org.tensorics.core.tree.domain

Class AbstractDeferredExpression<R>

java.lang.Object

org.tensorics.core.tree.domain.AbstractDeferredExpression<R>

Type Parameters:

R - the type of the resolved value of the expression.

All Implemented Interfaces:

java.io.Serializable, Expression<R>, Node

Direct Known Subclasses:

AnalysisExpression, AssertionExpression, BinaryOperationExpression, BinaryPredicateExpression, BinaryPredicateIterableExpression, ConversionOperationExpression, CreationOperationExpression, FunctionalExpression, IterableExpressionToIterable, IterableResolvingExpression, PickExpression, Placeholder, PredicateExpression, UnaryOperationExpression

public abstract class AbstractDeferredExpression<R>
extends java.lang.Object
implements Expression<R>

A base class for all kind of deferred (unresolved) expressions. All the methods of the expression interface are implemented here and cannot be overridden. However, the subclasses can / have to provide the necessary informations for the corresponding resolvers.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
AbstractDeferredExpression()

Method Summary

Modifier and Type	Method and Description
R	get() Retrieves the value of the expression.
boolean	isResolved() returns true if the expression contains a concrete value.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.tensorics.core.tree.domain.Node

getChildren

Constructor Detail

AbstractDeferredExpression

public AbstractDeferredExpression()

Method Detail

isResolved

public final boolean isResolved()

Description copied from interface: Expression

returns true if the expression contains a concrete value. Thus the method Expression.get() can be used to retrieve the actual value. If this method returns false, then the get method will throw an exception.

Specified by:

isResolved in interface Expression<R>

Returns:

true if the value can be retrieved, false otherwise.

get

public final R get()

Description copied from interface: Expression

Retrieves the value of the expression. If the expression is deferred, then an expression will be thrown.

Specified by:

get in interface Expression<R>

Returns:

the value of the expression.