net.ontopia.persistence.query.sql

Class SQLAggregate

java.lang.Object

net.ontopia.persistence.query.sql.SQLAggregate

All Implemented Interfaces:

SQLAggregateIF

public class SQLAggregate
extends Object
implements SQLAggregateIF

INTERNAL: Represents an aggregate function in a SQL query.

Field Summary

Fields

Modifier and Type	Field and Description
protected String	alias
protected int	type
protected SQLValueIF	value

Fields inherited from interface net.ontopia.persistence.query.sql.SQLAggregateIF

COUNT

Constructor Summary

Constructors

Constructor and Description
SQLAggregate(SQLValueIF value, int type)

Method Summary

Modifier and Type	Method and Description
String	getAlias() INTERNAL: The column alias to use if this value is included in the projection.
SQLAggregateIF	getReference() INTERNAL: Returns the referenced aggregate if one exists.
int	getType() INTERNAL: Returns the aggregate function type indicated by one of the constants in the SQLAggregateIF interface.
SQLValueIF	getValue() INTERNAL: Returns the SQLValueIF that the aggregate function is to be evaluated against.
boolean	isReference() INTERNAL: Returns true if this aggregate is a reference to another.
void	setAlias(String alias) INTERNAL: Sets the column alias.
void	setValue(SQLValueIF value) INTERNAL: Sets the SQLValueIF that the aggregate function is to be evaluated against.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

type

protected int type

value

protected SQLValueIF value

alias

protected String alias

Constructor Detail

SQLAggregate

public SQLAggregate(SQLValueIF value,
                    int type)

Method Detail

getType

public int getType()

Description copied from interface: SQLAggregateIF

INTERNAL: Returns the aggregate function type indicated by one of the constants in the SQLAggregateIF interface.

Specified by:

getType in interface SQLAggregateIF

getValue

public SQLValueIF getValue()

Description copied from interface: SQLAggregateIF

INTERNAL: Returns the SQLValueIF that the aggregate function is to be evaluated against.

Specified by:

getValue in interface SQLAggregateIF

setValue

public void setValue(SQLValueIF value)

Description copied from interface: SQLAggregateIF

INTERNAL: Sets the SQLValueIF that the aggregate function is to be evaluated against.

Specified by:

setValue in interface SQLAggregateIF

getAlias

public String getAlias()

Description copied from interface: SQLAggregateIF

INTERNAL: The column alias to use if this value is included in the projection. The SQL select syntax is typically like "select value as from foo".

Specified by:

getAlias in interface SQLAggregateIF

setAlias

public void setAlias(String alias)

Description copied from interface: SQLAggregateIF

INTERNAL: Sets the column alias.

Specified by:

setAlias in interface SQLAggregateIF

isReference

public boolean isReference()

Description copied from interface: SQLAggregateIF

INTERNAL: Returns true if this aggregate is a reference to another.

Specified by:

isReference in interface SQLAggregateIF

getReference

public SQLAggregateIF getReference()

Description copied from interface: SQLAggregateIF

INTERNAL: Returns the referenced aggregate if one exists.

Specified by:

getReference in interface SQLAggregateIF

toString

public String toString()

Overrides:

toString in class Object