| /* |
| * 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.storage; |
| |
| import static java.util.stream.Collectors.toList; |
| import static org.apache.ignite.internal.catalog.commands.CatalogUtils.defaultZoneIdOpt; |
| import static org.apache.ignite.internal.catalog.commands.CatalogUtils.replaceSchema; |
| import static org.apache.ignite.internal.catalog.commands.CatalogUtils.replaceTable; |
| 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.catalog.storage.serialization.CatalogSerializationUtils.writeStringCollection; |
| import static org.apache.ignite.internal.util.IgniteUtils.capacity; |
| |
| import java.io.IOException; |
| import java.util.HashSet; |
| import java.util.Set; |
| import org.apache.ignite.internal.catalog.Catalog; |
| import org.apache.ignite.internal.catalog.descriptors.CatalogSchemaDescriptor; |
| import org.apache.ignite.internal.catalog.descriptors.CatalogTableDescriptor; |
| import org.apache.ignite.internal.catalog.events.CatalogEvent; |
| import org.apache.ignite.internal.catalog.events.CatalogEventParameters; |
| import org.apache.ignite.internal.catalog.events.DropColumnEventParameters; |
| import org.apache.ignite.internal.catalog.storage.serialization.CatalogObjectSerializer; |
| import org.apache.ignite.internal.catalog.storage.serialization.CatalogSerializationUtils; |
| import org.apache.ignite.internal.catalog.storage.serialization.MarshallableEntryType; |
| import org.apache.ignite.internal.tostring.S; |
| import org.apache.ignite.internal.util.io.IgniteDataInput; |
| import org.apache.ignite.internal.util.io.IgniteDataOutput; |
| |
| /** |
| * Describes dropping of columns. |
| */ |
| public class DropColumnsEntry implements UpdateEntry, Fireable { |
| public static final CatalogObjectSerializer<DropColumnsEntry> SERIALIZER = new DropColumnEntrySerializer(); |
| |
| private final int tableId; |
| private final Set<String> columns; |
| |
| /** |
| * Constructs the object. |
| * |
| * @param tableId Table id. |
| * @param columns Names of columns to drop. |
| */ |
| public DropColumnsEntry(int tableId, Set<String> columns) { |
| this.tableId = tableId; |
| this.columns = columns; |
| } |
| |
| /** Returns table id. */ |
| public int tableId() { |
| return tableId; |
| } |
| |
| /** Returns name of columns to drop. */ |
| public Set<String> columns() { |
| return columns; |
| } |
| |
| @Override |
| public int typeId() { |
| return MarshallableEntryType.DROP_COLUMN.id(); |
| } |
| |
| @Override |
| public CatalogEvent eventType() { |
| return CatalogEvent.TABLE_ALTER; |
| } |
| |
| @Override |
| public CatalogEventParameters createEventParameters(long causalityToken, int catalogVersion) { |
| return new DropColumnEventParameters(causalityToken, catalogVersion, tableId, columns); |
| } |
| |
| @Override |
| public Catalog applyUpdate(Catalog catalog, long causalityToken) { |
| CatalogTableDescriptor table = tableOrThrow(catalog, tableId); |
| CatalogSchemaDescriptor schema = schemaOrThrow(catalog, table.schemaId()); |
| |
| CatalogTableDescriptor newTable = table.newDescriptor( |
| table.name(), |
| table.tableVersion() + 1, |
| table.columns().stream() |
| .filter(col -> !columns.contains(col.name())) |
| .collect(toList()), |
| causalityToken, |
| table.storageProfile() |
| ); |
| |
| return new Catalog( |
| catalog.version(), |
| catalog.time(), |
| catalog.objectIdGenState(), |
| catalog.zones(), |
| replaceSchema(replaceTable(schema, newTable), catalog.schemas()), |
| defaultZoneIdOpt(catalog) |
| ); |
| } |
| |
| @Override |
| public String toString() { |
| return S.toString(this); |
| } |
| |
| /** |
| * Serializer for {@link DropColumnsEntry}. |
| */ |
| private static class DropColumnEntrySerializer implements CatalogObjectSerializer<DropColumnsEntry> { |
| @Override |
| public DropColumnsEntry readFrom(IgniteDataInput input) throws IOException { |
| int tableId = input.readInt(); |
| Set<String> columns = CatalogSerializationUtils.readStringCollection(input, size -> new HashSet<>(capacity(size))); |
| |
| return new DropColumnsEntry(tableId, columns); |
| } |
| |
| @Override |
| public void writeTo(DropColumnsEntry object, IgniteDataOutput output) throws IOException { |
| output.writeInt(object.tableId()); |
| writeStringCollection(object.columns(), output); |
| } |
| } |
| } |