org.springframework.data.jpa.provider

Interface QueryExtractor

All Known Implementing Classes:

PersistenceProvider

public interface QueryExtractor

Interface to hide different implementations to extract the original JPA query string from a Query.

Author:

Oliver Gierke, Mark Paluch

Method Summary

Modifier and Type	Method and Description
boolean	canExtractQuery() Returns whether the extractor is able to extract the original query string from a given Query.
String	extractQueryString(javax.persistence.Query query) Reverse engineers the query string from the Query object.

Method Detail

extractQueryString

@Nullable
String extractQueryString(javax.persistence.Query query)

Reverse engineers the query string from the Query object. This requires provider specific API as JPA does not provide access to the underlying query string as soon as one has created a Query instance of it.

Parameters:

query -

Returns:

the query string representing the query or null if resolving is not possible.

canExtractQuery

boolean canExtractQuery()

Returns whether the extractor is able to extract the original query string from a given Query.

Returns: