Struct xpcom::interfaces::mozIStorageBaseStatement [] [src]

#[repr(C)]
pub struct mozIStorageBaseStatement { /* fields omitted */ }

interface mozIStorageBaseStatement : mozIStorageBindingParams

/**
 * The base interface for both pure asynchronous storage statements
 * (mozIStorageAsyncStatement) and 'classic' storage statements
 * (mozIStorageStatement) that can be used for both synchronous and asynchronous
 * purposes.
 */

Methods

impl mozIStorageBaseStatement
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Cast this mozIStorageBaseStatement to one of its base interfaces.

impl mozIStorageBaseStatement
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MOZ_STORAGE_STATEMENT_INVALID: i64 = 0
/**
   * The statement is not usable, either because it failed to initialize or
   * was explicitly finalized.
   */

MOZ_STORAGE_STATEMENT_READY: i64 = 1
/**
   * The statement is usable.
   */

MOZ_STORAGE_STATEMENT_EXECUTING: i64 = 2
/**
   * Indicates that the statement is executing and the row getters may be used.
   *
   * @note This is only relevant for mozIStorageStatement instances being used
   *       in a synchronous fashion.
   */

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/**
   * Finalizes a statement so you can successfully close a database connection.
   * Once a statement has been finalized it can no longer be used for any
   * purpose.
   *
   * Statements are implicitly finalized when their reference counts hits zero.
   * If you are a native (C++) caller this is accomplished by setting all of
   * your nsCOMPtr instances to be NULL.  If you are operating from JavaScript
   * code then you cannot rely on this behavior because of the involvement of
   * garbage collection.
   *
   * When finalizing an asynchronous statement you do not need to worry about
   * whether the statement has actually been executed by the asynchronous
   * thread; you just need to call finalize after your last call to executeAsync
   * involving the statement.  However, you do need to use asyncClose instead of
   * close on the connection if any statements have been used asynchronously.
   */

void finalize ();

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/**
   * Binds the array of parameters to the statement.  When executeAsync is
   * called, all the parameters in aParameters are bound and then executed.
   *
   * @param aParameters
   *        The array of parameters to bind to the statement upon execution.
   *
   * @note This is only works on statements being used asynchronously.
   */

void bindParameters (in mozIStorageBindingParamsArray aParameters);

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/**
   * Creates a new mozIStorageBindingParamsArray that can be used to bind
   * multiple sets of data to a statement with bindParameters.
   *
   * @return a mozIStorageBindingParamsArray that multiple sets of parameters
   *         can be bound to.
   *
   * @note This is only useful for statements being used asynchronously.
   */

mozIStorageBindingParamsArray newBindingParamsArray ();

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/**
   * Execute a query asynchronously using any currently bound parameters.  This
   * statement can be reused immediately, and reset does not need to be called.
   *
   * @note If you have any custom defined functions, they must be re-entrant
   *       since they can be called on multiple threads.
   *
   * @param aCallback [optional]
   *        The callback object that will be notified of progress, errors, and
   *        completion.
   * @return an object that can be used to cancel the statements execution.
   */

mozIStoragePendingStatement executeAsync ([optional] in mozIStorageStatementCallback aCallback);

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/**
   * Find out whether the statement is usable (has not been finalized).
   */

readonly attribute long state;

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/**
   * Escape a string for SQL LIKE search.
   *
   * @note Consumers will have to use same escape char when doing statements
   *       such as:   ...LIKE '?1' ESCAPE '/'...
   *
   * @param aValue
   *        The string to escape for SQL LIKE.
   * @param aEscapeChar
   *        The escape character.
   * @return an AString of an escaped version of aValue
   *         (%, _ and the escape char are escaped with the escape char)
   *         For example, we will convert "foo/bar_baz%20cheese"
   *         into "foo//bar/_baz/%20cheese" (if the escape char is '/').
   */

AString escapeStringForLIKE (in AString aValue, in wchar aEscapeChar);

Methods from Deref<Target = mozIStorageBindingParams>

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Cast this mozIStorageBindingParams to one of its base interfaces.

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/**
   * Binds aValue to the parameter with the name aName.
   *
   * @param aName
   *        The name of the parameter to bind aValue to.
   * @param aValue
   *        The value to bind.
   */

void bindByName (in AUTF8String aName, in nsIVariant aValue);

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[noscript] void bindUTF8StringByName (in AUTF8String aName, in AUTF8String aValue);

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[noscript] void bindStringByName (in AUTF8String aName, in AString aValue);

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[noscript] void bindDoubleByName (in AUTF8String aName, in double aValue);

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[noscript] void bindInt32ByName (in AUTF8String aName, in long aValue);

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[noscript] void bindInt64ByName (in AUTF8String aName, in long long aValue);

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[noscript] void bindNullByName (in AUTF8String aName);

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void bindBlobByName (in AUTF8String aName, [array, size_is (aValueSize), const] in octet aValue, in unsigned long aValueSize);

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void bindStringAsBlobByName (in AUTF8String aName, in AString aValue);

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void bindUTF8StringAsBlobByName (in AUTF8String aName, in AUTF8String aValue);

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[noscript] void bindAdoptedBlobByName (in AUTF8String aName, [array, size_is (aValueSize)] in octet aValue, in unsigned long aValueSize);

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/**
    * Binds aValue to the parameter with the index aIndex.
    *
    * @param aIndex
    *        The zero-based index of the parameter to bind aValue to.
    * @param aValue
    *        The value to bind.
    */

void bindByIndex (in unsigned long aIndex, in nsIVariant aValue);

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[noscript] void bindUTF8StringByIndex (in unsigned long aIndex, in AUTF8String aValue);

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[noscript] void bindStringByIndex (in unsigned long aIndex, in AString aValue);

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[noscript] void bindDoubleByIndex (in unsigned long aIndex, in double aValue);

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[noscript] void bindInt32ByIndex (in unsigned long aIndex, in long aValue);

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[noscript] void bindInt64ByIndex (in unsigned long aIndex, in long long aValue);

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[noscript] void bindNullByIndex (in unsigned long aIndex);

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void bindBlobByIndex (in unsigned long aIndex, [array, size_is (aValueSize), const] in octet aValue, in unsigned long aValueSize);

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void bindStringAsBlobByIndex (in unsigned long aIndex, in AString aValue);

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void bindUTF8StringAsBlobByIndex (in unsigned long aIndex, in AUTF8String aValue);

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[noscript] void bindAdoptedBlobByIndex (in unsigned long aIndex, [array, size_is (aValueSize)] in octet aValue, in unsigned long aValueSize);

Trait Implementations

impl XpCom for mozIStorageBaseStatement
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IID: nsIID = nsID(382363562, 4901, 17378, [170, 199, 133, 154, 253, 21, 144, 178])

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Perform a QueryInterface call on this object, attempting to dynamically cast it to the requested interface type. Returns Some(RefPtr) if the cast succeeded, and None otherwise. Read more

impl RefCounted for mozIStorageBaseStatement
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Increment the reference count.

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Decrement the reference count, potentially freeing backing memory.

impl Deref for mozIStorageBaseStatement
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The resulting type after dereferencing.

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Dereferences the value.