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[parquet] Support to enable parquet bloomfilter
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paimon-format/src/main/java/org/apache/paimon/format/parquet/ColumnConfigParser.java
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| @@ -0,0 +1,77 @@ | ||
| /* | ||
| * 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.paimon.format.parquet; | ||
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| import org.apache.hadoop.conf.Configuration; | ||
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| import java.util.ArrayList; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.function.BiConsumer; | ||
| import java.util.function.Function; | ||
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| /** | ||
| * Parses the specified key-values in the format of root.key#column.path from a {@link | ||
| * Configuration} object. | ||
| * | ||
| * <p>NOTE: The file was copied from Apache parquet project. | ||
| */ | ||
| public class ColumnConfigParser { | ||
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| private static class ConfigHelper<T> { | ||
| private final String prefix; | ||
| private final Function<String, T> function; | ||
| private final BiConsumer<String, T> consumer; | ||
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| public ConfigHelper( | ||
| String prefix, Function<String, T> function, BiConsumer<String, T> consumer) { | ||
| this.prefix = prefix; | ||
| this.function = function; | ||
| this.consumer = consumer; | ||
| } | ||
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| public void processKey(String key) { | ||
| if (key.startsWith(prefix)) { | ||
| String columnPath = key.substring(prefix.length()); | ||
| T value = function.apply(key); | ||
| consumer.accept(columnPath, value); | ||
| } | ||
| } | ||
| } | ||
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| private final List<ConfigHelper<?>> helpers = new ArrayList<>(); | ||
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| public <T> ColumnConfigParser withColumnConfig( | ||
| String rootKey, Function<String, T> function, BiConsumer<String, T> consumer) { | ||
| helpers.add(new ConfigHelper<T>(rootKey + '#', function, consumer)); | ||
| return this; | ||
| } | ||
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| public void parseConfig(Configuration conf) { | ||
| for (Map.Entry<String, String> entry : conf) { | ||
| for (ConfigHelper<?> helper : helpers) { | ||
| // We retrieve the value from function instead of parsing from the string here to | ||
| // use the exact | ||
| // implementations | ||
| // in Configuration | ||
| helper.processKey(entry.getKey()); | ||
| } | ||
| } | ||
| } | ||
| } |
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