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/*
* 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.
*/
/* $Rev$ $Date$ */
#ifndef tuscany_modjava_hpp
#define tuscany_modjava_hpp
/**
* Evaluation functions used by mod-eval to evaluate Java
* component implementations.
*/
#include "string.hpp"
#include "stream.hpp"
#include "function.hpp"
#include "list.hpp"
#include "value.hpp"
#include "monad.hpp"
#include "eval.hpp"
namespace tuscany {
namespace server {
namespace modjava {
/**
* Apply a Java component implementation function.
*/
struct applyImplementation {
java::JavaClass impl;
const list<value> px;
java::JavaRuntime& jr;
applyImplementation(const java::JavaClass& impl, const list<value>& px, java::JavaRuntime& jr) : impl(impl), px(px), jr(jr) {
}
const value operator()(const list<value>& params) const {
const value expr = append<value>(params, px);
debug(expr, "modeval::java::applyImplementation::input");
const failable<value> res = java::evalClass(jr, expr, impl);
const value val = !hasContent(res)? mklist<value>(value(), reason(res), rcode(res)) : mklist<value>(content(res));
debug(val, "modeval::java::applyImplementation::result");
return val;
}
};
/**
* Evaluate a Java component implementation and convert it to an applicable
* lambda function.
*/
const failable<lambda<value(const list<value>&)> > evalImplementation(const string& path, const value& impl, const list<value>& px, java::JavaRuntime& jr) {
const string cn(attributeValue("class", impl));
const failable<java::JavaClass> jc = java::readClass(jr, path, cn);
if (!hasContent(jc))
return mkfailure<lambda<value(const list<value>&)> >(jc);
return lambda<value(const list<value>&)>(applyImplementation(content(jc), px, jr));
}
}
}
}
#endif /* tuscany_modjava_hpp */
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