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• net.sf.xsemantics
• it.xsemantics.runtime
• 1.9.0
• source code
• XsemanticsProvider.java

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it.xsemantics.runtime.XsemanticsProvider Maven / Gradle / Ivy

/**
 * 
 */
package it.xsemantics.runtime;



/**
 * We use this to keep track of whether this provider's get method has
 * been called in order to understand if we use a cached value or not
 * in {@link XsemanticsCache}; this helps us to provide a better
 * {@link RuleApplicationTrace}.
 * 
 * @author Lorenzo Bettini
 * @since 1.6
 */
public abstract class XsemanticsProvider implements com.google.inject.Provider> {

	private RuleEnvironment environment;
	
	private RuleApplicationTrace trace;
	
	private boolean called = false;
	
	public XsemanticsProvider(RuleEnvironment environment,
			RuleApplicationTrace trace) {
		super();
		this.environment = environment;
		this.trace = trace;
	}

	@Override
	public XsemanticsCachedData get() {
		called = true;
		T doGet = doGet();
		RuleApplicationTrace snapshot = trace != null ? trace.snapshot() : null;
		return new XsemanticsCachedData(environment, snapshot, doGet);
	}

	public abstract T doGet();

	public boolean isCalled() {
		return called;
	}

}