| /***************************************************************** |
| * 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 |
| * |
| * https://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.cayenne.access; |
| |
| import java.util.List; |
| |
| import org.apache.cayenne.CayenneRuntimeException; |
| import org.apache.cayenne.DataRow; |
| import org.apache.cayenne.ObjectId; |
| import org.apache.cayenne.ResultIterator; |
| import org.apache.cayenne.log.JdbcEventLogger; |
| import org.apache.cayenne.map.DbAttribute; |
| import org.apache.cayenne.query.BatchQuery; |
| import org.apache.cayenne.query.InsertBatchQuery; |
| import org.apache.cayenne.query.Query; |
| import org.apache.cayenne.util.Util; |
| |
| /** |
| * Used as an observer for DataContext commit operations. |
| * |
| * @since 1.2 |
| * @deprecated since 4.2 as part of deprecated {@link LegacyDataDomainFlushAction} |
| */ |
| @Deprecated |
| class DataDomainFlushObserver implements OperationObserver { |
| |
| /** |
| * @since 3.1 |
| */ |
| private JdbcEventLogger logger; |
| |
| DataDomainFlushObserver(JdbcEventLogger logger) { |
| this.logger = logger; |
| } |
| |
| @Override |
| public void nextQueryException(Query query, Exception ex) { |
| throw new CayenneRuntimeException("Raising from query exception.", Util.unwindException(ex)); |
| } |
| |
| @Override |
| public void nextGlobalException(Exception ex) { |
| throw new CayenneRuntimeException("Raising from underlyingQueryEngine exception.", Util.unwindException(ex)); |
| } |
| |
| /** |
| * Processes generated keys. |
| * |
| * @since 1.2 |
| */ |
| @Override |
| @SuppressWarnings({ "rawtypes", "unchecked" }) |
| public void nextGeneratedRows(Query query, ResultIterator<?> keysIterator, List<ObjectId> idsToUpdate) { |
| |
| // read and close the iterator before doing anything else |
| List<DataRow> keys; |
| try { |
| keys = (List<DataRow>) keysIterator.allRows(); |
| } finally { |
| keysIterator.close(); |
| } |
| |
| if (!(query instanceof InsertBatchQuery)) { |
| throw new CayenneRuntimeException("Generated keys only supported for InsertBatchQuery, instead got %s", query); |
| } |
| |
| if (keys.size() != idsToUpdate.size()) { |
| throw new CayenneRuntimeException("Mismatching number of generated PKs: expected %d, instead got %d", idsToUpdate.size(), keys.size()); |
| } |
| |
| for (int i = 0; i < keys.size(); i++) { |
| DataRow key = keys.get(i); |
| |
| // empty key? |
| if (key.size() == 0) { |
| throw new CayenneRuntimeException("Empty key generated."); |
| } |
| |
| ObjectId idToUpdate = idsToUpdate.get(i); |
| if (idToUpdate == null || !idToUpdate.isTemporary()) { |
| // why would this happen? |
| return; |
| } |
| |
| BatchQuery batch = (BatchQuery) query; |
| for (DbAttribute attribute : batch.getDbEntity().getGeneratedAttributes()) { |
| |
| // batch can have generated attributes that are not PKs, e.g. |
| // columns with |
| // DB DEFAULT values. Ignore those. |
| if (attribute.isPrimaryKey()) { |
| |
| Object value = key.get(attribute.getName()); |
| |
| // As of now (01/2005) many tested drivers don't provide decent |
| // descriptors of |
| // identity result sets, so a data row may contain garbage labels. |
| if (value == null) { |
| value = key.values().iterator().next(); |
| } |
| |
| // Log the generated PK |
| logger.logGeneratedKey(attribute, value); |
| |
| // I guess we should override any existing value, |
| // as generated key is the latest thing that exists in the DB. |
| idToUpdate.getReplacementIdMap().put(attribute.getName(), value); |
| break; |
| } |
| } |
| } |
| } |
| |
| public void setJdbcEventLogger(JdbcEventLogger logger) { |
| this.logger = logger; |
| } |
| |
| public JdbcEventLogger getJdbcEventLogger() { |
| return this.logger; |
| } |
| |
| @Override |
| public void nextBatchCount(Query query, int[] resultCount) { |
| } |
| |
| @Override |
| public void nextCount(Query query, int resultCount) { |
| } |
| |
| @Override |
| public void nextRows(Query query, List<?> dataRows) { |
| } |
| |
| @Override |
| @SuppressWarnings("rawtypes") |
| public void nextRows(Query q, ResultIterator it) { |
| throw new UnsupportedOperationException( |
| "'nextDataRows(Query,ResultIterator)' is unsupported (and unexpected) on commit."); |
| } |
| |
| @Override |
| public boolean isIteratedResult() { |
| return false; |
| } |
| } |