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* It acts as a container for DataSource connection |
* It acts as a container for DataSource connection |
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* metadata. Think of it as an enhanced dsn. |
* metadata. Think of it as an enhanced dsn. |
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* |
* |
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* It gets used by DataSource::GenericDataSource |
* It gets used by DataSource::Generic |
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* to be informed about the most important stuff it |
* to be informed about the most important stuff it |
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* has to do. |
* has to do. |
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* |
* |
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* |
* @author Andreas Motl <andreas.motl@ilo.de> |
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* @package org.netfrag.glib |
* @package org.netfrag.glib |
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* @module DataSource::Locator |
* @name DataSource::Locator |
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* |
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* |
* |
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*/ |
*/ |
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/** |
/** |
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* <b>Cvs-Log:</b> |
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* |
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* <pre> |
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* $Id$ |
* $Id$ |
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* |
* |
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* $Log$ |
* $Log$ |
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* Revision 1.19 2003/03/11 03:05:01 joko |
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* + fixed metadata for phpDocumentor |
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* |
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* Revision 1.18 2003/03/11 02:42:51 joko |
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* + fixed metadata for phpDocumentor |
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* Revision 1.17 2003/03/11 02:34:55 joko |
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* + fixed metadata for phpDocumentor |
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* Revision 1.16 2003/03/11 02:28:12 joko |
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* + fixed metadata for phpDocumentor |
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* Revision 1.15 2003/03/11 02:23:03 joko |
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* + fixed metadata for phpDocumentor |
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* |
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* Revision 1.14 2003/03/11 02:14:24 joko |
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* + fixed metadata for phpDocumentor |
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* |
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* Revision 1.13 2003/03/11 02:04:37 joko |
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* + fixed metadata for phpDocumentor |
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* |
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* Revision 1.12 2003/03/11 01:10:00 joko |
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* + fixed metadata for phpDocumentor |
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* |
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* Revision 1.11 2003/03/11 00:12:49 joko |
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* + fixed metadata for phpDocumentor |
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* |
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* Revision 1.10 2003/03/10 23:25:03 joko |
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* + fixed metadata for phpDocumentor |
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* |
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* Revision 1.9 2003/03/10 22:31:55 joko |
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* + fixed metadata for phpDocumentor |
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* |
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* Revision 1.8 2003/03/09 15:50:36 joko |
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* + additional metadata for Autodia |
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* |
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* Revision 1.7 2003/03/05 17:13:16 joko |
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* updated docu (phpDocumentor testing....) |
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* |
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* Revision 1.6 2003/03/05 16:10:08 joko |
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* updated docu (phpDocumentor testing....) |
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* Revision 1.5 2003/03/05 15:40:39 joko |
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* updated docu (phpDocumentor testing....) |
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* |
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* Revision 1.4 2003/03/05 15:26:23 joko |
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* updated docu (phpDocumentor testing....) |
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* |
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* Revision 1.3 2003/03/05 15:21:54 joko |
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* updated docu (phpDocumentor testing....) |
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* |
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* Revision 1.2 2003/03/05 15:01:10 joko |
* Revision 1.2 2003/03/05 15:01:10 joko |
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* updated docu |
* updated docu |
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* |
* |
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* Revision 1.1 2003/03/05 12:04:37 joko |
* Revision 1.1 2003/03/05 12:04:37 joko |
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* + initial commit |
* + initial commit |
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* </pre> |
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* |
* |
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* |
* |
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*/ |
*/ |
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|
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/** |
/** |
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* It helps GenericDataSource working in different "operation modes". |
* It helps DataSource::Generic working in different "operation modes". |
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* |
* |
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* o Pass-Through-Reference: php Object will get passed through all layers |
* <p> |
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* o Pass-Through-Memory: reference to a memory area will get used |
* <b>Modes:</b> (these are proposals, more or less...) |
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* x Build-Locator: build locator from datasource-type and adapter-type |
* o Pass-Through-Reference: php Object will get passed through all layers |
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* o Use-Locator: directly use DataSource::Locator instance passed in |
* o Pass-Through-Memory: reference to a memory area will get used |
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* o Merge-Locators: merge metadata of two or more DataSource::Locator instances |
* + Build-Locator: build locator from datasource-type and adapter-type |
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* o Build-AutoLocator: use global constants making up our metadata |
* o Use-Locator: directly use DataSource::Locator instance passed in |
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* |
* o Merge-Locators: merge metadata of two or more DataSource::Locator instances |
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* |
* o Build-AutoLocator: use global constants making up our metadata |
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* It can/should contain (flexible, just some parameters are required for each operation mode) |
* </p> |
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* |
* |
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* <b>It can/should contain:</b> |
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* (flexible, just some parameters are required for each operation mode) |
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* o an oldschool "dsn"-string (e.g. for rdbms-connection via PEAR) |
* o an oldschool "dsn"-string (e.g. for rdbms-connection via PEAR) |
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* + name of a Proxy module to use to *wrap/hide* the connection/transport-layer |
* + (x) name of a Proxy module to use to *wrap/hide* the connection/transport-layer |
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* (e.g. DataSource::Proxy::XMLRPC via DesignPattern::RemoteProxy) |
* (e.g. DataSource::Proxy::XMLRPC via DesignPattern::RemoteProxy) |
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* + metadata (a hash) directly describing *where* to connect to (e.g. 'Host', 'Port') |
* + (x) metadata (a hash) directly describing *where* to connect to (e.g. 'Host', 'Port') |
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* o an instance of an already instantiated arbitrary datasource handler (e.g. 'source') |
* o an instance of an already instantiated arbitrary datasource handler (e.g. 'source') |
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* this will get propagated (pass-through-mode) |
* this will get propagated (pass-through-mode) |
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* + a datasource-type (of 'rpc|mysql|csv-file|xml-file') |
* o a datasource-type (of 'rpc|mysql|csv-file|xml-file') |
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* this will be mapped to a module name and used as a *Proxy* |
* this will be mapped to a module name and used as a *Proxy* |
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* by the GenericDataSource at runtime |
* by the DataSource::Generic at runtime |
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* + an adapter-type (of 'phpHtmlLib|pear') |
* + (x) an adapter-type (of 'phpHtmlLib|pear') |
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* this will be mapped to a module name and used as an *Adapter* |
* this will be mapped to a module name and used as an *Adapter* |
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* by the GenericDataSource at runtime |
* by the DataSource::Generic at runtime |
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* o names of global constants where to find these informations |
* o names of global constants where to find these informations |
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* o datasource-type ('rpc|csv-file|...') <-> datasource-family ('orm|rdbms|odbms') |
* o datasource-type ('rpc|csv-file|...') <-> datasource-family ('orm|rdbms|odbms') |
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* |
* |
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|
* <b>It can do:</b> |
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* - builds a larger locator from a minimum of information passed in via constructor-arguments |
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* - direct fallback mode to some predefined constant names if locator is empty and above method fails |
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* - direct fallback mode to some predefined values if just *everything* fails |
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* |
* |
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* --- It can do |
* <b>How to use?</b> |
|
* x builds a larger locator from a minimum of information passed in via constructor-arguments |
|
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* o direct fallback mode to some predefined constant names if locator is empty and above method fails |
|
|
* o direct fallback mode to some predefined values if just *everything* fails |
|
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* |
|
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* |
|
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* --- How to use? |
|
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* |
* |
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* Pass an array holding "locator metadata" to the constructor. |
* Pass an array holding "locator metadata" to the constructor. |
126 |
* This module takes care of the rest. |
* This module takes care of the rest. |
|
* |
|
127 |
* Pass an array to the constructor: (e.g.) |
* Pass an array to the constructor: (e.g.) |
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* |
* |
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* 1. for doing rpc-calls.... |
* 1. for doing rpc-calls.... |
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|
* <code> |
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* $locator = array( |
* $locator = array( |
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* datasource_type => 'rpc', |
* datasource_type => 'rpc', |
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* [adapter_type => 'phpHtmlLib',] |
* [adapter_type => 'phpHtmlLib',] |
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* metadata => array( Host => 'localhost', Port => '8765' ), |
* metadata => array( Host => 'localhost', Port => '8765' ), |
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* ); |
* ); |
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* $source = new GenericDataSource($locator); |
* $source = ne w DataSource::Generic($locator); |
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* $this->set_data_source( &$source ); |
* $this->set_data_source( &$source ); |
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|
* </code> |
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* |
* |
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* 2. [proposal] for common/oldschool datahandles.... |
* 2. [proposal] for common/oldschool datahandles.... |
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|
* <code> |
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* $locator = array( |
* $locator = array( |
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* dsn => 'known dsn markup', |
* dsn => 'known dsn markup', |
144 |
* ); |
* ); |
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* $source = new GenericDataSource($locator); |
* $source = ne w DataSource::Generic($locator); |
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* $this->set_data_source( &$source ); |
* $this->set_data_source( &$source ); |
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|
* </code> |
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* |
* |
149 |
* |
* |
150 |
* |
* |
155 |
* @license GNU LGPL (GNU Lesser General Public License) |
* @license GNU LGPL (GNU Lesser General Public License) |
156 |
* @link http://www.gnu.org/licenses/lgpl.txt |
* @link http://www.gnu.org/licenses/lgpl.txt |
157 |
* |
* |
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|
* @package org.netfrag.glib |
159 |
* @subpackage DataSource |
* @subpackage DataSource |
160 |
* @name DataSource::Locator |
* @name DataSource::Locator |
|
* @filesource |
|
161 |
* |
* |
162 |
*/ |
*/ |
|
|
|
|
|
|
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class DataSource_Locator { |
class DataSource_Locator { |
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|
|
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/** |
/** |
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* This var holds the locator metadata hash |
* This var holds the locator metadata hash, |
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|
* |
168 |
* which is built from some predefined rules |
* which is built from some predefined rules |
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* using metadata from $_options and some |
* using metadata from $_options and some |
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* other presets. |
* other presets. |
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* |
* |
172 |
* See '_buildLocator' which acts as a dispatcher |
* {@see build}, which acts as a dispatcher |
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* depending on $_options[datasource]. |
* depending on $_options[datasource]. (main dispatching level) |
|
* (main dispatching level) |
|
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* |
* |
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* The structure of a full blown locator looks like this: |
* The structure of a full blown locator looks like this: |
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* |
* |
177 |
|
* <code> |
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* $locator = array( |
* $locator = array( |
179 |
* type => '<your type specifying the datasource-type>', |
* type => '<your type specifying the datasource-type>', |
180 |
* metadata => array( |
* metadata => array( |
182 |
* ), |
* ), |
183 |
* [dsn => '<your dsn markup>'], |
* [dsn => '<your dsn markup>'], |
184 |
* ); |
* ); |
185 |
|
* </code> |
186 |
* |
* |
187 |
* Example 1 - data is inside a rdbms, using a dsn to connect to it: |
* Example 1 - data is inside a rdbms, using a dsn to connect to it: |
188 |
|
* <code> |
189 |
* $locator = array( |
* $locator = array( |
190 |
* dsn => 'mysql://username:password@localhost/database', |
* dsn => 'mysql://username:password@localhost/database', |
191 |
* ); |
* ); |
192 |
|
* </code> |
193 |
* |
* |
194 |
* Example 2 - data is inside an odbms, reachable by doing remote procedure calls (rpc): |
* Example 2 - data is inside an odbms, reachable by doing remote procedure calls (rpc): |
195 |
|
* <code> |
196 |
* $locator = array( |
* $locator = array( |
197 |
* type => 'rpc', |
* type => 'rpc', |
198 |
* metadata => array( |
* metadata => array( |
201 |
* Port => '8765', |
* Port => '8765', |
202 |
* ) |
* ) |
203 |
* ); |
* ); |
204 |
|
* </code> |
205 |
|
* |
206 |
|
* @deprecated |
207 |
* |
* |
208 |
*/ |
*/ |
209 |
|
var $_locator_metadata = NULL; |
|
//var $_locator_metadata = NULL; |
|
210 |
|
|
211 |
|
|
212 |
/** |
/** |
213 |
* This var holds the arguments passed in to the constructor. |
* This var holds the arguments passed in to the constructor. |
214 |
* We will try to build full blown locator metadata information from that. |
* We will try to build full blown locator metadata information from that. |
215 |
* |
* |
216 |
*/ |
* @deprecated |
217 |
//var $_in = NULL; |
* |
218 |
|
*/ |
219 |
|
var $_in = NULL; |
220 |
|
|
221 |
/** |
/** |
222 |
* This var holds the locator metadata informations inside |
* This var holds the locator metadata informations inside |
223 |
* a single hash. This is returned from '->get()'. |
* a single hash. This is returned from '->get()'. |
224 |
* |
* |
225 |
*/ |
* @deprecated |
226 |
//var $_out = NULL; |
* |
227 |
|
*/ |
228 |
|
var $_out = NULL; |
229 |
|
|
230 |
|
|
231 |
/** |
/** |
239 |
// name of an Adapter module |
// name of an Adapter module |
240 |
var $_adapter_type; |
var $_adapter_type; |
241 |
|
|
242 |
// additional information required (passed on to the Proxy by GenericDataSource) |
// additional information required (passed on to the Proxy by DataSource::Generic) |
243 |
var $_metadata = array(); |
var $_metadata = array(); |
244 |
|
|
245 |
//var $_dsn; |
//var $_dsn; |
249 |
* The constructor is used to pass in the |
* The constructor is used to pass in the |
250 |
* locator metadata hash. |
* locator metadata hash. |
251 |
* |
* |
252 |
* @param LocatorMetadataHash array - layout: array( type => '', metadata => '', dsn => '' ) |
* @param object(DataSource::Locator)|hash optional: a &$locator instance |
|
* @param Query array - layout: array( type => '', metadata => '', dsn => '' ) |
|
253 |
*/ |
*/ |
254 |
function DataSource_Locator() { |
function DataSource_Locator() { |
255 |
$args_multi = func_get_args(); |
$args_multi = func_get_args(); |
325 |
|
|
326 |
/** |
/** |
327 |
* Set the locator metadata hash we will feed *partly* |
* Set the locator metadata hash we will feed *partly* |
328 |
* to an encapsulated Data::Driver::Proxy instance. |
* to an encapsulated Data::Driver::Proxy instance |
329 |
* |
* |
330 |
* @param LocatorMetadataHash array - |
* @param LocatorMetadataHash array - |
331 |
* |
* |
352 |
$metadata = array( |
$metadata = array( |
353 |
//package => 'Data::Driver::Proxy', |
//package => 'Data::Driver::Proxy', |
354 |
//package => 'DataSource::Proxy::XMLRPC', |
//package => 'DataSource::Proxy::XMLRPC', |
355 |
//package => 'DataSource::GenericDataSource', |
//package => 'DataSource::Generic', |
356 |
//package => 'DesignPattern::RemoteProxy', |
//package => 'DesignPattern::RemoteProxy', |
357 |
Host => RPC_HOSTNAME, |
Host => RPC_HOSTNAME, |
358 |
Port => RPC_PORT, |
Port => RPC_PORT, |