MethodSensorDataComparatorEnum.java

package rocks.inspectit.shared.cs.communication.comparator;

import java.util.Comparator;
import java.util.List;

import rocks.inspectit.shared.all.cmr.model.MethodIdent;
import rocks.inspectit.shared.all.cmr.service.ICachedDataService;
import rocks.inspectit.shared.all.communication.MethodSensorData;
import rocks.inspectit.shared.all.util.ObjectUtils;

/**
 * Comparators for {@link MethodSensorData}.
 *
 * @author Ivan Senic
 *
 */
public enum MethodSensorDataComparatorEnum implements IDataComparator<MethodSensorData>, Comparator<MethodIdent> {

	/**
	 * Sort by package name.
	 */
	PACKAGE,

	/**
	 * Sort by class name.
	 */
	CLASS,

	/**
	 * Sort by method name.
	 */
	METHOD;

	/**
	 * {@inheritDoc}
	 */
	@Override
	public int compare(MethodSensorData o1, MethodSensorData o2, ICachedDataService cachedDataService) {
		if (null == cachedDataService) {
			return 0;
		}
		MethodIdent methodIdent1 = cachedDataService.getMethodIdentForId(o1.getMethodIdent());
		MethodIdent methodIdent2 = cachedDataService.getMethodIdentForId(o2.getMethodIdent());
		if ((null != methodIdent1) && (null != methodIdent2)) {
			return compare(methodIdent1, methodIdent2);
		} else {
			return 0;
		}
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public int compare(MethodIdent methodIdent1, MethodIdent methodIdent2) {
		switch (this) {
		case PACKAGE:
			return ObjectUtils.compare(methodIdent1.getPackageName(), methodIdent2.getPackageName());
		case CLASS:
			return ObjectUtils.compare(methodIdent1.getClassName(), methodIdent2.getClassName());
		case METHOD:
			int result = ObjectUtils.compare(methodIdent1.getMethodName(), methodIdent2.getMethodName());
			if (0 != result) {
				return result;
			} else {
				List<String> parameterList1 = methodIdent1.getParameters();
				List<String> parameterList2 = methodIdent2.getParameters();
				return ObjectUtils.compare(parameterList1, parameterList2);
			}
		default:
			return 0;
		}
	}

}