XQuilla/include/xqilla/fulltext/FTOption.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, 2018 Oracle and/or its affiliates. All rights reserved.
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*
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*
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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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*/
#ifndef _FTOPTION_HPP
#define _FTOPTION_HPP
#include <xqilla/fulltext/FTSelection.hpp>
#include <xqilla/fulltext/TokenInfo.hpp>
class XQILLA_API FTOption : public FTSelection
{
public:
enum FTUnit {
WORDS,
SENTENCES,
PARAGRAPHS
};
virtual void setArgument(FTSelection *arg) = 0;
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static unsigned int tokenUnit(const TokenInfo &t, FTUnit unit)
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{
switch(unit) {
case WORDS:
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return t.position_;
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case SENTENCES:
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return t.sentence_;
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case PARAGRAPHS:
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return t.paragraph_;
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}
return 0;
}
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static unsigned int tokenDistance(const TokenInfo &a, const TokenInfo &b, FTUnit unit)
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{
switch(unit) {
case WORDS:
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return (unsigned int)labs((long)a.position_ - (long)b.position_) - 1;
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case SENTENCES:
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return (unsigned int)labs((long)a.sentence_ - (long)b.sentence_);
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case PARAGRAPHS:
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return (unsigned int)labs((long)a.paragraph_ - (long)b.paragraph_);
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}
return 0;
}
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static bool lessThanFunc(const TokenInfo &a, const TokenInfo &b)
{
if (a.paragraph_ != b.paragraph_)
return a.paragraph_ < b.paragraph_;
if (a.sentence_ != b.sentence_)
return a.sentence_ < b.sentence_;
return a.position_ < b.position_;
}
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protected:
FTOption(Type type, XPath2MemoryManager *memMgr)
: FTSelection(type, memMgr) {}
};
typedef std::vector<FTOption*,XQillaAllocator<FTOption*> > VectorOfFTOptions;
#endif