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 @Nullable String	type
protected @Nullable 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(@Nullable Object obj) This must be overidden to allow comparisons of objects.
protected static boolean	equals(@Nullable Object a, @Nullable Object b)
String	getType() As this cannot change during the life of the object, it's final.
@Nullable String	getValue() This must be overidden, to return the value of the object, in the form required by org.postgresql.
int	hashCode() Compute hash.
boolean	isNull() Returns true if the current object wraps `null` value.
void	setType(String type) This method sets the type of this object.
void	setValue(@Nullable 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 @Nullable String type

value

protected @Nullable 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(@Nullable 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 @Nullable 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

isNull

public boolean isNull()

Returns true if the current object wraps `null` value. This might be helpful

Returns:

true if the current object wraps `null` value.

equals

public boolean equals(@Nullable 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

clone

public Object clone()
             throws CloneNotSupportedException

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

Overrides:

clone in class Object

Throws:

CloneNotSupportedException

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)

equals

protected static boolean equals(@Nullable Object a,
                                @Nullable Object b)