mirror of https://github.com/Icinga/icinga2.git
133 lines
3.5 KiB
C++
133 lines
3.5 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012 Icinga Development Team (http://www.icinga.org/) *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU General Public License *
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* as published by the Free Software Foundation; either version 2 *
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* of the License, or (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the Free Software Foundation *
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
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******************************************************************************/
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#ifndef DICTIONARY_H
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#define DICTIONARY_H
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namespace icinga
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{
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/**
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* A container that holds key-value pairs.
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*
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* @ingroup base
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*/
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class I2_BASE_API Dictionary : public Object
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{
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public:
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typedef shared_ptr<Dictionary> Ptr;
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typedef weak_ptr<Dictionary> WeakPtr;
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typedef map<string, Variant>::const_iterator ConstIterator;
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typedef map<string, Variant>::iterator Iterator;
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/**
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* Retrieves a value from the dictionary.
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*
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* @param key The key.
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* @param[out] value Pointer to the value.
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* @returns true if the value was retrieved, false otherwise.
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*/
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template<typename T>
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bool GetProperty(const string& key, T *value) const
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{
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ConstIterator i = m_Data.find(key);
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if (i == m_Data.end())
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return false;
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*value = static_cast<T>(i->second);
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return true;
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}
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/**
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* Retrieves a value from the dictionary.
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*
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* @param key The key.
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* @param[out] value Pointer to the value.
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* @returns true if the value was retrieved, false otherwise.
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*/
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bool GetProperty(const string& key, Dictionary::Ptr *value)
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{
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Object::Ptr object;
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if (!GetProperty(key, &object))
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return false;
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*value = dynamic_pointer_cast<Dictionary>(object);
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if (!*value)
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throw runtime_error("Object is not a dictionary.");
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return true;
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}
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/**
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* Sets a value in the dictionary.
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*
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* @param key The key.
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* @param value The value.
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*/
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template<typename T>
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void SetProperty(const string& key, const T& value)
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{
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pair<typename map<string, Variant>::iterator, bool> ret;
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ret = m_Data.insert(make_pair(key, value));
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if (!ret.second)
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ret.first->second = value;
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}
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/**
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* Adds an unnamed value to the dictionary.
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*
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* @param value The value.
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*/
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template<typename T>
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void AddUnnamedProperty(const T& value)
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{
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Iterator it;
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string key;
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long index = GetLength();
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do {
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stringstream s;
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s << "_" << index;
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index++;
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key = s.str();
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it = m_Data.find(key);
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} while (it != m_Data.end());
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SetProperty(key, value);
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}
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bool Contains(const string& key) const;
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Iterator Begin(void);
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Iterator End(void);
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long GetLength(void) const;
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private:
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map<string, Variant> m_Data;
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};
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}
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#endif /* DICTIONARY_H */
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