Package com.tangosol.config.expression

Class LiteralExpression<T>

java.lang.Object

com.tangosol.config.expression.LiteralExpression<T>

All Implemented Interfaces:

Expression<T>, ExternalizableLite, PortableObject, Serializable

public class LiteralExpression<T>
extends Object
implements Expression<T>, ExternalizableLite, PortableObject

A LiteralExpression is a literal (aka: constant) Expression.

Since:

Coherence 12.1.2

Author:

bo 2011.06.24

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
LiteralExpression()	Default constructor needed for serialization.
LiteralExpression(T value)	Construct a LiteralExpression.

Method Summary

Modifier and Type	Method	Description
T	evaluate(ParameterResolver resolver)	Evaluates the Expression to produce a value of type T.
void	readExternal(PofReader reader)	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 writer)	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 java.lang.Object

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

Constructor Detail

LiteralExpression

public LiteralExpression()

Default constructor needed for serialization.

LiteralExpression

public LiteralExpression(T value)

Construct a LiteralExpression.

Parameters:

value - the value of the constant

Method Detail

evaluate

public T evaluate(ParameterResolver resolver)

Evaluates the Expression to produce a value of type T.

Specified by:

evaluate in interface Expression<T>

Parameters:

resolver - the ParameterResolver for resolving any parameters used by the Expression

Returns:

The result of evaluating the expression

readExternal

public void readExternal(DataInput in)
                  throws IOException

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

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 reader)
                  throws IOException

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

Specified by:

readExternal in interface PortableObject

Parameters:

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

Throws:

IOException - if an I/O error occurs

writeExternal

public void writeExternal(PofWriter writer)
                   throws IOException

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:

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

Throws:

IOException - if an I/O error occurs

toString

public String toString()

Overrides:

toString in class Object