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// Copyright 2018 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "attribute_combiner_dfw.h"
#include "array_attribute_combiner_dfw.h"
#include "docsum_field_writer_state.h"
#include "docsumstate.h"
#include <vespa/searchlib/attribute/attributeguard.h>
#include <vespa/searchlib/attribute/attributevector.h>
#include <vespa/searchlib/attribute/iattributemanager.h>
#include <algorithm>
#include <vespa/log/log.h>
LOG_SETUP(".searchsummary.docsummary.attribute_combiner_dfw");
using search::AttributeGuard;
using search::AttributeVector;
using search::attribute::CollectionType;
namespace search::docsummary {
AttributeCombinerDFW::AttributeCombinerDFW(const vespalib::string &fieldName)
: IDocsumFieldWriter(),
_stateIndex(0),
_fieldName(fieldName)
{
}
AttributeCombinerDFW::~AttributeCombinerDFW() = default;
bool
AttributeCombinerDFW::IsGenerated() const
{
return true;
}
bool
AttributeCombinerDFW::setFieldWriterStateIndex(uint32_t fieldWriterStateIndex)
{
_stateIndex = fieldWriterStateIndex;
return true;
}
std::unique_ptr<IDocsumFieldWriter>
AttributeCombinerDFW::create(const vespalib::string &fieldName, IAttributeManager &attrMgr)
{
// Note: Doesn't handle imported attributes
std::vector<AttributeGuard> attrs;
attrMgr.getAttributeList(attrs);
vespalib::string prefix = fieldName + ".";
vespalib::string keyName = prefix + "key";
vespalib::string valuePrefix = prefix + "value.";
std::vector<vespalib::string> mapFields;
std::vector<vespalib::string> arrayFields;
bool foundKey = false;
for (const auto &guard : attrs) {
vespalib::string name = guard->getName();
if (name.substr(0, prefix.size()) != prefix) {
continue;
}
auto collType = guard->getCollectionType();
if (collType != CollectionType::Type::ARRAY) {
LOG(warning, "Attribute %s is not an array attribute", name.c_str());
return std::unique_ptr<IDocsumFieldWriter>();
}
if (name.substr(0, valuePrefix.size()) == valuePrefix) {
mapFields.emplace_back(name.substr(valuePrefix.size()));
} else {
arrayFields.emplace_back(name.substr(prefix.size()));
if (name == keyName) {
foundKey = true;
}
}
}
if (!mapFields.empty()) {
if (!foundKey) {
LOG(warning, "Missing key attribute '%s', have value attributes for map", keyName.c_str());
return std::unique_ptr<IDocsumFieldWriter>();
}
if (arrayFields.size() != 1u) {
LOG(warning, "Could not determine if field '%s' is array or map of struct", fieldName.c_str());
return std::unique_ptr<IDocsumFieldWriter>();
}
LOG(warning, "map of struct is not yet supported for field '%s'", fieldName.c_str());
return std::unique_ptr<IDocsumFieldWriter>();
}
std::sort(arrayFields.begin(), arrayFields.end());
return std::make_unique<ArrayAttributeCombinerDFW>(fieldName, arrayFields);
}
void
AttributeCombinerDFW::insertField(uint32_t docid,
GeneralResult *,
GetDocsumsState *state,
ResType,
vespalib::slime::Inserter &target)
{
auto &fieldWriterState = state->_fieldWriterStates[_stateIndex];
if (!fieldWriterState) {
fieldWriterState = allocFieldWriterState(*state->_attrCtx);
}
fieldWriterState->insertField(docid, target);
}
}
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