Package cz.cvut.kbss.jopa.query.criteria.expressions

Class AbstractExpression<Y>

java.lang.Object

cz.cvut.kbss.jopa.query.criteria.SelectionImpl<Y>

cz.cvut.kbss.jopa.query.criteria.expressions.AbstractExpression<Y>

All Implemented Interfaces:

Expression<Y>, Selection<Y>, TupleElement<Y>

Direct Known Subclasses:

AbstractComparisonExpression, AbstractFunctionExpression, AbstractPathExpression, AbstractPredicate, ExpressionLiteralImpl, ParameterExpressionImpl

public abstract class AbstractExpression<Y>
extends SelectionImpl<Y>
implements Expression<Y>

Parent of all other types of expressions.

It offers its children the implementation of methods for IN expression as prescribed by the Expression interface. Prescribes an abstract method for expressing an expression to string builder representing the query.

Field Summary

Fields

Modifier and Type	Field	Description
protected final CriteriaBuilder	cb
protected boolean	negated

Fields inherited from class cz.cvut.kbss.jopa.query.criteria.SelectionImpl

type

Constructor Summary

Constructors

Constructor	Description
AbstractExpression(Class<Y> type, CriteriaBuilder cb)

Method Summary

Modifier and Type	Method	Description
Predicate	in(Object... values)	Create a predicate to test whether the expression is a member of the argument list.
Predicate	in(Collection<?> values)	Create a predicate to test whether the expression is a member of the collection.
boolean	isNegated()
void	negate()
abstract void	setExpressionToQuery(StringBuilder query, CriteriaParameterFiller parameterFiller)

Methods inherited from class cz.cvut.kbss.jopa.query.criteria.SelectionImpl

getAlias, getCompoundedSelectionItems, getJavaType, isCompoundedSelection

Methods inherited from class java.lang.Object

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

Methods inherited from interface cz.cvut.kbss.jopa.model.query.criteria.Selection

getCompoundedSelectionItems, isCompoundedSelection

Methods inherited from interface cz.cvut.kbss.jopa.model.query.TupleElement

getAlias, getJavaType

Field Details

cb

protected final CriteriaBuilder cb

negated

protected boolean negated

Constructor Details

AbstractExpression

public AbstractExpression(Class<Y> type,
 CriteriaBuilder cb)

Method Details

in

public Predicate in(Collection<?> values)

Description copied from interface: Expression

Create a predicate to test whether the expression is a member of the collection.

Specified by:

in in interface Expression<Y>

Parameters:

values - collection of values to be tested against

Returns:

predicate testing for membership

in

public Predicate in(Object... values)

Description copied from interface: Expression

Create a predicate to test whether the expression is a member of the argument list.

Specified by:

in in interface Expression<Y>

Parameters:

values - values to be tested against

Returns:

predicate testing for membership

setExpressionToQuery

public abstract void setExpressionToQuery(StringBuilder query,
 CriteriaParameterFiller parameterFiller)

isNegated

public boolean isNegated()

negate

public void negate()