io.druid.query.groupby.having.GreaterThanHavingSpec Maven / Gradle / Ivy
/*
* Licensed to Metamarkets Group Inc. (Metamarkets) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Metamarkets licenses this file
* to you 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 io.druid.query.groupby.having;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import io.druid.data.input.Row;
/**
* The ">" operator in a "having" clause. This is similar to SQL's "having aggregation > value",
* except that an aggregation in SQL is an expression instead of an aggregation name as in Druid.
*/
public class GreaterThanHavingSpec extends BaseHavingSpec
{
private final String aggregationName;
private final Number value;
@JsonCreator
public GreaterThanHavingSpec(
@JsonProperty("aggregation") String aggName,
@JsonProperty("value") Number value
)
{
this.aggregationName = aggName;
this.value = value;
}
@JsonProperty("aggregation")
public String getAggregationName()
{
return aggregationName;
}
@JsonProperty("value")
public Number getValue()
{
return value;
}
@Override
public boolean eval(Row row)
{
return HavingSpecMetricComparator.compare(row, aggregationName, value) > 0;
}
/**
* This method treats internal value as double mainly for ease of test.
*/
@Override
public boolean equals(Object o)
{
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
GreaterThanHavingSpec that = (GreaterThanHavingSpec) o;
if (value != null && that.value != null) {
return Double.compare(value.doubleValue(), that.value.doubleValue()) == 0;
}
if (value == null && that.value == null) {
return true;
}
return false;
}
@Override
public int hashCode()
{
int result = aggregationName != null ? aggregationName.hashCode() : 0;
result = 31 * result + (value != null ? value.hashCode() : 0);
return result;
}
@Override
public String toString()
{
final StringBuilder sb = new StringBuilder();
sb.append("GreaterThanHavingSpec");
sb.append("{aggregationName='").append(aggregationName).append('\'');
sb.append(", value=").append(value);
sb.append('}');
return sb.toString();
}
}