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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "removevalueupdate.h"
#include <vespa/document/base/field.h>
#include <vespa/document/datatype/arraydatatype.h>
#include <vespa/document/fieldvalue/fieldvalues.h>
#include <vespa/document/serialization/vespadocumentdeserializer.h>
#include <vespa/vespalib/objects/nbostream.h>
#include <vespa/document/util/serializableexceptions.h>
#include <vespa/vespalib/util/xmlstream.h>
#include <ostream>
using vespalib::IllegalArgumentException;
using vespalib::IllegalStateException;
using vespalib::nbostream;
using namespace vespalib::xml;
namespace document {
RemoveValueUpdate::RemoveValueUpdate(std::unique_ptr<FieldValue> key)
: ValueUpdate(Remove),
_key(std::move(key))
{}
RemoveValueUpdate::~RemoveValueUpdate() = default;
bool
RemoveValueUpdate::operator==(const ValueUpdate& other) const
{
if (other.getType() != Remove) return false;
const RemoveValueUpdate& o(static_cast<const RemoveValueUpdate&>(other));
if (*_key != *o._key) return false;
return true;
}
// Ensure that this update is compatible with given field.
void
RemoveValueUpdate::checkCompatibility(const Field& field) const
{
const CollectionDataType *type = field.getDataType().cast_collection();
if (type != nullptr) {
if (!type->getNestedType().isValueType(*_key)) {
throw IllegalArgumentException(
"Cannot remove value of type "
+ _key->getDataType()->toString() + " from field "
+ field.getName() + " of container type "
+ field.getDataType().toString(), VESPA_STRLOC);
}
} else {
throw IllegalArgumentException("Can not remove a value from field of type " + field.getDataType().toString(), VESPA_STRLOC);
}
}
// Apply this update to the given document.
bool
RemoveValueUpdate::applyTo(FieldValue& value) const
{
if (value.isA(FieldValue::Type::ARRAY)) {
ArrayFieldValue& doc(static_cast<ArrayFieldValue&>(value));
doc.remove(*_key);
} else if (value.isA(FieldValue::Type::WSET)) {
WeightedSetFieldValue& doc(static_cast<WeightedSetFieldValue&>(value));
doc.remove(*_key);
} else {
std::string err = vespalib::make_string("Unable to remove a value from a \"%s\" field value.", value.className());
throw IllegalStateException(err, VESPA_STRLOC);
}
return true;
}
void
RemoveValueUpdate::printXml(XmlOutputStream& xos) const
{
xos << XmlTag("remove") << *_key << XmlEndTag();
}
// Print this update in human readable form.
void
RemoveValueUpdate::print(std::ostream& out, bool, const std::string&) const
{
out << "RemoveValueUpdate(" << *_key << ")";
}
// Deserialize this update from the given buffer.
void
RemoveValueUpdate::deserialize(const DocumentTypeRepo& repo, const DataType& type, nbostream & stream)
{
const CollectionDataType * ct = type.cast_collection();
if (ct != nullptr) {
const CollectionDataType& c(static_cast<const CollectionDataType&>(type));
_key.reset(c.getNestedType().createFieldValue().release());
VespaDocumentDeserializer deserializer(repo, stream, Document::getNewestSerializationVersion());
deserializer.read(*_key);
} else {
throw DeserializeException("Can not perform remove operation on type " + type.toString() + ".", VESPA_STRLOC);
}
}
}
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