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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
+ *
+ * @file Iterator.cpp
+ * @brief Interface of the class Iterator
+ */
+
+#ifndef JAVAHL_ITERATOR_H
+#define JAVAHL_ITERATOR_H
+
+#include "JNIUtil.h"
+
+/**
+ * Encapsulates an immutable java.lang.Iterator implementation.
+ */
+class Iterator
+{
+public:
+ Iterator(jobject jiterable);
+ ~Iterator();
+ bool hasNext() const;
+ jobject next() const;
+
+protected:
+ Iterator(jobject jiterable, bool);
+
+private:
+ bool m_persistent;
+ jobject m_jiterator;
+};
+
+
+/**
+ * Like Iterator, but the implementation will hold a global reference
+ * to the internal iterator object to protect it across JNI calls.
+ */
+class PersistentIterator : protected Iterator
+{
+public:
+ PersistentIterator(jobject jiterable) : Iterator(jiterable, true) {}
+ bool hasNext() const { return Iterator::hasNext(); }
+ jobject next() const { return Iterator::next(); }
+};
+
+#endif // JAVAHL_ITERATOR_H