manuzhang commented on code in PR #14984: URL: https://github.com/apache/iceberg/pull/14984#discussion_r3809777233
########## spark/v4.2/spark/src/main/java/org/apache/iceberg/spark/SparkSessionCatalog.java: ########## @@ -0,0 +1,590 @@ +/* + * 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; + +import java.util.Arrays; +import java.util.LinkedHashMap; +import java.util.Map; +import java.util.Set; +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.hive.conf.HiveConf; +import org.apache.iceberg.CatalogProperties; +import org.apache.iceberg.CatalogUtil; +import org.apache.iceberg.catalog.Catalog; +import org.apache.iceberg.relocated.com.google.common.base.Preconditions; +import org.apache.iceberg.relocated.com.google.common.collect.Sets; +import org.apache.iceberg.spark.source.HasIcebergCatalog; +import org.apache.spark.sql.SparkSession; +import org.apache.spark.sql.catalyst.analysis.NamespaceAlreadyExistsException; +import org.apache.spark.sql.catalyst.analysis.NoSuchFunctionException; +import org.apache.spark.sql.catalyst.analysis.NoSuchNamespaceException; +import org.apache.spark.sql.catalyst.analysis.NoSuchTableException; +import org.apache.spark.sql.catalyst.analysis.NoSuchViewException; +import org.apache.spark.sql.catalyst.analysis.NonEmptyNamespaceException; +import org.apache.spark.sql.catalyst.analysis.TableAlreadyExistsException; +import org.apache.spark.sql.catalyst.analysis.ViewAlreadyExistsException; +import org.apache.spark.sql.connector.catalog.CatalogExtension; +import org.apache.spark.sql.connector.catalog.CatalogPlugin; +import org.apache.spark.sql.connector.catalog.FunctionCatalog; +import org.apache.spark.sql.connector.catalog.Identifier; +import org.apache.spark.sql.connector.catalog.NamespaceChange; +import org.apache.spark.sql.connector.catalog.StagedTable; +import org.apache.spark.sql.connector.catalog.StagingTableCatalog; +import org.apache.spark.sql.connector.catalog.SupportsNamespaces; +import org.apache.spark.sql.connector.catalog.Table; +import org.apache.spark.sql.connector.catalog.TableCatalog; +import org.apache.spark.sql.connector.catalog.TableChange; +import org.apache.spark.sql.connector.catalog.TableSummary; +import org.apache.spark.sql.connector.catalog.View; +import org.apache.spark.sql.connector.catalog.ViewCatalog; +import org.apache.spark.sql.connector.catalog.functions.UnboundFunction; +import org.apache.spark.sql.connector.expressions.Transform; +import org.apache.spark.sql.types.StructType; +import org.apache.spark.sql.util.CaseInsensitiveStringMap; + +/** + * A Spark catalog that can also load non-Iceberg tables. + * + * @param <T> CatalogPlugin class to avoid casting to TableCatalog, FunctionCatalog and + * SupportsNamespaces. + */ +public class SparkSessionCatalog< + T extends TableCatalog & FunctionCatalog & SupportsNamespaces & ViewCatalog> + extends BaseCatalog implements CatalogExtension { + private static final String[] DEFAULT_NAMESPACE = new String[] {"default"}; + + private String catalogName = null; + private TableCatalog icebergCatalog = null; + private StagingTableCatalog asStagingCatalog = null; + private ViewCatalog asViewCatalog = null; + private T sessionCatalog = null; + private boolean createParquetAsIceberg = false; + private boolean createAvroAsIceberg = false; + private boolean createOrcAsIceberg = false; + + /** + * Build a {@link SparkCatalog} to be used for Iceberg operations. + * + * <p>The default implementation creates a new SparkCatalog with the session catalog's name and + * options. + * + * @param name catalog name + * @param options catalog options + * @return a SparkCatalog to be used for Iceberg tables + */ + protected TableCatalog buildSparkCatalog(String name, CaseInsensitiveStringMap options) { + SparkCatalog newCatalog = new SparkCatalog(); + newCatalog.initialize(name, options); + return newCatalog; + } + + @Override + public String[] defaultNamespace() { + return DEFAULT_NAMESPACE; + } + + @Override + public String[][] listNamespaces() throws NoSuchNamespaceException { + return getSessionCatalog().listNamespaces(); + } + + @Override + public String[][] listNamespaces(String[] namespace) throws NoSuchNamespaceException { + return getSessionCatalog().listNamespaces(namespace); + } + + @Override + public boolean namespaceExists(String[] namespace) { + return getSessionCatalog().namespaceExists(namespace); + } + + @Override + public Map<String, String> loadNamespaceMetadata(String[] namespace) + throws NoSuchNamespaceException { + return getSessionCatalog().loadNamespaceMetadata(namespace); + } + + @Override + public void createNamespace(String[] namespace, Map<String, String> metadata) + throws NamespaceAlreadyExistsException { + getSessionCatalog().createNamespace(namespace, metadata); + } + + @Override + public void alterNamespace(String[] namespace, NamespaceChange... changes) + throws NoSuchNamespaceException { + getSessionCatalog().alterNamespace(namespace, changes); + } + + @Override + public boolean dropNamespace(String[] namespace, boolean cascade) + throws NoSuchNamespaceException, NonEmptyNamespaceException { + return getSessionCatalog().dropNamespace(namespace, cascade); + } + + @Override + public Identifier[] listTables(String[] namespace) throws NoSuchNamespaceException { + // delegate to the session catalog because all tables share the same namespace + return getSessionCatalog().listTables(namespace); + } + + @Override + public TableSummary[] listTableSummaries(String[] namespace) + throws NoSuchNamespaceException, NoSuchTableException { + Set<Identifier> viewIdentifiers = Sets.newLinkedHashSet(); + viewIdentifiers.addAll(Arrays.asList(listViews(namespace))); + return Arrays.stream(getSessionCatalog().listTableSummaries(namespace)) + .filter(summary -> !viewIdentifiers.contains(summary.identifier())) + .filter(summary -> !isViewType(summary.tableType())) + .toArray(TableSummary[]::new); + } + + @Override + public TableSummary[] listRelationSummaries(String[] namespace) + throws NoSuchNamespaceException, NoSuchTableException { + Map<Identifier, TableSummary> summaries = new LinkedHashMap<>(); + for (TableSummary summary : getSessionCatalog().listTableSummaries(namespace)) { + summaries.put(summary.identifier(), summary); + } + + for (Identifier identifier : listViews(namespace)) { + TableSummary summary = summaries.get(identifier); + summaries.put(identifier, TableSummary.of(identifier, viewType(identifier, summary))); + } + + return summaries.values().toArray(new TableSummary[0]); + } + + private static boolean isViewType(String tableType) { + return TableSummary.VIEW_TABLE_TYPE.equals(tableType) + || TableSummary.METRIC_VIEW_TABLE_TYPE.equals(tableType); + } + + private String viewType(Identifier identifier, TableSummary summary) { + if (summary != null && isViewType(summary.tableType())) { + return summary.tableType(); + } + + try { + return loadView(identifier) Review Comment: Fixed as recommended. -- This is an automated message from the Apache Git Service. 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