| /* |
| * 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.shardingsphere.single.distsql.handler.update; |
| |
| import com.google.common.base.Strings; |
| import lombok.Setter; |
| import org.apache.shardingsphere.infra.exception.kernel.metadata.resource.storageunit.MissingRequiredStorageUnitsException; |
| import org.apache.shardingsphere.distsql.handler.engine.update.rdl.rule.spi.database.DatabaseRuleCreateExecutor; |
| import org.apache.shardingsphere.infra.exception.core.ShardingSpherePreconditions; |
| import org.apache.shardingsphere.infra.metadata.database.ShardingSphereDatabase; |
| import org.apache.shardingsphere.single.api.config.SingleRuleConfiguration; |
| import org.apache.shardingsphere.single.distsql.statement.rdl.SetDefaultSingleTableStorageUnitStatement; |
| import org.apache.shardingsphere.single.rule.SingleRule; |
| |
| import java.util.Collection; |
| import java.util.Collections; |
| |
| /** |
| * Set default single table storage unit executor. |
| */ |
| @Setter |
| public final class SetDefaultSingleTableStorageUnitExecutor implements DatabaseRuleCreateExecutor<SetDefaultSingleTableStorageUnitStatement, SingleRule, SingleRuleConfiguration> { |
| |
| private ShardingSphereDatabase database; |
| |
| private SingleRule rule; |
| |
| @Override |
| public void checkBeforeUpdate(final SetDefaultSingleTableStorageUnitStatement sqlStatement) { |
| checkStorageUnitExist(sqlStatement); |
| } |
| |
| private void checkStorageUnitExist(final SetDefaultSingleTableStorageUnitStatement sqlStatement) { |
| if (!Strings.isNullOrEmpty(sqlStatement.getDefaultStorageUnit())) { |
| Collection<String> storageUnitNames = database.getResourceMetaData().getStorageUnits().keySet(); |
| ShardingSpherePreconditions.checkContains(storageUnitNames, sqlStatement.getDefaultStorageUnit(), |
| () -> new MissingRequiredStorageUnitsException(database.getName(), Collections.singleton(sqlStatement.getDefaultStorageUnit()))); |
| } |
| } |
| |
| @Override |
| public SingleRuleConfiguration buildToBeCreatedRuleConfiguration(final SetDefaultSingleTableStorageUnitStatement sqlStatement) { |
| SingleRuleConfiguration result = new SingleRuleConfiguration(); |
| result.setDefaultDataSource(sqlStatement.getDefaultStorageUnit()); |
| result.getTables().addAll(rule.getConfiguration().getTables()); |
| return result; |
| } |
| |
| @Override |
| public Class<SingleRule> getRuleClass() { |
| return SingleRule.class; |
| } |
| |
| @Override |
| public Class<SetDefaultSingleTableStorageUnitStatement> getType() { |
| return SetDefaultSingleTableStorageUnitStatement.class; |
| } |
| } |