Package ubic.gemma.persistence.util

Class Subquery

java.lang.Object

ubic.gemma.persistence.util.Subquery

public final class Subquery
extends Object

Represents a subquery right-hand side of a Filter.

A subquery has rather limited structure:

select {rootAlias}.{propertyName} from {entityName} {rootAlias} join {aliases...} where {filter}

and is solely designed to nest a Filter in a subquery so that it can be applied to one-to-many relations.

The root alias is used whenever null is used as object alias in the aliases or filter. It can be declared by passing an Subquery.Alias with a null object alias and an empty property name.

Author:

poirgui

See Also:

• Filter.by(String, String, Class, Filter.Operator, Subquery)
• Filter.by(String, String, Class, Filter.Operator, Subquery, String)

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	Subquery.Alias

Constructor Summary

Constructors

Constructor	Description
Subquery(String entityName, String propertyName, List<Subquery.Alias> aliases, Filter filter)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
List<Subquery.Alias>	getAliases()	List of aliases for resolving the object alias defined in filter.
String	getEntityName()	The entity name being queried.
Filter	getFilter()	A filter being nested in the subquery.
String	getPropertyName()	The property name being queried.
String	getRootAlias()	Root alias of this subquery.
int	hashCode()
String	toString()
Subquery	withFilterPropertyName(String newPropertyName, String originalProperty)	Create a new subquery with a different property name for the filter.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

Subquery

public Subquery(String entityName,
 String propertyName,
 List<Subquery.Alias> aliases,
 Filter filter)

Method Details

withFilterPropertyName

public Subquery withFilterPropertyName(String newPropertyName,
 @Nullable
 String originalProperty)

Create a new subquery with a different property name for the filter.

toString

public String toString()

Overrides:

toString in class Object

getEntityName

public String getEntityName()

The entity name being queried.

getPropertyName

public String getPropertyName()

The property name being queried.

getAliases

public List<Subquery.Alias> getAliases()

List of aliases for resolving the object alias defined in filter.

getRootAlias

public String getRootAlias()

Root alias of this subquery.

If none are defined in aliases, the default e is used.

getFilter

public Filter getFilter()

A filter being nested in the subquery.

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object