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HQL is a SQL-like query language that references hibernate object properties rather that table column names.

Hibernate Logging

If you wish to see Hibernate queries and their parameters logged in your DSpace log files (dspace.log.*), you can update the log4j.properties A1 appender as follows:

# Log all Hibernate queries (does not include query params)
log4j.logger.org.hibernate.SQL=DEBUG, A1
# Log all Hibernate query parameters (immediately after query they pertain to)
log4j.logger.org.hibernate.type.descriptor.sql=TRACE, A1

Common Hibernate Error Messages

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