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/**
* @copyright
* ====================================================================
* 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.
* ====================================================================
* @endcopyright
*/
#ifndef SVN_JAVAHL_JNIWRAPPER_ITERATOR_HPP
#define SVN_JAVAHL_JNIWRAPPER_ITERATOR_HPP
#include "jni_env.hpp"
#include "jni_object.hpp"
namespace Java {
/**
* Non-template base for a Java iterator.
*
* @since New in 1.9.
*/
class BaseIterator : public Object
{
protected:
/**
* Constructs the iterator wrapper.
*/
explicit BaseIterator(Env env, jobject jiterator)
: Object(env, ClassCache::get_iterator(env), jiterator)
{}
public:
/**
* Returns @c false at the end of the iteration.
*/
bool has_next() const
{
return m_env.CallBooleanMethod(m_jthis, impl().m_mid_has_next);
}
/**
* Returns the next object in the iteration.
* @throw std::range_error if the next object is not available.
*/
jobject next();
private:
/**
* This object's implementation details.
*/
class ClassImpl : public Object::ClassImpl
{
friend class ClassCacheImpl;
protected:
explicit ClassImpl(Env env, jclass cls);
public:
virtual ~ClassImpl();
const MethodID m_mid_has_next;
const MethodID m_mid_next;
};
const ClassImpl& impl() const
{
return *dynamic_cast<const ClassImpl*>(m_impl);
}
friend class ClassCacheImpl;
static const char* const m_class_name;
};
} // namespace Java
#endif // SVN_JAVAHL_JNIWRAPPER_ITERATOR_HPP
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