/**
* For serialization purposes, resolve a deserialized instance to an instance in the expression
* cache.
*/
private Object readResolve() throws ObjectStreamException {
return ExpressionCache.cacheExpression(this);
}
/**
* Resolves the current expression, possibly into a different expression object. This is loosely
* equivalent to the serialization protocol's <code>readResolve</code> method. Situations where
* this may be used are:
*
* <ul>
* <li>Caching frequently-used expression objects
* <li>Evaluating constant expressions, and returning a constant reference
* </ul>
*/
public Expression resolveExpression() {
return ExpressionCache.cacheExpression(this);
}
/**
* For serialization purposes, resolve a deserialized instance to an instance in the expression
* cache.
*/
private Object readResolve() throws ObjectStreamException {
if (isComplete()) {
return ExpressionCache.cacheExpression(this);
}
return this;
}
