/*
* Copyright 2013 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.springframework.xd.analytics.metrics.core;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.springframework.data.annotation.PersistenceConstructor;
import org.springframework.util.Assert;
/**
* Represents the data stored in a Counter for multiple field-value pairs. Operations on it are expected to increment or
* decrement the value associated with a specific field name. The name property is a friendly user assigned name, and
* should be unique.
*
* @author Mark Pollack
*
*/
public final class FieldValueCounter implements Metric {
private final String name;
private final Map<String, Double> fieldValueCount;
public FieldValueCounter(String name) {
Assert.notNull(name);
this.name = name;
this.fieldValueCount = new ConcurrentHashMap<String, Double>();
}
@PersistenceConstructor
public FieldValueCounter(String name, Map<String, Double> fieldValueCount) {
Assert.notNull(name);
Assert.notNull(fieldValueCount);
this.name = name;
this.fieldValueCount = fieldValueCount;
}
/**
* @return the name
*/
public String getName() {
return name;
}
/**
* @return the fieldValueCount
*/
public Map<String, Double> getFieldValueCount() {
return this.fieldValueCount;
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
return "FieldValueCounter [name=" + name + ", fieldValueCount="
+ fieldValueCount + "]";
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#hashCode()
*/
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((name == null) ? 0 : name.hashCode());
return result;
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#equals(java.lang.Object)
*/
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (!(obj instanceof FieldValueCounter)) {
return false;
}
FieldValueCounter other = (FieldValueCounter) obj;
if (name == null) {
if (other.name != null) {
return false;
}
}
else if (!name.equals(other.name)) {
return false;
}
return true;
}
}