[FLINK-19606][table-runtime-blink] Refactor JoinConditionWithFullFilters from an inner class in AbstractStreamingJoinOperator to a common utility class. #15752
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| /* | ||
| * 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. | ||
| */ | ||
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| package org.apache.flink.table.runtime.operators.join; | ||
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| import org.apache.flink.api.common.functions.AbstractRichFunction; | ||
| import org.apache.flink.configuration.Configuration; | ||
| import org.apache.flink.table.data.RowData; | ||
| import org.apache.flink.table.data.binary.NullAwareGetters; | ||
| import org.apache.flink.table.runtime.generated.JoinCondition; | ||
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| /** Utility to take null filters into consideration when apply join condition. */ | ||
| public class JoinConditionWithNullFilters extends AbstractRichFunction implements JoinCondition { | ||
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| private final JoinCondition backingJoinCondition; | ||
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| /** Should filter null keys. */ | ||
| private final int[] nullFilterKeys; | ||
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| /** No keys need to filter null. */ | ||
| private final boolean nullSafe; | ||
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| /** Filter null to all keys. */ | ||
| private final boolean filterAllNulls; | ||
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| private NullAwareGetters joinKey; | ||
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| public JoinConditionWithNullFilters( | ||
| JoinCondition backingJoinCondition, boolean[] filterNullKeys) { | ||
| this.backingJoinCondition = backingJoinCondition; | ||
| this.nullFilterKeys = NullAwareJoinHelper.getNullFilterKeys(filterNullKeys); | ||
| this.nullSafe = nullFilterKeys.length == 0; | ||
| this.filterAllNulls = nullFilterKeys.length == filterNullKeys.length; | ||
| } | ||
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| @Override | ||
| public void open(Configuration parameters) throws Exception { | ||
| super.open(parameters); | ||
| backingJoinCondition.open(parameters); | ||
| } | ||
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| @Override | ||
| public void close() throws Exception { | ||
| super.close(); | ||
| backingJoinCondition.close(); | ||
| } | ||
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| @Override | ||
| public boolean apply(RowData left, RowData right) { | ||
| if (!nullSafe) { // is not null safe, return false if any null exists | ||
| // key is always BinaryRowData | ||
| if (filterAllNulls ? joinKey.anyNull() : joinKey.anyNull(nullFilterKeys)) { | ||
| // find null present, return false directly | ||
| return false; | ||
| } | ||
| } | ||
| // test condition | ||
| return backingJoinCondition.apply(left, right); | ||
| } | ||
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| public void setCurrentJoinKey(NullAwareGetters joinKey) { | ||
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| this.joinKey = joinKey; | ||
| } | ||
| } | ||
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This class can wrap
setRuntimeContexttoo.There was a problem hiding this comment.
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Done