DataProvider::NullDataProvider Class Reference

A dumrequest data provider that provides an empty hash as the request and response types. More...

#include <NullDataProvider.qc.dox.h>

Inheritance diagram for DataProvider::NullDataProvider:

Public Member Methods
	constructor (*hash< auto > options)
	Creates the object.
*string	getDesc ()
	Returns the data provider description.
string	getName ()
	Returns the name of this data provider ("NullRequest")
hash< DataProviderInfo >	getStaticInfoImpl ()
	Returns data provider static info.
Public Member Methods inherited from DataProvider::AbstractDataProvider
	addField (AbstractDataField field, *hash< auto > field_add_options)
	Creates a new field. More...
	beginTransaction ()
	Begins a transaction with a data provider. More...
	checkAddField ()
	Ensures that the data provider supports adding fields. More...
	checkCreate ()
	Ensures that the data provider supports record creation. More...
	checkCreateChild ()
	Ensures that the data provider supports creating children. More...
	checkDelete ()
	Ensures that the data provider supports record deletion. More...
	checkDeleteChild ()
	Ensures that the data provider supports deleting children. More...
	checkDeleteField ()
	Ensures that the data provider supports deleting fields. More...
	checkMessages ()
	Ensures that the data provider supports sending messages. More...
	checkObservable ()
	Ensures that the data provider supports observer pattern / event API. More...
	checkRead ()
	Ensures that the data provider supports read operations. More...
	checkRequest ()
	Ensures that the data provider supports the request API. More...
	checkSchema ()
	Ensures that the data provider supports a schema. More...
	checkSearchExpressions ()
	Ensures that the data provider supports advanced search expressions. More...
	checkUpdate ()
	Ensures that the data provider supports record upserts. More...
	checkUpdateField ()
	Ensures that the data provider supports updating fields. More...
	checkUpsert ()
	Ensures that the data provider supports record upserts. More...
	commit ()
	Commits data written to the data provider. More...
	constructor ()
	Creates the data provider.
	constructor (Logger logger)
	Creates the data provider with the given Logger.
AbstractDataProvider	createChildProvider (string name, hash< string, AbstractDataField > fields, *hash< auto > child_create_options)
	Creates a new child data provider and returns it after adding as a child. More...
*hash< auto >	createRecord (hash< auto > rec, *hash< auto > create_options)
	Creates the given record in the data provider. More...
	deleteChildProvider (string name, *hash< auto > child_delete_options)
	Deletes a child data provider. More...
	deleteField (string name, *hash< auto > field_delete_options)
	Deletes an existing field. More...
int	deleteRecords (*hash< auto > where_cond, *hash< auto > search_options)
	Deletes zero or more records. More...
int	deleteRecords (*hash< DataProviderExpression > where_cond, *hash< auto > search_options)
	Deletes zero or more records. More...
auto	doRequest (auto req, *hash< auto > request_options)
	Makes a request and returns the response. More...
AbstractDataProviderBulkOperation	getBulkInserter ()
	Returns a bulk insert operation object for the data provider. More...
AbstractDataProviderBulkRecordInterface	getBulkRecordInterface (int block_size=1000, *hash< auto > search_options)
	Returns an iterator iterating all records with the bulk read API. More...
AbstractDataProviderBulkOperation	getBulkUpserter ()
	Returns a bulk upsert operation object for the data provider. More...
*AbstractDataProvider	getChildProvider (string name)
	Returns the given child provider or NOTHING if the given child is unknown. More...
AbstractDataProvider	getChildProviderEx (string name)
	Returns the given child provider or throws an exception if the given child is unknown. More...
*list< string >	getChildProviderNames ()
	Returns a list of child data provider names, if any. More...
AbstractDataProvider	getChildProviderPath (string path)
	Returns the given child provider from a "/" separated path string. More...
*list< hash< DataProviderSummaryInfo > >	getChildProviderSummaryInfo ()
	Return data provider summary info. More...
*string	getDesc ()
	Returns the data provider description.
private hash< DataProviderExpression >	getEqualityComparisonExpression (int role, hash< DataProviderInfo > info, string key, auto value)
	Returns an equality comparison expression. More...
AbstractDataProviderType	getErrorResponseType (string error_code)
	Returns the type for the given error code. More...
*hash< string, AbstractDataProviderType >	getErrorResponseTypes ()
	Returns a hash of error responses, if any. More...
hash< DataProviderMessageInfo >	getEventInfo (string event_id)
	Returns the description of an observable event, if any. More...
hash< string, hash< DataProviderMessageInfo > >	getEventTypes ()
	Returns a hash of all supported event types. More...
hash< DataProviderInfo >	getInfo ()
	Returns data provider info.
hash< auto >	getInfoAsData (*bool with_type_info)
	Returns static provider information as data; no objects are returned. More...
*hash< string, hash< MapperRuntimeKeyInfo > >	getMapperRuntimeKeys ()
	Returns custom data mapper runtime keys. More...
hash< DataProviderMessageInfo >	getMessageInfo (string message_id)
	Returns the description of an outbound message, if any. More...
hash< string, hash< DataProviderMessageInfo > >	getMessageTypes ()
	Returns a hash of all supported outbound messages. More...
AbstractDataProviderRecordIterator	getRecordIterator (*hash< auto > search_options)
	Returns an iterator iterating all records. More...
*AbstractDataProviderType	getRequestType ()
	Returns the description of a successful request message, if any. More...
*AbstractDataProviderType	getResponseType ()
	Returns the description of a response message, if this object represents a response message. More...
object	getSchemaObject ()
	Returns the schema supporting this data provider. More...
*hash< auto >	getSearchExpression (*hash< auto > where_cond, *hash< auto > search_options)
	Returns a search expression for a standard search hash. More...
private hash< DataProviderExpression >	getSimpleArgumentIntern (int role, hash< DataProviderInfo > info, hash< DataProviderExpressionInfo > expinfo, string key, auto value)
	Returns an argument for an expression. More...
hash< DataProviderSummaryInfo >	getSummaryInfo ()
	Return data provider summary info.
AbstractDataProviderRecordIterator	requestSearchRecords (auto req, *hash< auto > where_cond, *hash< auto > search_options)
	Returns an iterator for zero or more records matching the search options according to an API request. More...
AbstractDataProviderRecordIterator	requestSearchRecords (auto req, *hash< DataProviderExpression > where_cond, *hash< auto > search_options)
	Returns an iterator for zero or more records matching the search options according to an API request. More...
bool	requiresTransactionManagement ()
	Returns True if the data provider requires transaction management. More...
	rollback ()
	Rolls back data written to the data provider. More...
*hash< auto >	searchFirstRecord (hash< auto > where_cond, *hash< auto > search_options)
	Returns the first record matching the search options. More...
*hash< auto >	searchFirstRecord (hash< DataProviderExpression > where_cond, *hash< auto > search_options)
	Returns the first record matching the search options. More...
AbstractDataProviderRecordIterator	searchRecords (*hash< auto > where_cond, *hash< auto > search_options)
	Returns an iterator for zero or more records matching the search options. More...
AbstractDataProviderRecordIterator	searchRecords (*hash< DataProviderExpression > where_cond, *hash< auto > search_options)
	Returns an iterator for zero or more records matching the search options. More...
AbstractDataProviderBulkRecordInterface	searchRecordsBulk (int block_size=1000, *hash< DataProviderExpression > where_cond, *hash< auto > search_options)
	Returns an iterator for zero or more records matching the search options. More...
AbstractDataProviderBulkRecordInterface	searchRecordsBulk (int block_size=1000, *hash< auto > where_cond, *hash< auto > search_options)
	Returns an iterator for zero or more records matching the search options. More...
*hash< auto >	searchSingleRecord (hash< auto > where_cond, *hash< auto > search_options)
	Returns a single record matching the search options. More...
*hash< auto >	searchSingleRecord (hash< DataProviderExpression > where_cond, *hash< auto > search_options)
	Returns a single record matching the search options. More...
	sendMessage (string message_id, auto msg, *hash< auto > send_message_options)
	Sends a message from message-capable data providers. More...
	setLogger (Logger logger)
	Sets or replaces the logger.
	updateField (string name, AbstractDataField field, *hash< auto > field_update_options)
	Updates an existing field. More...
int	updateRecords (hash< auto > set, *hash< auto > where_cond, *hash< auto > search_options)
	Updates zero or more records matching the search options. More...
int	updateRecords (hash< auto > set, *hash< DataProviderExpression > where_cond, *hash< auto > search_options)
	Updates zero or more records matching the search options. More...
bool	updateSingleRecord (hash< auto > set, hash< auto > where_cond, *hash< auto > search_options)
	Updates a single record matching the search options. More...
bool	updateSingleRecord (hash< auto > set, hash< DataProviderExpression > where_cond, *hash< auto > search_options)
	Updates a single record matching the search options. More...
string	upsertRecord (hash< auto > rec, *hash< auto > upsert_options)
	Upserts the given record in the data provider. More...

Public Attributes
const	ProviderInfo
	Provider info.
Public Attributes inherited from DataProvider::AbstractDataProvider
const	DataProviderSummaryInfoKeys = map $1.getName()
	A list of members names of the DataProviderSummaryInfoKeys hashdecl.
const	GenericExpressionImplementations
	Generic expression implementations for data providers without native search functionality.
const	GenericExpressions = map {$1.key: $1.value.exp}
	Generic search operator expressions. More...

Private Member Methods
auto	doRequestImpl (auto req, *hash< auto > request_options)
	Returns an empty hash.
*hash< string, AbstractDataProviderType >	getErrorResponseTypesImpl ()
	Returns NOTHING.
*AbstractDataProviderType	getRequestTypeImpl ()
	Returns an empty hash type.
*AbstractDataProviderType	getResponseTypeImpl ()
	Returns an empty hash type.

Static Private Member Methods
static HashDataType	type ()
	The default request and response type for this data provider.

Additional Inherited Members
Static Public Member Methods inherited from DataProvider::AbstractDataProvider
static auto	evalGenericExpressionValue (hash< auto > rec, auto val)
	Evaluates the given expression with the generic internal implementation and returns the result. More...
static private hash< DataProviderExpressionInfo >	getExpression (int role, string exp, *hash< string, hash< DataProviderExpressionInfo > > expmap)
	Returns an expression definition for an expression code or throws an exception. More...
static bool	setDynamicValueCallbacks ()
	Ensures that no callbacks can be set for dynamic URI resolution. More...
Private Attributes inherited from DataProvider::AbstractDataProvider
const	GenericRecordSearchOptions
	Generic record search options; see details below. More...
*Logger	logger
	Logger for logging.
Static Private Attributes inherited from DataProvider::AbstractDataProvider
static bool	callbacks_locked = False
	flag if callbacks are locked
static code	cb_resolve_value
	static callback for dynamic value resolution
static code	cb_value_needs_resolution
	static callback the returns a bool if the value needs dynamic resolution

Detailed Description

A dumrequest data provider that provides an empty hash as the request and response types.