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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <vespa/document/fieldvalue/fieldvalue.h>
#include <vespa/document/fieldvalue/iteratorhandler.h>
#include <vespa/vsm/common/charbuffer.h>
namespace vsm {
/**
* This class is used to flatten out and write a complex field value.
* A separator string is inserted between primitive field values.
**/
class FlattenDocsumWriter : public document::fieldvalue::IteratorHandler {
private:
CharBuffer _output;
vespalib::string _separator;
bool _useSeparator;
void considerSeparator();
void onPrimitive(uint32_t, const Content & c) override;
public:
FlattenDocsumWriter(const vespalib::string & separator = " ");
~FlattenDocsumWriter();
void setSeparator(const vespalib::string & separator) { _separator = separator; }
const CharBuffer & getResult() const { return _output; }
void clear() {
_output.reset();
_separator = " ";
_useSeparator = false;
}
};
}
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