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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "structuredfieldvalue.hpp"
#include "iteratorhandler.h"
#include "weightedsetfieldvalue.h"
#include "arrayfieldvalue.h"
#include "structuredcache.h"
#include <vespa/vespalib/stllike/hash_map.hpp>
#include <vespa/log/log.h>
LOG_SETUP(".document.fieldvalue.structured");
using vespalib::IllegalArgumentException;
namespace document {
using namespace fieldvalue;
StructuredFieldValue::Iterator::Iterator()
: _iterator(),
_field(nullptr)
{
}
StructuredFieldValue::Iterator::Iterator(const StructuredFieldValue& owner, const Field* first)
: _iterator(owner.getIterator(first).release()),
_field(_iterator->getNextField())
{
}
void
StructuredFieldValue::setFieldValue(const Field & field, const FieldValue & value)
{
if (!field.getDataType().isValueType(value) &&
!value.getDataType()->isA(field.getDataType()))
{
throw IllegalArgumentException(
"Cannot assign value of type " + value.getDataType()->toString()
+ "with value : '" + value.toString()
+ "' to field " + field.getName() + " of type "
+ field.getDataType().toString() + ".", VESPA_STRLOC);
}
setFieldValue(field, FieldValue::UP(value.clone()));
}
FieldValue::UP
StructuredFieldValue::onGetNestedFieldValue(PathRange nested) const
{
FieldValue::UP fv = getValue(nested.cur().getFieldRef());
if (fv.get() != nullptr) {
PathRange next = nested.next();
if ( ! next.atEnd() ) {
return fv->getNestedFieldValue(next);
}
}
return fv;
}
void
StructuredFieldValue::remove(const Field& field) {
StructuredCache * cache = getCache();
if (cache) {
cache->remove(field);
} else {
removeFieldValue(field);
}
}
void
StructuredFieldValue::updateValue(const Field & field, FieldValue::UP value) const {
StructuredCache * cache = getCache();
if (cache) {
cache->set(field, std::move(value), ModificationStatus::MODIFIED);
} else {
const_cast<StructuredFieldValue&>(*this).setFieldValue(field, std::move(value));
}
}
void
StructuredFieldValue::returnValue(const Field & field, FieldValue::UP value) const {
StructuredCache * cache = getCache();
if (cache) {
cache->set(field, std::move(value), ModificationStatus::NOT_MODIFIED);
}
}
FieldValue::UP
StructuredFieldValue::getValue(const Field& field, FieldValue::UP container) const {
StructuredCache * cache = getCache();
if (cache) {
auto found = cache->find(field);
if (found == cache->end()) {
container = getFieldValue(field);
cache->set(field, FieldValue::UP(), ModificationStatus::NOT_MODIFIED);
} else {
container = std::move(found->second.value);
}
} else {
if (container) {
getFieldValue(field, *container);
} else {
container = getFieldValue(field);
}
}
return container;
}
ModificationStatus
StructuredFieldValue::onIterateNested(PathRange nested, IteratorHandler & handler) const
{
IteratorHandler::StructScope autoScope(handler, *this);
if ( ! nested.atEnd()) {
const FieldPathEntry & fpe = nested.cur();
if (fpe.getType() == FieldPathEntry::STRUCT_FIELD) {
const Field & field = fpe.getFieldRef();
FieldValue::UP value = getValue(field, FieldValue::UP());
LOG(spam, "fieldRef = %s", field.toString().c_str());
LOG(spam, "fieldValueToSet = %s", value ? value->toString().c_str() : "<null>");
ModificationStatus status = ModificationStatus::NOT_MODIFIED;
if (value) {
status = value->iterateNested(nested.next(), handler);
if (status == ModificationStatus::REMOVED) {
LOG(spam, "field exists, status = REMOVED");
const_cast<StructuredFieldValue&>(*this).remove(field);
status = ModificationStatus::MODIFIED;
} else if (status == ModificationStatus::MODIFIED) {
LOG(spam, "field exists, status = MODIFIED");
updateValue(field, std::move(value));
} else {
returnValue(field, std::move(value));
}
} else if (handler.createMissingPath()) {
LOG(spam, "createMissingPath is true");
status = fpe.getFieldValueToSet().iterateNested(nested.next(), handler);
if (status == ModificationStatus::MODIFIED) {
LOG(spam, "field did not exist, status = MODIFIED");
updateValue(field, fpe.stealFieldValueToSet());
}
} else {
LOG(spam, "field did not exist, returning NOT_MODIFIED");
}
return status;
} else {
throw IllegalArgumentException("Illegal field path for struct value");
}
} else {
ModificationStatus status = handler.modify(const_cast<StructuredFieldValue&>(*this));
if (status == ModificationStatus::REMOVED) {
LOG(spam, "field REMOVED");
} else if (handler.handleComplex(*this)) {
LOG(spam, "handleComplex");
std::vector<const Field*> fieldsToRemove;
for (const_iterator it(begin()), mt(end()); it != mt; ++it) {
ModificationStatus currStatus = getValue(it.field())->iterateNested(nested, handler);
if (currStatus == ModificationStatus::REMOVED) {
fieldsToRemove.push_back(&it.field());
status = ModificationStatus::MODIFIED;
} else if (currStatus == ModificationStatus::MODIFIED) {
status = ModificationStatus::MODIFIED;
}
}
for (const Field * toRemove : fieldsToRemove){
const_cast<StructuredFieldValue&>(*this).remove(*toRemove);
}
}
return status;
}
}
template std::unique_ptr<MapFieldValue> StructuredFieldValue::getAs<MapFieldValue>(const Field &field) const;
template std::unique_ptr<ArrayFieldValue> StructuredFieldValue::getAs<ArrayFieldValue>(const Field &field) const;
template std::unique_ptr<WeightedSetFieldValue> StructuredFieldValue::getAs<WeightedSetFieldValue>(const Field &field) const;
} // document
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