/*
* RHQ Management Platform
* Copyright (C) 2005-2008 Red Hat, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
package org.rhq.enterprise.server.alert.engine.model;
import org.rhq.core.domain.alert.AlertConditionOperator;
/**
* @author Joseph Marques
*/
/*
* If even one element in the Measurement cache were a Double, then they all need to be compared
*/
public abstract class NumericDoubleCacheElement extends AbstractCacheElement<Double> {
public NumericDoubleCacheElement(AlertConditionOperator operator, Double value, int conditionTriggerId) {
super(operator, value, conditionTriggerId);
}
@Override
public boolean matches(Double providedValue, Object... extraParams) {
/*
* allow null/NaN/infinite Numeric elements to be processed;
*
* this will support baseline-based AlertConditions whose baselines haven't been calculated yet
*/
if (alertConditionValue == null || alertConditionValue.isNaN() || alertConditionValue.isInfinite()) {
return false;
}
if (providedValue == null || providedValue.isNaN() || providedValue.isInfinite()) {
return false;
}
if (alertConditionOperator == AlertConditionOperator.GREATER_THAN) {
return (providedValue.compareTo(alertConditionValue) > 0);
} else if (alertConditionOperator == AlertConditionOperator.LESS_THAN) {
return (providedValue.compareTo(alertConditionValue) < 0);
} else if (alertConditionOperator == AlertConditionOperator.EQUALS) {
return (providedValue.compareTo(alertConditionValue) == 0);
} else if (alertConditionOperator == AlertConditionOperator.CHANGES) {
boolean result;
result = (alertConditionValue.compareTo(providedValue) != 0);
alertConditionValue = providedValue;
return result;
} else {
throw new UnsupportedAlertConditionOperatorException(getClass().getSimpleName() + " does not yet support "
+ alertConditionOperator);
}
}
@Override
public AlertConditionOperator.Type getOperatorSupportsType(AlertConditionOperator operator) {
if ((operator == AlertConditionOperator.GREATER_THAN) || (operator == AlertConditionOperator.EQUALS)
|| (operator == AlertConditionOperator.LESS_THAN) || (operator == AlertConditionOperator.CHANGES)) {
return operator.getDefaultType();
}
return AlertConditionOperator.Type.NONE;
}
}