flyrain commented on code in PR #7038: URL: https://github.com/apache/iceberg/pull/7038#discussion_r1130201663
########## spark/v3.3/spark/src/main/java/org/apache/iceberg/spark/procedures/ProcedureInput.java: ########## @@ -0,0 +1,201 @@ +/* + * 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.iceberg.spark.procedures; + +import java.lang.reflect.Array; +import java.util.Map; +import java.util.function.BiFunction; +import org.apache.iceberg.relocated.com.google.common.base.Preconditions; +import org.apache.iceberg.relocated.com.google.common.collect.Maps; +import org.apache.iceberg.spark.Spark3Util; +import org.apache.iceberg.spark.Spark3Util.CatalogAndIdentifier; +import org.apache.spark.sql.SparkSession; +import org.apache.spark.sql.catalyst.InternalRow; +import org.apache.spark.sql.catalyst.util.ArrayData; +import org.apache.spark.sql.catalyst.util.MapData; +import org.apache.spark.sql.connector.catalog.CatalogPlugin; +import org.apache.spark.sql.connector.catalog.Identifier; +import org.apache.spark.sql.connector.catalog.TableCatalog; +import org.apache.spark.sql.connector.iceberg.catalog.ProcedureParameter; +import org.apache.spark.sql.types.DataType; +import org.apache.spark.sql.types.DataTypes; + +/** A class that abstracts common logic for working with input to a procedure. */ +class ProcedureInput { + + private static final DataType STRING_ARRAY = DataTypes.createArrayType(DataTypes.StringType); + private static final DataType STRING_MAP = + DataTypes.createMapType(DataTypes.StringType, DataTypes.StringType); + + private final SparkSession spark; + private final TableCatalog catalog; + private final Map<String, Integer> paramOrdinals; + private final InternalRow args; + + ProcedureInput( + SparkSession spark, TableCatalog catalog, ProcedureParameter[] params, InternalRow args) { + this.spark = spark; + this.catalog = catalog; + this.paramOrdinals = computeParamOrdinals(params); + this.args = args; + } + + public boolean isProvided(ProcedureParameter param) { + int ordinal = ordinal(param); + return !args.isNullAt(ordinal); + } + + public boolean bool(ProcedureParameter param, boolean defaultValue) { + validateParamType(param, DataTypes.BooleanType); + int ordinal = ordinal(param); + return args.isNullAt(ordinal) ? defaultValue : args.getBoolean(ordinal); + } + + public String string(ProcedureParameter param, String defaultValue) { + validateParamType(param, DataTypes.StringType); + int ordinal = ordinal(param); + return args.isNullAt(ordinal) ? defaultValue : args.getString(ordinal); + } + + public String[] stringArray(ProcedureParameter param) { + String[] value = stringArray(param, null); + Preconditions.checkArgument(value != null, "Param %s is not set", param.name()); + return value; + } + + public String[] stringArray(ProcedureParameter param, String[] defaultValue) { + validateParamType(param, STRING_ARRAY); + return array( + param, + (array, ordinal) -> array.getUTF8String(ordinal).toString(), + String.class, + defaultValue); + } + + @SuppressWarnings("unchecked") + private <T> T[] array( + ProcedureParameter param, + BiFunction<ArrayData, Integer, T> convertElement, + Class<T> elementClass, + T[] defaultValue) { + + int ordinal = ordinal(param); + + if (args.isNullAt(ordinal)) { + return defaultValue; + } + + ArrayData arrayData = args.getArray(ordinal); + + T[] convertedArray = (T[]) Array.newInstance(elementClass, arrayData.numElements()); + + for (int index = 0; index < arrayData.numElements(); index++) { + convertedArray[index] = convertElement.apply(arrayData, index); + } + + return convertedArray; + } + + public Map<String, String> stringMap(ProcedureParameter param, Map<String, String> defaultValue) { + validateParamType(param, STRING_MAP); + return map( + param, + (keys, ordinal) -> keys.getUTF8String(ordinal).toString(), + (values, ordinal) -> values.getUTF8String(ordinal).toString(), + defaultValue); + } + + private <K, V> Map<K, V> map( + ProcedureParameter param, + BiFunction<ArrayData, Integer, K> convertKey, + BiFunction<ArrayData, Integer, V> convertValue, + Map<K, V> defaultValue) { + + int ordinal = ordinal(param); + + if (args.isNullAt(ordinal)) { + return defaultValue; + } + + MapData mapData = args.getMap(ordinal); + + Map<K, V> convertedMap = Maps.newHashMap(); + + for (int index = 0; index < mapData.numElements(); index++) { + K convertedKey = convertKey.apply(mapData.keyArray(), index); + V convertedValue = convertValue.apply(mapData.valueArray(), index); + convertedMap.put(convertedKey, convertedValue); + } + + return convertedMap; + } + + public Identifier ident(ProcedureParameter param) { + validateParamType(param, DataTypes.StringType); + int ordinal = ordinal(param); + String identifierAsString = args.getString(ordinal); Review Comment: To reuse the method `string()` like this? ``` String identifierAsString = string(param, null); ``` And should we do a null check for identifierAsString here, instead of in method `toCatalogAndIdentifier()`? -- This is an automated message from the Apache Git Service. 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