Package com.tangosol.util

Class SimpleHolder<V>

java.lang.Object

com.oracle.coherence.common.base.SimpleHolder<V>

com.tangosol.util.SimpleHolder<V>

Type Parameters:

V - the type of contained value

All Implemented Interfaces:

Holder<V>, ExternalizableLite, PortableObject, Serializable

public class SimpleHolder<V>
extends SimpleHolder<V>
implements ExternalizableLite, PortableObject, Holder<V>

General purpose container that can be used as an accumulator for any reference type.

See Also:

Serialized Form

Field Summary

Fields inherited from class com.oracle.coherence.common.base.SimpleHolder

m_value

Constructor Summary

Constructors

Constructor	Description
SimpleHolder()	Deserialization constructor.
SimpleHolder(V value)	Construct SimpleHolder instance.

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
int	hashCode()
boolean	isPresent()	Return true if the contained value is present, false otherwise.
void	readExternal(PofReader in)	Restore the contents of a user type instance by reading its state using the specified PofReader object.
void	readExternal(DataInput in)	Restore the contents of this object by loading the object's state from the passed DataInput object.
String	toString()
void	writeExternal(PofWriter out)	Save the contents of a POF user type instance by writing its state using the specified PofWriter object.
void	writeExternal(DataOutput out)	Save the contents of this object by storing the object's state into the passed DataOutput object.

Methods inherited from class com.oracle.coherence.common.base.SimpleHolder

get, set

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.oracle.coherence.common.base.Holder

get, set

Constructor Detail

SimpleHolder

public SimpleHolder()

Deserialization constructor.

SimpleHolder

public SimpleHolder(V value)

Construct SimpleHolder instance.

Parameters:

value - the contained value

Method Detail

isPresent

public boolean isPresent()

Return true if the contained value is present, false otherwise.

Returns:

true if the contained value is present, false otherwise

readExternal

public void readExternal(DataInput in)
                  throws IOException

Description copied from interface: ExternalizableLite

Restore the contents of this object by loading the object's state from the passed DataInput object.

Specified by:

readExternal in interface ExternalizableLite

Parameters:

in - the DataInput stream to read data from in order to restore the state of this object

Throws:

IOException - if an I/O exception occurs

NotActiveException - if the object is not in its initial state, and therefore cannot be deserialized into

writeExternal

public void writeExternal(DataOutput out)
                   throws IOException

Description copied from interface: ExternalizableLite

Save the contents of this object by storing the object's state into the passed DataOutput object.

Specified by:

writeExternal in interface ExternalizableLite

Parameters:

out - the DataOutput stream to write the state of this object to

Throws:

IOException - if an I/O exception occurs

readExternal

public void readExternal(PofReader in)
                  throws IOException

Description copied from interface: PortableObject

Restore the contents of a user type instance by reading its state using the specified PofReader object.

Specified by:

readExternal in interface PortableObject

Parameters:

in - the PofReader from which to read the object's state

Throws:

IOException - if an I/O error occurs

writeExternal

public void writeExternal(PofWriter out)
                   throws IOException

Description copied from interface: PortableObject

Save the contents of a POF user type instance by writing its state using the specified PofWriter object.

Specified by:

writeExternal in interface PortableObject

Parameters:

out - the PofWriter to which to write the object's state

Throws:

IOException - if an I/O error occurs

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object