/*
* 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
*/
public abstract class AbstractEnumCacheElement<E extends Enum<E>> extends AbstractCacheElement<E> {
public AbstractEnumCacheElement(AlertConditionOperator operator, E value, int conditionTriggerId) {
super(operator, value, conditionTriggerId);
}
public AbstractEnumCacheElement(AlertConditionOperator operator, Object operatorOption, E value,
int conditionTriggerId) {
super(operator, operatorOption, value, conditionTriggerId);
}
@Override
public boolean matches(E providedValue, Object... extraParams) {
if (providedValue == null) {
return false;
}
if (alertConditionOperator == AlertConditionOperator.EQUALS) {
return providedValue.equals(alertConditionValue);
} else if (alertConditionOperator == AlertConditionOperator.CHANGES) {
boolean result;
if (null == alertConditionValue) {
result = (null != providedValue);
} else {
result = !alertConditionValue.equals(providedValue);
}
alertConditionValue = providedValue;
return result;
} else if (alertConditionOperator == AlertConditionOperator.LESS_THAN_OR_EQUAL_TO) {
return (providedValue.ordinal() <= alertConditionValue.ordinal());
} else if (alertConditionOperator == AlertConditionOperator.LESS_THAN) {
return (providedValue.ordinal() < alertConditionValue.ordinal());
} else if (alertConditionOperator == AlertConditionOperator.GREATER_THAN) {
return (providedValue.ordinal() > alertConditionValue.ordinal());
} else if (alertConditionOperator == AlertConditionOperator.GREATER_THAN_OR_EQUAL_TO) {
return (providedValue.ordinal() >= alertConditionValue.ordinal());
} else if (alertConditionOperator == AlertConditionOperator.CHANGES_TO) {
boolean result;
// if the last value recorded doesn't equal the operator option, but the current value does
result = !alertConditionOperatorOption.equals(alertConditionValue)
&& alertConditionOperatorOption.equals(providedValue);
alertConditionValue = providedValue;
return result;
} else if (alertConditionOperator == AlertConditionOperator.CHANGES_FROM) {
Boolean result;
// if the last value recorded equals the operator option, but the current value does not
result = alertConditionOperatorOption.equals(alertConditionValue)
&& !alertConditionOperatorOption.equals(providedValue);
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.LESS_THAN_OR_EQUAL_TO)
|| (operator == AlertConditionOperator.LESS_THAN) || (operator == AlertConditionOperator.EQUALS)
|| (operator == AlertConditionOperator.GREATER_THAN)
|| (operator == AlertConditionOperator.GREATER_THAN_OR_EQUAL_TO)
|| (operator == AlertConditionOperator.CHANGES) || (operator == AlertConditionOperator.CHANGES_TO)
|| (operator == AlertConditionOperator.CHANGES_FROM)) {
return operator.getDefaultType();
}
return AlertConditionOperator.Type.NONE;
}
}