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Support for lower-level queries on indexedDB

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superfeedr has done a nice job with this backbone -> indexedDB adapter,
but their query interface is somewhat limited. This commit adds an
alternate interface that lets us specify the index and cursor bounds we
want. This interface requires deeper knowledge of indexedDB indices, but
is more powerful overall.
This commit is contained in:
lilia 2014-12-18 18:28:42 -08:00
parent 8c93101989
commit 14c53ff710
2 changed files with 38 additions and 0 deletions
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19
components/indexeddb-backbonejs-adapter/backbone-indexeddb.js
View file

@ -419,6 +419,25 @@
}
}
});
} else if (options.index) {
index = store.index(options.index.name);
if (index) {
if (options.index.lower && options.index.upper) {
bounds = IDBKeyRange.bound(options.index.lower, options.index.upper);
} else if (options.index.lower) {
bounds = IDBKeyRange.lowerBound(options.index.lower);
} else if (options.index.upper) {
bounds = IDBKeyRange.upperBound(options.index.upper);
} else if (options.index.only) {
bounds = IDBKeyRange.only(options.index.only);
}
if (typeof options.index.order === 'string' && options.index.order.toLowerCase() === 'desc') {
readCursor = index.openCursor(bounds, window.IDBCursor.PREV || "prev");
} else {
readCursor = index.openCursor(bounds, window.IDBCursor.NEXT || "next");
}
}
} else {
// No conditions, use the index
if (options.range) {

19
js/components.js
View file

@ -21777,6 +21777,25 @@ return jQuery;
}
}
});
} else if (options.index) {
index = store.index(options.index.name);
if (index) {
if (options.index.lower && options.index.upper) {
bounds = IDBKeyRange.bound(options.index.lower, options.index.upper);
} else if (options.index.lower) {
bounds = IDBKeyRange.lowerBound(options.index.lower);
} else if (options.index.upper) {
bounds = IDBKeyRange.upperBound(options.index.upper);
} else if (options.index.only) {
bounds = IDBKeyRange.only(options.index.only);
}
if (typeof options.index.order === 'string' && options.index.order.toLowerCase() === 'desc') {
readCursor = index.openCursor(bounds, window.IDBCursor.PREV || "prev");
} else {
readCursor = index.openCursor(bounds, window.IDBCursor.NEXT || "next");
}
}
} else {
// No conditions, use the index
if (options.range) {