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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "weightedsetfieldvalue.h"
#include <vespa/document/datatype/weightedsetdatatype.h>
#include <vespa/document/datatype/mapdatatype.h>
#include <vespa/document/base/exceptions.h>
#include <vespa/vespalib/util/xmlstream.h>
#include <ostream>
using vespalib::Identifiable;
using vespalib::IllegalArgumentException;
using vespalib::IllegalStateException;
using namespace vespalib::xml;
/// \todo TODO (was warning): Find a way to search through internal map without duplicating keys to create shared pointers.
namespace document {
using namespace fieldvalue;
namespace {
const DataType &getKeyType(const DataType &type) {
const WeightedSetDataType *wtype = dynamic_cast<const WeightedSetDataType *>(&type);
if (!wtype) {
throw IllegalArgumentException("Cannot generate a weighted set value with non-weighted set "
"type " + type.toString() + ".", VESPA_STRLOC);
}
return wtype->getNestedType();
}
} // namespace
WeightedSetFieldValue::WeightedSetFieldValue(const DataType &type)
: CollectionFieldValue(Type::WSET, type),
_map_type(std::make_shared<MapDataType>(getKeyType(type), *DataType::INT)),
_map(*_map_type)
{ }
WeightedSetFieldValue::WeightedSetFieldValue(const WeightedSetFieldValue &) = default;
WeightedSetFieldValue & WeightedSetFieldValue::operator = (const WeightedSetFieldValue &) = default;
WeightedSetFieldValue::~WeightedSetFieldValue() = default;
void WeightedSetFieldValue::verifyKey(const FieldValue & v)
{
if (!getNestedType().isValueType(v)) {
throw InvalidDataTypeException(*v.getDataType(), getNestedType(), VESPA_STRLOC);
}
}
bool
WeightedSetFieldValue::add(const FieldValue& key, int weight)
{
verifyKey(key);
const WeightedSetDataType & wdt(static_cast<const WeightedSetDataType&>(*_type));
if (wdt.removeIfZero() && (weight == 0)) {
_map.erase(key);
return false;
}
return _map.insert(FieldValue::UP(key.clone()), IntFieldValue::make(weight));
}
bool
WeightedSetFieldValue::addIgnoreZeroWeight(const FieldValue& key, int32_t weight)
{
verifyKey(key);
return _map.insert(FieldValue::UP(key.clone()), IntFieldValue::make(weight));
}
void
WeightedSetFieldValue::push_back(FieldValue::UP key, int weight)
{
_map.push_back(std::move(key), IntFieldValue::make(weight));
}
void
WeightedSetFieldValue::increment(const FieldValue& key, int val)
{
verifyKey(key);
WeightedFieldValueMap::iterator it(_map.find(key));
const WeightedSetDataType & wdt(static_cast<const WeightedSetDataType&>(*_type));
if (wdt.createIfNonExistent()) {
if (it == _map.end()) {
_map.insert(FieldValue::UP(key.clone()), FieldValue::UP(new IntFieldValue(val)));
} else {
IntFieldValue& fv = static_cast<IntFieldValue&>(*it->second);
fv.setValue(fv.getValue() + val);
if (wdt.removeIfZero() && fv.getValue() == 0) {
_map.erase(key);
}
}
} else {
if (it == _map.end()) {
throw IllegalStateException("Cannot modify non-existing entry in weightedset without createIfNonExistent set", VESPA_STRLOC);
}
IntFieldValue& fv = static_cast<IntFieldValue&>(*it->second);
fv.setValue(fv.getValue() + val);
if (wdt.removeIfZero() && fv.getValue() == 0) {
_map.erase(key);
}
}
}
int32_t
WeightedSetFieldValue::get(const FieldValue& key, int32_t defaultValue) const
{
WeightedFieldValueMap::const_iterator it = find(key);
return (it == end()
? defaultValue
: static_cast<const IntFieldValue&>(*it->second).getValue());
}
bool
WeightedSetFieldValue::containsValue(const FieldValue& key) const
{
return _map.contains(key);
}
bool
WeightedSetFieldValue::removeValue(const FieldValue& key)
{
bool result = _map.erase(key);
return result;
}
FieldValue&
WeightedSetFieldValue::assign(const FieldValue& value)
{
if (getDataType()->isValueType(value)) {
return operator=(static_cast<const WeightedSetFieldValue&>(value));
}
return FieldValue::assign(value);
}
int
WeightedSetFieldValue::compare(const FieldValue& other) const
{
int diff = CollectionFieldValue::compare(other);
if (diff != 0) return diff;
const WeightedSetFieldValue& wset(dynamic_cast<const WeightedSetFieldValue&>(other));
return _map.compare(wset._map);
}
void
WeightedSetFieldValue::printXml(XmlOutputStream& xos) const
{
for (const auto & entry : _map) {
const IntFieldValue& fv = static_cast<const IntFieldValue&>(*entry.second);
xos << XmlTag("item") << XmlAttribute("weight", fv.getValue())
<< *entry.first
<< XmlEndTag();
}
}
void
WeightedSetFieldValue::print(std::ostream& out, bool verbose, const std::string& indent) const
{
out << getDataType()->getName() << "(";
int count = 0;
for (const auto & entry : _map) {
if (count++ != 0) {
out << ",";
}
out << "\n" << indent << " ";
entry.first->print(out, verbose, indent + " ");
const IntFieldValue& fv = static_cast<const IntFieldValue&>(*entry.second);
out << " - weight " << fv.getValue();
}
if (_map.size() > 0) out << "\n" << indent;
out << ")";
}
WeightedSetFieldValue::const_iterator
WeightedSetFieldValue::find(const FieldValue& key) const
{
return _map.find(key);
}
WeightedSetFieldValue::iterator
WeightedSetFieldValue::find(const FieldValue& key)
{
return _map.find(key);
}
ModificationStatus
WeightedSetFieldValue::onIterateNested(PathRange nested, IteratorHandler & handler) const
{
return _map.iterateNestedImpl(nested, handler, *this);
}
} // document
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