Class SelfProperty<E extends Persistent>

java.lang.Object

org.apache.cayenne.exp.property.BaseProperty<E>

org.apache.cayenne.exp.property.EntityProperty<E>

org.apache.cayenne.exp.property.SelfProperty<E>

Type Parameters:

E - type of the property

All Implemented Interfaces:

PathProperty<E>, Property<E>, RelationshipProperty<E>

public class SelfProperty<E extends Persistent>
extends EntityProperty<E>

Property that represents root entity

Usage example:

List<Object[]> result = Artist.SELF
    .columnQuery(Artist.SELF, Artist.PAINTING_ARRAY.count())
    .select(context);

Since:

5.0

Field Summary

Fields inherited from class BaseProperty

expressionSupplier, path, type

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	SelfProperty(CayennePath path, Expression expression, Class<E> type)	Constructs a new property with the given name and expression

Method Summary

Modifier and Type	Method	Description
ColumnSelect<Object[]>	columnQuery(Property<?>... properties)
<T> ColumnSelect<T>	columnQuery(Property<T> property)
Expression	exists(Expression where)
Expression	notExists(Expression where)
ObjectSelect<E>	query()
ObjectSelect<E>	query(Expression where)

Methods inherited from class EntityProperty

alias, enclosing, eqId, idsIn, idsInCollection, idsNotIn, idsNotInCollection, inId, inId, neqId, ninId, ninId, outer

Methods inherited from class BaseProperty

aggregate, asc, ascInsensitive, ascInsensitives, ascs, count, countDistinct, desc, descInsensitive, descInsensitives, descs, eq, eq, equals, function, function, getAlias, getExpression, getFrom, getFromAll, getName, getPath, getType, hashCode, in, in, in, isFalse, isNotNull, isNull, isTrue, ne, ne, nin, nin, nin, operator, operator, setIn, setInAll

Methods inherited from class Object

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

Methods inherited from interface PathProperty

dot, dot, dot, dot, dot

Methods inherited from interface Property

getAlias, getExpression, getName, getPath, getType

Methods inherited from interface RelationshipProperty

disjoint, disjointById, dot, dot, dot, dot, dot, dot, dot, exists, joint, notExists

Constructor Details

SelfProperty

protected SelfProperty(CayennePath path,
 Expression expression,
 Class<E> type)

Constructs a new property with the given name and expression

Parameters:

path - of the property (will be used as alias for the expression)

expression - expression for property

type - of the property

See Also:

• PropertyFactory.createBase(String, Expression, Class)

Method Details

exists

public Expression exists(Expression where)

notExists

public Expression notExists(Expression where)

query

public ObjectSelect<E> query(Expression where)

query

public ObjectSelect<E> query()

columnQuery

public <T> ColumnSelect<T> columnQuery(Property<T> property)

columnQuery

public ColumnSelect<Object[]> columnQuery(Property<?>... properties)