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Sketch out IDBCursor.close()
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‎index.bs

Lines changed: 56 additions & 16 deletions
Original file line numberDiff line numberDiff line change
@@ -4324,6 +4324,7 @@ interface IDBCursor {
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void advance([EnforceRange] unsigned long count);
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void continue(optional any key);
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void continuePrimaryKey(any key, any primaryKey);
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void close();
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[NewObject] IDBRequest update(any value);
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[NewObject] IDBRequest delete();
@@ -4367,7 +4368,8 @@ enum IDBCursorDirection {
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The <dfn attribute for=IDBCursor>source</dfn> attribute's getter must
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return **this**'s [=cursor/source=]. This
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attribute never returns null or throws an exception, even if the
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cursor is currently being iterated, has iterated past its end, or its
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cursor is currently being iterated, has iterated past its end,
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{{IDBCursor/close()}} has been called, or its
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[=/transaction=] is not [=transaction/active=].
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The <dfn attribute for=IDBCursor>direction</dfn> attribute's getter
@@ -4437,6 +4439,10 @@ return **this**'s [=cursor/request=].
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Advances the cursor to the next [=object-store/record=] in range matching
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or after |key| and |primaryKey|. Throws an "{{InvalidAccessError}}" {{DOMException}}
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if the [=cursor/source=] is not an [=/index=].
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: |cursor| . {{IDBCursor/close()|close}}()
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::
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Signals that the cursor is no longer needed, and that any associated resources can be released.
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</dl>
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</div>
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@@ -4457,9 +4463,9 @@ invoked, must run these steps:
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1. If **this**'s [=cursor/source=] or [=effective object
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store=] has been deleted, [=throw=] an "{{InvalidStateError}}" {{DOMException}}.
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1. If **this**'s [=cursor/got value flag=] is false, indicating that
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the cursor is being iterated or has iterated past its end,
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[=throw=] an "{{InvalidStateError}}" {{DOMException}}.
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1. If **this**'s [=cursor/got value flag=] is false
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(indicating that the cursor is being iterated, has iterated past its end, or that {{IDBCursor/close()}} was called),
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then [=throw=] an "{{InvalidStateError}}" {{DOMException}}.
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1. Set **this**'s [=cursor/got value flag=] to false.
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@@ -4499,9 +4505,9 @@ invoked, must run these steps:
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[=effective object store=] has been deleted, [=throw=] an
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"{{InvalidStateError}}" {{DOMException}}.
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1. If **this**'s [=cursor/got value flag=] is false, indicating that
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the cursor is being iterated or has iterated past its end,
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[=throw=] an "{{InvalidStateError}}" {{DOMException}}.
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1. If **this**'s [=cursor/got value flag=] is false
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(indicating that the cursor is being iterated, has iterated past its end, or that {{IDBCursor/close()}} was called),
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then [=throw=] an "{{InvalidStateError}}" {{DOMException}}.
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1. If |key| is given, then:
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@@ -4564,9 +4570,9 @@ The <dfn method for=IDBCursor>continuePrimaryKey(|key|,
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1. If **this**'s [=cursor/direction=] is not {{"next"}} or {{"prev"}},
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[=throw=] an "{{InvalidAccessError}}" {{DOMException}}.
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1. If **this**'s [=cursor/got value flag=] is false, indicating that
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the cursor is being iterated or has iterated past its end,
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[=throw=] an "{{InvalidStateError}}" {{DOMException}}.
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1. If **this**'s [=cursor/got value flag=] is false
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(indicating that the cursor is being iterated, has iterated past its end, or that {{IDBCursor/close()}} was called),
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then [=throw=] an "{{InvalidStateError}}" {{DOMException}}.
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1. Let |r| be the result of running [=convert a value to
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a key=] with |key|. Rethrow any exceptions.
@@ -4625,6 +4631,39 @@ The <dfn method for=IDBCursor>continuePrimaryKey(|key|,
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flag=] has been set to false.
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</aside>
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<div class=algorithm>
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The <dfn method for=IDBCursor>close()</dfn> method, when invoked, must run these steps:
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1. Let |transaction| be **this**'s [=cursor/transaction=].
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1. If |transaction|'s [=transaction/state=] is not [=transaction/active=], then [=throw=] a "{{TransactionInactiveError}}" {{DOMException}}.
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1. If **this**'s [=cursor/source=] or [=effective object store=] has been deleted, then [=throw=] an "{{InvalidStateError}}" {{DOMException}}.
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1. If **this**'s [=cursor/got value flag=] is false
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(indicating that the cursor is being iterated, has iterated past its end, or that {{IDBCursor/close()}} was called),
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then [=throw=] an "{{InvalidStateError}}" {{DOMException}}.
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1. Set **this**'s [=cursor/got value flag=] to false.
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1. Set **this**'s [=cursor/key=] to undefined.
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1. If **this**'s [=cursor/source=] is an [=/index=], then set **this**'s [=object store position=] to undefined.
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1. If **this**'s [=cursor/key only flag=] is false, then set **this**'s [=cursor/value=] to undefined.
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</div>
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<aside class=note>
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The {{IDBCursor/close()}} method allows web applications to hint to the user agent that the cursor will no longer be iterated, and that any state associated with the cursor can be discarded.
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</aside>
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<aside class=advisement>
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&#x1F6A7;
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The {{IDBCursor/close()}} method is new in this edition.
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&#x1F6A7;
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</aside>
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<div class=note>
@@ -4671,9 +4710,9 @@ invoked, must run these steps:
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1. If **this**'s [=cursor/source=] or [=effective object
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store=] has been deleted, [=throw=] an "{{InvalidStateError}}" {{DOMException}}.
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1. If **this**'s [=cursor/got value flag=] is false, indicating that
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the cursor is being iterated or has iterated past its end,
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[=throw=] an "{{InvalidStateError}}" {{DOMException}}.
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1. If **this**'s [=cursor/got value flag=] is false
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(indicating that the cursor is being iterated, has iterated past its end, or that {{IDBCursor/close()}} was called),
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then [=throw=] an "{{InvalidStateError}}" {{DOMException}}.
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1. If **this**'s [=cursor/key only flag=] is true, [=throw=] an
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"{{InvalidStateError}}" {{DOMException}}.
@@ -4737,9 +4776,9 @@ must run these steps:
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1. If **this**'s [=cursor/source=] or [=effective object
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store=] has been deleted, [=throw=] an "{{InvalidStateError}}" {{DOMException}}.
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1. If **this**'s [=cursor/got value flag=] is false, indicating that
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the cursor is being iterated or has iterated past its end,
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[=throw=] an "{{InvalidStateError}}" {{DOMException}}.
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1. If **this**'s [=cursor/got value flag=] is false
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(indicating that the cursor is being iterated, has iterated past its end, or that {{IDBCursor/close()}} was called),
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then [=throw=] an "{{InvalidStateError}}" {{DOMException}}.
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1. If **this**'s [=cursor/key only flag=] is true, [=throw=] an
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"{{InvalidStateError}}" {{DOMException}}.
@@ -6815,6 +6854,7 @@ For the revision history of the second edition, see [that document's Revision Hi
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* Removed handling for nonstandard `lastModifiedDate` property of {{File}} objects. ([Issue #215](https://github.com/w3c/IndexedDB/issues/215))
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* Remove escaping {{IDBKeyRange/includes()}} method. ([Issue #294](https://github.com/w3c/IndexedDB/issues/294))
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* Restrict array keys to [=/Array exotic objects=] (i.e. disallow proxies). ([Issue #309](https://github.com/w3c/IndexedDB/issues/309])
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* Added {{IDBCursor/close()}} method for {{IDBCursor}}. ([Issue #185](https://github.com/w3c/IndexedDB/issues/185))
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<!-- ============================================================ -->
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# Acknowledgements # {#acknowledgements}

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