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/*
* 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.sql.calcite.filtration;
import com.google.common.base.Function;
import com.google.common.collect.BoundType;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Lists;
import com.google.common.collect.Range;
import io.druid.java.util.common.ISE;
import io.druid.query.filter.BoundDimFilter;
import io.druid.query.ordering.StringComparators;
import org.joda.time.Interval;
import java.util.List;
public class Bounds
{
/**
* Negates single-ended Bound filters.
*
* @param bound filter
*
* @return negated filter, or null if this bound is double-ended.
*/
public static BoundDimFilter not(final BoundDimFilter bound)
{
if (bound.getUpper() != null && bound.getLower() != null) {
return null;
} else if (bound.getUpper() != null) {
return new BoundDimFilter(
bound.getDimension(),
bound.getUpper(),
null,
!bound.isUpperStrict(),
false,
null,
bound.getExtractionFn(),
bound.getOrdering()
);
} else {
// bound.getLower() != null
return new BoundDimFilter(
bound.getDimension(),
null,
bound.getLower(),
false,
!bound.isLowerStrict(),
null,
bound.getExtractionFn(),
bound.getOrdering()
);
}
}
public static Range toRange(final BoundDimFilter bound)
{
final BoundValue upper = bound.getUpper() != null ? new BoundValue(bound.getUpper(), bound.getOrdering()) : null;
final BoundValue lower = bound.getLower() != null ? new BoundValue(bound.getLower(), bound.getOrdering()) : null;
if (lower == null) {
return bound.isUpperStrict() ? Range.lessThan(upper) : Range.atMost(upper);
} else if (upper == null) {
return bound.isLowerStrict() ? Range.greaterThan(lower) : Range.atLeast(lower);
} else {
return Range.range(
lower, bound.isLowerStrict() ? BoundType.OPEN : BoundType.CLOSED,
upper, bound.isUpperStrict() ? BoundType.OPEN : BoundType.CLOSED
);
}
}
public static List> toRanges(final List bounds)
{
return ImmutableList.copyOf(
Lists.transform(
bounds,
new Function>()
{
@Override
public Range apply(BoundDimFilter bound)
{
return toRange(bound);
}
}
)
);
}
public static BoundDimFilter toFilter(final BoundRefKey boundRefKey, final Range range)
{
return new BoundDimFilter(
boundRefKey.getDimension(),
range.hasLowerBound() ? range.lowerEndpoint().getValue() : null,
range.hasUpperBound() ? range.upperEndpoint().getValue() : null,
range.hasLowerBound() && range.lowerBoundType() == BoundType.OPEN,
range.hasUpperBound() && range.upperBoundType() == BoundType.OPEN,
null,
boundRefKey.getExtractionFn(),
boundRefKey.getComparator()
);
}
public static BoundDimFilter equalTo(final BoundRefKey boundRefKey, final String value)
{
return new BoundDimFilter(
boundRefKey.getDimension(),
value,
value,
false,
false,
null,
boundRefKey.getExtractionFn(),
boundRefKey.getComparator()
);
}
public static BoundDimFilter greaterThan(final BoundRefKey boundRefKey, final String value)
{
return new BoundDimFilter(
boundRefKey.getDimension(),
value,
null,
true,
false,
null,
boundRefKey.getExtractionFn(),
boundRefKey.getComparator()
);
}
public static BoundDimFilter greaterThanOrEqualTo(final BoundRefKey boundRefKey, final String value)
{
return new BoundDimFilter(
boundRefKey.getDimension(),
value,
null,
false,
false,
null,
boundRefKey.getExtractionFn(),
boundRefKey.getComparator()
);
}
public static BoundDimFilter lessThan(final BoundRefKey boundRefKey, final String value)
{
return new BoundDimFilter(
boundRefKey.getDimension(),
null,
value,
false,
true,
null,
boundRefKey.getExtractionFn(),
boundRefKey.getComparator()
);
}
public static BoundDimFilter lessThanOrEqualTo(final BoundRefKey boundRefKey, final String value)
{
return new BoundDimFilter(
boundRefKey.getDimension(),
null,
value,
false,
false,
null,
boundRefKey.getExtractionFn(),
boundRefKey.getComparator()
);
}
public static BoundDimFilter interval(final BoundRefKey boundRefKey, final Interval interval)
{
if (!boundRefKey.getComparator().equals(StringComparators.NUMERIC)) {
// Interval comparison only works with NUMERIC comparator.
throw new ISE("Comparator must be NUMERIC but was[%s]", boundRefKey.getComparator());
}
return new BoundDimFilter(
boundRefKey.getDimension(),
String.valueOf(interval.getStartMillis()),
String.valueOf(interval.getEndMillis()),
false,
true,
null,
boundRefKey.getExtractionFn(),
boundRefKey.getComparator()
);
}
}
