/*
* Copyright 2005-2010 the original author or authors.
*
* 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.dozer.stats;
import org.apache.commons.lang.builder.EqualsBuilder;
import org.apache.commons.lang.builder.ReflectionToStringBuilder;
import org.apache.commons.lang.builder.ToStringStyle;
import java.util.HashSet;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
/**
* Internal class that provides an interface to a single statistic. Holds all of the statistic entries for the
* statistic. Only intended for internal use.
*
* @author tierney.matt
* @author dmitry.buzdin
*/
public class Statistic {
private final StatisticType type;
private final ConcurrentMap<Object, StatisticEntry> entriesMap = new ConcurrentHashMap<Object, StatisticEntry>();
public Statistic(StatisticType type) {
this.type = type;
}
public StatisticType getType() {
return type;
}
public StatisticEntry increment(Object statisticEntryKey, long value) {
if (statisticEntryKey == null) {
throw new IllegalArgumentException("statistic entry key must be specified");
}
// Get the StatisticEntry object which contains the actual value.
// If it doesn't already exist, create it so that it can be incremented
StatisticEntry statisticEntry = entriesMap.get(statisticEntryKey);
if (statisticEntry == null) {
StatisticEntry newStatisticEntry = new StatisticEntry(statisticEntryKey);
statisticEntry = entriesMap.putIfAbsent(statisticEntryKey, newStatisticEntry);
if (statisticEntry == null) {
statisticEntry = newStatisticEntry;
}
}
// Increment the actual value
statisticEntry.increment(value);
return statisticEntry;
}
public void clear() {
entriesMap.clear();
}
public Set<StatisticEntry> getEntries() {
return new HashSet<StatisticEntry>(entriesMap.values());
}
public StatisticEntry getEntry(Object entryKey) {
return entriesMap.get(entryKey);
}
public long getStatisticValue(Object entryKey) {
StatisticEntry statisticEntry = entriesMap.get(entryKey);
return statisticEntry != null ? statisticEntry.getValue() : 0;
}
@Override
public boolean equals(Object object) {
if ((this == object)) {
return true;
}
if (!(object instanceof Statistic)) {
return false;
}
Statistic entry = (Statistic) object;
return new EqualsBuilder().append(this.getType(), entry.getType()).isEquals();
}
@Override
public int hashCode() {
return type.hashCode();
}
@Override
public String toString() {
return ReflectionToStringBuilder.toString(this, ToStringStyle.MULTI_LINE_STYLE);
}
}