org.hibernate.loader.plan.exec.process.internal

Interface EntityIdentifierReader

All Known Implementing Classes:

EntityIdentifierReaderImpl

public interface EntityIdentifierReader

Identifiers are read from the ResultSet in 2 distinct phases:

1. First we hydrate the identifier values (see hydrate(java.sql.ResultSet, org.hibernate.loader.plan.exec.process.spi.ResultSetProcessingContext)). During this "phase" 2 things happen:
   1. Any "optional identifier" specified on QueryParameters is considered. If the "optional identifier" is to be used for this identifier read, it is used to build an EntityKey which is associated with the ResultSetProcessingContext.EntityReferenceProcessingState for the EntityReference under ResultSetProcessingContext.EntityReferenceProcessingState#registerEntityKey
   2. All other id values are hydrated from the ResultSet. Those hydrated values are then registered with the ResultSetProcessingContext.EntityReferenceProcessingState for the EntityReference under ResultSetProcessingContext.EntityReferenceProcessingState#registerIdentifierHydratedForm
2. Then we resolve the identifier. This is again a 2 step process:
   1. For all fetches that "come from" an identifier (key-many-to-ones), we fully hydrate those entities
   2. We then call resolve on root identifier type, and use that to build an EntityKey,which is then registered with the ResultSetProcessingContext.EntityReferenceProcessingState for the EntityReference whose identifier we are reading under ResultSetProcessingContext.EntityReferenceProcessingState#registerEntityKey

Method Summary

Methods

Modifier and Type	Method and Description
void	hydrate(ResultSet resultSet, ResultSetProcessingContext context) Hydrate the entity identifier.
void	resolve(ResultSet resultSet, ResultSetProcessingContext context) Resolve the entity identifier.

Method Detail

hydrate

void hydrate(ResultSet resultSet,
           ResultSetProcessingContext context)
             throws SQLException

Hydrate the entity identifier. Perform the first phase outlined above.

Parameters:

resultSet - The ResultSet

context - The processing context

Throws:

SQLException - Problem accessing ResultSet

resolve

void resolve(ResultSet resultSet,
           ResultSetProcessingContext context)
             throws SQLException

Resolve the entity identifier. Perform the second phase outlined above.

Parameters:

resultSet - The ResultSet

context - The processing context

Throws:

SQLException - Problem accessing ResultSet