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/* Copyright 2013 10gen Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "mongo/platform/basic.h"
#include "mongo/bson/mutable/element.h"
#include "mongo/bson/mutable/algorithm.h"
#include "mongo/bson/mutable/document.h"
namespace mongo {
namespace mutablebson {
// Many of the methods of Element are actually implemented in document.cpp, since they need
// access to the firewalled implementation of Document.
Status Element::pushFront(Element e) {
return addChild(e, true);
}
Status Element::pushBack(Element e) {
return addChild(e, false);
}
Status Element::popFront() {
Element left = leftChild();
if (!left.ok())
return Status(ErrorCodes::EmptyArrayOperation, "popFront on empty");
return left.remove();
}
Status Element::popBack() {
Element right = rightChild();
if (!right.ok())
return Status(ErrorCodes::EmptyArrayOperation, "popBack on empty");
return right.remove();
}
Status Element::appendDouble(const StringData& fieldName, double value) {
return pushBack(getDocument().makeElementDouble(fieldName, value));
}
Status Element::appendString(const StringData& fieldName, const StringData& value) {
return pushBack(getDocument().makeElementString(fieldName, value));
}
Status Element::appendObject(const StringData& fieldName, const BSONObj& value) {
return pushBack(getDocument().makeElementObject(fieldName, value));
}
Status Element::appendArray(const StringData& fieldName, const BSONObj& value) {
return pushBack(getDocument().makeElementArray(fieldName, value));
}
Status Element::appendBinary(const StringData& fieldName,
uint32_t len, mongo::BinDataType binType,
const void* data) {
return pushBack(getDocument().makeElementBinary(fieldName, len, binType, data));
}
Status Element::appendUndefined(const StringData& fieldName) {
return pushBack(getDocument().makeElementUndefined(fieldName));
}
Status Element::appendOID(const StringData& fieldName, const OID value) {
return pushBack(getDocument().makeElementOID(fieldName, value));
}
Status Element::appendBool(const StringData& fieldName, bool value) {
return pushBack(getDocument().makeElementBool(fieldName, value));
}
Status Element::appendDate(const StringData& fieldName, Date_t value) {
return pushBack(getDocument().makeElementDate(fieldName, value));
}
Status Element::appendNull(const StringData& fieldName) {
return pushBack(getDocument().makeElementNull(fieldName));
}
Status Element::appendRegex(const StringData& fieldName,
const StringData& re, const StringData& flags) {
return pushBack(getDocument().makeElementRegex(fieldName, re, flags));
}
Status Element::appendDBRef(const StringData& fieldName,
const StringData& ns, const OID oid) {
return pushBack(getDocument().makeElementDBRef(fieldName, ns, oid));
}
Status Element::appendCode(const StringData& fieldName, const StringData& value) {
return pushBack(getDocument().makeElementCode(fieldName, value));
}
Status Element::appendSymbol(const StringData& fieldName, const StringData& value) {
return pushBack(getDocument().makeElementSymbol(fieldName, value));
}
Status Element::appendCodeWithScope(const StringData& fieldName,
const StringData& code, const BSONObj& scope) {
return pushBack(getDocument().makeElementCodeWithScope(fieldName, code, scope));
}
Status Element::appendInt(const StringData& fieldName, int32_t value) {
return pushBack(getDocument().makeElementInt(fieldName, value));
}
Status Element::appendTimestamp(const StringData& fieldName, OpTime value) {
return pushBack(getDocument().makeElementTimestamp(fieldName, value));
}
Status Element::appendLong(const StringData& fieldName, int64_t value) {
return pushBack(getDocument().makeElementLong(fieldName, value));
}
Status Element::appendMinKey(const StringData& fieldName) {
return pushBack(getDocument().makeElementMinKey(fieldName));
}
Status Element::appendMaxKey(const StringData& fieldName) {
return pushBack(getDocument().makeElementMaxKey(fieldName));
}
Status Element::appendElement(const BSONElement& value) {
return pushBack(getDocument().makeElement(value));
}
Status Element::appendSafeNum(const StringData& fieldName, SafeNum value) {
return pushBack(getDocument().makeElementSafeNum(fieldName, value));
}
std::string Element::toString() const {
if (!ok())
return "INVALID-MUTABLE-ELEMENT";
if (hasValue())
return getValue().toString();
const BSONType type = getType();
// The only types that sometimes don't have a value are Object and Array nodes.
dassert((type == mongo::Object) || (type == mongo::Array));
if (type == mongo::Object) {
BSONObjBuilder builder;
writeTo(&builder);
BSONObj obj = builder.obj();
return obj.firstElement().toString();
} else {
// It must be an array.
BSONObjBuilder builder;
BSONArrayBuilder arrayBuilder(builder.subarrayStart(getFieldName()));
writeArrayTo(&arrayBuilder);
arrayBuilder.done();
BSONObj obj = builder.obj();
return obj.firstElement().toString();
}
}
} // namespace mutablebson
} // namespace mongo
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