LoadableDetachableModelExtendedDebugInformation.java

package fr.openwide.core.wicket.more.util.model;

import com.google.common.base.Throwables;

import fr.openwide.core.wicket.more.model.GenericEntityModel;
import fr.openwide.core.wicket.more.model.threadsafe.impl.AbstractThreadSafeLoadableDetachableModel;

/**
 * See {@link GenericEntityModel} or {@link AbstractThreadSafeLoadableDetachableModel} for examples of use.
 */
public final class LoadableDetachableModelExtendedDebugInformation {
	
	private StackTraceElement[] latestAttachStackTraceForDebug;

	public LoadableDetachableModelExtendedDebugInformation() {
		super();
	}
	
	public void onAttach() {
		this.latestAttachStackTraceForDebug = Thread.currentThread().getStackTrace();
	}
	
	public void onDetach() {
		this.latestAttachStackTraceForDebug = null;
	}
	
	public Object getLatestAttachInformation() {
		if (latestAttachStackTraceForDebug != null) {
			Exception e = new Exception();
			e.setStackTrace(latestAttachStackTraceForDebug);
			return Throwables.getStackTraceAsString(e);
		} else {
			return null;
		}
	}
}