| /* |
| * 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.ignite.internal.catalog.commands; |
| |
| import static org.apache.ignite.internal.catalog.commands.CatalogUtils.fromParams; |
| import static org.apache.ignite.internal.catalog.commands.CatalogUtils.schemaOrThrow; |
| import static org.apache.ignite.internal.catalog.commands.CatalogUtils.tableOrThrow; |
| import static org.apache.ignite.internal.lang.IgniteStringFormatter.format; |
| import static org.apache.ignite.internal.util.CollectionUtils.copyOrNull; |
| import static org.apache.ignite.internal.util.CollectionUtils.nullOrEmpty; |
| |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| import org.apache.ignite.internal.catalog.Catalog; |
| import org.apache.ignite.internal.catalog.CatalogCommand; |
| import org.apache.ignite.internal.catalog.CatalogValidationException; |
| import org.apache.ignite.internal.catalog.descriptors.CatalogSchemaDescriptor; |
| import org.apache.ignite.internal.catalog.descriptors.CatalogTableColumnDescriptor; |
| import org.apache.ignite.internal.catalog.descriptors.CatalogTableDescriptor; |
| import org.apache.ignite.internal.catalog.storage.NewColumnsEntry; |
| import org.apache.ignite.internal.catalog.storage.UpdateEntry; |
| |
| /** |
| * A command that adds new columns to the table. |
| */ |
| public class AlterTableAddColumnCommand extends AbstractTableCommand { |
| /** Returns builder to create a command to add new columns to the table. */ |
| public static AlterTableAddColumnCommandBuilder builder() { |
| return new Builder(); |
| } |
| |
| private final List<ColumnParams> columns; |
| |
| /** |
| * Constructs the object. |
| * |
| * @param tableName Name of the table to add new columns to. Should not be null or blank. |
| * @param schemaName Name of the schema the table of interest belongs to. Should not be null or blank. |
| * @param ifTableExists Flag indicating whether the {@code IF EXISTS} was specified. |
| * @param columns List of the columns to add to the table. There should be at least one column. |
| * @throws CatalogValidationException if any of restrictions above is violated. |
| */ |
| private AlterTableAddColumnCommand( |
| String tableName, |
| String schemaName, |
| boolean ifTableExists, |
| List<ColumnParams> columns |
| ) throws CatalogValidationException { |
| super(schemaName, tableName, ifTableExists); |
| |
| this.columns = copyOrNull(columns); |
| |
| validate(); |
| } |
| |
| @Override |
| public List<UpdateEntry> get(Catalog catalog) { |
| CatalogSchemaDescriptor schema = schemaOrThrow(catalog, schemaName); |
| |
| CatalogTableDescriptor table = tableOrThrow(schema, tableName); |
| |
| List<CatalogTableColumnDescriptor> columnDescriptors = new ArrayList<>(); |
| |
| for (ColumnParams column : columns) { |
| if (table.column(column.name()) != null) { |
| throw new CatalogValidationException( |
| format("Column with name '{}' already exists", column.name()) |
| ); |
| } |
| |
| columnDescriptors.add(fromParams(column)); |
| } |
| |
| return List.of( |
| new NewColumnsEntry(table.id(), columnDescriptors) |
| ); |
| } |
| |
| private void validate() { |
| if (nullOrEmpty(columns)) { |
| throw new CatalogValidationException("Columns not specified"); |
| } |
| |
| Set<String> columnNames = new HashSet<>(); |
| |
| for (ColumnParams column : columns) { |
| if (!columnNames.add(column.name())) { |
| throw new CatalogValidationException(format("Column with name '{}' specified more than once", column.name())); |
| } |
| |
| CatalogUtils.ensureNonFunctionalDefault(column.name(), column.defaultValueDefinition()); |
| } |
| } |
| |
| /** |
| * Implementation of {@link AlterTableAddColumnCommandBuilder}. |
| */ |
| private static class Builder implements AlterTableAddColumnCommandBuilder { |
| private List<ColumnParams> columns; |
| |
| private String schemaName; |
| |
| private String tableName; |
| |
| private boolean ifTableExists; |
| |
| @Override |
| public AlterTableAddColumnCommandBuilder schemaName(String schemaName) { |
| this.schemaName = schemaName; |
| |
| return this; |
| } |
| |
| @Override |
| public AlterTableAddColumnCommandBuilder tableName(String tableName) { |
| this.tableName = tableName; |
| |
| return this; |
| } |
| |
| @Override |
| public AlterTableAddColumnCommandBuilder ifTableExists(boolean ifTableExists) { |
| this.ifTableExists = ifTableExists; |
| |
| return this; |
| } |
| |
| @Override |
| public AlterTableAddColumnCommandBuilder columns(List<ColumnParams> columns) { |
| this.columns = columns; |
| |
| return this; |
| } |
| |
| @Override |
| public CatalogCommand build() { |
| return new AlterTableAddColumnCommand( |
| tableName, |
| schemaName, |
| ifTableExists, |
| columns |
| ); |
| } |
| } |
| } |