79 lines
2.1 KiB
C++
79 lines
2.1 KiB
C++
/*
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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");
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* you may not use this file except in compliance with the License.
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* 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
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _FTOPTION_HPP
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#define _FTOPTION_HPP
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#include <xqilla/fulltext/FTSelection.hpp>
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#include <xqilla/fulltext/TokenInfo.hpp>
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class XQILLA_API FTOption : public FTSelection
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{
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public:
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enum FTUnit {
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WORDS,
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SENTENCES,
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PARAGRAPHS
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};
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virtual void setArgument(FTSelection *arg) = 0;
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static unsigned int tokenUnit(const TokenInfo &t, FTUnit unit)
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{
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switch(unit) {
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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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}
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return 0;
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}
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static unsigned int tokenDistance(const TokenInfo &a, const TokenInfo &b, FTUnit unit)
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{
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switch(unit) {
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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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}
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return 0;
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}
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static bool lessThanFunc(const TokenInfo &a, const TokenInfo &b)
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{
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if (a.paragraph_ != b.paragraph_)
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return a.paragraph_ < b.paragraph_;
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if (a.sentence_ != b.sentence_)
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return a.sentence_ < b.sentence_;
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return a.position_ < b.position_;
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}
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protected:
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FTOption(Type type, XPath2MemoryManager *memMgr)
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: FTSelection(type, memMgr) {}
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};
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typedef std::vector<FTOption*,XQillaAllocator<FTOption*> > VectorOfFTOptions;
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#endif
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