Struct xpcom::interfaces::mozIStorageConnection
[−]
[src]
#[repr(C)]pub struct mozIStorageConnection { /* fields omitted */ }
interface mozIStorageConnection : mozIStorageAsyncConnection
/**
* mozIStorageConnection represents a database connection attached to
* a specific file or to the in-memory data storage. It is the
* primary interface for interacting with a database, including
* creating prepared statements, executing SQL, and examining database
* errors.
*
* @note From the main thread, you should rather use mozIStorageAsyncConnection.
*
* @threadsafe
*/
Methods
impl mozIStorageConnection
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pub fn coerce<T: mozIStorageConnectionCoerce>(&self) -> &T
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Cast this mozIStorageConnection
to one of its base interfaces.
impl mozIStorageConnection
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pub const TRANSACTION_DEFERRED: i64
TRANSACTION_DEFERRED: i64 = 0
/**
* Begins a new transaction with the given type.
*/
pub const TRANSACTION_IMMEDIATE: i64
TRANSACTION_IMMEDIATE: i64 = 1
pub const TRANSACTION_EXCLUSIVE: i64
TRANSACTION_EXCLUSIVE: i64 = 2
pub unsafe fn Close(&self) -> nsresult
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/**
* Closes a database connection. Callers must finalize all statements created
* for this connection prior to calling this method. It is illegal to use
* call this method if any asynchronous statements have been executed on this
* connection.
*
* @throws NS_ERROR_UNEXPECTED
* If any statement has been executed asynchronously on this object.
* @throws NS_ERROR_UNEXPECTED
* If is called on a thread other than the one that opened it.
*/
void close ();
pub unsafe fn Clone(
&self,
aReadOnly: bool,
_retval: *mut *const mozIStorageConnection
) -> nsresult
[src]
&self,
aReadOnly: bool,
_retval: *mut *const mozIStorageConnection
) -> nsresult
/**
* Clones a database connection and makes the clone read only if needed.
* SQL Functions and attached on-disk databases are applied to the new clone.
*
* @param aReadOnly
* If true, the returned database should be put into read-only mode.
* Defaults to false.
* @return the cloned database connection.
*
* @throws NS_ERROR_UNEXPECTED
* If this connection is a memory database.
* @note If your connection is already read-only, you will get a read-only
* clone.
* @note Due to a bug in SQLite, if you use the shared cache (openDatabase),
* you end up with the same privileges as the first connection opened
* regardless of what is specified in aReadOnly.
* @note The following pragmas are copied over to a read-only clone:
* - cache_size
* - temp_store
* The following pragmas are copied over to a writeable clone:
* - cache_size
* - temp_store
* - foreign_keys
* - journal_size_limit
* - synchronous
* - wal_autocheckpoint
* All SQL functions are copied over to read-only and writeable clones.
* Additionally, all temporary tables, triggers, and views, as well as
* any indexes on temporary tables, are copied over to writeable clones.
* For temporary tables, only the schemas are copied, not their
* contents.
*
*/
mozIStorageConnection clone ([optional] in boolean aReadOnly);
pub unsafe fn GetDefaultPageSize(
&self,
aDefaultPageSize: *mut int32_t
) -> nsresult
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&self,
aDefaultPageSize: *mut int32_t
) -> nsresult
/**
* The default size for SQLite database pages used by mozStorage for new
* databases.
*/
readonly attribute long defaultPageSize;
pub unsafe fn GetConnectionReady(&self, aConnectionReady: *mut bool) -> nsresult
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/**
* Indicates if the connection is open and ready to use. This will be false
* if the connection failed to open, or it has been closed.
*/
readonly attribute boolean connectionReady;
pub unsafe fn GetLastInsertRowID(
&self,
aLastInsertRowID: *mut int64_t
) -> nsresult
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&self,
aLastInsertRowID: *mut int64_t
) -> nsresult
/**
* lastInsertRowID returns the row ID from the last INSERT
* operation.
*/
readonly attribute long long lastInsertRowID;
pub unsafe fn GetAffectedRows(&self, aAffectedRows: *mut int32_t) -> nsresult
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/**
* affectedRows returns the number of database rows that were changed or
* inserted or deleted by last operation.
*/
readonly attribute long affectedRows;
pub unsafe fn GetLastError(&self, aLastError: *mut int32_t) -> nsresult
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/**
* The last error SQLite error code.
*/
readonly attribute long lastError;
pub unsafe fn GetLastErrorString(
&self,
aLastErrorString: &mut nsACString
) -> nsresult
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&self,
aLastErrorString: &mut nsACString
) -> nsresult
/**
* The last SQLite error as a string (in english, straight from the
* sqlite library).
*/
readonly attribute AUTF8String lastErrorString;
pub unsafe fn GetSchemaVersion(&self, aSchemaVersion: *mut int32_t) -> nsresult
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/**
* The schema version of the database. This should not be used until the
* database is ready. The schema will be reported as zero if it is not set.
*/
attribute long schemaVersion;
pub unsafe fn SetSchemaVersion(&self, aSchemaVersion: int32_t) -> nsresult
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/**
* The schema version of the database. This should not be used until the
* database is ready. The schema will be reported as zero if it is not set.
*/
attribute long schemaVersion;
pub unsafe fn CreateStatement(
&self,
aSQLStatement: &nsACString,
_retval: *mut *const mozIStorageStatement
) -> nsresult
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&self,
aSQLStatement: &nsACString,
_retval: *mut *const mozIStorageStatement
) -> nsresult
/**
* Create a mozIStorageStatement for the given SQL expression. The
* expression may use ? to indicate sequential numbered arguments,
* ?1, ?2 etc. to indicate specific numbered arguments or :name and
* $var to indicate named arguments.
*
* @param aSQLStatement
* The SQL statement to execute.
* @return a new mozIStorageStatement
*/
mozIStorageStatement createStatement (in AUTF8String aSQLStatement);
pub unsafe fn ExecuteSimpleSQL(&self, aSQLStatement: &nsACString) -> nsresult
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/**
* Execute a SQL expression, expecting no arguments.
*
* @param aSQLStatement The SQL statement to execute
*/
void executeSimpleSQL (in AUTF8String aSQLStatement);
pub unsafe fn TableExists(
&self,
aTableName: &nsACString,
_retval: *mut bool
) -> nsresult
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&self,
aTableName: &nsACString,
_retval: *mut bool
) -> nsresult
/**
* Check if the given table exists.
*
* @param aTableName
* The table to check
* @return TRUE if table exists, FALSE otherwise.
*/
boolean tableExists (in AUTF8String aTableName);
pub unsafe fn IndexExists(
&self,
aIndexName: &nsACString,
_retval: *mut bool
) -> nsresult
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&self,
aIndexName: &nsACString,
_retval: *mut bool
) -> nsresult
/**
* Check if the given index exists.
*
* @param aIndexName The index to check
* @return TRUE if the index exists, FALSE otherwise.
*/
boolean indexExists (in AUTF8String aIndexName);
pub unsafe fn GetTransactionInProgress(
&self,
aTransactionInProgress: *mut bool
) -> nsresult
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&self,
aTransactionInProgress: *mut bool
) -> nsresult
/**
* Returns true if a transaction is active on this connection.
*/
readonly attribute boolean transactionInProgress;
pub unsafe fn BeginTransaction(&self) -> nsresult
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/**
* Begin a new transaction. sqlite default transactions are deferred.
* If a transaction is active, throws an error.
*/
void beginTransaction ();
pub unsafe fn BeginTransactionAs(&self, transactionType: int32_t) -> nsresult
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void beginTransactionAs (in int32_t transactionType);
pub unsafe fn CommitTransaction(&self) -> nsresult
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/**
* Commits the current transaction. If no transaction is active,
* @throws NS_ERROR_UNEXPECTED.
* @throws NS_ERROR_NOT_INITIALIZED.
*/
void commitTransaction ();
pub unsafe fn RollbackTransaction(&self) -> nsresult
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/**
* Rolls back the current transaction. If no transaction is active,
* @throws NS_ERROR_UNEXPECTED.
* @throws NS_ERROR_NOT_INITIALIZED.
*/
void rollbackTransaction ();
pub unsafe fn CreateTable(
&self,
aTableName: *const c_char,
aTableSchema: *const c_char
) -> nsresult
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&self,
aTableName: *const c_char,
aTableSchema: *const c_char
) -> nsresult
/**
* Create the table with the given name and schema.
*
* If the table already exists, NS_ERROR_FAILURE is thrown.
* (XXX at some point in the future it will check if the schema is
* the same as what is specified, but that doesn't happen currently.)
*
* @param aTableName
* The table name to be created, consisting of [A-Za-z0-9_], and
* beginning with a letter.
* @param aTableSchema
* The schema of the table; what would normally go between the parens
* in a CREATE TABLE statement: e.g., "foo INTEGER, bar STRING".
*
* @throws NS_ERROR_FAILURE
* If the table already exists or could not be created for any other
* reason.
*/
void createTable (in string aTableName, in string aTableSchema);
pub unsafe fn SetGrowthIncrement(
&self,
aIncrement: int32_t,
aDatabaseName: &nsACString
) -> nsresult
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&self,
aIncrement: int32_t,
aDatabaseName: &nsACString
) -> nsresult
/**
* Controls SQLITE_FCNTL_CHUNK_SIZE setting in sqlite. This helps avoid fragmentation
* by growing/shrinking the database file in SQLITE_FCNTL_CHUNK_SIZE increments. To
* conserve memory on systems short on storage space, this function will have no effect
* on mobile devices or if less than 500MiB of space is left available.
*
* @param aIncrement
* The database file will grow in multiples of chunkSize.
* @param aDatabaseName
* Sqlite database name. "" means pass NULL for zDbName to sqlite3_file_control.
* See http://sqlite.org/c3ref/file_control.html for more details.
* @throws NS_ERROR_FILE_TOO_BIG
* If the system is short on storage space.
*/
void setGrowthIncrement (in int32_t aIncrement, in AUTF8String aDatabaseName);
pub unsafe fn EnableModule(&self, aModuleName: &nsACString) -> nsresult
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/**
* Enable a predefined virtual table implementation.
*
* @param aModuleName
* The module to enable. Only "filesystem" is currently supported.
*
* @throws NS_ERROR_FAILURE
* For unknown module names.
*/
[noscript] void enableModule (in ACString aModuleName);
Methods from Deref<Target = mozIStorageAsyncConnection>
pub fn coerce<T: mozIStorageAsyncConnectionCoerce>(&self) -> &T
[src]
Cast this mozIStorageAsyncConnection
to one of its base interfaces.
pub unsafe fn AsyncClose(
&self,
aCallback: *const mozIStorageCompletionCallback
) -> nsresult
[src]
&self,
aCallback: *const mozIStorageCompletionCallback
) -> nsresult
/**
* Close this database connection, allowing all pending statements
* to complete first.
*
* @param aCallback [optional]
* A callback that will be notified when the close is completed,
* with the following arguments:
* - status: the status of the call
* - value: |null|
*
* @throws NS_ERROR_NOT_SAME_THREAD
* If called on a thread other than the one that opened it. The
* callback will not be dispatched.
* @throws NS_ERROR_NOT_INITIALIZED
* If called on a connection that has already been closed or was
* never properly opened. The callback will still be dispatched
* to the main thread despite the returned error.
* @note If this call should fail, the callback won't be invoked.
*/
void asyncClose ([optional] in mozIStorageCompletionCallback aCallback);
pub unsafe fn SpinningSynchronousClose(&self) -> nsresult
[src]
/**
* Forcibly closes a database connection synchronously.
* This should only be used when it's required to close and replace the
* database synchronously to return control to the consumer, for example in
* case of a detected corruption on database opening.
* Since this spins the events loop, it should be used only in very particular
* and rare situations, or it may cause unexpected consequences (crashes).
*
* @throws NS_ERROR_NOT_SAME_THREAD
* If called on a thread other than the one that opened it.
*/
[noscript] void spinningSynchronousClose ();
pub unsafe fn AsyncClone(
&self,
aReadOnly: bool,
aCallback: *const mozIStorageCompletionCallback
) -> nsresult
[src]
&self,
aReadOnly: bool,
aCallback: *const mozIStorageCompletionCallback
) -> nsresult
/**
* Clone a database and make the clone read only if needed.
* SQL Functions and attached on-disk databases are applied to the new clone.
*
* @param aReadOnly
* If true, the returned database should be put into read-only mode.
*
* @param aCallback
* A callback that will be notified when the operation is complete,
* with the following arguments:
* - status: the status of the operation
* - value: in case of success, an intance of
* mozIStorageAsyncConnection cloned from this one.
*
* @throws NS_ERROR_NOT_SAME_THREAD
* If is called on a thread other than the one that opened it.
* @throws NS_ERROR_UNEXPECTED
* If this connection is a memory database.
*
* @note If your connection is already read-only, you will get a read-only
* clone.
* @note The resulting connection will NOT implement mozIStorageConnection,
* it will only implement mozIStorageAsyncConnection.
* @note Due to a bug in SQLite, if you use the shared cache
* (see mozIStorageService), you end up with the same privileges as the
* first connection opened regardless of what is specified in aReadOnly.
* @note The following pragmas are copied over to a read-only clone:
* - cache_size
* - temp_store
* The following pragmas are copied over to a writeable clone:
* - cache_size
* - temp_store
* - foreign_keys
* - journal_size_limit
* - synchronous
* - wal_autocheckpoint
* All SQL functions are copied over to read-only and writeable clones.
* Additionally, all temporary tables, triggers, and views, as well as
* any indexes on temporary tables, are copied over to writeable clones.
* For temporary tables, only the schemas are copied, not their
* contents.
*/
void asyncClone (in boolean aReadOnly, in mozIStorageCompletionCallback aCallback);
pub unsafe fn GetDatabaseFile(
&self,
aDatabaseFile: *mut *const nsIFile
) -> nsresult
[src]
&self,
aDatabaseFile: *mut *const nsIFile
) -> nsresult
/**
* The current database nsIFile. Null if the database
* connection refers to an in-memory database.
*/
readonly attribute nsIFile databaseFile;
pub unsafe fn Interrupt(&self) -> nsresult
[src]
/**
* Causes any pending database operation to abort and return at the first
* opportunity.
* This can only be used on read-only connections that don't implement
* the mozIStorageConnection interface.
* @note operations that are nearly complete may still be able to complete.
* @throws if used on an unsupported connection type, or a closed connection.
*/
void interrupt ();
pub unsafe fn CreateAsyncStatement(
&self,
aSQLStatement: &nsACString,
_retval: *mut *const mozIStorageAsyncStatement
) -> nsresult
[src]
&self,
aSQLStatement: &nsACString,
_retval: *mut *const mozIStorageAsyncStatement
) -> nsresult
/**
* Create an asynchronous statement for the given SQL. An
* asynchronous statement can only be used to dispatch asynchronous
* requests to the asynchronous execution thread and cannot be used
* to take any synchronous actions on the database.
*
* The expression may use ? to indicate sequential numbered arguments,
* ?1, ?2 etc. to indicate specific numbered arguments or :name and
* $var to indicate named arguments.
*
* @param aSQLStatement
* The SQL statement to execute.
* @return a new mozIStorageAsyncStatement
* @note The statement is created lazily on first execution.
*/
mozIStorageAsyncStatement createAsyncStatement (in AUTF8String aSQLStatement);
pub unsafe fn ExecuteAsync(
&self,
aStatements: *mut *const mozIStorageBaseStatement,
aNumStatements: uint32_t,
aCallback: *const mozIStorageStatementCallback,
_retval: *mut *const mozIStoragePendingStatement
) -> nsresult
[src]
&self,
aStatements: *mut *const mozIStorageBaseStatement,
aNumStatements: uint32_t,
aCallback: *const mozIStorageStatementCallback,
_retval: *mut *const mozIStoragePendingStatement
) -> nsresult
/**
* Execute an array of statements created with this connection using
* any currently bound parameters. When the array contains multiple
* statements, the execution is wrapped in a single
* transaction. These statements can be reused immediately, and
* reset does not need to be called.
*
* @param aStatements
* The array of statements to execute asynchronously, in the order they
* are given in the array.
* @param aNumStatements
* The number of statements in aStatements.
* @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.
*
* @note If you have any custom defined functions, they must be
* re-entrant since they can be called on multiple threads.
*/
mozIStoragePendingStatement executeAsync ([array, size_is (aNumStatements)] in mozIStorageBaseStatement aStatements, in unsigned long aNumStatements, [optional] in mozIStorageStatementCallback aCallback);
pub unsafe fn ExecuteSimpleSQLAsync(
&self,
aSQLStatement: &nsACString,
aCallback: *const mozIStorageStatementCallback,
_retval: *mut *const mozIStoragePendingStatement
) -> nsresult
[src]
&self,
aSQLStatement: &nsACString,
aCallback: *const mozIStorageStatementCallback,
_retval: *mut *const mozIStoragePendingStatement
) -> nsresult
/**
* Execute asynchronously an SQL expression, expecting no arguments.
*
* @param aSQLStatement
* The SQL statement to execute
* @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 statement execution.
*/
mozIStoragePendingStatement executeSimpleSQLAsync (in AUTF8String aSQLStatement, [optional] in mozIStorageStatementCallback aCallback);
pub unsafe fn CreateFunction(
&self,
aFunctionName: &nsACString,
aNumArguments: int32_t,
aFunction: *const mozIStorageFunction
) -> nsresult
[src]
&self,
aFunctionName: &nsACString,
aNumArguments: int32_t,
aFunction: *const mozIStorageFunction
) -> nsresult
/**
* Create a new SQL function. If you use your connection on multiple threads,
* your function needs to be threadsafe, or it should only be called on one
* thread.
*
* @param aFunctionName
* The name of function to create, as seen in SQL.
* @param aNumArguments
* The number of arguments the function takes. Pass -1 for
* variable-argument functions.
* @param aFunction
* The instance of mozIStorageFunction, which implements the function
* in question.
*/
void createFunction (in AUTF8String aFunctionName, in long aNumArguments, in mozIStorageFunction aFunction);
pub unsafe fn CreateAggregateFunction(
&self,
aFunctionName: &nsACString,
aNumArguments: int32_t,
aFunction: *const mozIStorageAggregateFunction
) -> nsresult
[src]
&self,
aFunctionName: &nsACString,
aNumArguments: int32_t,
aFunction: *const mozIStorageAggregateFunction
) -> nsresult
/**
* Create a new SQL aggregate function. If you use your connection on
* multiple threads, your function needs to be threadsafe, or it should only
* be called on one thread.
*
* @param aFunctionName
* The name of aggregate function to create, as seen in SQL.
* @param aNumArguments
* The number of arguments the function takes. Pass -1 for
* variable-argument functions.
* @param aFunction
* The instance of mozIStorageAggreagteFunction, which implements the
* function in question.
*/
void createAggregateFunction (in AUTF8String aFunctionName, in long aNumArguments, in mozIStorageAggregateFunction aFunction);
pub unsafe fn RemoveFunction(&self, aFunctionName: &nsACString) -> nsresult
[src]
/**
* Delete custom SQL function (simple or aggregate one).
*
* @param aFunctionName
* The name of function to remove.
*/
void removeFunction (in AUTF8String aFunctionName);
pub unsafe fn SetProgressHandler(
&self,
aGranularity: int32_t,
aHandler: *const mozIStorageProgressHandler,
_retval: *mut *const mozIStorageProgressHandler
) -> nsresult
[src]
&self,
aGranularity: int32_t,
aHandler: *const mozIStorageProgressHandler,
_retval: *mut *const mozIStorageProgressHandler
) -> nsresult
/**
* Sets a progress handler. Only one handler can be registered at a time.
* If you need more than one, you need to chain them yourself. This progress
* handler should be threadsafe if you use this connection object on more than
* one thread.
*
* @param aGranularity
* The number of SQL virtual machine steps between progress handler
* callbacks.
* @param aHandler
* The instance of mozIStorageProgressHandler.
* @return previous registered handler.
*/
mozIStorageProgressHandler setProgressHandler (in int32_t aGranularity, in mozIStorageProgressHandler aHandler);
pub unsafe fn RemoveProgressHandler(
&self,
_retval: *mut *const mozIStorageProgressHandler
) -> nsresult
[src]
&self,
_retval: *mut *const mozIStorageProgressHandler
) -> nsresult
/**
* Remove a progress handler.
*
* @return previous registered handler.
*/
mozIStorageProgressHandler removeProgressHandler ();
Trait Implementations
impl XpCom for mozIStorageConnection
[src]
const IID: nsIID
IID: nsIID = nsID(1252174919, 36132, 16388, [155, 49, 236, 11, 216, 95, 12, 195])
fn query_interface<T: XpCom>(&self) -> Option<RefPtr<T>>
[src]
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 mozIStorageConnection
[src]
unsafe fn addref(&self)
[src]
Increment the reference count.
unsafe fn release(&self)
[src]
Decrement the reference count, potentially freeing backing memory.
impl Deref for mozIStorageConnection
[src]
type Target = mozIStorageAsyncConnection
The resulting type after dereferencing.
fn deref(&self) -> &mozIStorageAsyncConnection
[src]
Dereferences the value.