XQuilla/include/xqilla/update/PendingUpdateList.hpp

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/*
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* Copyright (c) 2001-2008
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* DecisionSoft Limited. All rights reserved.
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* Copyright (c) 2004-2008
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* Oracle. All rights reserved.
*
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* Licensed 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
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*
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* 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.
*
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* $Id: PendingUpdateList.hpp 475 2008-01-08 18:47:44Z jpcs $
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*/
#ifndef _PENDINGUPDATELIST_HPP
#define _PENDINGUPDATELIST_HPP
#include <xqilla/framework/XQillaExport.hpp>
#include <xqilla/runtime/Sequence.hpp>
#include <xqilla/items/Node.hpp>
#include <xqilla/ast/LocationInfo.hpp>
class XQILLA_API PendingUpdate : public LocationInfo
{
public:
/**
* This enumeration is ordered according to the order
* that the pending updates should be applied.
*/
enum Type {
INSERT_INTO,
INSERT_ATTRIBUTES,
REPLACE_VALUE,
RENAME,
PUDELETE,
INSERT_BEFORE,
INSERT_AFTER,
INSERT_INTO_AS_FIRST,
INSERT_INTO_AS_LAST,
REPLACE_ATTRIBUTE,
REPLACE_NODE,
REPLACE_ELEMENT_CONTENT,
PUT
};
PendingUpdate(Type type, const Node::Ptr &target, const LocationInfo *info)
: type_(type), target_(target), value_()
{
setLocationInfo(info);
}
PendingUpdate(Type type, const Node::Ptr &target, const Item::Ptr &value, const LocationInfo *info)
: type_(type), target_(target), value_(value)
{
setLocationInfo(info);
}
PendingUpdate(Type type, const Node::Ptr &target, const Sequence &value, const LocationInfo *info)
: type_(type), target_(target), value_(value)
{
setLocationInfo(info);
}
Type getType() const { return type_; }
const Node::Ptr &getTarget() const { return target_; }
const Sequence &getValue() const { return value_; }
private:
Type type_;
Node::Ptr target_;
Sequence value_;
};
typedef std::vector<PendingUpdate> PendingUpdates;
/**
* The result of an updating expression
*/
class XQILLA_API PendingUpdateList
{
public:
typedef PendingUpdates::iterator iterator;
typedef PendingUpdates::const_iterator const_iterator;
PendingUpdateList() {}
PendingUpdateList(const PendingUpdate &update) { addUpdate(update); }
iterator begin() { return updates_.begin(); }
const_iterator begin() const { return updates_.begin(); }
iterator end() { return updates_.end(); }
const_iterator end() const { return updates_.end(); }
void addUpdate(const PendingUpdate &update);
void mergeUpdates(const PendingUpdateList &pul);
private:
PendingUpdates updates_;
};
#endif