diff options
Diffstat (limited to 'das-java/tags/1.0-incubating-beta2-rc1/rdb/src/main/java/org/apache/tuscany/das/rdb/impl/ChangeFactory.java')
-rw-r--r-- | das-java/tags/1.0-incubating-beta2-rc1/rdb/src/main/java/org/apache/tuscany/das/rdb/impl/ChangeFactory.java | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/das-java/tags/1.0-incubating-beta2-rc1/rdb/src/main/java/org/apache/tuscany/das/rdb/impl/ChangeFactory.java b/das-java/tags/1.0-incubating-beta2-rc1/rdb/src/main/java/org/apache/tuscany/das/rdb/impl/ChangeFactory.java new file mode 100644 index 0000000000..c348eae54e --- /dev/null +++ b/das-java/tags/1.0-incubating-beta2-rc1/rdb/src/main/java/org/apache/tuscany/das/rdb/impl/ChangeFactory.java @@ -0,0 +1,177 @@ +/* + * 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) { + return new UpdateOperation(getUpdateCommand(changedObject), 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) { + + 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) { + createCommand = InsertGenerator.INSTANCE.getInsertCommand(mapping, changedObject, table); + } else { + createCommand = new InsertCommandImpl(create); + } + createCommand.setConnection(connection); + createCommand.configWrapper = mapping; + } + return createCommand; + } + + 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) { + + 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) { + updateCommand = UpdateGenerator.INSTANCE.getUpdateCommand(mapping, changedObject, table); + } else { + TableWrapper t = new TableWrapper(table); + if (t.getCollisionColumn() != null) { + updateCommand = new OptimisticWriteCommandImpl(update); + } else { + updateCommand = new UpdateCommandImpl(update); + } + } + updateCommand.setConnection(connection); + updateCommand.configWrapper = mapping; + + if (this.logger.isDebugEnabled()) { + this.logger.debug("Returning updateCommand: " + updateCommand); + } + + return updateCommand; + } + + public MappingWrapper getConfig() { + return this.mapping; + } + +} |