0043831443
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@910819 13f79535-47bb-0310-9956-ffa450edef68
77 lines
2.5 KiB
C++
77 lines
2.5 KiB
C++
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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/* $Rev$ $Date$ */
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#ifndef tuscany_modjava_hpp
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#define tuscany_modjava_hpp
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/**
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* Evaluation functions used by mod-eval to evaluate Java
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* component implementations.
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*/
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#include "string.hpp"
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#include "stream.hpp"
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#include "function.hpp"
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#include "list.hpp"
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#include "value.hpp"
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#include "monad.hpp"
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#include "eval.hpp"
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namespace tuscany {
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namespace server {
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namespace modjava {
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/**
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* Apply a Java component implementation function.
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*/
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struct applyImplementation {
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java::JavaClass impl;
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const list<value> px;
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java::JavaRuntime& jr;
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applyImplementation(const java::JavaClass& impl, const list<value>& px, java::JavaRuntime& jr) : impl(impl), px(px), jr(jr) {
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}
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const value operator()(const list<value>& params) const {
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const value expr = append<value>(params, px);
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debug(expr, "modeval::java::applyImplementation::input");
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const failable<value> res = java::evalClass(jr, expr, impl);
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const value val = !hasContent(res)? mklist<value>(value(), reason(res)) : mklist<value>(content(res));
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debug(val, "modeval::java::applyImplementation::result");
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return val;
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}
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};
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/**
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* Evaluate a Java component implementation and convert it to an applicable
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* lambda function.
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*/
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const failable<lambda<value(const list<value>&)> > evalImplementation(const string& path, const value& impl, const list<value>& px, java::JavaRuntime& jr) {
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const string cn(attributeValue("class", impl));
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const failable<java::JavaClass> jc = java::readClass(jr, path, cn);
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if (!hasContent(jc))
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return mkfailure<lambda<value(const list<value>&)> >(reason(jc));
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return lambda<value(const list<value>&)>(applyImplementation(content(jc), px, jr));
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}
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}
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}
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}
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#endif /* tuscany_modjava_hpp */
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