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nigiri.js
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nigiri.js
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'use strict';(function(r,J){function D(a){function b(b,d){return l(a,b,d)}b.asFunction=function(a){u(arguments,2);return q(arguments)};b.asConstructor=function(a){u(arguments,2);return K(arguments)};b.asValue=function(a){u(arguments,1);return w(a)};b.inject=function(b,d){u(arguments,3);var e="",f=arguments;"string"===typeof arguments[0]&&(e=b,f=Array.prototype.slice.call(f,1));var k=q(f),h=null;return function(){null===h&&(h=l(a,e,!0).inject(k));return h.apply(this,arguments)}};b.get=function(b){u(arguments,
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zone("nigiri").factory("#MyKeyRange", [ "Utils" ], function(Utils) {
"use strict"
var MyKeyRange = function(idbKeyRange) {
this.__impl = idbKeyRange;
};
MyKeyRange.bound = function(lower, upper, lowerOpen, upperOpen) {
var impl = IDBKeyRange.bound(lower, upper, lowerOpen, upperOpen);
return new MyKeyRange(impl);
};
MyKeyRange.only = function(value) {
var impl = IDBKeyRange.only(value);
return new MyKeyRange(impl);
};
MyKeyRange.lowerBound = function(bound, open) {
var impl = IDBKeyRange.lowerBound(bound, open);
return new MyKeyRange(impl);
};
MyKeyRange.upperBound = function(bound, open) {
var impl = IDBKeyRange.upperBound(bound, open);
return new MyKeyRange(impl);
};
// attributes
Utils.addConstAttribute(MyKeyRange.prototype, "lower");
Utils.addConstAttribute(MyKeyRange.prototype, "upper");
Utils.addConstAttribute(MyKeyRange.prototype, "lowerOpen");
Utils.addConstAttribute(MyKeyRange.prototype, "upperOpen");
return MyKeyRange;
});
zone("nigiri").factory("#MyObjectStore", [ "MyRequest", "MyIndex", "Utils", "cursors" ], function(MyRequest, MyIndex, Utils, cursors) {
"use strict"
var MyObjectStore = function(idbObjectStore, transaction) {
this.__impl = idbObjectStore;
this.__transaction = transaction;
};
MyObjectStore.prototype.add = function() {
var req = this.__impl.add.apply(this.__impl, arguments);
return new MyRequest(req, this, this.__transaction);
};
MyObjectStore.prototype.clear = function() {
var req = this.__impl.clear.apply(this.__impl, arguments);
return new MyRequest(req, this, this.__transaction);
};
MyObjectStore.prototype.count = function() {
return cursors.createObjectStoreCountByCursorRequest(this, arguments);
};
MyObjectStore.prototype.createIndex = function() {
var req = this.__impl.createIndex.apply(this.__impl, arguments);
return new MyIndex(req, this);
};
MyObjectStore.prototype["delete"] = function() {
return cursors.createObjectStoreDeleteByCursorRequest(this, arguments);
};
MyObjectStore.prototype.deleteIndex = function() {
this.__impl.deleteIndex.apply(this.__impl, arguments);
};
MyObjectStore.prototype.get = function() {
return cursors.createObjectStoreGetByCursorRequest(this, arguments);
};
MyObjectStore.prototype.index = function() {
var res = this.__impl.index.apply(this.__impl, arguments);
return new MyIndex(res, this);
};
MyObjectStore.prototype.openCursor = function() {
return cursors.createObjectStoreCursorRequest(this, arguments);
};
MyObjectStore.prototype.put = function(value, key) {
var req = this.__impl.put.apply(this.__impl, arguments);
return new MyRequest(req, this, this.__transaction);
};
// attributes
Utils.addConstAttribute(MyObjectStore.prototype, "indexNames");
Utils.addConstAttribute(MyObjectStore.prototype, "keyPath");
Utils.addConstAttribute(MyObjectStore.prototype, "name");
Utils.addConstProperty(MyObjectStore.prototype, "transaction");
Utils.addConstAttribute(MyObjectStore.prototype, "autoIncrement");
return MyObjectStore;
});zone("nigiri").factory("#MyRequest", [ "MyDBEventTarget", "addEventHandlerProperty", "createSuccessEvent", "createErrorEvent", "Utils" ],
function(EventTargetImpl, addEventHandlerProperty, createSuccessEvent, createErrorEvent, Utils) {
"use strict"
var isValidResult = function(result) {
return result !== null && result !== undefined;
};
var TheRequest = function(impl, source, transaction, resultWrapper) {
EventTargetImpl.call(this, impl);
this.__source = source;
this.__transaction = transaction;
this.__resultOverride = false;
this.__result = undefined;
this.__readyStateOverride = false;
this.__readyState = "pending";
this.__error = null;
this.__wrapResult = resultWrapper || Utils.IDENTITY_FUNCTION;
};
TheRequest.__invalidResult = function(req) {
return !isValidResult(req.result);
};
TheRequest.__resultValid = function(req) {
return isValidResult(req.result);
};
TheRequest.prototype = Object.create(EventTargetImpl.prototype);
TheRequest.prototype.constructor = TheRequest;
TheRequest.prototype.__notifyOnSuccess = function(result, event) {
this.__result = result;
if (this.onsuccess) {
this.onsuccess(event || createSuccessEvent(this));
return true;
}
return false;
};
TheRequest.prototype.__notifyOnError = function(error, event) {
this.__error = error;
if (this.onerror) {
this.onerror(event || createErrorEvent(this));
return true;
}
return false;
};
TheRequest.prototype.__setImpl = function(impl) {
if (this.__result || this.__readyState !== "pending" || this.__error !== null) {
throw new Error("Invalid state; cannot set implementation");
}
EventTargetImpl.prototype.__setImpl.call(this, impl);
};
Object.defineProperty(TheRequest.prototype, "transaction", {
get : function() {
return this.__transaction;
}
});
Object.defineProperty(TheRequest.prototype, "source", {
get : function() {
return this.__source;
}
});
Object.defineProperty(TheRequest.prototype, "result", {
get : function() {
if (!this.__resultOverride && !isValidResult(this.__result) && this.__impl && isValidResult(this.__impl.result)) {
return this.__wrapResult(this.__impl.result, this);
}
return this.__result;
}
});
Object.defineProperty(TheRequest.prototype, "error", {
get : function() {
if (this.__impl) {
return this.__impl.error;
}
return this.__error;
}
});
Object.defineProperty(TheRequest.prototype, "readyState", {
get : function() {
if (!this.__readyStateOverride && this.__impl) {
return this.__impl.readyState;
}
return this.__readyState;
}
});
addEventHandlerProperty(TheRequest.prototype, "onsuccess");
addEventHandlerProperty(TheRequest.prototype, "onerror");
return TheRequest;
});zone("nigiri").factory("#MyIndex", [ "Utils" ,"cursors"], function(Utils,cursors) {
"use strict"
var MyIndex = function(idbIndex, objectStore) {
this.__impl = idbIndex;
this.__objectStore = objectStore;
};
MyIndex.prototype.get = function() {
return cursors.createGetByCursorRequest(this.__impl, this, this.__objectStore.transaction, arguments);
};
MyIndex.prototype.getKey = function() {
return cursors.createGetKeyByCursorRequest(this.__impl, this, this.__objectStore.transaction, arguments);
};
MyIndex.prototype.count = function() {
return cursors.createCountByCursorRequest(this.__impl, this, this.__objectStore.transaction, arguments);
};
MyIndex.prototype.openCursor = function() {
return cursors.createCursorRequest(this.__impl, this, this.__objectStore.transaction, true, arguments);
};
MyIndex.prototype.openKeyCursor = function() {
return cursors.createCursorRequest(this.__impl, this, this.__objectStore.transaction, false, arguments);
};
// attributes
Utils.addConstAttribute(MyIndex.prototype, "name");
Utils.addConstProperty(MyIndex.prototype, "objectStore");
Utils.addConstAttribute(MyIndex.prototype, "keyPath");
Utils.addConstAttribute(MyIndex.prototype, "multiEntry");
Utils.addConstAttribute(MyIndex.prototype, "unique");
return MyIndex;
});
zone("nigiri").factory("#MyTransaction", [ "MyDBEventTarget", "MyObjectStore", "addEventHandlerProperty", "Utils" ],
function(MyDBEventTarget, MyObjectStore, addEventHandlerProperty, Utils) {
"use strict"
var MyTransaction = function(idbTransaction, db) {
MyDBEventTarget.call(this, idbTransaction);
this.__impl = idbTransaction;
this.__db = db;
};
// inheritance
MyTransaction.prototype = Object.create(MyDBEventTarget.prototype);
MyTransaction.prototype.constructor = MyTransaction;
MyTransaction.prototype.abort = function() {
this.__impl.abort.apply(this.__impl, arguments);
};
MyTransaction.prototype.objectStore = function() {
var store = this.__impl.objectStore.apply(this.__impl, arguments);
return new MyObjectStore(store, this);
};
// attributes
Utils.addConstProperty(MyTransaction.prototype, "db");
Utils.addConstAttribute(MyTransaction.prototype, "mode");
Utils.addConstAttribute(MyTransaction.prototype, "error");
addEventHandlerProperty(MyTransaction.prototype, "onabort");
addEventHandlerProperty(MyTransaction.prototype, "oncomplete");
addEventHandlerProperty(MyTransaction.prototype, "onerror");
return MyTransaction;
});
zone("nigiri").factory("#MyCursorWithValues", [ "MyCursor", "Utils" ], function(MyCursor, Utils) {
"use strict"
var MyCursorWithValues = function(idbCursor, source, transaction) {
MyCursor.call(this, idbCursor, source, transaction);
this.__impl = idbCursor;
this.__source = source;
};
MyCursorWithValues.prototype = Object.create(MyCursor.prototype);
MyCursorWithValues.prototype.constructor = MyCursorWithValues;
Utils.addConstAttribute(MyCursorWithValues.prototype, "value");
return MyCursorWithValues;
});
zone("nigiri").factory("-IndexDBProvider", [ "$indexedDB" ], function(db) {
"use strict"
return db;
});
zone("nigiri").factory("#cmp", [ "IndexDBProvider" ], function(provider) {
"use strict"
return function(a, b) {
return provider.cmp(a, b);
};
});
zone("nigiri").factory("#FACTORY", [ "MyOpenDBRequest", "IndexDBProvider", "$indexedDB" ], function(REQUEST, INDEXEDDB_PROVIDER,nativeDB) {
"use strict";
if (!INDEXEDDB_PROVIDER) {
INDEXEDDB_PROVIDER = nativeDB;
}
if (!INDEXEDDB_PROVIDER) {
throw new Error("Failed to create indexed DB");
}
var provider = function() {
this.open = function() {
var req = INDEXEDDB_PROVIDER.open.apply(INDEXEDDB_PROVIDER, arguments);
return new REQUEST(req);
};
this.deleteDatabase = function() {
var req = INDEXEDDB_PROVIDER.deleteDatabase.apply(INDEXEDDB_PROVIDER, arguments);
return new REQUEST(req);
};
this.cmp = function(a, b) {
return INDEXEDDB_PROVIDER.cmp(a, b);
};
};
return new provider();
});
zone("nigiri").factory("#MyCursor", [ "MyRequest", "Utils" ], function(MyRequest, Utils) {
"use strict"
var MyCursor = function(idbCursor, source, transaction) {
this.__impl = idbCursor;
this.__source = source;
this.__transaction = transaction;
};
MyCursor.prototype.update = function() {
var req = this.__impl.update.apply(this.__impl, arguments);
return new MyRequest(req, this, this.__transaction);
};
MyCursor.prototype.advance = function() {
this.__impl.advance.apply(this.__impl, arguments);
};
MyCursor.prototype["continue"] = function() {
this.__impl["continue"].apply(this.__impl, arguments);
};
MyCursor.prototype["delete"] = function() {
var req = this.__impl["delete"].apply(this.__impl, arguments);
return new MyRequest(req, this, this.__transaction);
};
// attributes
Utils.addConstProperty(MyCursor.prototype, "source");
Utils.addConstAttribute(MyCursor.prototype, "direction");
Utils.addConstAttribute(MyCursor.prototype, "key");
Utils.addConstAttribute(MyCursor.prototype, "primaryKey");
return MyCursor;
});
zone("nigiri").factory("#MyOpenDBRequest", [ "EventWrapper", "MyRequest", "MyTransaction", "MyDatabase", "addEventHandlerProperty" ],
function(EventWrapper, RequestBaseClass, Transaction, Database, addEventHandlerProperty) {
"use strict"
var TheEvent = function(e) {
EventWrapper.call(this, e);
};
TheEvent.prototype = Object.create(EventWrapper.prototype);
TheEvent.prototype.constructor = TheEvent;
Object.defineProperty(TheEvent.prototype, "oldVersion", {
get : function() {
return this.__getNativeImpl().oldVersion;
}
});
Object.defineProperty(TheEvent.prototype, "newVersion", {
get : function() {
return this.__getNativeImpl().newVersion;
}
});
var TheRequest = function(idbRequest) {
RequestBaseClass.call(this, idbRequest, null, null);
};
// inheritance
TheRequest.prototype = Object.create(RequestBaseClass.prototype);
TheRequest.prototype.constructor = TheRequest;
TheRequest.prototype.__wrapEvent = function(event) {
if (event instanceof IDBVersionChangeEvent) {
return new TheEvent(event);
} else {
return RequestBaseClass.prototype.__wrapEvent.call(this, event);
}
};
// attributes
Object.defineProperty(TheRequest.prototype, "transaction", {
get : function() {
if (!this.__transaction && this.result) {
this.__transaction = new Transaction(this.__impl.transaction, this.__result);
}
return this.__transaction;
}
});
Object.defineProperty(TheRequest.prototype, "result", {
get : function() {
if (!this.__result && this.__impl.result) {
this.__result = new Database(this.__impl.result);
}
return this.__result;
}
});
addEventHandlerProperty(TheRequest.prototype, "onblocked");
addEventHandlerProperty(TheRequest.prototype, "onupgradeneeded");
return TheRequest;
});
zone("nigiri").service("-cursors", [ "MyRequest", "MyCursor", "MyCursorWithValues" ], function(MyRequest, MyCursor, MyCursorWithValues) {
"use strict"
this.createCursorRequest = function(implSource, source, transaction, withValues, args) {
var req = null;
var result = null;
if (withValues || !implSource.openKeyCursor) {
req = implSource.openCursor.apply(implSource, args);
result = function(r) {
new MyCursor(r, source, transaction);
};
} else {
req = implSource.openKeyCursor.apply(implSource, args);
result = function(r) {
new MyCursorWithValues(r, source, transaction);
};
}
req = new MyRequest(req, source, transaction, result);
return req;
};
this.createCountByCursorRequest = function(implSource, source, transaction, args) {
var req = implSource.count.apply(implSource, args);
req = new MyRequest(req, source, transaction);
return req;
};
this.createDeleteByCursorRequest = function(implSource, source, transaction, args) {
var req = implSource["delete"].apply(implSource, args);
req = new MyRequest(req, source, transaction);
return req;
};
this.createGetByCursorRequest = function(implSource, source, transaction, args) {
var req = implSource.get.apply(implSource, args);
req = new MyRequest(req, source, transaction);
return req;
};
this.createGetKeyByCursorRequest = function(implSource, source, transaction, args) {
var req = implSource.getKey.apply(implSource, args);
req = new MyRequest(req, source, transaction);
return req;
};
this.createObjectStoreCursorRequest = function(source, args) {
return this.createCursorRequest(source.__impl, source, source.transaction, true, args);
};
this.createObjectStoreCountByCursorRequest = function(store, args) {
var req = store.__impl.count.apply(store.__impl, args);
req = new MyRequest(req, store, store.transaction);
return req;
};
this.createObjectStoreDeleteByCursorRequest = function(store, args) {
var req = store.__impl["delete"].apply(store.__impl, args);
req = new MyRequest(req, store, store.transaction);
return req;
};
this.createObjectStoreGetByCursorRequest = function(store, args) {
var req = store.__impl.get.apply(store.__impl, args);
req = new MyRequest(req, store, store.transaction);
return req;
};
});
zone("nigiri").factory("#MyDatabase", [ "MyDBEventTarget", "MyTransaction", "MyObjectStore", "Utils" ],
function(MyDBEventTarget, MyTransaction, MyObjectStore, Utils) {
"use strict"
var MyDatabase = function(idbDatabase) {
MyDBEventTarget.call(this, idbDatabase, this);
};
// inheritance
MyDatabase.prototype = Object.create(MyDBEventTarget.prototype);
MyDatabase.prototype.constructor = MyDatabase;
MyDatabase.prototype.createObjectStore = function() {
var store = this.__impl.createObjectStore.apply(this.__impl, arguments);
return new MyObjectStore(store, new MyTransaction(store.transaction));
};
MyDatabase.prototype.deleteObjectStore = function() {
this.__impl.deleteObjectStore.apply(this.__impl, arguments);
};
MyDatabase.prototype.transaction = function() {
var tx = this.__impl.transaction.apply(this.__impl, arguments);
return new MyTransaction(tx, this);
};
MyDatabase.prototype.close = function() {
this.__impl.close.apply(this.__impl, arguments);
};
// attributes
Utils.addConstAttribute(MyDatabase.prototype, "name");
Utils.addConstAttribute(MyDatabase.prototype, "version");
Utils.addConstAttribute(MyDatabase.prototype, "objectStoreNames");
return MyDatabase;
});
zone("nigiri").factory("#MyEnvironment", [ "Utils" ], function(Utils) {
"use strict"
var MyEnvironment = function(idbEnvironment, indexDB) {
this.__impl = idbEnvironment;
this.__indexedDB = indexedDB;
};
// attributes
Utils.addConstProperty(MyEnvironment.prototype, "indexedDB");
return MyEnvironment;
});
zone("nigiri.extension").factory("#createMultiKeyCursorRequest", [ "Utils", "createGenericCursorRequest", "MyOptions", "nigiri.cmp" ],
function(Utils, createGenericCursorRequest, MyOptions, compareKeys) {
"use strict"
var createState = function(multikey, direction) {
var state = {
key : multikey
};
if (direction === 'prev' || direction === 'prevunique') {
state.next = function(key) {
return multikey.floor(key);
};
} else {
state.next = function(key) {
return multikey.ceiling(key);
};
}
return state;
};
var syncWithMultiKey = function(cursor, state) {
var actualKey, expectedKey;
actualKey = cursor.key;
// check if we need to emit this key
if (state.key.contains(actualKey)) {
return true;
}
// get the expected key
expectedKey = state.next(actualKey);
if (expectedKey !== undefined) {
cursor["continue"]( expectedKey );
}
return false;
};
return function(impl, source, transaction, multikey, opts) {
var options = new MyOptions(opts).getOptions();
options.iterationState = createState(multikey, opts.direction);
options.sync = syncWithMultiKey;
return createGenericCursorRequest(impl, source, transaction, new MyOptions(options));
};
});zone("nigiri.extension").factory("-getKeyRange", [ "MyKeyRange", "MyRequest" ], function(KeyRange, TheRequest) {
"use strict"
var getKeyRange = function(loReq, hiReq, transaction) {
var request = new TheRequest(null, loReq.source, transaction);
var range = {};
var notifyOnSuccess = function(e) {
if (range && range.hasOwnProperty("lo") && range.hasOwnProperty("hi")) {
request.__notifyOnSuccess(KeyRange.bound(range.lo, range.hi), e);
}
};
loReq.onsuccess = function(e) {
if (TheRequest.__invalidResult(loReq)) {
request.__notifyOnSuccess(null, e);
} else {
range.lo = loReq.result.key;
notifyOnSuccess(e);
}
};
hiReq.onsuccess = function(e) {
if (TheRequest.__invalidResult(hiReq)) {
request.__notifyOnSuccess(null, e);
} else {
range.hi = hiReq.result.key;
notifyOnSuccess(e);
}
};
loReq.onerror = function(e) {
// ensure that only one notification goes out
if (range) {
range = null;
request.__notifyOnError(loReq.error);
}
};
hiReq.onerror = function(e) {
if (range) {
range = null;
request.__notifyOnError(hiReq.error);
}
};
request.__setOwnerOf(hiReq);
request.__setOwnerOf(loReq);
return request;
};
return getKeyRange;
});
zone("nigiri.extension").interceptor("nigiri.MyObjectStore", [ "getKeyRange" ], function(getKeyRange) {
return function(ObjectStore) {
ObjectStore().prototype.getKeyRange = function() {
var loReq = this.openCursor(null, "next");
var hiReq = this.openCursor(null, "prev");
return getKeyRange(loReq, hiReq, this.transaction);
};
return ObjectStore();
};
});
zone("nigiri.extension").interceptor("nigiri.MyIndex", [ "getKeyRange" ], function(getKeyRange) {
return function(Index) {
Index().prototype.getKeyRange = function() {
var loReq = this.openCursor(null, "next");
var hiReq = this.openCursor(null, "prev");
return getKeyRange(loReq, hiReq, this.__objectStore.transaction);
};
return Index();
};
});
zone("nigiri.extension").factory("-addPutAll", [ "$console", "MyRequest" ], function(console, TheRequest) {
"use strict"
var addPutAll = function(store, method, xarray) {
var array = [ null ];
if (xarray.length === 2) {
array.push(xarray[1]);
}
var objectGenerator = xarray[0];
if (typeof objectGenerator !== 'function') {
objectGenerator = (function(objects) {
var i = 0;
return function() {
if (i < objects.length) {
return objects[i++];
}
return null;
};
})(xarray[0]);
}
var request = new TheRequest(null, store, store.transaction);
var i, n, addRequest;
var nOutstanding = 0;
var result = {
total : 0,
successes : 0,
errors : 0
};
var notifyWhenDone = function() {
if (--nOutstanding === 0) {
request.__notifyOnSuccess(result);
}
if (nOutstanding < 0) {
throw new Error("Internal error; mismatched calls");
}
};
var onsuccess = function(e) {
++result.successes;
notifyWhenDone();
};
var onerror = function(e) {
// if the user provides an error handler for a batch request,
// we need to invoke it to all the user to cancel the transaction
// if will be aborted, then we return immediately
if (request.__notifyOnError("Update failed", e)) {
if (!e.defaultPrevented) {
// drop out at this point
return;
}
}
e.preventDefault();
e.stopPropagation();
++result.errors;
notifyWhenDone();
};
// TODO: we may want to be even more special here and do things in batches
var updateFN = store[method];
var object;
while ((object = objectGenerator()) !== null) {
array[0] = object;
try {
addRequest = updateFN.apply(store, array);
++nOutstanding;
addRequest.onsuccess = onsuccess;
addRequest.onerror = onerror;
} catch (error) {
console.log(error.stack);
// the the request for now
++result.errors;
throw request;
}
}
result.total = nOutstanding;
return request;
};
return addPutAll;
});
zone("nigiri.extension").interceptor("nigiri.MyObjectStore", [ "addPutAll" ], function(addPutAll) {
return function(ObjectStore) {
ObjectStore().prototype.addAll = function() {
return addPutAll(this, "add", arguments);
};
ObjectStore().prototype.putAll = function() {
return addPutAll(this, "put", arguments);
};
return ObjectStore();
};
});
zone("nigiri.extension").factory("#getByCursor", [ "MyRequest" ], function(TheRequest) {
"use strict"
return function(cursorRequest) {
var request = new TheRequest(null, cursorRequest.source, cursorRequest.transaction);
cursorRequest.onsuccess = function(e) {
if (TheRequest.__resultValid(cursorRequest)) {
request.__notifyOnSuccess(cursorRequest.result.value, e);
} else {
request.__notifyOnSuccess(undefined, e);
}
};
cursorRequest.onerror = function(e) {
request.__notifyOnError(cursorRequest.error, e);
};
request.__setOwnerOf(cursorRequest);
return request;
};
});
zone("nigiri.extension")
.factory(
"#createGenericCursorRequest",
[ "MyRequest", "MyDBEventTarget", "MyCursor", "MyOptions", "Utils", "nigiri.cmp" ],
function(MyRequest, MyDBEventTarget, MyCursor, MyOptions, Utils, compare) {
"use strict"
var isExcludedKey = function(keys, key) {
return keys !== null && Utils.findByBinarySearch(keys, compare, 0, key) >= 0;
};
var isIncludedKey = function(keys, key) {
return keys === null || Utils.findByBinarySearch(keys, compare, 0, key) >= 0;
};
var createUniqueFilter = function(request, filter) {
var keys = {};
return function(cursor) {
if (keys[cursor.primaryKey] === true) {
return false;
}
keys[cursor.primaryKey] = true;
return filter(cursor);
};
};
var createKeyFilter = function(request, filter) {
return function(cursor) {
// check that the key and primary keys are not excluded
if (isExcludedKey(request.__excludedKeys, cursor.key)) {
return false;
}
if (isExcludedKey(request.__excludedPrimaryKeys, cursor.primaryKey)) {
return false;
}
if (!isIncludedKey(request.__includedKeys, cursor.key)) {
return false;
}
if (!isIncludedKey(request.__includedPrimaryKeys, cursor.primaryKey)) {
return false;
}
return filter(cursor);
};
};
/**
* This function creates an iterator. We need to pass the original request, because the event object
* may point at the wrong request object when chaining requests:
*
* <pre>
*
* OuterCursor
* -> InnerCursor
* -> NativeCursor
* </pre>
*
* When the native cursor invokes the callback, the inner cursor will receive it, but but the owner
* of the native cursor is really the outer cursor; this means, we won't be able to access the state
* variable.
*/
var createIterator = function(request, callback) {
return function(e) {
var state = request.__iterationState;
var cursor = request.result;
if (!MyRequest.__resultValid(request)) {
callback(e);
return;
}
if (!cursor.__impl) {
throw new Error("Cursor is not defined");
}
// if we've reached the end of the iteration then we just bail out
if (state.__limit === 0 || request.__terminate(cursor)) {
request.__readyState = "done";
request.__result = null;
// need to override the result
request.__resultOverride = request.__readyStateOverride = true;
callback(e);
return;
}
// try to sync up the cursor such that the current
// is a key to be returned by the cursor
if (!request.__sync(cursor.__impl, state.__callerState)) {
// it is expected that the cursor has finished
return;
}
// the cursor was successfully sync'ed to an element
if (!request.__filter(cursor)) {
cursor.__impl.advance(1);
} else if (state.__skip > 0) {
--state.__skip;
// move the source cursor forward
cursor.__impl.advance(1);
} else {
if (state.__limit > 0) {
--state.__limit;
}
// invoke the real callback and leave it up the client to call continue or advance
callback(e);
}
};
};
/**
* The cursor class.
*/
var TheCursor = function(cursor, source, transaction) {
MyCursor.call(this, cursor, source, transaction);
this.__state = null;
};
TheCursor.prototype = Object.create(MyCursor.prototype);
TheCursor.prototype.constructor = TheCursor;
TheCursor.prototype["continue"] = function() {
this.__impl["continue"].apply(this.__impl, arguments);
if (this.__state !== null) {
this.__state.__skip = 0;
}
};
TheCursor.prototype.advance = function(count) {
if (this.__state !== null) {
this.__impl.advance(1);
this.__state.__skip = count - 1;
} else {
this.__impl.advance(count);
}
};
/**
* The cursor class.
*/
var TheCursorWithValues = function(cursor, source, transaction) {
TheCursor.call(this, cursor, source, transaction);
};
TheCursorWithValues.prototype = Object.create(TheCursor.prototype);
TheCursorWithValues.prototype.constructor = TheCursorWithValues;
Object.defineProperty(TheCursorWithValues.prototype, "value", {
get : function() {
return this.__impl ? this.__impl.value : undefined;
}
});
/**
* The Request class. The purpose of the sync function is to synchronize a cursor with the current
* iteration state.
*
* @param idbRequest
* the request to be wrapped
* @param source
* the source object for the new request
* @param transaction
* the transaction associated with the request
* @param syncFN
* a synchronization function (takes a cursor and an iteration state)
* @param initialIterationState
* the initial iteration state
*/
var TheRequest = function(idbRequest, source, transaction, options) {
if (!source) {
throw new Error("No source specified");
}
if (!transaction) {
throw new Error("No transaction specified");
}
var self = this;
MyRequest.call(self, idbRequest, source, transaction, function(r) {
return self.__createCursor(r, source, transaction);
});
this.__cursorWithValues = options.withValues || false;
this.__sync = options.sync || Utils.TRUE_FUNCTION;
this.__excludedKeys = options.excludedKeys || null;
this.__excludedPrimaryKeys = options.excludedPrimaryKeys || null;
this.__includedKeys = options.includedKeys || null;
this.__includedPrimaryKeys = options.includedPrimaryKeys || null;
this.__unique = options.unique || false;
this.__terminate = options.terminate || Utils.FALSE_FUNCTION;