[hibernate-issues] [Hibernate-JIRA] Created: (HSEARCH-682) DSL cannot handle fieldBridge for @IndexEmbedded fields

[Nick Fenwick (JIRA)]

DSL cannot handle fieldBridge for @IndexEmbedded fields
-------------------------------------------------------

                 Key: HSEARCH-682
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-682
             Project: Hibernate Search
          Issue Type: New Feature
          Components: engine
    Affects Versions: 3.3.0.Final
         Environment: Hibernate 3.6.0, HSearch 3.3.0, Mysql 5.1.52.
            Reporter: Nick Fenwick


Discussed in https://forum.hibernate.org/viewtopic.php?f=9&t=1009440, "Re: Correct to use ignoreFieldBridge for "subentity.field" DSL?".

I find I have to set ignoreFieldBridge when querying for a field indexed using @IndexEmbedded, i.e.:

{code}@Entity
class CategoryEntity {
   @Column(name="lft")
   @Field(name="left", index=Index.UN_TOKENIZED, store=Store.YES)
   @FieldBridge(impl=PadNumberBridge.class,
         params = { @Parameter(name="pad", value="4") }
   )
   private int left;
   ... same for 'right' ...
}

@Entity
class ItemEntity {
   @IndexedEmbedded(depth=1)
   private CategoryEntity category;
}{code}

results in fields for ItemEntity being stored in the Lucene index like:

{code}
category.left = 0004
category.right = 0012
{code}

To query for these, I cannot do:

{code}
qb.range().onField("category.left").above(4).createQuery()
{code}

I get an exception saying it doesn't know what FieldBridge to use for "category.left".  Instead, I can do:

{code}
qb.range().onField("category.left").ignoreFieldBridge().above(4).createQuery()
{code}

but the 'value' is no longer padded according to the FieldBridge that was specified in CategoryEntity for its 'left' attribute, I have to pass value as e.g. "0004".

It would be good to mention this situation in the documentation (5.1.2. "Building a Lucene query with the Hibernate Search query DSL"), at least to specify that it is/isn't supported, so that people attempting this kind of @IndexEmbedded mapping know how to safely build a query for such fields.

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira