net.sf.jso.query
Class Criteria

java.lang.Object
  net.sf.jso.query.Criteria

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

Predicate

public class Criteria

extends java.lang.Object

implements java.io.Serializable

Criteria used for object query. Criteria is composed of a list of other criteria objects and an operator, forming a (tree-like) expression. Only operators AND and OR are accepted.

See Also:

Serialized Form

Field Summary

protected java.util.ArrayList	elements
protected CriteriaOperator	operator

Constructor Summary

Criteria(java.util.Collection someCriteria, CriteriaOperator anOperator)
Constructs criteria expression.

Criteria(Criteria[] someCriteria, CriteriaOperator anOperator)
Constructs criteria expression.

Criteria(CriteriaOperator anOperator)
Constructs criteria expression.

Method Summary

void	addCriteria(java.util.Collection someCriteria) Adds some criteria to this criteria expression.
void	addCriteria(Criteria someCriteria) Adds some criteria to this criteria expression.
void	addCriteria(Criteria[] someCriteria) Adds some criteria to this criteria expression.
java.util.List	getElements() Returns criteria expression's elements.
CriteriaOperator	getOperator() Returns the operator of the criteria expression.
boolean	isEmpty() Indicates if the criteria expression is empty.
void	setOperator(CriteriaOperator anOperator) Sets criteria operator.
int	size() Returns the number of elements of the criteria expression.

Methods inherited from class java.lang.Object

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

Field Detail

operator

protected CriteriaOperator operator

elements

protected java.util.ArrayList elements

Constructor Detail

Criteria

public Criteria(CriteriaOperator anOperator)

Constructs criteria expression.

Parameters:

anOperator - Criteria's operator.

Criteria

public Criteria(java.util.Collection someCriteria,
                CriteriaOperator anOperator)

Constructs criteria expression.

Parameters:

someCriteria - Elements to compose criteria expression.

anOperator - Criteria's operator.

Criteria

public Criteria(Criteria[] someCriteria,
                CriteriaOperator anOperator)

Constructs criteria expression.

Parameters:

someCriteria - Elements to compose criteria expression.

anOperator - Criteria's operator.

Method Detail

setOperator

public void setOperator(CriteriaOperator anOperator)

Sets criteria operator.

getOperator

public CriteriaOperator getOperator()

Returns the operator of the criteria expression.

Returns:

The operator of the criteria expression.

isEmpty

public boolean isEmpty()

Indicates if the criteria expression is empty.

Returns:

true if expression is empty; false otherwise.

getElements

public java.util.List getElements()

Returns criteria expression's elements.

Returns:

Criteria expression's elements list.

size

public int size()

Returns the number of elements of the criteria expression.

Returns:

The number of elements of the criteria expression.

addCriteria

public void addCriteria(Criteria someCriteria)

Adds some criteria to this criteria expression.

Parameters:

someCriteria - Criteria to be added.

addCriteria

public void addCriteria(java.util.Collection someCriteria)

Adds some criteria to this criteria expression.

Parameters:

someCriteria - Collection of criteria to be added.

addCriteria

public void addCriteria(Criteria[] someCriteria)

Adds some criteria to this criteria expression.

Parameters:

someCriteria - Array of criteria to be added.