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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 <vespa/document/datatype/documenttype.h>
#include <vespa/document/fieldvalue/document.h>
#include <vespa/vespalib/util/exceptions.h>
#include <vespa/vespalib/util/stringfmt.h>
#include <iomanip>
#include <vespa/log/log.h>
#include <vespa/document/base/exceptions.h>
LOG_SETUP(".document.datatype.document");
using vespalib::IllegalArgumentException;
using vespalib::make_string;
using vespalib::stringref;
namespace document {
IMPLEMENT_IDENTIFIABLE(DocumentType, StructuredDataType);
DocumentType::DocumentType()
{
}
DocumentType::DocumentType(const stringref& name, int32_t id)
: StructuredDataType(name, id),
_inheritedTypes(),
_ownedFields(new StructDataType(name + ".header")),
_fields(_ownedFields.get()),
_fieldSets()
{
if (name != "document") {
_inheritedTypes.push_back(DataType::DOCUMENT);
}
}
DocumentType::DocumentType(const stringref& name, int32_t id, const StructDataType& fields)
: StructuredDataType(name, id),
_inheritedTypes(),
_fields(&fields),
_fieldSets()
{
if (name != "document") {
_inheritedTypes.push_back(DataType::DOCUMENT);
}
}
DocumentType::DocumentType(const stringref& name)
: StructuredDataType(name),
_inheritedTypes(),
_ownedFields(new StructDataType(name + ".header")),
_fields(_ownedFields.get()),
_fieldSets()
{
if (name != "document") {
_inheritedTypes.push_back(DataType::DOCUMENT);
}
}
DocumentType::DocumentType(const stringref& name, const StructDataType& fields)
: StructuredDataType(name),
_inheritedTypes(),
_fields(&fields),
_fieldSets()
{
if (name != "document") {
_inheritedTypes.push_back(DataType::DOCUMENT);
}
}
DocumentType::~DocumentType()
{
}
DocumentType &
DocumentType::addFieldSet(const vespalib::string & name, const FieldSet::Fields & fields)
{
_fieldSets[name] = FieldSet(name, fields);
return *this;
}
const DocumentType::FieldSet *
DocumentType::getFieldSet(const vespalib::string & name) const
{
FieldSetMap::const_iterator it(_fieldSets.find(name));
return (it != _fieldSets.end()) ? & it->second : NULL;
}
void
DocumentType::addField(const Field& field)
{
if (_fields->hasField(field.getName())) {
throw IllegalArgumentException( "A field already exists with name " + field.getName(), VESPA_STRLOC);
} else if (_fields->hasField(field)) {
throw IllegalArgumentException(make_string("A field already exists with id %i.", field.getId()), VESPA_STRLOC);
} else if (!_ownedFields.get()) {
throw vespalib::IllegalStateException(make_string(
"Cannot add field %s to a DocumentType that does not "
"own its fields.", field.getName().c_str()), VESPA_STRLOC);
}
_ownedFields->addField(field);
}
void
DocumentType::inherit(const DocumentType &docType) {
if (docType.getName() == "document") {
return;
}
if (docType.isA(*this)) {
throw IllegalArgumentException(
"Document type " + docType.toString() + " already inherits type "
+ toString() + ". Cannot add cyclic dependencies.", VESPA_STRLOC);
}
// If we already inherits this type, there is no point in adding it
// again.
if (isA(docType)) {
// If we already directly inherits it, complain
for (std::vector<const DocumentType *>::const_iterator
it = _inheritedTypes.begin(); it != _inheritedTypes.end(); ++it)
{
if (**it == docType) {
throw IllegalArgumentException(
"DocumentType " + getName() + " already inherits "
"document type " + docType.getName(), VESPA_STRLOC);
}
}
// Indirectly already inheriting it is oki, as this can happen
// due to inherited documents inheriting the same type.
LOG(info, "Document type %s inherits document type %s from multiple "
"types.", getName().c_str(), docType.getName().c_str());
return;
}
// Add non-conflicting types.
Field::Set fs = docType._fields->getFieldSet();
for (Field::Set::const_iterator it = fs.begin(); it != fs.end(); ++it) {
if (!_ownedFields.get()) {
_ownedFields.reset(_fields->clone());
_fields = _ownedFields.get();
}
_ownedFields->addInheritedField(**it);
}
// If we inherit default document type Document.0, remove that if adding
// another parent, as that has to also inherit Document
if (_inheritedTypes.size() == 1 && *_inheritedTypes[0] == *DataType::DOCUMENT) {
_inheritedTypes.clear();
}
_inheritedTypes.push_back(&docType);
}
bool
DocumentType::isA(const DataType& other) const
{
for (std::vector<const DocumentType *>::const_iterator
it = _inheritedTypes.begin(); it != _inheritedTypes.end(); ++it)
{
if ((*it)->isA(other)) return true;
}
return (*this == other);
}
FieldValue::UP
DocumentType::createFieldValue() const
{
return FieldValue::UP(new Document(*this, DocumentId("doc::")));
}
void
DocumentType::print(std::ostream& out, bool verbose,
const std::string& indent) const
{
out << "DocumentType(" << getName();
if (verbose) {
out << ", id " << getId();
}
out << ")";
if (verbose) {
if (!_inheritedTypes.empty()) {
std::vector<const DocumentType *>::const_iterator it(
_inheritedTypes.begin());
out << "\n" << indent << " : ";
(*it)->print(out, false, "");
while (++it != _inheritedTypes.end()) {
out << ",\n" << indent << " ";
(*it)->print(out, false, "");
}
}
out << " {\n" << indent << " ";
_fields->print(out, verbose, indent + " ");
out << "\n" << indent << "}";
}
}
bool
DocumentType::operator==(const DataType& other) const
{
if (&other == this) return true;
if (!DataType::operator==(other)) return false;
const DocumentType* o(dynamic_cast<const DocumentType*>(&other));
if (o == 0) return false;
if (*_fields != *o->_fields) return false;
if (_inheritedTypes.size() != o->_inheritedTypes.size()) return false;
std::vector<const DocumentType *>::const_iterator it1(_inheritedTypes.begin());
std::vector<const DocumentType *>::const_iterator it2(o->_inheritedTypes.begin());
while (it1 != _inheritedTypes.end()) {
if (**it1 != **it2) return false;
++it1;
++it2;
}
return true;
}
const Field&
DocumentType::getField(const stringref& name) const
{
return _fields->getField(name);
}
const Field&
DocumentType::getField(int fieldId) const
{
return _fields->getField(fieldId);
}
bool DocumentType::hasField(const stringref &name) const {
return _fields->hasField(name);
}
bool DocumentType::hasField(int fieldId) const {
return _fields->hasField(fieldId);
}
Field::Set
DocumentType::getFieldSet() const
{
return _fields->getFieldSet();
}
DocumentType *
DocumentType::clone() const {
return new DocumentType(*this);
}
} // document
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