Package com.blazebit.persistence.view

Interface CorrelationProvider

public interface CorrelationProvider
Provides correlation functionality for entity views. Beware that correlation providers may only be used once for an entity view hierarchy. Also note that aliases defined in the query builder will contribute to the main query when using FetchStrategy.JOIN, so be careful and choose rather unique names.
Since:
1.2.0
Author:
Christian Beikov

  • Method Summary

    Modifier and Type Method Description
    void applyCorrelation​(CorrelationBuilder correlationBuilder, String correlationExpression)
    Applies a correlation to a query builder.

  • Method Details

    • applyCorrelation

      void applyCorrelation​(CorrelationBuilder correlationBuilder, String correlationExpression)
      Applies a correlation to a query builder. Depending on the correlation strategy, the correlationExpression may be one of the following: To be able to make use of all strategies it is best if you use the IN predicate in conjunction with the correlationExpression.
      Parameters:
      correlationBuilder - The correlation builder to create the correlation
      correlationExpression - The correlation expression from the outer query on which to correlate