| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF 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 org.apache.druid.query.groupby.having; |
| |
| import com.fasterxml.jackson.annotation.JsonCreator; |
| import com.fasterxml.jackson.annotation.JsonProperty; |
| import com.google.common.base.Preconditions; |
| import it.unimi.dsi.fastutil.ints.Int2ObjectArrayMap; |
| import it.unimi.dsi.fastutil.ints.Int2ObjectMap; |
| import org.apache.druid.common.guava.SettableSupplier; |
| import org.apache.druid.query.aggregation.AggregatorFactory; |
| import org.apache.druid.query.cache.CacheKeyBuilder; |
| import org.apache.druid.query.filter.DimFilter; |
| import org.apache.druid.query.filter.ValueMatcher; |
| import org.apache.druid.query.groupby.GroupByQuery; |
| import org.apache.druid.query.groupby.ResultRow; |
| import org.apache.druid.query.groupby.epinephelinae.RowBasedGrouperHelper; |
| |
| import java.util.Objects; |
| import java.util.function.Function; |
| |
| public class DimFilterHavingSpec implements HavingSpec |
| { |
| private static final boolean DEFAULT_FINALIZE = true; |
| |
| private final DimFilter dimFilter; |
| private final boolean finalize; |
| private final SettableSupplier<ResultRow> rowSupplier = new SettableSupplier<>(); |
| |
| private Int2ObjectMap<Function<Object, Object>> finalizers = new Int2ObjectArrayMap<>(); |
| private ValueMatcher matcher = null; |
| private int evalCount; |
| |
| @JsonCreator |
| public DimFilterHavingSpec( |
| @JsonProperty("filter") final DimFilter dimFilter, |
| @JsonProperty("finalize") final Boolean finalize |
| ) |
| { |
| this.dimFilter = Preconditions.checkNotNull(dimFilter, "filter"); |
| this.finalize = finalize == null ? DEFAULT_FINALIZE : finalize; |
| } |
| |
| @JsonProperty("filter") |
| public DimFilter getDimFilter() |
| { |
| return dimFilter; |
| } |
| |
| @JsonProperty |
| public boolean isFinalize() |
| { |
| return finalize; |
| } |
| |
| @Override |
| public void setQuery(GroupByQuery query) |
| { |
| this.finalizers = new Int2ObjectArrayMap<>(query.getAggregatorSpecs().size()); |
| |
| for (AggregatorFactory factory : query.getAggregatorSpecs()) { |
| final int i = query.getResultRowSignature().indexOf(factory.getName()); |
| this.finalizers.put(i, factory::finalizeComputation); |
| } |
| |
| this.matcher = dimFilter.toFilter().makeMatcher( |
| RowBasedGrouperHelper.createResultRowBasedColumnSelectorFactory( |
| query, |
| rowSupplier |
| ) |
| ); |
| } |
| |
| @Override |
| public boolean eval(final ResultRow row) |
| { |
| int oldEvalCount = evalCount; |
| evalCount++; |
| |
| if (finalize && !finalizers.isEmpty()) { |
| // Create finalized copy. |
| final ResultRow finalizedCopy = row.copy(); |
| |
| for (Int2ObjectMap.Entry<Function<Object, Object>> entry : finalizers.int2ObjectEntrySet()) { |
| finalizedCopy.set(entry.getIntKey(), entry.getValue().apply(row.get(entry.getIntKey()))); |
| } |
| |
| rowSupplier.set(finalizedCopy); |
| } else { |
| rowSupplier.set(row); |
| } |
| |
| final boolean retVal = matcher.matches(); |
| |
| if (evalCount != oldEvalCount + 1) { |
| // Oops, someone was using this from two different threads, bad caller. |
| throw new IllegalStateException("concurrent 'eval' calls not permitted!"); |
| } |
| |
| return retVal; |
| } |
| |
| @Override |
| public boolean equals(final Object o) |
| { |
| if (this == o) { |
| return true; |
| } |
| if (o == null || getClass() != o.getClass()) { |
| return false; |
| } |
| final DimFilterHavingSpec that = (DimFilterHavingSpec) o; |
| return finalize == that.finalize && |
| Objects.equals(dimFilter, that.dimFilter); |
| } |
| |
| @Override |
| public int hashCode() |
| { |
| return Objects.hash(dimFilter, finalize); |
| } |
| |
| @Override |
| public String toString() |
| { |
| return "DimFilterHavingSpec{" + |
| "dimFilter=" + dimFilter + |
| ", finalize=" + finalize + |
| '}'; |
| } |
| |
| @Override |
| public byte[] getCacheKey() |
| { |
| return new CacheKeyBuilder(HavingSpecUtil.CACHE_TYPE_ID_DIM_FILTER) |
| .appendCacheable(dimFilter) |
| .appendByte((byte) (isFinalize() ? 1 : 0)) |
| .build(); |
| } |
| } |