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/**
* Copyright 2003-2009 Terracotta, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.quartz.utils.counter.sampled;
/**
* An implementation of {@link SampledRateCounter}
*
* @author Abhishek Sanoujam
* @since 1.8
*
*/
public class SampledRateCounterImpl extends SampledCounterImpl implements SampledRateCounter {
private static final long serialVersionUID = 6531350452676920607L;
private static final String OPERATION_NOT_SUPPORTED_MSG = "This operation is not supported. Use SampledCounter Or Counter instead";
private long numeratorValue;
private long denominatorValue;
/**
* Constructor accepting the config
*
* @param config
*/
public SampledRateCounterImpl(SampledRateCounterConfig config) {
super(config);
}
/**
* {@inheritDoc}
*/
public synchronized void setValue(long numerator, long denominator) {
this.numeratorValue = numerator;
this.denominatorValue = denominator;
}
/**
* {@inheritDoc}
*/
public synchronized void increment(long numerator, long denominator) {
this.numeratorValue += numerator;
this.denominatorValue += denominator;
}
/**
* {@inheritDoc}
*/
public synchronized void decrement(long numerator, long denominator) {
this.numeratorValue -= numerator;
this.denominatorValue -= denominator;
}
/**
* {@inheritDoc}
*/
public synchronized void setDenominatorValue(long newValue) {
this.denominatorValue = newValue;
}
/**
* {@inheritDoc}
*/
public synchronized void setNumeratorValue(long newValue) {
this.numeratorValue = newValue;
}
/**
* {@inheritDoc}
*/
@Override
public synchronized long getValue() {
return denominatorValue == 0 ? 0 : (numeratorValue / denominatorValue);
}
/**
* {@inheritDoc}
*/
@Override
public synchronized long getAndReset() {
long prevVal = getValue();
setValue(0, 0);
return prevVal;
}
// ====== unsupported operations. These operations need multiple params for
// this class
/**
* throws {@link UnsupportedOperationException}
*/
@Override
public long getAndSet(long newValue) {
throw new UnsupportedOperationException(OPERATION_NOT_SUPPORTED_MSG);
}
/**
* throws {@link UnsupportedOperationException}
*/
@Override
public synchronized void setValue(long newValue) {
throw new UnsupportedOperationException(OPERATION_NOT_SUPPORTED_MSG);
}
/**
* throws {@link UnsupportedOperationException}
*/
@Override
public long decrement() {
throw new UnsupportedOperationException(OPERATION_NOT_SUPPORTED_MSG);
}
/**
* throws {@link UnsupportedOperationException}
*/
@Override
public long decrement(long amount) {
throw new UnsupportedOperationException(OPERATION_NOT_SUPPORTED_MSG);
}
/**
* throws {@link UnsupportedOperationException}
*/
public long getMaxValue() {
throw new UnsupportedOperationException(OPERATION_NOT_SUPPORTED_MSG);
}
/**
* throws {@link UnsupportedOperationException}
*/
public long getMinValue() {
throw new UnsupportedOperationException(OPERATION_NOT_SUPPORTED_MSG);
}
/**
* throws {@link UnsupportedOperationException}
*/
@Override
public long increment() {
throw new UnsupportedOperationException(OPERATION_NOT_SUPPORTED_MSG);
}
/**
* throws {@link UnsupportedOperationException}
*/
@Override
public long increment(long amount) {
throw new UnsupportedOperationException(OPERATION_NOT_SUPPORTED_MSG);
}
}