Module java.sql.rowset

Package javax.sql.rowset.serial

Class SerialRef

java.lang.Object

javax.sql.rowset.serial.SerialRef

All Implemented Interfaces:

Serializable, Cloneable, Ref

public class SerialRef
extends Object
implements Ref, Serializable, Cloneable

A serialized mapping of a Ref object, which is the mapping in the Java programming language of an SQL REF value.

The SerialRef class provides a constructor for creating a SerialRef instance from a Ref object and provides methods for getting and setting the Ref object.

Thread safety

A SerialRef is not safe for use by multiple concurrent threads. If a SerialRef is to be used by more than one thread then access to the SerialRef should be controlled by appropriate synchronization.

Since:

1.5

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
SerialRef(Ref ref)	Constructs a SerialRef object from the given Ref object.

Method Summary

Modifier and Type	Method	Description
Object	clone()	Returns a clone of this SerialRef.
boolean	equals(Object obj)	Compares this SerialRef to the specified object.
String	getBaseTypeName()	Returns a string describing the base type name of the Ref.
Object	getObject()	Returns an Object representing the SQL structured type to which this SerialRef object refers.
Object	getObject(Map<String,Class<?>> map)	Returns an Object representing the SQL structured type to which this SerialRef object refers.
int	hashCode()	Returns a hash code for this SerialRef.
void	setObject(Object obj)	Sets the SQL structured type that this SerialRef object references to the given Object object.

Methods declared in class java.lang.Object

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

Constructor Details

SerialRef

public SerialRef(Ref ref)
          throws SerialException,
SQLException

Constructs a SerialRef object from the given Ref object.

Parameters:

ref - a Ref object; cannot be null

Throws:

SQLException - if a database access occurs; if ref is null; or if the Ref object returns a null value base type name.

SerialException - if an error occurs serializing the Ref object

Method Details

getBaseTypeName

public String getBaseTypeName()
                       throws SerialException

Returns a string describing the base type name of the Ref.

Specified by:

getBaseTypeName in interface Ref

Returns:

a string of the base type name of the Ref

Throws:

SerialException - in no Ref object has been set

getObject

public Object getObject(Map<String,Class<?>> map)
                 throws SerialException

Returns an Object representing the SQL structured type to which this SerialRef object refers. The attributes of the structured type are mapped according to the given type map.

Specified by:

getObject in interface Ref

Parameters:

map - a java.util.Map object containing zero or more entries, with each entry consisting of 1) a String giving the fully qualified name of a UDT and 2) the Class object for the SQLData implementation that defines how the UDT is to be mapped

Returns:

an object instance resolved from the Ref reference and mapped according to the supplied type map

Throws:

SerialException - if an error is encountered in the reference resolution

See Also:

• Ref.setObject(java.lang.Object)

getObject

public Object getObject()
                 throws SerialException

Returns an Object representing the SQL structured type to which this SerialRef object refers.

Specified by:

getObject in interface Ref

Returns:

an object instance resolved from the Ref reference

Throws:

SerialException - if an error is encountered in the reference resolution

See Also:

• Ref.setObject(java.lang.Object)

setObject

public void setObject(Object obj)
               throws SerialException

Sets the SQL structured type that this SerialRef object references to the given Object object.

Specified by:

setObject in interface Ref

Parameters:

obj - an Object representing the SQL structured type to be referenced

Throws:

SerialException - if an error is encountered generating the the structured type referenced by this SerialRef object

See Also:

• Ref.getObject()
• Ref.getObject(Map)
• PreparedStatement.setObject(int, Object)
• CallableStatement.setObject(String, Object)

equals

public boolean equals(Object obj)

Compares this SerialRef to the specified object. The result is true if and only if the argument is not null and is a SerialRef object that represents the same object as this object.

Overrides:

equals in class Object

Parameters:

obj - The object to compare this SerialRef against

Returns:

true if the given object represents a SerialRef equivalent to this SerialRef, false otherwise

See Also:

• Object.hashCode()
• HashMap

hashCode

public int hashCode()

Returns a hash code for this SerialRef.

Overrides:

hashCode in class Object

Returns:

a hash code value for this object.

See Also:

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

clone

public Object clone()

Returns a clone of this SerialRef. The underlying Ref object will be set to null.

Overrides:

clone in class Object

Returns:

a clone of this SerialRef

See Also:

• Cloneable