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Diffstat (limited to 'das-java/branches/das-java-M2/rdb/src/main/java/org/apache/tuscany/das/rdb/impl/OptimisticWriteCommandImpl.java')
-rw-r--r-- | das-java/branches/das-java-M2/rdb/src/main/java/org/apache/tuscany/das/rdb/impl/OptimisticWriteCommandImpl.java | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/das-java/branches/das-java-M2/rdb/src/main/java/org/apache/tuscany/das/rdb/impl/OptimisticWriteCommandImpl.java b/das-java/branches/das-java-M2/rdb/src/main/java/org/apache/tuscany/das/rdb/impl/OptimisticWriteCommandImpl.java new file mode 100644 index 0000000000..a1ced26ecf --- /dev/null +++ b/das-java/branches/das-java-M2/rdb/src/main/java/org/apache/tuscany/das/rdb/impl/OptimisticWriteCommandImpl.java @@ -0,0 +1,56 @@ +/* + * 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 java.sql.SQLException; + +import org.apache.tuscany.das.rdb.config.Update; + +public class OptimisticWriteCommandImpl extends UpdateCommandImpl { + + public OptimisticWriteCommandImpl(String sqlString) { + super(sqlString); + } + + public OptimisticWriteCommandImpl(Update update) { + super(update); + addParameters(update.getParameters()); + } + + public void execute() { + + boolean success = false; + try { + int rowsAffected = statement.executeUpdate(parameters); + success = true; + if (rowsAffected == 0) { + throw new RuntimeException("An update collision occurred"); + } + } catch (SQLException e) { + throw new RuntimeException(e); + } finally { + if (success) { + statement.getConnection().cleanUp(); + } else { + statement.getConnection().errorCleanUp(); + } + } + + } +} |