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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <vespa/vespalib/stllike/string.h>
namespace search::index {
class DocIdAndFeatures;
class Schema;
class WordDocElementWordPosFeatures;
/**
* Interface used to build an index for the set of index fields specified in a schema.
*
* The index should be built as follows:
* For each field add the set of unique words in sorted order.
* For each word add the set of document ids in sorted order.
* For each document id add the position information for that document.
*/
class IndexBuilder {
protected:
const Schema &_schema;
public:
IndexBuilder(const Schema &schema);
virtual ~IndexBuilder();
virtual void startField(uint32_t fieldId) = 0;
virtual void endField() = 0;
virtual void startWord(vespalib::stringref word) = 0;
virtual void endWord() = 0;
virtual void add_document(const DocIdAndFeatures &features) = 0;
};
}
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