////////////////////////////////////////////////////////////////////////////////
/// @brief abstract base request handler
///
/// @file
///
/// DISCLAIMER
///
/// Copyright 2014 ArangoDB GmbH, Cologne, Germany
/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
///
/// 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.
///
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
///
/// @author Dr. Frank Celler
/// @author Copyright 2014, ArangoDB GmbH, Cologne, Germany
/// @author Copyright 2010-2013, triAGENS GmbH, Cologne, Germany
////////////////////////////////////////////////////////////////////////////////

#include "RestVocbaseBaseHandler.h"

#include "Basics/JsonHelper.h"
#include "Basics/StringUtils.h"
#include "Basics/conversions.h"
#include "Basics/string-buffer.h"
#include "Basics/tri-strings.h"
#include "Rest/HttpRequest.h"
#include "ShapedJson/shaped-json.h"
#include "Utils/DocumentHelper.h"
#include "VocBase/document-collection.h"

using namespace std;
using namespace triagens::basics;
using namespace triagens::rest;
using namespace triagens::arango;

// -----------------------------------------------------------------------------
// --SECTION--                                         REST_VOCBASE_BASE_HANDLER
// -----------------------------------------------------------------------------

// -----------------------------------------------------------------------------
// --SECTION--                                                  public constants
// -----------------------------------------------------------------------------

////////////////////////////////////////////////////////////////////////////////
/// @brief batch path
////////////////////////////////////////////////////////////////////////////////

const string RestVocbaseBaseHandler::BATCH_PATH = "/_api/batch";

////////////////////////////////////////////////////////////////////////////////
/// @brief document path
////////////////////////////////////////////////////////////////////////////////

const string RestVocbaseBaseHandler::DOCUMENT_PATH = "/_api/document";

////////////////////////////////////////////////////////////////////////////////
/// @brief documents import path
////////////////////////////////////////////////////////////////////////////////

const string RestVocbaseBaseHandler::DOCUMENT_IMPORT_PATH = "/_api/import";

////////////////////////////////////////////////////////////////////////////////
/// @brief document path
////////////////////////////////////////////////////////////////////////////////

const string RestVocbaseBaseHandler::EDGE_PATH = "/_api/edge";

////////////////////////////////////////////////////////////////////////////////
/// @brief replication path
////////////////////////////////////////////////////////////////////////////////

const string RestVocbaseBaseHandler::REPLICATION_PATH = "/_api/replication";

////////////////////////////////////////////////////////////////////////////////
/// @brief upload path
////////////////////////////////////////////////////////////////////////////////

const string RestVocbaseBaseHandler::UPLOAD_PATH = "/_api/upload";

////////////////////////////////////////////////////////////////////////////////
/// @brief name of the queue
////////////////////////////////////////////////////////////////////////////////

const string RestVocbaseBaseHandler::QUEUE_NAME = "STANDARD";

// -----------------------------------------------------------------------------
// --SECTION--                                      constructors and destructors
// -----------------------------------------------------------------------------

////////////////////////////////////////////////////////////////////////////////
/// @brief constructor
////////////////////////////////////////////////////////////////////////////////

RestVocbaseBaseHandler::RestVocbaseBaseHandler (HttpRequest* request)
  : RestBaseHandler(request),
    _context(static_cast<VocbaseContext*>(request->getRequestContext())),
    _vocbase(_context->getVocbase()) {
}

////////////////////////////////////////////////////////////////////////////////
/// @brief destructor
////////////////////////////////////////////////////////////////////////////////

RestVocbaseBaseHandler::~RestVocbaseBaseHandler () {
}

// -----------------------------------------------------------------------------
// --SECTION--                                                 protected methods
// -----------------------------------------------------------------------------

////////////////////////////////////////////////////////////////////////////////
/// @brief check if a collection needs to be created on the fly
///
/// this method will check the "createCollection" attribute of the request. if
/// it is set to true, it will verify that the named collection actually exists.
/// if the collection does not yet exist, it will create it on the fly.
/// if the "createCollection" attribute is not set or set to false, nothing will
/// happen, and the collection name will not be checked
////////////////////////////////////////////////////////////////////////////////

bool RestVocbaseBaseHandler::checkCreateCollection (string const& name,
                                                    TRI_col_type_e type) {
  bool found;
  char const* valueStr = _request->value("createCollection", found);

  if (! found) {
    // "createCollection" parameter not specified
    return true;
  }

  if (! StringUtils::boolean(valueStr)) {
    // "createCollection" parameter specified, but with non-true value
    return true;
  }


  if (ServerState::instance()->isCoordinator() ||
      ServerState::instance()->isDBserver()) {
    // create-collection is not supported in a cluster
    generateTransactionError(name, TRI_ERROR_CLUSTER_UNSUPPORTED);
    return false;
  }


  TRI_vocbase_col_t* collection = TRI_FindCollectionByNameOrCreateVocBase(_vocbase,
                                                                          name.c_str(),
                                                                          type);

  if (collection == nullptr) {
    generateTransactionError(name, TRI_errno());
    return false;
  }

  return true;
}

////////////////////////////////////////////////////////////////////////////////
/// @brief generates a HTTP 201 or 202 response
////////////////////////////////////////////////////////////////////////////////

void RestVocbaseBaseHandler::generate20x (HttpResponse::HttpResponseCode responseCode,
                                          string const& collectionName,
                                          TRI_voc_key_t key,
                                          TRI_voc_rid_t rid) {
  string const&& handle = DocumentHelper::assembleDocumentId(collectionName, key);
  string const&& rev = StringUtils::itoa(rid);

  _response = createResponse(responseCode);
  _response->setContentType("application/json; charset=utf-8");

  if (responseCode != HttpResponse::OK) {
    // 200 OK is sent is case of delete or update.
    // in these cases we do not return etag nor location
    _response->setHeader("etag", 4, "\"" + rev + "\"");
    // handle does not need to be RFC 2047-encoded

    if (_request->compatibility() < 10400L) {
      // pre-1.4 location header (e.g. /_api/document/xyz)
      _response->setHeader("location", 8, string(DOCUMENT_PATH + "/" + handle));
    }
    else {
      // 1.4+ location header (e.g. /_db/_system/_api/document/xyz)
      _response->setHeader("location", 8, string("/_db/" + _request->databaseName() + DOCUMENT_PATH + "/" + handle));
    }
  }

  // _id and _key are safe and do not need to be JSON-encoded
  _response->body()
    .appendText("{\"error\":false,\"" TRI_VOC_ATTRIBUTE_ID "\":\"")
    .appendText(handle)
    .appendText("\",\"" TRI_VOC_ATTRIBUTE_REV "\":\"")
    .appendText(rev)
    .appendText("\",\"" TRI_VOC_ATTRIBUTE_KEY "\":\"")
    .appendText(key)
    .appendText("\"}");
}

////////////////////////////////////////////////////////////////////////////////
/// @brief generates not implemented
////////////////////////////////////////////////////////////////////////////////

void RestVocbaseBaseHandler::generateNotImplemented (string const& path) {
  generateError(HttpResponse::NOT_IMPLEMENTED,
                TRI_ERROR_NOT_IMPLEMENTED,
                "'" + path + "' not implemented");
}

////////////////////////////////////////////////////////////////////////////////
/// @brief generates forbidden
////////////////////////////////////////////////////////////////////////////////

void RestVocbaseBaseHandler::generateForbidden () {
  generateError(HttpResponse::FORBIDDEN,
                TRI_ERROR_FORBIDDEN,
                "operation forbidden");
}

////////////////////////////////////////////////////////////////////////////////
/// @brief generates precondition failed
////////////////////////////////////////////////////////////////////////////////

void RestVocbaseBaseHandler::generatePreconditionFailed (string const& collectionName,
                                                         TRI_voc_key_t key,
                                                         TRI_voc_rid_t rid) {
  string const&& rev = StringUtils::itoa(rid);

  _response = createResponse(HttpResponse::PRECONDITION_FAILED);
  _response->setContentType("application/json; charset=utf-8");
  _response->setHeader("etag", 4, "\"" + rev + "\"");

  // _id and _key are safe and do not need to be JSON-encoded
  _response->body()
    .appendText("{\"error\":true,\"code\":")
    .appendInteger((int32_t) HttpResponse::PRECONDITION_FAILED)
    .appendText(",\"errorNum\":")
    .appendInteger((int32_t) TRI_ERROR_ARANGO_CONFLICT)
    .appendText(",\"errorMessage\":\"precondition failed\"")
    .appendText(",\"" TRI_VOC_ATTRIBUTE_ID "\":\"")
    .appendText(DocumentHelper::assembleDocumentId(collectionName, key))
    .appendText("\",\"" TRI_VOC_ATTRIBUTE_REV "\":\"")
    .appendText(StringUtils::itoa(rid))
    .appendText("\",\"" TRI_VOC_ATTRIBUTE_KEY "\":\"")
    .appendText(key)
    .appendText("\"}");
}

////////////////////////////////////////////////////////////////////////////////
/// @brief generates not modified
////////////////////////////////////////////////////////////////////////////////

void RestVocbaseBaseHandler::generateNotModified (TRI_voc_rid_t rid) {
  string const&& rev = StringUtils::itoa(rid);

  _response = createResponse(HttpResponse::NOT_MODIFIED);
  _response->setHeader("etag", 4, "\"" + rev + "\"");
}

////////////////////////////////////////////////////////////////////////////////
/// @brief generates next entry from a result set
////////////////////////////////////////////////////////////////////////////////

void RestVocbaseBaseHandler::generateDocument (SingleCollectionReadOnlyTransaction<RestTransactionContext>& trx,
                                               TRI_voc_cid_t cid,
                                               TRI_doc_mptr_copy_t const& mptr,
                                               TRI_shaper_t* shaper,
                                               bool generateBody) {

  CollectionNameResolver const* resolver = trx.resolver();

  char const* key = TRI_EXTRACT_MARKER_KEY(&mptr);  // PROTECTED by trx from above
  string const&& id = DocumentHelper::assembleDocumentId(resolver->getCollectionName(cid), key);

  TRI_json_t augmented;
  TRI_InitArray2Json(TRI_UNKNOWN_MEM_ZONE, &augmented, 5);

  TRI_json_t* idJson = TRI_CreateString2CopyJson(TRI_UNKNOWN_MEM_ZONE, id.c_str(), id.size());

  if (idJson != nullptr) {
    TRI_Insert2ArrayJson(TRI_UNKNOWN_MEM_ZONE, &augmented, TRI_VOC_ATTRIBUTE_ID, idJson);
  }

  // convert rid from uint64_t to string
  string const&& rid = StringUtils::itoa(mptr._rid);
  TRI_json_t* rev = TRI_CreateString2CopyJson(TRI_UNKNOWN_MEM_ZONE, rid.c_str(), rid.size());

  if (rev != nullptr) {
    TRI_Insert2ArrayJson(TRI_UNKNOWN_MEM_ZONE, &augmented, TRI_VOC_ATTRIBUTE_REV, rev);
  }

  TRI_json_t* keyJson = TRI_CreateString2CopyJson(TRI_UNKNOWN_MEM_ZONE, key, strlen(key));

  if (keyJson) {
    TRI_Insert2ArrayJson(TRI_UNKNOWN_MEM_ZONE, &augmented, TRI_VOC_ATTRIBUTE_KEY, keyJson);
  }

  TRI_df_marker_type_t type = static_cast<TRI_df_marker_t const*>(mptr.getDataPtr())->_type;  // PROTECTED by trx passed from above

  if (type == TRI_DOC_MARKER_KEY_EDGE) {
    TRI_doc_edge_key_marker_t const* marker = static_cast<TRI_doc_edge_key_marker_t const*>(mptr.getDataPtr());  // PROTECTED by trx passed from above
    string const&& from = DocumentHelper::assembleDocumentId(resolver->getCollectionNameCluster(marker->_fromCid), string((char*) marker + marker->_offsetFromKey));
    string const&& to = DocumentHelper::assembleDocumentId(resolver->getCollectionNameCluster(marker->_toCid), string((char*) marker +  marker->_offsetToKey));

    TRI_Insert3ArrayJson(TRI_UNKNOWN_MEM_ZONE, &augmented, TRI_VOC_ATTRIBUTE_FROM, TRI_CreateString2CopyJson(TRI_UNKNOWN_MEM_ZONE, from.c_str(), from.size()));
    TRI_Insert3ArrayJson(TRI_UNKNOWN_MEM_ZONE, &augmented, TRI_VOC_ATTRIBUTE_TO, TRI_CreateString2CopyJson(TRI_UNKNOWN_MEM_ZONE, to.c_str(), to.size()));
  }
  else if (type == TRI_WAL_MARKER_EDGE) {
    triagens::wal::edge_marker_t const* marker = static_cast<triagens::wal::edge_marker_t const*>(mptr.getDataPtr());  // PROTECTED by trx passed from above
    string const&& from = DocumentHelper::assembleDocumentId(resolver->getCollectionNameCluster(marker->_fromCid), string((char*) marker + marker->_offsetFromKey));
    string const&& to = DocumentHelper::assembleDocumentId(resolver->getCollectionNameCluster(marker->_toCid), string((char*) marker +  marker->_offsetToKey));

    TRI_Insert3ArrayJson(TRI_UNKNOWN_MEM_ZONE, &augmented, TRI_VOC_ATTRIBUTE_FROM, TRI_CreateString2CopyJson(TRI_UNKNOWN_MEM_ZONE, from.c_str(), from.size()));
    TRI_Insert3ArrayJson(TRI_UNKNOWN_MEM_ZONE, &augmented, TRI_VOC_ATTRIBUTE_TO, TRI_CreateString2CopyJson(TRI_UNKNOWN_MEM_ZONE, to.c_str(), to.size()));
  }

  // add document identifier to buffer
  TRI_string_buffer_t buffer;

  // convert object to string
  TRI_InitStringBuffer(&buffer, TRI_UNKNOWN_MEM_ZONE);

  TRI_shaped_json_t shapedJson;
  TRI_EXTRACT_SHAPED_JSON_MARKER(shapedJson, mptr.getDataPtr());  // PROTECTED by trx passed from above
  TRI_StringifyAugmentedShapedJson(shaper, &buffer, &shapedJson, &augmented);

  TRI_DestroyJson(TRI_UNKNOWN_MEM_ZONE, &augmented);

  if (idJson) {
    TRI_Free(TRI_UNKNOWN_MEM_ZONE, idJson);
  }

  if (rev) {
    TRI_Free(TRI_UNKNOWN_MEM_ZONE, rev);
  }

  if (keyJson) {
    TRI_Free(TRI_UNKNOWN_MEM_ZONE, keyJson);
  }

  // and generate a response
  _response = createResponse(HttpResponse::OK);
  _response->setContentType("application/json; charset=utf-8");
  _response->setHeader("etag", 4, "\"" + rid + "\"");

  if (generateBody) {
    _response->body().appendText(TRI_BeginStringBuffer(&buffer), TRI_LengthStringBuffer(&buffer));
  }
  else {
    _response->headResponse(TRI_LengthStringBuffer(&buffer));
  }

  TRI_DestroyStringBuffer(&buffer);
}

////////////////////////////////////////////////////////////////////////////////
/// @brief generate an error message for a transaction error
////////////////////////////////////////////////////////////////////////////////

void RestVocbaseBaseHandler::generateTransactionError (string const& collectionName,
                                                       int res,
                                                       TRI_voc_key_t key,
                                                       TRI_voc_rid_t rid) {
  switch (res) {
    case TRI_ERROR_ARANGO_COLLECTION_NOT_FOUND:
      if (collectionName.empty()) {
        // no collection name specified
        generateError(HttpResponse::BAD, res, "no collection name specified");
      }
      else {
        // collection name specified but collection not found
        generateError(HttpResponse::NOT_FOUND, res, "collection '" + collectionName + "' not found");
      }
      return;

    case TRI_ERROR_ARANGO_READ_ONLY:
      generateError(HttpResponse::FORBIDDEN, res, "collection is read-only");
      return;

    case TRI_ERROR_ARANGO_UNIQUE_CONSTRAINT_VIOLATED:
      generateError(HttpResponse::CONFLICT, res, "cannot create document, unique constraint violated");
      return;

    case TRI_ERROR_ARANGO_GEO_INDEX_VIOLATED:
      generateError(HttpResponse::CONFLICT, res, "geo constraint violated");
      return;

    case TRI_ERROR_ARANGO_DOCUMENT_KEY_BAD:
      generateError(HttpResponse::BAD, res, "invalid document key");
      return;

    case TRI_ERROR_ARANGO_OUT_OF_KEYS:
      generateError(HttpResponse::SERVER_ERROR, res, "out of keys");
      return;

    case TRI_ERROR_ARANGO_DOCUMENT_KEY_UNEXPECTED:
      generateError(HttpResponse::BAD, res, "collection does not allow using user-defined keys");
      return;

    case TRI_ERROR_ARANGO_DOCUMENT_NOT_FOUND:
      generateDocumentNotFound(collectionName, key);
      return;

    case TRI_ERROR_ARANGO_DOCUMENT_TYPE_INVALID:
      generateError(HttpResponse::BAD, res);
      return;

    case TRI_ERROR_ARANGO_CONFLICT:
      generatePreconditionFailed(collectionName, key ? key : (TRI_voc_key_t) "unknown", rid);
      return;

    case TRI_ERROR_CLUSTER_SHARD_GONE:
      generateError(HttpResponse::SERVER_ERROR, res,
                    "coordinator: no responsible shard found");
      return;

    case TRI_ERROR_CLUSTER_TIMEOUT:
      generateError(HttpResponse::SERVER_ERROR, res);
      return;

    case TRI_ERROR_CLUSTER_MUST_NOT_CHANGE_SHARDING_ATTRIBUTES:
    case TRI_ERROR_CLUSTER_MUST_NOT_SPECIFY_KEY: {
      generateError(HttpResponse::BAD, res);
      return;
    }

    case TRI_ERROR_CLUSTER_UNSUPPORTED: {
      generateError(HttpResponse::NOT_IMPLEMENTED, res);
      return;
    }

    default:
      generateError(HttpResponse::SERVER_ERROR, TRI_ERROR_INTERNAL, "failed with error: " + string(TRI_errno_string(res)));
  }
}

////////////////////////////////////////////////////////////////////////////////
/// @brief extracts the revision
////////////////////////////////////////////////////////////////////////////////

TRI_voc_rid_t RestVocbaseBaseHandler::extractRevision (char const* header,
                                                       char const* parameter,
                                                       bool& isValid) {
  isValid = true;
  bool found;
  char const* etag = _request->header(header, found);

  if (found) {
    char const* s = etag;
    char const* e = etag + strlen(etag);

    while (s < e && (s[0] == ' ' || s[0] == '\t')) {
      ++s;
    }

    if (s < e && (s[0] == '"' || s[0] == '\'')) {
      ++s;
    }


    while (s < e && (e[-1] == ' ' || e[-1] == '\t')) {
      --e;
    }

    if (s < e && (e[-1] == '"' || e[-1] == '\'')) {
      --e;
    }

    TRI_voc_rid_t rid = TRI_UInt64String2(s, e - s);
    isValid = (TRI_errno() != TRI_ERROR_ILLEGAL_NUMBER);

    return rid;
  }

  if (parameter != nullptr) {
    etag = _request->value(parameter, found);

    if (found) {
      TRI_voc_rid_t rid = TRI_UInt64String(etag);
      isValid = (TRI_errno() != TRI_ERROR_ILLEGAL_NUMBER);
      return rid;
    }
  }

  return 0;
}

////////////////////////////////////////////////////////////////////////////////
/// @brief extracts the update policy
////////////////////////////////////////////////////////////////////////////////

TRI_doc_update_policy_e RestVocbaseBaseHandler::extractUpdatePolicy () const {
  bool found;
  char const* policy = _request->value("policy", found);

  if (found) {
    if (TRI_CaseEqualString(policy, "error")) {
      return TRI_DOC_UPDATE_ERROR;
    }
    else if (TRI_CaseEqualString(policy, "last")) {
      return TRI_DOC_UPDATE_LAST_WRITE;
    }
    else {
      return TRI_DOC_UPDATE_ILLEGAL;
    }
  }
  else {
    return TRI_DOC_UPDATE_ERROR;
  }
}

////////////////////////////////////////////////////////////////////////////////
/// @brief extracts the waitForSync value
////////////////////////////////////////////////////////////////////////////////

bool RestVocbaseBaseHandler::extractWaitForSync () const {
  bool found;
  char const* forceStr = _request->value("waitForSync", found);

  if (found) {
    return StringUtils::boolean(forceStr);
  }

  return false;
}

////////////////////////////////////////////////////////////////////////////////
/// @brief parses the body
////////////////////////////////////////////////////////////////////////////////

TRI_json_t* RestVocbaseBaseHandler::parseJsonBody () {
  char* errmsg = nullptr;
  TRI_json_t* json = _request->toJson(&errmsg);

  if (json == nullptr) {
    if (errmsg == nullptr) {
      generateError(HttpResponse::BAD,
                    TRI_ERROR_HTTP_CORRUPTED_JSON,
                    "cannot parse json object");
    }
    else {
      generateError(HttpResponse::BAD,
                    TRI_ERROR_HTTP_CORRUPTED_JSON,
                    errmsg);

      TRI_FreeString(TRI_CORE_MEM_ZONE, errmsg);
    }

    return nullptr;
  }

  TRI_ASSERT(errmsg == nullptr);

  if (TRI_HasDuplicateKeyJson(json)) {
    generateError(HttpResponse::BAD,
                  TRI_ERROR_HTTP_CORRUPTED_JSON,
                  "cannot parse json object");
    TRI_FreeJson(TRI_UNKNOWN_MEM_ZONE, json);
    return nullptr;
  }

  return json;
}

// -----------------------------------------------------------------------------
// --SECTION--                                                           HANDLER
// -----------------------------------------------------------------------------

// -----------------------------------------------------------------------------
// --SECTION--                                                    public methods
// -----------------------------------------------------------------------------

////////////////////////////////////////////////////////////////////////////////
/// {@inheritDoc}
////////////////////////////////////////////////////////////////////////////////

string const& RestVocbaseBaseHandler::queue () const {
  return QUEUE_NAME;
}

////////////////////////////////////////////////////////////////////////////////
/// @brief extract a string attribute from a JSON array
///
/// if the attribute is not there or not a string, this returns 0
////////////////////////////////////////////////////////////////////////////////

char const* RestVocbaseBaseHandler::extractJsonStringValue (TRI_json_t const* json,
                                                            char const* name) {
  if (! TRI_IsArrayJson(json)) {
    return nullptr;
  }

  TRI_json_t const* value = TRI_LookupArrayJson(json, name);
  if (! TRI_IsStringJson(value)) {
    return nullptr;
  }

  return value->_value._string.data;
}

////////////////////////////////////////////////////////////////////////////////
/// @brief parses a document handle
/// TODO: merge with DocumentHelper::parseDocumentId
////////////////////////////////////////////////////////////////////////////////

int RestVocbaseBaseHandler::parseDocumentId (CollectionNameResolver const* resolver,
                                             string const& handle,
                                             TRI_voc_cid_t& cid,
                                             TRI_voc_key_t& key) {
  char const* ptr = handle.c_str();
  char const* end = ptr + handle.size();

  if (end - ptr < 3) {
    // minimum length of document id is 3:
    // at least 1 byte for collection name, '/' + at least 1 byte for key
    return TRI_set_errno(TRI_ERROR_ARANGO_DOCUMENT_HANDLE_BAD);
  }

  char const* pos = static_cast<char const*>(memchr(static_cast<void const*>(ptr), TRI_DOCUMENT_HANDLE_SEPARATOR_CHR, handle.size()));

  if (pos == nullptr || pos >= end - 1) {
    // if no '/' is found, the id is invalid
    // if '/' is at the very end, the id is invalid too
    return TRI_set_errno(TRI_ERROR_ARANGO_DOCUMENT_HANDLE_BAD);
  }
  
  // check if the id contains a second '/'
  if (memchr(static_cast<void const*>(pos + 1), TRI_DOCUMENT_HANDLE_SEPARATOR_CHR, end - pos - 1) != nullptr) {
    return TRI_set_errno(TRI_ERROR_ARANGO_DOCUMENT_HANDLE_BAD);
  }

  char const first = *ptr;

  if (first >= '0' && first <= '9') {
    cid = TRI_UInt64String2(ptr, ptr - pos);
  }
  else {
    cid = resolver->getCollectionIdCluster(std::string(ptr, pos - ptr));
  }

  if (cid == 0) {
    return TRI_ERROR_ARANGO_COLLECTION_NOT_FOUND;
  }

  key = TRI_DuplicateString2Z(TRI_CORE_MEM_ZONE, pos + 1, end - pos - 1);

  return TRI_ERROR_NO_ERROR;
}

// -----------------------------------------------------------------------------
// --SECTION--                                                       END-OF-FILE
// -----------------------------------------------------------------------------

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