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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "handle.h"
#include "itermdata.h"
#include "simpletermfielddata.h"
#include <vespa/searchlib/query/weight.h>
#include <vector>
#include <cassert>
namespace search {
namespace fef {
/**
* Static match data for a single unit (term/phrase/etc).
**/
class SimpleTermData final : public ITermData
{
private:
query::Weight _weight;
uint32_t _numTerms;
uint32_t _termIndex;
uint32_t _uniqueId;
std::vector<SimpleTermFieldData> _fields;
public:
/**
* Creates a new object.
**/
SimpleTermData();
/**
* Side-cast copy constructor.
**/
SimpleTermData(const ITermData &rhs);
//----------- ITermData implementation ------------------------------------
/**
* Returns the term weight.
**/
query::Weight getWeight() const override { return _weight; }
/**
* Returns the number of terms represented by this term data object.
**/
uint32_t getPhraseLength() const override { return _numTerms; }
/**
* Obtain the unique id of this term. 0 means not set.
*
* @return unique id or 0
**/
uint32_t getUniqueId() const override { return _uniqueId; }
/**
* Get number of fields searched
**/
size_t numFields() const override { return _fields.size(); }
/**
* Direct access to data for individual fields
* @param i local index, must have: 0 <= i < numFields()
*/
const ITermFieldData &field(size_t i) const override {
return _fields[i];
}
/**
* Obtain information about a specific field that may be searched
* by this term. If the requested field is not searched by this
* term, NULL will be returned.
*
* @return term field data, or NULL if not found
**/
const ITermFieldData *lookupField(uint32_t fieldId) const override {
for (size_t fieldIdx(0), m(numFields()); fieldIdx < m; ++fieldIdx) {
const ITermFieldData &tfd = field(fieldIdx);
if (tfd.getFieldId() == fieldId) {
return &tfd;
}
}
return 0;
}
//----------- Utility functions -------------------------------------------
/**
* Sets the term weight.
**/
SimpleTermData &setWeight(query::Weight weight) {
_weight = weight;
return *this;
}
/**
* Sets the number of terms represented by this term data object.
**/
SimpleTermData &setPhraseLength(uint32_t numTerms) {
_numTerms = numTerms;
return *this;
}
/**
* Set the location of this term in the original user query.
*
* @return this to allow chaining.
* @param idx term index
**/
SimpleTermData &setTermIndex(uint32_t idx) {
_termIndex = idx;
return *this;
}
/**
* Set the unique id of this term. 0 means not set.
*
* @param id unique id or 0
* @return this to allow chaining.
**/
SimpleTermData &setUniqueId(uint32_t id) {
_uniqueId = id;
return *this;
}
/**
* Add a new field to the set that is searched by this term.
*
* @return the newly added field
* @param fieldId field id of the added field
**/
SimpleTermFieldData &addField(uint32_t fieldId) {
_fields.push_back(SimpleTermFieldData(fieldId));
return _fields.back();
}
/**
* Direct access to data for individual fields
* @param i local index, must have: 0 <= i < numFields()
*/
SimpleTermFieldData &field(size_t i) {
return _fields[i];
}
/**
* Obtain information about a specific field that may be searched
* by this term. If the requested field is not searched by this
* term, NULL will be returned.
*
* @return term field data, or NULL if not found
**/
SimpleTermFieldData *lookupField(uint32_t fieldId) {
for (size_t fieldIdx(0), m(numFields()); fieldIdx < m; ++fieldIdx) {
SimpleTermFieldData& tfd = field(fieldIdx);
if (tfd.getFieldId() == fieldId) {
return &tfd;
}
}
return 0;
}
};
/**
* convenience adapter for easy iteration
**/
class SimpleTermFieldRangeAdapter
{
SimpleTermData& _ref;
size_t _idx;
size_t _lim;
public:
explicit SimpleTermFieldRangeAdapter(SimpleTermData& ref)
: _ref(ref), _idx(0), _lim(ref.numFields())
{}
bool valid() const { return (_idx < _lim); }
SimpleTermFieldData& get() const { return _ref.field(_idx); }
void next() { assert(valid()); ++_idx; }
};
} // namespace fef
} // namespace search
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