Qore ConnectionProvider Module Reference 1.7.2
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ConnectionProvider::AbstractConnectionWithInfo Class Referenceabstract

abstract base class for connections More...

#include <AbstractConnectionWithInfo.qc.dox.h>

Inheritance diagram for ConnectionProvider::AbstractConnectionWithInfo:
[legend]

Public Member Methods

 constructor (string name, string description, string url, hash< auto > attributes={}, hash< auto > options={})
 creates the AbstractConnection object More...
 
hash< ConnectionSchemeInfogetConnectionSchemeInfo ()
 Returns the ConnectionSchemeInfo hash for this object.
 
*hash< auto > getDefaultOptions ()
 returns default options
 
*hash< auto > getOptions ()
 returns static / initialization options
 
- Public Member Methods inherited from ConnectionProvider::AbstractConnection
deprecated constructor (string name, string desc, string url, bool monitor, *hash opts, hash urlh, *string safe_url, *bool enabled)
 creates the AbstractConnection object More...
 
 constructor (string name, string description, string url, hash< auto > attributes={}, hash< auto > options={})
 creates the AbstractConnection object More...
 
object get (bool connect=True, *hash< auto > rtopts)
 returns the underlying connection object More...
 
hash< ConfigInfogetConfigHash ()
 returns a ConfigInfo hash of static configuration information about the connection More...
 
hash< ConnectionSchemeInfogetConnectionSchemeInfo ()
 Returns a default ConnectionSchemeInfo hash.
 
AbstractDataProvider getDataProvider ()
 returns a data provider object for this connection, if supported More...
 
*hash< auto > getDefaultOptions ()
 returns default options
 
string getDescription ()
 Returns the connection description. More...
 
hash< auto > getExtendedInfo (*hash< auto > opts)
 Returns connection info plus any extended information returned by the connection. More...
 
hash< ConnectionInfogetInfo (*hash< auto > opts)
 returns a ConnectionInfo hash of information about the connection More...
 
hash< ConnectionInfogetInfo (bool with_password=False)
 returns a ConnectionInfo hash of information about the connection More...
 
string getName ()
 Returns the connection name. More...
 
*hash< auto > getOptions ()
 returns static / initialization options
 
object getPollImpl ()
 Returns an unconnected object for a non-blocking poll operation. More...
 
*hash< auto > getRealOptions ()
 returns options for saving the connection's configuration information
 
*hash< auto > getRuntimeOptions ()
 returns runtime options
 
string getSafeUrl ()
 Returns the connection safe URL (without password info) More...
 
auto getTag (string tag)
 returns the value of the given tag or NOTHING if not present
 
auto getTagEx (string tag)
 returns the value of the given tag or throws an exception if the tag is not set with a value More...
 
hash< auto > getTags ()
 returns all tags associated with the connection
 
abstract string getType ()
 returns the string type name for the connection object
 
string getUrl ()
 Returns the connection URL. More...
 
bool hasDataProvider ()
 returns True if the connection returns a data provider with the getDataProvider() method More...
 
 parseTextOptions ()
 this method is called when parsing connection file definitions from text files when loading into the database More...
 
hash< PingInfoping (bool throw_exception=False)
 returns a hash with the results of the ping operation More...
 
AbstractPollOperation startPollConnect ()
 Called to start the connection polling operation. More...
 
bool supportsPollingApi ()
 returns True if the connection supports the Qore Socket-based polling API More...
 

Private Member Methods

abstract hash< ConnectionSchemeInfogetConnectionSchemeInfoImpl ()
 Returns the ConnectionSchemeInfo hash for this object.
 
- Private Member Methods inherited from ConnectionProvider::AbstractConnection
abstract object getImpl (bool connect=True, *hash< auto > rtopts)
 this method must return the connection object corresponding to the object's configuration More...
 
string getSafeUrl (hash< auto > urlh)
 creates a "safe" URL string with password information removed More...
 
hash< UrlInfo > parseUrl (string url)
 Parse the URL to a hash. More...
 
hash< PingInfopingIntern (hash< PingInfo > rv)
 performs the ping by executing get(); returns a PingInfo hash
 
 setChildCapabilitiesImpl ()
 Override to set child data provider capabilities once per child class.
 
hash< auto > validateOptions (hash< auto > options)
 performs options validation in the constructor More...
 

Additional Inherited Members

- Public Attributes inherited from ConnectionProvider::AbstractConnection
bool children_can_support_apis = False
 if the data provider or any of its children support requests (APIs)
 
bool children_can_support_messages = False
 if the data provider or any of its children support messages
 
bool children_can_support_observers = False
 if the data provider or any of its children support events
 
bool children_can_support_records = False
 if the data provider or any of its children support records
 
bool debug_data = False
 debug data flag; to be used an an indication for a higher-level implementation
 
string desc
 connection description
 
bool enabled = True
 enabled/disabled indicator flag
 
hash< auto > internal_info
 internal tags
 
date last_check
 date/time of last check/ping
 
bool locked = False
 locked/unlocked flag
 
bool loopback = False
 set to True for loopback connections
 
bool monitor
 monitoring flag
 
string name
 connection name
 
*hash< auto > opts
 connection options
 
*hash< auto > orig_opts
 original connection options
 
string safe_url
 "safe" URL (password information removed)
 
string status = "not checked"
 status string; in case of a connection error this string will be the error string
 
hash< auto > tags = {}
 connection tags; user-defined key-value pairs
 
bool up = False
 connection status flag; set by monitoring or explicit pings/connections
 
date updated
 date/time of last update
 
string url
 connection URL (potentially with password info)
 
hash< auto > urlh
 broken down URL hash (as returned by Qore::parse_url())
 
- Static Public Attributes inherited from ConnectionProvider::AbstractConnection
static *code post_processing
 optional code for default post-processing of objects created by getImpl(); must take the connection object and the object created as arguments
 

Detailed Description

abstract base class for connections

this class can be specialized to provide for user-defined connection types

Member Function Documentation

◆ constructor()

ConnectionProvider::AbstractConnectionWithInfo::constructor ( string  name,
string  description,
string  url,
hash< auto >  attributes = {},
hash< auto >  options = {} 
)

creates the AbstractConnection object

Parameters
namethe name of the connection
descriptionconnection description
urlconnection URL (potentially with password info)
attributesvarious attributes; see below
optionsconnection options
Attributes
Attributes are special flags for given connection - stored as public attributes of the object instance. For now there are:
  • enabled (bool), default True
  • monitor (bool), default True
  • locked (bool), default False
  • tags (hash), no default value
Exceptions
CONNECTION-OPTION-ERRORmissing or invalid connection option