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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "positionsdfw.h"
#include "docsumstate.h"
#include <vespa/searchlib/attribute/iattributemanager.h>
#include <vespa/searchlib/common/location.h>
#include <vespa/vespalib/stllike/asciistream.h>
#include <cmath>
#include <climits>
#include <vespa/log/log.h>
LOG_SETUP(".searchlib.docsummary.positionsdfw");
namespace search::docsummary {
using search::attribute::IAttributeContext;
using search::attribute::IAttributeVector;
using search::attribute::BasicType;
using search::common::Location;
AbsDistanceDFW::AbsDistanceDFW(const vespalib::string & attrName) :
AttrDFW(attrName)
{ }
uint64_t
AbsDistanceDFW::findMinDistance(uint32_t docid, GetDocsumsState *state)
{
search::common::Location &location = *state->_parsedLocation;
const IAttributeVector & attribute(vec(*state));
uint64_t absdist = std::numeric_limits<int64_t>::max();
int32_t docx = 0;
int32_t docy = 0;
std::vector<IAttributeVector::largeint_t> pos(16);
uint32_t numValues = attribute.get(docid, &pos[0], pos.size());
if (numValues > pos.size()) {
pos.resize(numValues);
numValues = attribute.get(docid, &pos[0], pos.size());
assert(numValues <= pos.size());
}
for (uint32_t i = 0; i < numValues; i++) {
int64_t docxy(pos[i]);
vespalib::geo::ZCurve::decode(docxy, &docx, &docy);
uint32_t dx;
if (location.getX() > docx) {
dx = location.getX() - docx;
} else {
dx = docx - location.getX();
}
if (location.getXAspect() != 0) {
dx = ((uint64_t) dx * location.getXAspect()) >> 32;
}
uint32_t dy;
if (location.getY() > docy) {
dy = location.getY() - docy;
} else {
dy = docy - location.getY();
}
uint64_t dist2 = dx * (uint64_t) dx +
dy * (uint64_t) dy;
if (dist2 < absdist) {
absdist = dist2;
}
}
return (uint64_t) std::sqrt((double) absdist);
}
void
AbsDistanceDFW::insertField(uint32_t docid, GetDocsumsState *state, ResType type, vespalib::slime::Inserter &target)
{
bool forceEmpty = true;
const vespalib::string &locationStr = state->_args.getLocation();
if (locationStr.size() > 0) {
if (!state->_parsedLocation) {
state->_callback.ParseLocation(state);
}
assert(state->_parsedLocation);
if (state->_parsedLocation->getParseError() == nullptr) {
forceEmpty = false;
}
}
if (forceEmpty) return;
uint64_t absdist = findMinDistance(docid, state);
if (type == RES_INT) {
target.insertLong(absdist);
} else {
vespalib::string value = vespalib::stringify(absdist);
vespalib::Memory data(value.c_str(), value.size());
if (type == RES_STRING ||
type == RES_LONG_STRING ||
type == RES_XMLSTRING)
{
target.insertString(data);
}
if (type == RES_LONG_DATA ||
type == RES_DATA)
{
target.insertData(data);
}
}
}
//--------------------------------------------------------------------------
PositionsDFW::PositionsDFW(const vespalib::string & attrName) :
AttrDFW(attrName)
{
}
namespace {
vespalib::asciistream
formatField(const attribute::IAttributeVector &attribute, uint32_t docid, ResType type) {
vespalib::asciistream target;
int32_t docx = 0;
int32_t docy = 0;
std::vector<IAttributeVector::largeint_t> pos(16);
uint32_t numValues = attribute.get(docid, &pos[0], pos.size());
if (numValues > pos.size()) {
pos.resize(numValues);
numValues = attribute.get(docid, &pos[0], pos.size());
assert(numValues <= pos.size());
}
LOG(debug, "docid=%d, numValues=%d", docid, numValues);
bool isShort = !IDocsumFieldWriter::IsBinaryCompatible(type, RES_LONG_STRING);
for (uint32_t i = 0; i < numValues; i++) {
int64_t docxy(pos[i]);
vespalib::geo::ZCurve::decode(docxy, &docx, &docy);
if (docx == 0 && docy == INT_MIN) {
LOG(spam, "skipping empty zcurve value");
continue;
}
double degrees_ns = docy;
degrees_ns /= 1000000.0;
double degrees_ew = docx;
degrees_ew /= 1000000.0;
target << "<position x=\"" << docx << "\" y=\"" << docy << "\"";
target << " latlong=\"";
target << vespalib::FloatSpec::fixed;
if (degrees_ns < 0) {
target << "S" << (-degrees_ns);
} else {
target << "N" << degrees_ns;
}
target << ";";
if (degrees_ew < 0) {
target << "W" << (-degrees_ew);
} else {
target << "E" << degrees_ew;
}
target << "\" />";
if (isShort && target.size() > 30000) {
target << "<overflow />";
break;
}
}
return target;
}
}
void
PositionsDFW::insertField(uint32_t docid, GetDocsumsState * dsState, ResType type, vespalib::slime::Inserter &target)
{
vespalib::asciistream val(formatField(vec(*dsState), docid, type));
target.insertString(vespalib::Memory(val.c_str(), val.size()));
}
//--------------------------------------------------------------------------
PositionsDFW::UP createPositionsDFW(const char *attribute_name, IAttributeManager *attribute_manager)
{
PositionsDFW::UP ret;
if (attribute_manager != nullptr) {
if (!attribute_name) {
LOG(debug, "createPositionsDFW: missing attribute name '%p'", attribute_name);
return ret;
}
IAttributeContext::UP context = attribute_manager->createContext();
if (!context.get()) {
LOG(debug, "createPositionsDFW: could not create context from attribute manager");
return ret;
}
const IAttributeVector *attribute = context->getAttribute(attribute_name);
if (!attribute) {
LOG(debug, "createPositionsDFW: could not get attribute '%s' from context", attribute_name);
return ret;
}
}
return std::make_unique<PositionsDFW>(attribute_name);
}
AbsDistanceDFW::UP createAbsDistanceDFW(const char *attribute_name, IAttributeManager *attribute_manager)
{
AbsDistanceDFW::UP ret;
if (attribute_manager != nullptr) {
if (!attribute_name) {
LOG(debug, "createAbsDistanceDFW: missing attribute name '%p'", attribute_name);
return ret;
}
IAttributeContext::UP context = attribute_manager->createContext();
if (!context.get()) {
LOG(debug, "createAbsDistanceDFW: could not create context from attribute manager");
return ret;
}
const IAttributeVector *attribute = context->getAttribute(attribute_name);
if (!attribute) {
LOG(debug, "createAbsDistanceDFW: could not get attribute '%s' from context", attribute_name);
return ret;
}
}
return std::make_unique<AbsDistanceDFW>(attribute_name);
}
}
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