io.druid.query.filter.OrDimFilter 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.filter;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.google.common.base.Joiner;
import com.google.common.base.Preconditions;
import com.google.common.collect.RangeSet;
import com.google.common.collect.TreeRangeSet;
import io.druid.java.util.common.StringUtils;
import io.druid.query.Druids;
import io.druid.segment.filter.Filters;
import io.druid.segment.filter.OrFilter;
import java.util.List;
/**
*/
public class OrDimFilter implements DimFilter
{
private static final Joiner OR_JOINER = Joiner.on(" || ");
final private List fields;
@JsonCreator
public OrDimFilter(
@JsonProperty("fields") List fields
)
{
fields = DimFilters.filterNulls(fields);
Preconditions.checkArgument(fields.size() > 0, "OR operator requires at least one field");
this.fields = fields;
}
@JsonProperty
public List getFields()
{
return fields;
}
@Override
public byte[] getCacheKey()
{
return DimFilterUtils.computeCacheKey(DimFilterUtils.OR_CACHE_ID, fields);
}
@Override
public DimFilter optimize()
{
List elements = DimFilters.optimize(fields);
return elements.size() == 1 ? elements.get(0) : Druids.newOrDimFilterBuilder().fields(elements).build();
}
@Override
public Filter toFilter()
{
return new OrFilter(Filters.toFilters(fields));
}
@Override
public RangeSet getDimensionRangeSet(String dimension)
{
RangeSet retSet = TreeRangeSet.create();
for (DimFilter field : fields) {
RangeSet rangeSet = field.getDimensionRangeSet(dimension);
if (rangeSet == null) {
return null;
} else {
retSet.addAll(rangeSet);
}
}
return retSet;
}
@Override
public boolean equals(Object o)
{
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
OrDimFilter that = (OrDimFilter) o;
if (fields != null ? !fields.equals(that.fields) : that.fields != null) {
return false;
}
return true;
}
@Override
public int hashCode()
{
return fields != null ? fields.hashCode() : 0;
}
@Override
public String toString()
{
return StringUtils.format("(%s)", OR_JOINER.join(fields));
}
}