[ http://opensource.atlassian.com/projects/hibernate/browse/HHH-2871?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Vlad Rechkalov updated HHH-2871:
--------------------------------
Attachment: SQLQueryParser.java
> can't specify property of the element in the collection
> -------------------------------------------------------
>
> Key: HHH-2871
> URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2871
> Project: Hibernate3
> Issue Type: Bug
> Components: query-sql
> Affects Versions: 3.2.5
> Reporter: Vlad Rechkalov
> Attachments: SQLQueryParser.java, SQLQueryParser.java
>
> Original Estimate: 5 minutes
> Remaining Estimate: 5 minutes
>
> In according to Hibernate documentation (topic 16.1.4.1. Alias and property references) collection properties can be specified a few ways:
> All properties of the the collection {[aliasname].*}
> All properties of the element in the collection {[aliasname].element.*}
> Property of the element in the collection {[aliasname].element.[propertyname]}
> But the last way doesn't work.
> Example:
> There are two entities: Program and Document. Program has one-to-many inverse collection of Documents.
> Program
> int getId()
> List<Document> getDocuments() // one-to-many inverse collection
> Document
> int getId()
> String getTitle()
> Program getParent() // many-to-one association
> Trying to select Program and fetch collection of Documents:
> select
> p.id as {p.id},
> d.program_id as {d.key},
> d.id as {d.element},
> d.id as {d.element.id},
> d.title as {d.element.title},
> d.program_id as {d.element.program}
> from ...
> SQLQuery q = session.createSQLQuery
> q.addEntity("p", Program.class);
> q.addJoin("d", "p.documents");
> q.list(); // throws exception
> There is a simple way to fix this bug:
> class SQLQueryParser
> method resolveCollectionProperties
> instead of code (line 140)
> else if ( "element.*".equals( propertyName ) ) {
> return resolveProperties( aliasName, "*" );
> }
> write
> else if( propertyName.startsWith(ELEMENT_PREFIX) ) {
> return resolveProperties( aliasName, propertyName.substring(ELEMENT_PREFIX.length()) );
> }
> comments: ELEMENT_PREFIX is defined as
> private static final String ELEMENT_PREFIX = "element.";
> The fixed file is attached.
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