off by your naming :) ) should be available to you in the ftl files.

Drew

${columnMeta.precision} -->works well
if i do ${columnMeta.nullable} with & with out quote i get the following :

Expecting a string, date or number here, Expression columnMeta.nullable is instead a freemarker.ext.beans.BooleanModel
at freemarker.core.Expression.getStringValue(Expression.java:126)
at freemarker.core.Expression.getStringValue(Expression.java:93)
at freemarker.core.DollarVariable.accept(DollarVariable.java:76)
at freemarker.core.Environment.visit(Environment.java:196)
at freemarker.core.MixedContent.accept(MixedContent.java:92)
at freemarker.core.Environment.visit(Environment.java:196)
at freemarker.core.IteratorBlock$Context.runLoop(IteratorBlock.java:160)

Also for columnMeta.decimalDigits i get
freemarker.core.InvalidReferenceException: Expression columnMeta.decimalDigits i
s undefined on line 102, column 4 in codegen/template/GwtFormField.ftl.


can you paste your ftl file here and the code exporter class

You had the right idea with the column.precision. Ignore my comment about decimalDigits.

Since that's a restricted keyword in freemarker what I would do is something like this:

If you wanted to output nullable=false then you could put
<#if !column.nullable>
nullable=false
<#else>
nullable=true
</#if>

Referencing nullable in the if check works fine, it's just a problem when you try to access it with the ${} notation.

Drew

Super!! Nullable works great .

How do i deal with decimal precision..

Could be a version issue I think ..
Anyways thanks for the excellent support!!

Per math terms:

precision is the maximum number of digits so in the number 1234.56 the precision is 6

scale is the number of digits to the right of the decimal point so in the number 1234.56 scale is 2.

using column.precision should give you 6 and column.scale should give you 2. I believe column.scale is what you are looking for.

Drew

I was loking into this API

http://www.hibernate.org/hib_docs/v3/ap ... adata.html

where are you refering the API