diff options
author | jsdelfino <jsdelfino@13f79535-47bb-0310-9956-ffa450edef68> | 2010-12-08 03:52:27 +0000 |
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committer | jsdelfino <jsdelfino@13f79535-47bb-0310-9956-ffa450edef68> | 2010-12-08 03:52:27 +0000 |
commit | 22333d2e9bed64dbc8507faad881ff8b705fe3b0 (patch) | |
tree | 12200ff36a912012df8de164136f575caa161958 /sca-cpp/trunk/components/filedb/filedb.cpp | |
parent | 2a70a69d92d1bd6071ff6ea76d724b458b4c2287 (diff) |
Add a test file-based database component.
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1043296 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to '')
-rw-r--r-- | sca-cpp/trunk/components/filedb/filedb.cpp | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/sca-cpp/trunk/components/filedb/filedb.cpp b/sca-cpp/trunk/components/filedb/filedb.cpp new file mode 100644 index 0000000000..bb2f0590b0 --- /dev/null +++ b/sca-cpp/trunk/components/filedb/filedb.cpp @@ -0,0 +1,123 @@ +/* + * 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. + */ + +/* $Rev$ $Date$ */ + +/** + * File based database component implementation. + */ + +#include "string.hpp" +#include "function.hpp" +#include "list.hpp" +#include "value.hpp" +#include "monad.hpp" +#include "filedb.hpp" + +namespace tuscany { +namespace filedb { + +/** + * Get an item from the database. + */ +const failable<value> get(const list<value>& params, filedb::FileDB& db) { + return filedb::get(car(params), db); +} + +/** + * Post an item to the database. + */ +const failable<value> post(const list<value>& params, filedb::FileDB& db) { + const value id = append<value>(car(params), mklist(mkuuid())); + const failable<bool> val = filedb::post(id, cadr(params), db); + if (!hasContent(val)) + return mkfailure<value>(reason(val)); + return id; +} + +/** + * Put an item into the database. + */ +const failable<value> put(const list<value>& params, filedb::FileDB& db) { + const failable<bool> val = filedb::put(car(params), cadr(params), db); + if (!hasContent(val)) + return mkfailure<value>(reason(val)); + return value(content(val)); +} + +/** + * Delete an item from the database. + */ +const failable<value> del(const list<value>& params, filedb::FileDB& db) { + const failable<bool> val = filedb::del(car(params), db); + if (!hasContent(val)) + return mkfailure<value>(reason(val)); + return value(content(val)); +} + +/** + * Component implementation lambda function. + */ +class applyfiledb { +public: + applyfiledb(filedb::FileDB& db) : db(db) { + } + + const value operator()(const list<value>& params) const { + const value func(car(params)); + if (func == "get") + return get(cdr(params), db); + if (func == "post") + return post(cdr(params), db); + if (func == "put") + return put(cdr(params), db); + if (func == "delete") + return del(cdr(params), db); + return tuscany::mkfailure<tuscany::value>(); + } + +private: + filedb::FileDB& db; +}; + +/** + * Start the component. + */ +const failable<value> start(unused const list<value>& params) { + // Connect to the configured database and table + const value dbname = ((lambda<value(list<value>)>)car(params))(list<value>()); + filedb::FileDB& db = *(new (gc_new<filedb::FileDB>()) filedb::FileDB(dbname)); + + // Return the component implementation lambda function + return value(lambda<value(const list<value>&)>(applyfiledb(db))); +} + +} +} + +extern "C" { + +const tuscany::value apply(const tuscany::list<tuscany::value>& params) { + const tuscany::value func(car(params)); + if (func == "start") + return tuscany::filedb::start(cdr(params)); + return tuscany::mkfailure<tuscany::value>(); +} + +} |