[Hibernate Search] Indexing and null values

fabreax · **Posted:** Mon Jun 11, 2007 6:01 am

Hello,

I have a new problem with Indexing and null values.

I have an "Entite" class with a list of "Document" called "documents".

When I insert a new Document (without null values except for id field) and add it to an Entite, I have good index files :

But if one field of the inserted Document is null, all fields are null :

I want to index an object with empty fields. Is it possible ?

Thank you.

emmanuel · **Posted:** Mon Jun 11, 2007 7:30 pm

It should be possible, can you create a JIRA issue with a test case?

fabreax · **Posted:** Tue Jun 12, 2007 4:58 am

emmanuel wrote:

It should be possible, can you create a JIRA issue with a test case?

Yes it's possible. When I was creating a unit test class, I found where is the problem : FieldBridge !

For exemple, when we have a "Document" class with the field :

Quote:

@Field(index=Index.TOKENIZED, store=Store.YES)
@FieldBridge(impl = PaddedIntegerBridge.class)
private Integer largeur;

And we create a new "Document" object with largeur = null, no index file for this object was created.

This is my PaddedIntegerBridge class :

Quote:

public class PaddedIntegerBridge implements StringBridge
{
private static int PADDING = 10;

public String objectToString(Object object) {
return integerToString((Integer) object);
}

public static String integerToString(int entier)
{
String rawInteger = ""+entier;
if (rawInteger.length() > PADDING)
throw new RuntimeException("Try to pad on a number too big");

StringBuilder paddedInteger = new StringBuilder();
for (int padIndex = rawInteger.length(); padIndex < PADDING; padIndex++ )
{
paddedInteger.append('0');
}

return paddedInteger.append( rawInteger ).toString();
}
}

fabreax · **Posted:** Tue Jun 12, 2007 5:15 am

The solution is to test if the object is null, and then return null if it is :

Quote:

public String objectToString(Object object) {
if(object == null) return null;
return integerToString((Integer) object);
}

But I think the test should be in HSearch, because it's difficult to know why there is no data in indexes.

emmanuel · **Posted:** Wed Jun 13, 2007 3:01 pm

An autoboxing exception should have been raised somewhere, I guess. It's weird that you don't see it.