com.ibm.websphere.query.base
Class OrderByExpression

java.lang.Object
  com.ibm.websphere.query.base.OrderByExpression

All Implemented Interfaces:

IOrderByExpression, IStringBuilder, java.io.Serializable

public class OrderByExpression
extends java.lang.Object
implements IOrderByExpression

The OrderByExpression class represents an order by expression in an order by clause in the query framework.

This class contains an order by element and an operator to describe a typical order by expression in an order by clause. For example, "order by age in ascending order" will be decomposed as order by element = Attribute("age"), operator = Operator("ASC")

See Also:

Serialized Form

Constructor Summary

OrderByExpression()
Creates a new OrderByExpression instance, default constructor.

OrderByExpression(IOperator newOperator, IOrderByElement newOrderByElement)
Creates a new OrderByExpression instance with the given operator and order by element.

Method Summary

java.lang.String	buildString(ISelectQueryCallback builder) Builds a query string for the condition.
void	buildString(ISelectQueryCallback builder, java.lang.StringBuffer sb)
boolean	equals(java.lang.Object o) Tests for equality with the given object.
IOperator	getOperator() Returns the operator.
IOrderByElement	getOrderByElement() Returns the order by element.
int	hashCode() Computes a hash code for the order by expression.
void	setOperator(IOperator newOperator) Sets the operator of the order by expression.
void	setOrderByElement(IOrderByElement newOrderByElement) Sets the order by element of the order by expression.

Methods inherited from class java.lang.Object

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

Constructor Detail

OrderByExpression

public OrderByExpression()

Creates a new OrderByExpression instance, default constructor.

OrderByExpression

public OrderByExpression(IOperator newOperator,
                         IOrderByElement newOrderByElement)

Creates a new OrderByExpression instance with the given operator and order by element.

Method Detail

buildString

public java.lang.String buildString(ISelectQueryCallback builder)
                             throws QueryException

Builds a query string for the condition.

Specified by:

buildString in interface IStringBuilder

Throws:

QueryException

buildString

public void buildString(ISelectQueryCallback builder,
                        java.lang.StringBuffer sb)
                 throws QueryException

Specified by:

buildString in interface IStringBuilder

Throws:

QueryException

equals

public boolean equals(java.lang.Object o)

Tests for equality with the given object.

Overrides:

equals in class java.lang.Object

getOperator

public IOperator getOperator()

Returns the operator.

Specified by:

getOperator in interface IOrderByExpression

getOrderByElement

public IOrderByElement getOrderByElement()

Returns the order by element.

Specified by:

getOrderByElement in interface IOrderByExpression

hashCode

public int hashCode()

Computes a hash code for the order by expression.

Overrides:

hashCode in class java.lang.Object

setOperator

public void setOperator(IOperator newOperator)

Sets the operator of the order by expression.

setOrderByElement

public void setOrderByElement(IOrderByElement newOrderByElement)

Sets the order by element of the order by expression.