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

public Class SubqueryEntityResolver

This Resolver retrieves the type for an abstract schema name (entity name) if it can be resolved otherwise a derived path will be assumed. This Resolver is used within a subquery and it handles the following two cases.

The "root" object in the subquery is an unqualified derived path:

 UPDATE Employee SET name = 'JPQL'
WHERE (SELECT a FROM addr a)

and The "root" object in the subquery is an entity:

 UPDATE Employee SET name = 'JPQL'
WHERE (SELECT a FROM Address a)

Author

Pascal Filion

Since

2.5

Version

2.5

Field Summary

Modifier and Type	Field and Description
private AbstractSchemaName	abstractSchemaName The `AbstractSchemaName` holding onto the the name of the entity.
private Resolver	derivedPathResolver The actual `Resolver` when the abstract schema name is actually an unqualified derived path expression.
private String	entityName The name of the entity or the unqualified derived path.
private IManagedType	managedType The `IManagedType` with the same abstract schema name.
private boolean	managedTypeResolved Determines whether the managed type was resolved or not.
private JPQLQueryContext	queryContext The `JPQLQueryContext` for the subquery.

Constructor Summary

Access	Constructor and Description
public	SubqueryEntityResolver(Resolver The parent `Resolver`, which is never `null` parent, JPQLQueryContext The `JPQLQueryContext` for the subquery queryContext, AbstractSchemaName The `AbstractSchemaName` holding onto the the name of the entity abstractSchemaName) Creates a new `DerivedPathResolver`.

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 String	Returns: The entity name, which is never `null` getAbstractSchemaName() Returns the name of the entity to resolve.
public IManagedType	getManagedType() Overrides org.eclipse.persistence.jpa.jpql.tools.resolver.Resolver.getManagedType. Returns the `IManagedType` associated with the field handled by this `Resolver`.
public IMapping	getMapping() Overrides org.eclipse.persistence.jpa.jpql.tools.resolver.Resolver.getMapping. Returns the `IMapping` for the wrapped field.
protected Resolver	Returns: A non-`null` `Resolver` resolveDerivePathResolver() Creates the `Resolver` for a unqualified derived path expression.
public String	toString() Overrides java.lang.Object.toString. Returns a string representation of the object.

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 String

Returns:

The entity name, which is never null

getAbstractSchemaName()

Returns the name of the entity to resolve.

public IManagedType

getManagedType()

Overrides org.eclipse.persistence.jpa.jpql.tools.resolver.Resolver.getManagedType.

Returns the IManagedType associated with the field handled by this Resolver.

public IMapping

getMapping()

Overrides org.eclipse.persistence.jpa.jpql.tools.resolver.Resolver.getMapping.

Returns the IMapping for the wrapped field.

protected Resolver

Returns:

A non-null Resolver

resolveDerivePathResolver()

Creates the Resolver for a unqualified derived path expression.

public String

toString()

Overrides java.lang.Object.toString.

Returns a string representation of the object.

Field Detail

abstractSchemaName	back to summary
private AbstractSchemaName abstractSchemaName The `AbstractSchemaName` holding onto the the name of the entity.

derivedPathResolver	back to summary
private Resolver derivedPathResolver The actual `Resolver` when the abstract schema name is actually an unqualified derived path expression.

entityName	back to summary
private String entityName The name of the entity or the unqualified derived path.

managedType	back to summary
private IManagedType managedType The `IManagedType` with the same abstract schema name.

managedTypeResolved	back to summary
private boolean managedTypeResolved Determines whether the managed type was resolved or not.

queryContext	back to summary
private JPQLQueryContext queryContext The `JPQLQueryContext` for the subquery.

Constructor Detail

SubqueryEntityResolver back to summary

SubqueryEntityResolver	back to summary
public SubqueryEntityResolver(Resolver parent, JPQLQueryContext queryContext, AbstractSchemaName abstractSchemaName) Creates a new `DerivedPathResolver`. Parameters parent:Resolver The parent `Resolver`, which is never `null` queryContext:JPQLQueryContext The `JPQLQueryContext` for the subquery abstractSchemaName:AbstractSchemaName The `AbstractSchemaName` holding onto the the name of the entity

public SubqueryEntityResolver(Resolver parent, JPQLQueryContext queryContext, AbstractSchemaName abstractSchemaName)

Creates a new DerivedPathResolver.

Parameters

parent:Resolver: The parent Resolver, which is never null
queryContext:JPQLQueryContext: The JPQLQueryContext for the subquery
abstractSchemaName:AbstractSchemaName: The AbstractSchemaName holding onto the the name of the entity

Method Detail

buildType back to summary

buildType	back to summary
protected IType buildType() Overrides org.eclipse.persistence.jpa.jpql.tools.resolver.Resolver.buildType. Doc from org.eclipse.persistence.jpa.jpql.tools.resolver.Resolver.buildType. Resolves the `IType` of the property handled by this `Resolver`. Returns:IType Either the `IType` that was resolved by this `Resolver` or the `IType` for `IType#UNRESOLVABLE_TYPE` if it could not be resolved Annotations @Override

protected IType buildType()

Overrides org.eclipse.persistence.jpa.jpql.tools.resolver.Resolver.buildType.

Doc from org.eclipse.persistence.jpa.jpql.tools.resolver.Resolver.buildType.

Resolves the IType of the property handled by this Resolver.

Returns:IType

Either the IType that was resolved by this Resolver or the IType for IType#UNRESOLVABLE_TYPE if it could not be resolved

Annotations

@Override

buildTypeDeclaration back to summary

buildTypeDeclaration	back to summary
protected ITypeDeclaration buildTypeDeclaration() Implements abstract org.eclipse.persistence.jpa.jpql.tools.resolver.Resolver.buildTypeDeclaration. Doc from org.eclipse.persistence.jpa.jpql.tools.resolver.Resolver.buildTypeDeclaration. Resolves the `ITypeDeclaration` of the property handled by this `Resolver`. Returns:ITypeDeclaration Either the `ITypeDeclaration` that was resolved by this `Resolver` or the `ITypeDeclaration` for `IType#UNRESOLVABLE_TYPE` if it could not be resolved Annotations @Override

protected ITypeDeclaration buildTypeDeclaration()

Implements abstract org.eclipse.persistence.jpa.jpql.tools.resolver.Resolver.buildTypeDeclaration.

Doc from org.eclipse.persistence.jpa.jpql.tools.resolver.Resolver.buildTypeDeclaration.

Resolves the ITypeDeclaration of the property handled by this Resolver.

Returns:ITypeDeclaration

Either the ITypeDeclaration that was resolved by this Resolver or the ITypeDeclaration for IType#UNRESOLVABLE_TYPE if it could not be resolved

Annotations

@Override

getAbstractSchemaName back to summary

getAbstractSchemaName	back to summary
public String getAbstractSchemaName() Returns the name of the entity to resolve. Returns:String The entity name, which is never `null`

public String getAbstractSchemaName()

Returns the name of the entity to resolve.

Returns:String: The entity name, which is never null

getManagedType back to summary

getManagedType	back to summary
public IManagedType getManagedType() Overrides org.eclipse.persistence.jpa.jpql.tools.resolver.Resolver.getManagedType. Doc from org.eclipse.persistence.jpa.jpql.tools.resolver.Resolver.getManagedType. Returns the `IManagedType` associated with the field handled by this `Resolver`. If this `Resolver` does not handle a field that has a `IManagedType`, then `null` should be returned. For example: "`SELECT e FROM Employee e`", the `Resolver` for e would be returning the `IManagedType` for Employee. Returns:IManagedType Either the `IManagedType`, if it could be resolved; `null` otherwise Annotations @Override

public IManagedType getManagedType()

Overrides org.eclipse.persistence.jpa.jpql.tools.resolver.Resolver.getManagedType.

Doc from org.eclipse.persistence.jpa.jpql.tools.resolver.Resolver.getManagedType.

Returns the IManagedType associated with the field handled by this Resolver. If this Resolver does not handle a field that has a IManagedType, then null should be returned.

For example: "SELECT e FROM Employee e", the Resolver for e would be returning the IManagedType for Employee.

Returns:IManagedType

Either the IManagedType, if it could be resolved; null otherwise

Annotations

@Override

getMapping back to summary

getMapping	back to summary
public IMapping getMapping() Overrides org.eclipse.persistence.jpa.jpql.tools.resolver.Resolver.getMapping. Doc from org.eclipse.persistence.jpa.jpql.tools.resolver.Resolver.getMapping. Returns the `IMapping` for the wrapped field. Returns:IMapping Either the `IMapping` or `null` if none exists Annotations @Override

public IMapping getMapping()

Overrides org.eclipse.persistence.jpa.jpql.tools.resolver.Resolver.getMapping.

Doc from org.eclipse.persistence.jpa.jpql.tools.resolver.Resolver.getMapping.

Returns the IMapping for the wrapped field.

Returns:IMapping

Either the IMapping or null if none exists

Annotations

@Override

resolveDerivePathResolver back to summary

resolveDerivePathResolver	back to summary
protected Resolver resolveDerivePathResolver() Creates the `Resolver` for a unqualified derived path expression. Returns:Resolver A non-`null` `Resolver`

protected Resolver resolveDerivePathResolver()

Creates the Resolver for a unqualified derived path expression.

Returns:Resolver: A non-null Resolver

toString	back to summary
public String toString() Overrides java.lang.Object.toString. Doc from java.lang.Object.toString. Returns a string representation of the object. Returns:String a string representation of the object. Annotations @Override

toString

back to summary

public String toString()

Overrides java.lang.Object.toString.

Doc from java.lang.Object.toString.

Returns a string representation of the object.

Returns:String

a string representation of the object.

Annotations

@Override

public Class SubqueryEntityResolver

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail