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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "attribute_combiner_dfw.h"
#include "copy_dfw.h"
#include "docsum_field_writer_commands.h"
#include "docsum_field_writer_factory.h"
#include "document_id_dfw.h"
#include "empty_dfw.h"
#include "geoposdfw.h"
#include "idocsumenvironment.h"
#include "juniperdfw.h"
#include "matched_elements_filter_dfw.h"
#include "positionsdfw.h"
#include "rankfeaturesdfw.h"
#include "summaryfeaturesdfw.h"
#include <vespa/searchlib/common/matching_elements_fields.h>
#include <vespa/vespalib/util/exceptions.h>
using vespalib::IllegalArgumentException;
namespace search::docsummary {
DocsumFieldWriterFactory::DocsumFieldWriterFactory(bool use_v8_geo_positions, const IDocsumEnvironment& env, const IQueryTermFilterFactory& query_term_filter_factory)
: _use_v8_geo_positions(use_v8_geo_positions),
_env(env),
_query_term_filter_factory(query_term_filter_factory)
{
}
DocsumFieldWriterFactory::~DocsumFieldWriterFactory() = default;
bool
DocsumFieldWriterFactory::has_attribute_manager() const noexcept
{
return getEnvironment().getAttributeManager() != nullptr;
}
namespace {
void
throw_if_nullptr(const std::unique_ptr<DocsumFieldWriter>& writer,
const vespalib::string& command)
{
if (writer.get() == nullptr) {
throw IllegalArgumentException("Failed to create docsum field writer for command '" + command + "'.");
}
}
void
throw_missing_source(const vespalib::string& command)
{
throw IllegalArgumentException("Missing source for command '" + command + "'.");
}
}
std::unique_ptr<DocsumFieldWriter>
DocsumFieldWriterFactory::create_docsum_field_writer(const vespalib::string& field_name,
const vespalib::string& command,
const vespalib::string& source,
std::shared_ptr<MatchingElementsFields> matching_elems_fields)
{
std::unique_ptr<DocsumFieldWriter> fieldWriter;
if (command == command::dynamic_teaser) {
if ( ! source.empty() ) {
auto fw = std::make_unique<DynamicTeaserDFW>(getEnvironment().getJuniper());
auto fw_ptr = fw.get();
fieldWriter = std::move(fw);
if (!fw_ptr->Init(field_name.c_str(), source, _query_term_filter_factory)) {
throw IllegalArgumentException("Failed to initialize DynamicTeaserDFW.");
}
} else {
throw_missing_source(command);
}
} else if (command == command::summary_features) {
fieldWriter = std::make_unique<SummaryFeaturesDFW>();
} else if (command == command::rank_features) {
fieldWriter = std::make_unique<RankFeaturesDFW>();
} else if (command == command::empty) {
fieldWriter = std::make_unique<EmptyDFW>();
} else if (command == command::copy) {
if ( ! source.empty() ) {
fieldWriter = std::make_unique<CopyDFW>(source);
} else {
throw_missing_source(command);
}
} else if (command == command::abs_distance) {
if (has_attribute_manager()) {
fieldWriter = AbsDistanceDFW::create(source.c_str(), getEnvironment().getAttributeManager());
throw_if_nullptr(fieldWriter, command);
}
} else if (command == command::positions) {
if (has_attribute_manager()) {
fieldWriter = PositionsDFW::create(source.c_str(), getEnvironment().getAttributeManager(), _use_v8_geo_positions);
throw_if_nullptr(fieldWriter, command);
}
} else if (command == command::geo_position) {
if (has_attribute_manager()) {
fieldWriter = GeoPositionDFW::create(source.c_str(), getEnvironment().getAttributeManager(), _use_v8_geo_positions);
throw_if_nullptr(fieldWriter, command);
}
} else if (command == command::attribute) {
if (has_attribute_manager()) {
fieldWriter = AttributeDFWFactory::create(*getEnvironment().getAttributeManager(), source);
// Missing attribute vector is allowed, so throw_if_nullptr() is NOT used.
}
} else if (command == command::attribute_combiner) {
if (has_attribute_manager()) {
auto attr_ctx = getEnvironment().getAttributeManager()->createContext();
const vespalib::string& source_field = source.empty() ? field_name : source;
fieldWriter = AttributeCombinerDFW::create(source_field, *attr_ctx, false, std::shared_ptr<MatchingElementsFields>());
throw_if_nullptr(fieldWriter, command);
}
} else if (command == command::matched_attribute_elements_filter) {
const vespalib::string& source_field = source.empty() ? field_name : source;
if (has_attribute_manager()) {
auto attr_ctx = getEnvironment().getAttributeManager()->createContext();
if (attr_ctx->getAttribute(source_field) != nullptr) {
fieldWriter = AttributeDFWFactory::create(*getEnvironment().getAttributeManager(), source_field, true, matching_elems_fields);
} else {
fieldWriter = AttributeCombinerDFW::create(source_field, *attr_ctx, true, matching_elems_fields);
}
throw_if_nullptr(fieldWriter, command);
}
} else if (command == command::matched_elements_filter) {
const vespalib::string& source_field = source.empty() ? field_name : source;
if (has_attribute_manager()) {
auto attr_ctx = getEnvironment().getAttributeManager()->createContext();
fieldWriter = MatchedElementsFilterDFW::create(source_field,*attr_ctx, matching_elems_fields);
throw_if_nullptr(fieldWriter, command);
}
} else if (command == command::documentid) {
fieldWriter = std::make_unique<DocumentIdDFW>();
} else {
throw IllegalArgumentException("Unknown command '" + command + "'.");
}
return fieldWriter;
}
}
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