EclipseLink Hermes Parser 4.0.2 · org.eclipse.persistence.jpa.jpql.tools.resolver.FromSubqueryResolver

This Resolver wraps a subquery that is used as the "root" object in a query's declaration.

Example:

   SELECT e.firstName
FROM Employee e, (SELECT count(e2), e2.firstName FROM Employee e2) e3
WHERE e.firstName = e3.firstName

Nested and Inner Type Summary

Modifier and Type	Class and Description
private static enum	FromSubqueryResolver.MappingType
protected class	FromSubqueryResolver.VirtualManagedType This `IManagedType` represents a virtual managed type where its content will be derived from the subquery.
protected static class	FromSubqueryResolver.VirtualMapping This virtual `IMapping` wraps one of the select items.
protected class	FromSubqueryResolver.VirtualMappingBuilder This visitor will traverse the `SELECT` clause and create virtual mappings for the state field path expressions and any expression aliased with a result variable.

Modifier and Type	Field and Description
private IManagedType	managedType The virtual `IManagedType` representing the subquery.
private JPQLQueryContext	queryContext The `JPQLQueryContext` is used to query information about the application metadata and cached information.
private SimpleSelectStatement	subquery The subquery being defined as a "root" object.

Access	Constructor and Description
public	FromSubqueryResolver(Resolver The parent of this resolver, which is never `null` parent, JPQLQueryContext The context used to query information about the application metadata and cached information queryContext, SimpleSelectStatement subquery) Creates a new `FromSubqueryResolver`.

Modifier and Type	Method and Description
protected IType	buildType() Overrides org.eclipse.persistence.jpa.jpql.tools.resolver.Resolver.buildType. Resolves the `IType` of the property handled by this `Resolver`.
protected ITypeDeclaration	buildTypeDeclaration() Implements abstract org.eclipse.persistence.jpa.jpql.tools.resolver.Resolver.buildTypeDeclaration. Resolves the `ITypeDeclaration` of the property handled by this `Resolver`.
public IManagedType	getManagedType() Overrides org.eclipse.persistence.jpa.jpql.tools.resolver.Resolver.getManagedType. Returns the `IManagedType` associated with the field handled by this `Resolver`.