| /* |
| * 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.tuscany.das.rdb.impl; |
| |
| import org.apache.log4j.Logger; |
| import org.apache.tuscany.das.rdb.config.Create; |
| import org.apache.tuscany.das.rdb.config.Delete; |
| import org.apache.tuscany.das.rdb.config.Table; |
| import org.apache.tuscany.das.rdb.config.Update; |
| import org.apache.tuscany.das.rdb.config.wrapper.MappingWrapper; |
| import org.apache.tuscany.das.rdb.config.wrapper.TableWrapper; |
| import org.apache.tuscany.das.rdb.generator.impl.DeleteGenerator; |
| import org.apache.tuscany.das.rdb.generator.impl.InsertGenerator; |
| import org.apache.tuscany.das.rdb.generator.impl.UpdateGenerator; |
| |
| import commonj.sdo.DataObject; |
| |
| public class ChangeFactory { |
| private final Logger logger = Logger.getLogger(ChangeFactory.class); |
| |
| private InsertCommandImpl createCommand; |
| |
| private UpdateCommandImpl updateCommand; |
| |
| private DeleteCommandImpl deleteCommand; |
| |
| private final MappingWrapper mapping; |
| |
| private final ConnectionImpl connection; |
| |
| public ChangeFactory(MappingWrapper mapping, ConnectionImpl connection) { |
| this.mapping = mapping; |
| this.connection = connection; |
| } |
| |
| public void setCreateCommand(InsertCommandImpl cmd) { |
| createCommand = cmd; |
| } |
| |
| public void setUpdateCommand(UpdateCommandImpl cmd) { |
| if (this.logger.isDebugEnabled()) { |
| this.logger.debug("Setting Update Command to " + cmd); |
| } |
| |
| updateCommand = cmd; |
| } |
| |
| public void setDeleteCommand(DeleteCommandImpl cmd) { |
| deleteCommand = cmd; |
| } |
| |
| ChangeOperation createUpdateOperation(DataObject changedObject, String propagatedID) { |
| UpdateCommandImpl cmd = getUpdateCommand(changedObject); |
| if (cmd == null) { |
| return null; |
| } else { |
| return new UpdateOperation(cmd, changedObject, propagatedID); |
| } |
| } |
| |
| ChangeOperation createUpdateOperation(DataObject changedObject) { |
| return createUpdateOperation(changedObject, null); |
| } |
| |
| ChangeOperation createDeleteOperation(DataObject changedObject) { |
| return new DeleteOperation(getDeleteCommand(changedObject), changedObject); |
| } |
| |
| ChangeOperation createInsertOperation(DataObject changedObject, String propagatedID) { |
| return new CreateOperation(getCreateCommand(changedObject), changedObject, propagatedID); |
| } |
| |
| private InsertCommandImpl getCreateCommand(DataObject changedObject) { |
| InsertCommandImpl command = null; |
| if (createCommand == null) { |
| Table table = mapping.getTableByTypeName(changedObject.getType().getName()); |
| if (table == null) { |
| if (changedObject.getType().getProperty("ID") != null) { |
| // If the table is not defined in the config, assume it has a primary key of "ID" |
| mapping.addPrimaryKey(changedObject.getType().getName() + ".ID"); |
| table = mapping.getTableByTypeName(changedObject.getType().getName()); |
| } else { |
| throw new RuntimeException("Table " + changedObject.getType().getName() |
| + " was changed in the DataGraph but is not present in the Config"); |
| } |
| } |
| |
| Create create = table.getCreate(); |
| |
| if (create == null) { |
| command = InsertGenerator.INSTANCE.getInsertCommand(mapping, changedObject, table); |
| } else { |
| // command can be cached |
| createCommand = new InsertCommandImpl(create); |
| command = createCommand; |
| } |
| command.setConnection(connection); |
| command.configWrapper = mapping; |
| } else { |
| command = createCommand; |
| } |
| return command; |
| } |
| |
| private DeleteCommandImpl getDeleteCommand(DataObject changedObject) { |
| |
| if (deleteCommand == null) { |
| Table table = mapping.getTableByTypeName(changedObject.getType().getName()); |
| if (table == null) { |
| if (changedObject.getType().getProperty("ID") != null) { |
| // If the table is not defined in the config, assume it has a primary key of "ID" |
| mapping.addPrimaryKey(changedObject.getType().getName() + ".ID"); |
| table = mapping.getTableByTypeName(changedObject.getType().getName()); |
| } else { |
| throw new RuntimeException("Table " + changedObject.getType().getName() |
| + " was changed in the DataGraph but is not present in the Config"); |
| } |
| } |
| |
| Delete delete = table.getDelete(); |
| |
| if (delete == null) { |
| deleteCommand = DeleteGenerator.INSTANCE.getDeleteCommand(mapping, table);//JIRA-952 |
| } else { |
| deleteCommand = new DeleteCommandImpl(delete); |
| } |
| deleteCommand.setConnection(connection); |
| deleteCommand.configWrapper = mapping; |
| } |
| return deleteCommand; |
| } |
| |
| private UpdateCommandImpl getUpdateCommand(DataObject changedObject) { |
| UpdateCommandImpl command = null; |
| if (updateCommand == null) { |
| Table table = mapping.getTableByTypeName(changedObject.getType().getName()); |
| if (table == null) { |
| if (changedObject.getType().getProperty("ID") != null) { |
| mapping.addPrimaryKey(changedObject.getType().getName() + ".ID"); |
| table = mapping.getTableByTypeName(changedObject.getType().getName()); |
| } else { |
| throw new RuntimeException("Table " + changedObject.getType().getName() |
| + " was changed in the DataGraph but is not present in the Config"); |
| } |
| } |
| Update update = table.getUpdate(); |
| if (update == null) { |
| command = UpdateGenerator.INSTANCE.getUpdateCommand(mapping, changedObject, table); |
| } else { |
| // command can be cached |
| TableWrapper t = new TableWrapper(table); |
| if (t.getCollisionColumn() != null) { |
| updateCommand = new OptimisticWriteCommandImpl(update); |
| } else { |
| updateCommand = new UpdateCommandImpl(update); |
| } |
| command = updateCommand; |
| } |
| |
| if (command != null) { |
| command.setConnection(connection); |
| command.configWrapper = mapping; |
| } else { |
| if(this.logger.isDebugEnabled()) { |
| this.logger.debug("Update command is NULL"); |
| } |
| } |
| } else { |
| command = updateCommand; |
| } |
| |
| if (this.logger.isDebugEnabled()) { |
| this.logger.debug("Returning updateCommand: " + command); |
| } |
| |
| return command; |
| } |
| |
| public MappingWrapper getConfig() { |
| return this.mapping; |
| } |
| |
| } |