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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "structdatatype.h"
#include <vespa/document/base/exceptions.h>
#include <vespa/document/fieldvalue/structfieldvalue.h>
#include <vespa/document/fieldvalue/document.h>
#include <vespa/vespalib/util/stringfmt.h>
#include <vespa/vespalib/stllike/hash_map.hpp>
#include <cassert>
#include <ostream>
#include <vespa/log/log.h>
LOG_SETUP(".document.datatype.struct");
namespace document {
using vespalib::make_string;
using vespalib::IllegalArgumentException;
StructDataType::StructDataType(vespalib::stringref name)
: StructuredDataType(name),
_nameFieldMap(),
_idFieldMap()
{ }
StructDataType::StructDataType(vespalib::stringref name, int32_t dataTypeId)
: StructuredDataType(name, dataTypeId),
_nameFieldMap(),
_idFieldMap()
{ }
StructDataType::StructDataType(const StructDataType & rhs) = default;
StructDataType::~StructDataType() = default;
void
StructDataType::print(std::ostream& out, bool verbose,
const std::string& indent) const
{
out << "StructDataType(" << getName();
if (verbose) {
out << ", id " << getId();
}
out << ")";
if (verbose) {
out << " {";
assert(_idFieldMap.size() == _nameFieldMap.size());
if (_nameFieldMap.size() > 0) {
// Use fieldset to print even though inefficient. Don't need
// efficient print, and this gets fields in order
Field::Set fields(getFieldSet());
for (const Field * field : fields) {
out << "\n" << indent << " " << field->toString(verbose);
}
out << "\n" << indent;
}
out << "}";
}
}
void
StructDataType::addField(const Field& field)
{
vespalib::string error = containsConflictingField(field);
if (error != "") {
throw IllegalArgumentException(make_string("Failed to add field '%s' to struct '%s': %s",
field.getName().data(), getName().c_str(),
error.c_str()), VESPA_STRLOC);
}
if (hasField(field.getName())) {
return;
}
std::shared_ptr<Field> newF(new Field(field));
_nameFieldMap[field.getName()] = newF;
_idFieldMap[field.getId()] = newF;
}
void
StructDataType::addInheritedField(const Field& field)
{
vespalib::string error = containsConflictingField(field);
if (error != "") {
// Deploy application should fail if overwriting a field with field
// of different type. Java version of document sees to this. C++
// just accepts what it gets, as to make it easier to alter the
// restrictions.
LOG(warning, "Inherited field %s conflicts with existing field. Field not added to struct %s: %s",
field.toString().c_str(), getName().c_str(), error.c_str());
return;
}
if (hasField(field.getName())) {
return;
}
std::shared_ptr<Field> newF(new Field(field));
_nameFieldMap[field.getName()] = newF;
_idFieldMap[field.getId()] = newF;
}
FieldValue::UP
StructDataType::createFieldValue() const
{
return std::make_unique<StructFieldValue>(*this);
}
const Field&
StructDataType::getField(vespalib::stringref name) const
{
StringFieldMap::const_iterator it(_nameFieldMap.find(name));
if (it == _nameFieldMap.end()) {
throw FieldNotFoundException(name, VESPA_STRLOC);
} else {
return *it->second;
}
}
namespace {
[[noreturn]] void throwFieldNotFound(int32_t fieldId, int version) __attribute__((noinline));
void throwFieldNotFound(int32_t fieldId, int version)
{
throw FieldNotFoundException(fieldId, version, VESPA_STRLOC);
}
}
const Field&
StructDataType::getField(int32_t fieldId) const
{
IntFieldMap::const_iterator it(_idFieldMap.find(fieldId));
if (__builtin_expect(it == _idFieldMap.end(), false)) {
throwFieldNotFound(fieldId, 7);
}
return *it->second;
}
bool
StructDataType::hasField(vespalib::stringref name) const noexcept {
return _nameFieldMap.find(name) != _nameFieldMap.end();
}
bool
StructDataType::hasField(int32_t fieldId) const noexcept {
return _idFieldMap.find(fieldId) != _idFieldMap.end();
}
Field::Set
StructDataType::getFieldSet() const
{
Field::Set::Builder builder;
builder.reserve(_idFieldMap.size());
for (const auto & entry : _idFieldMap) {
builder.add(entry.second.get());
}
return builder.build();
}
namespace {
// We cannot use Field::operator==(), since that only compares id.
bool differs(const Field &field1, const Field &field2) {
return field1.getId() != field2.getId()
|| field1.getName() != field2.getName();
}
} // namespace
vespalib::string
StructDataType::containsConflictingField(const Field& field) const
{
StringFieldMap::const_iterator it1( _nameFieldMap.find(field.getName()));
IntFieldMap::const_iterator it2(_idFieldMap.find(field.getId()));
if (it1 != _nameFieldMap.end() && differs(field, *it1->second)) {
return make_string("Name in use by field with different id %s.", it1->second->toString().c_str());
}
if (it2 != _idFieldMap.end() && differs(field, *it2->second)) {
return make_string("Field id in use by field %s.", it2->second->toString().c_str());
}
return "";
}
} // document
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