DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Implementation

Mercurial (31ec81b5d7bb)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_dom_indexeddb_idbkeyrange_h__
#define mozilla_dom_indexeddb_idbkeyrange_h__

#include "mozilla/dom/indexedDB/IndexedDatabase.h"
#include "mozilla/dom/indexedDB/Key.h"

#include "nsISupports.h"

#include "mozilla/ErrorResult.h"
#include "nsCycleCollectionParticipant.h"

class mozIStorageStatement;

namespace mozilla {
namespace dom {
class GlobalObject;
} // namespace dom
} // namespace mozilla

BEGIN_INDEXEDDB_NAMESPACE

namespace ipc {
class KeyRange;
} // namespace ipc

class IDBKeyRange MOZ_FINAL : public nsISupports
{
public:
  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(IDBKeyRange)

  static nsresult FromJSVal(JSContext* aCx,
                            const jsval& aVal,
                            IDBKeyRange** aKeyRange);

  template <class T>
  static already_AddRefed<IDBKeyRange>
  FromSerializedKeyRange(const T& aKeyRange);

  const Key& Lower() const
  {
    return mLower;
  }

  Key& Lower()
  {
    return mLower;
  }

  const Key& Upper() const
  {
    return mIsOnly ? mLower : mUpper;
  }

  Key& Upper()
  {
    return mIsOnly ? mLower : mUpper;
  }

  // TODO: Remove these in favour of LowerOpen() / UpperOpen(), bug 900578.
  bool IsLowerOpen() const
  {
    return mLowerOpen;
  }

  bool IsUpperOpen() const
  {
    return mUpperOpen;
  }

  bool IsOnly() const
  {
    return mIsOnly;
  }

  void GetBindingClause(const nsACString& aKeyColumnName,
                        nsACString& _retval) const
  {
    NS_NAMED_LITERAL_CSTRING(andStr, " AND ");
    NS_NAMED_LITERAL_CSTRING(spacecolon, " :");
    NS_NAMED_LITERAL_CSTRING(lowerKey, "lower_key");

    if (IsOnly()) {
      // Both keys are set and they're equal.
      _retval = andStr + aKeyColumnName + NS_LITERAL_CSTRING(" =") +
                spacecolon + lowerKey;
    }
    else {
      nsAutoCString clause;

      if (!Lower().IsUnset()) {
        // Lower key is set.
        clause.Append(andStr + aKeyColumnName);
        clause.AppendLiteral(" >");
        if (!IsLowerOpen()) {
          clause.AppendLiteral("=");
        }
        clause.Append(spacecolon + lowerKey);
      }

      if (!Upper().IsUnset()) {
        // Upper key is set.
        clause.Append(andStr + aKeyColumnName);
        clause.AppendLiteral(" <");
        if (!IsUpperOpen()) {
          clause.AppendLiteral("=");
        }
        clause.Append(spacecolon + NS_LITERAL_CSTRING("upper_key"));
      }

      _retval = clause;
    }
  }

  nsresult BindToStatement(mozIStorageStatement* aStatement) const
  {
    NS_NAMED_LITERAL_CSTRING(lowerKey, "lower_key");

    if (IsOnly()) {
      return Lower().BindToStatement(aStatement, lowerKey);
    }

    nsresult rv;

    if (!Lower().IsUnset()) {
      rv = Lower().BindToStatement(aStatement, lowerKey);
      NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
    }

    if (!Upper().IsUnset()) {
      rv = Upper().BindToStatement(aStatement, NS_LITERAL_CSTRING("upper_key"));
      NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
    }

    return NS_OK;
  }

  template <class T>
  void ToSerializedKeyRange(T& aKeyRange);

  void DropJSObjects();

  // WebIDL
  JSObject*
  WrapObject(JSContext* aCx, JS::Handle<JSObject*> aScope);

  nsISupports*
  GetParentObject() const
  {
    return mGlobal;
  }

  JS::Value
  GetLower(JSContext* aCx, ErrorResult& aRv);

  JS::Value
  GetUpper(JSContext* aCx, ErrorResult& aRv);

  bool
  LowerOpen() const
  {
    return mLowerOpen;
  }

  bool
  UpperOpen() const
  {
    return mUpperOpen;
  }

  static already_AddRefed<IDBKeyRange>
  Only(const GlobalObject& aGlobal, JSContext* aCx,
       JS::Handle<JS::Value> aValue, ErrorResult& aRv);

  static already_AddRefed<IDBKeyRange>
  LowerBound(const GlobalObject& aGlobal, JSContext* aCx,
             JS::Handle<JS::Value> aValue, bool aOpen, ErrorResult& aRv);

  static already_AddRefed<IDBKeyRange>
  UpperBound(const GlobalObject& aGlobal, JSContext* aCx,
             JS::Handle<JS::Value> aValue, bool aOpen, ErrorResult& aRv);

  static already_AddRefed<IDBKeyRange>
  Bound(const GlobalObject& aGlobal, JSContext* aCx,
        JS::Handle<JS::Value> aLower, JS::Handle<JS::Value> aUpper,
        bool aLowerOpen, bool aUpperOpen, ErrorResult& aRv);

private:
  IDBKeyRange(nsISupports* aGlobal,
              bool aLowerOpen,
              bool aUpperOpen,
              bool aIsOnly)
  : mGlobal(aGlobal), mCachedLowerVal(JSVAL_VOID), mCachedUpperVal(JSVAL_VOID),
    mLowerOpen(aLowerOpen), mUpperOpen(aUpperOpen), mIsOnly(aIsOnly),
    mHaveCachedLowerVal(false), mHaveCachedUpperVal(false), mRooted(false)
  { }

  ~IDBKeyRange();

  nsCOMPtr<nsISupports> mGlobal;
  Key mLower;
  Key mUpper;
  JS::Heap<JS::Value> mCachedLowerVal;
  JS::Heap<JS::Value> mCachedUpperVal;
  const bool mLowerOpen;
  const bool mUpperOpen;
  const bool mIsOnly;
  bool mHaveCachedLowerVal;
  bool mHaveCachedUpperVal;
  bool mRooted;
};

END_INDEXEDDB_NAMESPACE

#endif // mozilla_dom_indexeddb_idbkeyrange_h__