| /* |
| * 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.zoneOrThrow; |
| |
| import java.util.Arrays; |
| import java.util.List; |
| 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.DistributionZoneCantBeDroppedValidationException; |
| import org.apache.ignite.internal.catalog.descriptors.CatalogZoneDescriptor; |
| import org.apache.ignite.internal.catalog.storage.DropZoneEntry; |
| import org.apache.ignite.internal.catalog.storage.UpdateEntry; |
| |
| /** |
| * A command that drops a zone with specified name. |
| */ |
| public class DropZoneCommand extends AbstractZoneCommand { |
| /** Returns builder to create a command to drop zone with specified name. */ |
| public static DropZoneCommandBuilder builder() { |
| return new Builder(); |
| } |
| |
| private final boolean ifExists; |
| |
| /** |
| * Constructor. |
| * |
| * @param zoneName Name of the zone. |
| * @param ifExists Flag indicating whether the {@code IF EXISTS} was specified. |
| * @throws CatalogValidationException if any of restrictions above is violated. |
| */ |
| private DropZoneCommand(String zoneName, boolean ifExists) throws CatalogValidationException { |
| super(zoneName); |
| |
| this.ifExists = ifExists; |
| } |
| |
| @Override |
| public List<UpdateEntry> get(Catalog catalog) { |
| CatalogZoneDescriptor zone = zoneOrThrow(catalog, zoneName); |
| CatalogZoneDescriptor defaultZone = catalog.defaultZone(); |
| |
| if (defaultZone != null && zone.id() == defaultZone.id()) { |
| throw new DistributionZoneCantBeDroppedValidationException("Default distribution zone can't be dropped: zoneName={}", zoneName); |
| } |
| |
| catalog.schemas().stream() |
| .flatMap(s -> Arrays.stream(s.tables())) |
| .filter(t -> t.zoneId() == zone.id()) |
| .findAny() |
| .ifPresent(t -> { |
| throw new DistributionZoneCantBeDroppedValidationException("Distribution zone '{}' is assigned to the table '{}'", |
| zone.name(), t.name()); |
| }); |
| |
| return List.of(new DropZoneEntry(zone.id())); |
| } |
| |
| public boolean ifExists() { |
| return ifExists; |
| } |
| |
| /** |
| * Implementation of {@link DropZoneCommandBuilder}. |
| */ |
| private static class Builder implements DropZoneCommandBuilder { |
| private String zoneName; |
| private boolean ifExists; |
| |
| @Override |
| public DropZoneCommandBuilder zoneName(String zoneName) { |
| this.zoneName = zoneName; |
| |
| return this; |
| } |
| |
| @Override |
| public DropZoneCommandBuilder ifExists(boolean ifExists) { |
| this.ifExists = ifExists; |
| |
| return this; |
| } |
| |
| @Override |
| public CatalogCommand build() { |
| return new DropZoneCommand(zoneName, ifExists); |
| } |
| } |
| } |