org.postgresql.util

Class PGobject

java.lang.Object

org.postgresql.util.PGobject

All Implemented Interfaces:

Serializable, Cloneable

Direct Known Subclasses:

PGbox, PGcircle, PGInterval, PGline, PGlseg, PGmoney, PGpath, PGpoint, PGpolygon

public class PGobject
extends Object
implements Serializable, Cloneable

PGobject is a class used to describe unknown types An unknown type is any type that is unknown by JDBC Standards.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected String	type
protected String	value

Constructor Summary

Constructors

Constructor and Description
PGobject() This is called by org.postgresql.Connection.getObject() to create the object.

Method Summary

Modifier and Type	Method and Description
Object	clone() This must be overidden to allow the object to be cloned.
boolean	equals(Object obj) This must be overidden to allow comparisons of objects.
String	getType() As this cannot change during the life of the object, it's final.
String	getValue() This must be overidden, to return the value of the object, in the form required by org.postgresql.
int	hashCode() Compute hash.
void	setType(String type) This method sets the type of this object.
void	setValue(String value) This method sets the value of this object.
String	toString() This is defined here, so user code need not overide it.

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

type

protected String type

value

protected String value

Constructor Detail

PGobject

public PGobject()

This is called by org.postgresql.Connection.getObject() to create the object.

Method Detail

setType

public final void setType(String type)

This method sets the type of this object.

It should not be extended by subclasses, hence it is final

Parameters:

type - a string describing the type of the object

setValue

public void setValue(String value)
              throws SQLException

This method sets the value of this object. It must be overridden.

Parameters:

value - a string representation of the value of the object

Throws:

SQLException - thrown if value is invalid for this type

getType

public final String getType()

As this cannot change during the life of the object, it's final.

Returns:

the type name of this object

getValue

public String getValue()

This must be overidden, to return the value of the object, in the form required by org.postgresql.

Returns:

the value of this object

equals

public boolean equals(Object obj)

This must be overidden to allow comparisons of objects.

Overrides:

equals in class Object

Parameters:

obj - Object to compare with

Returns:

true if the two boxes are identical

See Also:

Object.hashCode(), HashMap

clone

public Object clone()
             throws CloneNotSupportedException

This must be overidden to allow the object to be cloned.

Overrides:

clone in class Object

Returns:

a clone of this instance.

Throws:

CloneNotSupportedException - if the object's class does not support the Cloneable interface. Subclasses that override the clone method can also throw this exception to indicate that an instance cannot be cloned.

See Also:

Cloneable

toString

public String toString()

This is defined here, so user code need not overide it.

Overrides:

toString in class Object

Returns:

the value of this object, in the syntax expected by org.postgresql

hashCode

public int hashCode()

Compute hash. As equals() use only value. Return the same hash for the same value.

Overrides:

hashCode in class Object

Returns:

Value hashcode, 0 if value is null Objects.hashCode(Object)

See Also:

Object.equals(java.lang.Object), System.identityHashCode(java.lang.Object)