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joko |
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<?php |
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/** |
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* This file contains the GenericDataSource child class |
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* @author Andreas Motl <andreas.motl@ilo.de> |
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joko |
1.2 |
* @package org.netfrag.glib |
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* @name DataSource::Generic |
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joko |
1.1 |
* |
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*/ |
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/** |
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joko |
1.6 |
* <b>Cvs-Log:</b> |
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* |
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* <pre> |
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joko |
1.16 |
* $Id: Generic.php,v 1.15 2003/04/06 04:46:33 joko Exp $ |
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joko |
1.2 |
* |
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* $Log: Generic.php,v $ |
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joko |
1.16 |
* Revision 1.15 2003/04/06 04:46:33 joko |
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* renamed linking function |
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* mozilla fixes |
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* |
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joko |
1.15 |
* Revision 1.14 2003/04/04 21:19:21 joko |
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* modified exception handling (enhanced, purged redundant code) |
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* |
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joko |
1.14 |
* Revision 1.13 2003/04/04 02:37:14 jonen |
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* _query[action] == write |
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* |
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jonen |
1.13 |
* Revision 1.12 2003/03/29 08:00:48 joko |
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* modified ErrorBoxing |
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* |
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joko |
1.12 |
* Revision 1.11 2003/03/28 06:45:26 joko |
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* VERBOSE mode |
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* |
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joko |
1.11 |
* Revision 1.10 2003/03/28 03:01:02 joko |
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* more fancy debugging-output |
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* |
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joko |
1.10 |
* Revision 1.9 2003/03/27 16:24:26 jonen |
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* + mugled namespace |
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* + added enhanced 'queryData' |
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* |
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jonen |
1.9 |
* Revision 1.8 2003/03/20 07:22:14 jonen |
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* + modified case 'object' to 'objects' |
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* (cause its loads all *objects* of a given classname) |
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* |
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jonen |
1.8 |
* Revision 1.7 2003/03/11 01:43:00 joko |
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* + fixed metadata for phpDocumentor |
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* |
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joko |
1.7 |
* Revision 1.6 2003/03/11 01:22:25 joko |
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* + fixed metadata for phpDocumentor |
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* |
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joko |
1.6 |
* Revision 1.5 2003/03/11 00:12:49 joko |
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* + fixed metadata for phpDocumentor |
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* |
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joko |
1.5 |
* Revision 1.4 2003/03/10 23:25:03 joko |
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* + fixed metadata for phpDocumentor |
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* |
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joko |
1.4 |
* Revision 1.3 2003/03/09 15:50:36 joko |
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* + additional metadata for Autodia |
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* |
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joko |
1.3 |
* Revision 1.2 2003/03/05 17:28:43 joko |
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* updated docu (phpDocumentor testing....) |
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* |
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joko |
1.2 |
* Revision 1.1 2003/03/05 12:04:00 joko |
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* + initial commit, from GenericDataSource |
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joko |
1.1 |
* |
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* Revision 1.3 2003/03/03 21:24:18 joko |
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* now based on DesignPattern::RemoteProxy |
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* |
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* Revision 1.2 2003/03/02 01:05:13 joko |
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* - purged old code |
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* |
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* Revision 1.1 2003/03/01 21:47:15 joko |
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* renamed from AbstractDataSource.inc |
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* |
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* Revision 1.1 2003/03/01 20:17:15 joko |
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* renamed from GenericDataSource.inc |
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* replaced '_proxy' through '_handler' to better associate the ability to act as a generic dispatcher handler |
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* |
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* Revision 1.3 2003/03/01 15:36:11 joko |
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* + debugging |
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* + renamed some methods regarding new proposal (build_handler_options, fetch_result, etc.) |
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* |
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* Revision 1.2 2003/03/01 04:50:27 joko |
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* encapsulated all output into tracing mode |
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* disabled tracing |
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* |
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* Revision 1.1 2003/03/01 03:10:40 joko |
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* + initial commit |
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1.6 |
* </pre> |
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1.1 |
* |
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*/ |
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/** |
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* This requires the MemoryDataSource base class |
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* |
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*/ |
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// V1: compile-time-include, stable since years ;-) |
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//include_once($phphtmllib."/widgets/data_source/MemoryDataSource.inc"); |
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// V2: runtime-load proposal, more flexible |
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// loadModule('MemoryDataSource', 'inc'); // doesn't work (would do if basepath of module is in libpath) |
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// loadModule($phphtmllib . '::widgets::data_source::MemoryDataSource', 'inc'); // works (by accident) |
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// loadModule($phphtmllib . "/widgets/data_source/MemoryDataSource", "inc"); // works (should be stable) |
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// loadModule($phphtmllib . "/widgets/data_source/MemoryDataSource.inc", null); // works (should be stable) |
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/** |
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* Have to have PEAR and DB included |
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* the pear dir must be in the |
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* include path. |
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*/ |
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// require_once("PEAR.php"); // FIXME: what about PEAR::XML::RPC? |
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// require_once("DB.php"); |
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1.2 |
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loadModule('DesignPattern::Proxy'); |
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loadModule('DesignPattern::TransparentProxy'); |
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loadModule('DesignPattern::RemoteProxy'); |
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//class GenericDataSource extends MemoryDataSource { |
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//class GenericDataSource extends DesignPattern_Proxy { |
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//class GenericDataSource extends DesignPattern_RemoteProxy { |
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//class GenericDataSource extends DesignPattern_TransparentProxy { |
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//class GenericDataSource extends MemoryDataSource { |
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//loadModule("DataSource::Proxy::Memory"); |
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//class GenericDataSource extends DataSource_Proxy_Memory { |
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//class DataSource_GenericDataSource extends DataSource_Proxy_Memory { |
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//class DataSource_GenericDataSource extends DesignPattern_Proxy { |
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//class DataSource_GenericDataSource extends DataSource_Proxy_Memory { |
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// now independent!!! new class-inheritance-tree possible now! |
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// solved by having an Adapter *and* a Proxy here! |
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//class GenericDataSource { |
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loadModule('DesignPattern::AdapterProxy'); |
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joko |
1.1 |
/** |
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* This GenericDataSource child class is *completely* independent |
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* of a specific storage implementation and intended to be a wrapper |
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joko |
1.2 |
* class on the way from phpHtmlLib to Xyz. <br> |
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1.1 |
* ("Yyz" gets represented by Data::Storage by now.....) |
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* |
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* GenericDataSource interacts with an intermediate "proxy" object |
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1.2 |
* (e.g. Data::Driver::Proxy) when doing queries. <br> |
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* <pre> |
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1.1 |
* Don't mix this up with a persistent database handle which gets |
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* reused each and every time for different queries. |
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* Here *is* a new instance of Data::Driver::Proxy for *each* query. |
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1.2 |
* </pre> |
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joko |
1.1 |
* |
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* But the point is: Caching! The actual *data* isn't read redundant! |
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* |
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joko |
1.2 |
* <pre> |
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* --- snipped into here from above --- |
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* that may use arbitrary code modules as database handlers. |
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* It's aims are to get together: |
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* o phpHtmlLibs "source-handlers" |
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* o PEAR's database handlers |
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* o custom ones (e.g. Data::Driver::Proxy object, which talks to a remote rpc server) |
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* --- snipped into here from above --- |
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* </pre> |
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* |
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joko |
1.7 |
* <p> |
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1.1 |
* !!!!!! refactor this to Data::Driver::Proxy !!!!!! <----------------- |
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* |
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* Data::Driver::Proxy instantiates "handlers" below itself |
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* which act as encapsulated workers to actually do the stuff to do. |
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* It can cache data for "disconnected mode" using the |
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* php PEAR DB abstraction objects. |
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* One worker already implemented is Data::Driver::RPC::Remote, which |
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* talks to a RPC::XML server (todo: talk SOAP!) using PEAR::XML::RPC. |
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* |
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1.2 |
* <pre> |
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1.1 |
* --- refactored here, but: redundant somehow --- |
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* Data::Driver::Proxy uses a PEAR XML::RPC object to actually |
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* talk HTTP and serialize data chunks to and from XML, |
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* but adds some caching to this "process of fetching data from a remote side". |
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* It "proxies" arbitrary data chunks a) inside a native php4 session, |
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* b) by talking to a rdbms (single proxy-table) or c) [TODO] using PEAR::Cache. |
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* --- refactored here, but: redundant somehow --- |
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joko |
1.2 |
* </pre> |
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joko |
1.1 |
* |
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* !!!!!! refactor this to Data::Driver::Proxy !!!!!! <----------------- |
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joko |
1.7 |
* </p> |
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joko |
1.1 |
* |
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* |
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joko |
1.7 |
* <p> |
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joko |
1.2 |
* <b>How to use?</b> |
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1.1 |
* |
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* Pass an array holding "locator metadata" to the constructor. |
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* GenericDataSource takes care of the rest. |
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* |
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joko |
1.7 |
* <pre> |
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1.1 |
* Pass an array to the constructor: (e.g.) |
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* |
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* 1. doing rpc-calls.... |
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1.2 |
* <code> |
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1.1 |
* $locator = array( |
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* type => 'rpc', |
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* metadata => array( Host => 'localhost', Port => '8765' ), |
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* ); |
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joko |
1.3 |
* $source = ne w GenericDataSource($locator); |
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joko |
1.1 |
* $this->set_data_source( &$source ); |
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joko |
1.2 |
* </code> |
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* |
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* 2. [proposal] common datahandles.... |
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* <code> |
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* $locator = array( |
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* type => 'mysql', |
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* dsn => 'known dsn markup', |
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* ); |
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1.3 |
* $source = ne w GenericDataSource($locator); |
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joko |
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* $this->set_data_source( &$source ); |
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1.2 |
* </code> |
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1.7 |
* </pre> |
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* </p> |
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* |
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1.1 |
* |
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1.2 |
* @link http://www.netfrag.org/~joko/ |
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joko |
1.1 |
* @author Andreas Motl <andreas.motl@ilo.de> |
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joko |
1.2 |
* |
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* @link http://www.netfrag.org/~jonen/ |
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joko |
1.1 |
* @author Sebastian Utz <seut@tunemedia.de> |
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joko |
1.2 |
* |
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1.1 |
* @copyright (c) 2003 - All Rights reserved. |
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joko |
1.2 |
* |
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* @link http://www.gnu.org/licenses/lgpl.txt |
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joko |
1.1 |
* @license GNU LGPL (GNU Lesser General Public License) |
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* |
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* |
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joko |
1.2 |
* @package org.netfrag.glib |
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* @subpackage DataSource |
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* @name DataSource::Generic |
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joko |
1.1 |
* |
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joko |
1.4 |
* @todo this: |
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joko |
1.5 |
* o mungle this to be able to be wrapped around phpHtmlLib's own storage-handles |
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* o implement another Data::Driver::Proxy container |
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joko |
1.1 |
* |
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joko |
1.5 |
* <pre> |
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joko |
1.4 |
* !!!!!!!! THIS IS THE PROBLEM !!!!!!!! |
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* !!!!!!!! here is it where we have to break inheritance again !!!!!!!! |
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* |
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* THE CONFLICT: Beeing in phpHtmlLib *and* DesignPattern::TransparentProxy |
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* inheritance trees at the same time, which is *not* possible at |
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* declare-time. We *do* need some runtime-infrastructure to solve this! |
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* |
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* TODO: move build- and check-locator stuff from ObjectList to this place!!! |
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* |
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* ABOUT: |
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* 1. otherwhere: WebApp - scope: |
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* x handles page vs. block vs. widget; dispatches MVC-View |
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* 2. here: DataSource - scope: |
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* x handles bridge to frameworks (e.g. phpHtmlLib) vs. actual data driver libs (PEAR, etc.)) |
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* o clean implementation using a DesignPattern::AdapterProxy |
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joko |
1.5 |
* </pre> |
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joko |
1.4 |
* |
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* |
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*/ |
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1.1 |
class DataSource_Generic extends DesignPattern_AdapterProxy { |
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// !!!!!!!! here is it where we have to break inheritance again !!!!!!!! |
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// !!!!!!!! THIS IS THE PROBLEM !!!!!!!! |
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/** |
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* This var holds the locator metadata hash |
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* that is used to feed metadata to a per-query-instance |
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* of an Adapter object. |
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* |
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*/ |
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//var $_locator = NULL; |
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/** |
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* This var holds the locator metadata hash |
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* which is built from some predefined rules |
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* using metadata from $_options and some |
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* other presets. |
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* |
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* See '_buildLocator' which acts as a dispatcher |
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1.16 |
* depending on $_options[transport]. |
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1.1 |
* (main dispatching level) |
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* |
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* The structure of a full blown locator looks like this: |
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* |
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* $locator = array( |
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* type => '<your type specifying the datasource-type>', |
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* metadata => array( |
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* ... your arbitrary deep metadata structure ... |
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* ), |
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* [dsn => '<your dsn markup>'], |
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* ); |
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* |
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* Example 1 - data is inside a rdbms, using a dsn to connect to it: |
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* $locator = array( |
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* type => 'sql', |
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* dsn => 'mysql://username:password@localhost/database', |
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* ); |
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* |
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* Example 2 - data is inside an odbms, reachable by doing remote procedure calls (rpc): |
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* $locator = array( |
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* type => 'rpc', |
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* metadata => array( |
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* package => 'Data::Driver::Proxy', |
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* Host => 'localhost', |
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* Port => '8765', |
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* ) |
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* ); |
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* |
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*/ |
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var $_locator = NULL; |
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/** |
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* This var holds the module information required to |
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* create instances of a Proxy and an Adapter. |
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* Information might get extracted from a |
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* DataSource::Locator instance. |
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* |
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* --- A skeleton: |
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* |
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* $this->_modules = array( |
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* _proxy => array( _id => '', _module => '', _options = array(), _instance => &$obj), |
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* _adapter => array( _id => '', _module => '', _options = array(), _instance => &$obj), |
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* ); |
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* |
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* |
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* --- An example: |
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* |
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* $this->_modules = array( |
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* _proxy => array( _id => 'rpc', _module => 'DesignPattern::RemoteProxy', _instance => &$obj), |
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* _adapter => array( _id => 'phpHtmlLib', _module => 'DataSource::Adapter::phpHtmlLib::DataListSource', _instance => &$obj), |
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* ); |
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* |
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* |
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*/ |
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//var $_modules = NULL; |
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/** |
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* This var holds the query hash |
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* that is used to feed as query to a per-query-instance |
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* of a Data::Driver::Proxy object. |
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* |
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*/ |
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var $_query = NULL; |
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/** |
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* this holds the query result from the |
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* Data::Driver::Proxy->queryXyz() call |
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* |
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*/ |
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var $_result = NULL; |
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/** |
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* The constructor is used to pass in the |
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* locator metadata hash. |
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* |
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* @param LocatorMetadataHash array - layout: array( type => '', metadata => '', dsn => '' ) |
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* @param Query array - layout: array( type => '', metadata => '', dsn => '' ) |
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*/ |
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function DataSource_Generic( &$locator, $query ) { |
373 |
|
|
|
374 |
|
|
// copy parameter from query to locator |
375 |
joko |
1.16 |
//$this->_locator->merge_to($this->_locator, array( datasource_type => $query[transport] ), '_'); |
376 |
|
|
//$this->_locator->_datasource_type = $query[transport]; |
377 |
|
|
//$locator[_datasource_type] = $query[transport]; |
378 |
joko |
1.1 |
|
379 |
joko |
1.3 |
/** |
380 |
|
|
* <!-- Autodia --> |
381 |
|
|
* can do: (this is metadata supplied for Autodia, don't delete!) |
382 |
|
|
* $this->_locator = new DataSource_Locator() |
383 |
|
|
* |
384 |
|
|
*/ |
385 |
|
|
|
386 |
joko |
1.1 |
// build master locator |
387 |
joko |
1.16 |
$this->_locator = php::mkComponent('DataSource::Locator', $locator, array( datasource_type => $query[transport] ) ); |
388 |
joko |
1.1 |
//exit; |
389 |
|
|
//$this->_locator = php::mkComponent('DataSource::Locator'); |
390 |
|
|
|
391 |
|
|
$this->_locator->check(); |
392 |
|
|
|
393 |
|
|
// trace |
394 |
|
|
//print "locator-obj: " . Dumper($this->_locator); |
395 |
|
|
//print "locator-data: " . Dumper($locator_data); |
396 |
|
|
//exit; |
397 |
|
|
|
398 |
|
|
|
399 |
|
|
|
400 |
|
|
/* |
401 |
|
|
$this->_modules = array( |
402 |
|
|
_proxy => array( _id => $locator->_datasource_type ), |
403 |
|
|
_adapter => array( _id => $locator->_adapter_type ), |
404 |
|
|
); |
405 |
|
|
*/ |
406 |
|
|
|
407 |
|
|
//$this->set_locator( $locator ); |
408 |
|
|
$this->set_query( $query ); |
409 |
|
|
|
410 |
|
|
|
411 |
|
|
|
412 |
|
|
/* |
413 |
|
|
// V1: |
414 |
|
|
// pre-flight: establish and check locator metadata |
415 |
|
|
$this->_buildLocator(); |
416 |
|
|
$this->_checkLocator(); |
417 |
|
|
*/ |
418 |
|
|
|
419 |
|
|
|
420 |
|
|
|
421 |
|
|
// pre-flight: check locator metadata |
422 |
|
|
//$locator->build(); |
423 |
|
|
if (!$this->_locator->check()) { |
424 |
joko |
1.16 |
user_error("DataSource::Generic: locator-check failed." . "<br/>" . "Locator was: " . Dumper($this->_locator) ); |
425 |
|
|
//exit; |
426 |
|
|
return; |
427 |
joko |
1.1 |
} |
428 |
|
|
|
429 |
|
|
//exit; |
430 |
|
|
|
431 |
|
|
|
432 |
joko |
1.3 |
/** |
433 |
|
|
* <!-- Autodia --> |
434 |
|
|
* can do: (this is metadata supplied for Autodia, don't delete!) |
435 |
|
|
* $proxy = new DesignPattern_RemoteProxy() |
436 |
|
|
* |
437 |
|
|
*/ |
438 |
|
|
|
439 |
|
|
|
440 |
joko |
1.1 |
// --- Proxy selector/dispatcher ... |
441 |
|
|
|
442 |
|
|
switch ($this->_locator->_datasource_type) { |
443 |
|
|
case 'rpc': |
444 |
|
|
//$locator_data = $this->_locator->get_metadata(); |
445 |
|
|
//$this->_modules[_proxy][_options] = array( locator => $this->_locator, query => $query ); |
446 |
|
|
//$this->_modules[_proxy][_module] = 'DataSource::Proxy::XMLRPC'; |
447 |
|
|
|
448 |
|
|
//$this->_modules[_proxy][_module] = 'DesignPattern::RemoteProxy'; |
449 |
|
|
//$this->_modules[_proxy][_options] = $locator_data; |
450 |
|
|
|
451 |
|
|
//$this->set_component_name('DesignPattern::RemoteProxy'); |
452 |
|
|
//$this->set_component_options($locator_data); |
453 |
|
|
|
454 |
|
|
$this->set_component_name('DesignPattern::RemoteProxy'); |
455 |
|
|
|
456 |
|
|
break; |
457 |
|
|
default: |
458 |
|
|
user_error("Site::GenericPage: no Proxy could be selected!"); |
459 |
|
|
break; |
460 |
|
|
} |
461 |
|
|
|
462 |
|
|
|
463 |
|
|
|
464 |
|
|
/* |
465 |
|
|
// V1: |
466 |
|
|
// make up dummy args by now |
467 |
|
|
$args = array( |
468 |
|
|
adapter => 'phpHtmlLib', |
469 |
|
|
); |
470 |
|
|
*/ |
471 |
|
|
|
472 |
|
|
// V2: now propagated from caller! |
473 |
|
|
|
474 |
|
|
//print Dumper(array( locator => $locator, query => $query )); |
475 |
|
|
//exit; |
476 |
|
|
|
477 |
|
|
//$this->create_adapter($this->module, $this->function, $this->arguments); |
478 |
|
|
//$this->set_handler( $this->get_adapter() ); |
479 |
|
|
|
480 |
|
|
|
481 |
|
|
// --- Adapter selector/dispatcher ... |
482 |
|
|
// ... resolves this._modules.adapter._id to this._modules.adapter._module |
483 |
|
|
|
484 |
|
|
switch ($locator->_adapter_type) { |
485 |
|
|
case 'phpHtmlLib': |
486 |
|
|
//$adapter_arguments = $args[title]; |
487 |
|
|
|
488 |
jonen |
1.9 |
$this->set_adapter_module('DataSource::Adapter::phpHtmlLib::DataSource'); |
489 |
joko |
1.1 |
|
490 |
|
|
// in order to let the Adapter communicate with the Proxy, |
491 |
|
|
// instantiate a wrapper method in a third namespace via |
492 |
|
|
// Exporter::export_symbol(from, to) |
493 |
|
|
$this->set_adapter_options($this); |
494 |
|
|
|
495 |
|
|
|
496 |
|
|
break; |
497 |
|
|
default: |
498 |
joko |
1.16 |
user_error("DataSource::Generic: no Adapter could be selected!"); |
499 |
joko |
1.1 |
break; |
500 |
|
|
} |
501 |
|
|
|
502 |
|
|
|
503 |
|
|
|
504 |
|
|
// --- module instantiation - Proxy and Adapter |
505 |
|
|
|
506 |
|
|
//user_error("handle proxy here!"); |
507 |
|
|
//$this->create_proxy(); |
508 |
|
|
|
509 |
|
|
//print Dumper($this); |
510 |
|
|
|
511 |
|
|
//print "this: " . Dumper($this); |
512 |
|
|
|
513 |
|
|
// V1: |
514 |
|
|
/* |
515 |
|
|
$proxy = php::mkComponent($this->_modules[_proxy][_module], $this->_modules[_proxy][_options]); |
516 |
|
|
print "proxy: " . Dumper($proxy); |
517 |
|
|
//exit; |
518 |
|
|
*/ |
519 |
|
|
|
520 |
|
|
// V2: |
521 |
|
|
/* |
522 |
|
|
$resultHandle = mkObject('DesignPattern::RemoteProxy', $cache_key, array( key => 1, command => $command, query => $query, remote => 1, rpcinfo => $rpcinfo, cache => array( db => 0, session => 1 ) ) ); |
523 |
|
|
$result = $resultHandle->getAttributes(); |
524 |
|
|
return $result; |
525 |
|
|
*/ |
526 |
|
|
|
527 |
|
|
// V3: |
528 |
|
|
// $this->set_handler( $proxy ); |
529 |
|
|
|
530 |
|
|
// V4: use _component_name & _component_options (proposal from GenericPage) |
531 |
|
|
// $this->_component_name = ... |
532 |
|
|
// $this->create_handler(); |
533 |
|
|
|
534 |
joko |
1.3 |
|
535 |
|
|
/** |
536 |
|
|
* <!-- Autodia --> |
537 |
|
|
* can do: (this is metadata supplied for Autodia, don't delete!) |
538 |
|
|
* $adapter = new DataSource_Adapter_phpHtmlLib_DataListSource() |
539 |
|
|
* |
540 |
|
|
*/ |
541 |
joko |
1.1 |
|
542 |
|
|
// V1: |
543 |
|
|
//$this->create_adapter($adapter_module, $this->function, $this->arguments); |
544 |
|
|
|
545 |
|
|
// V2: FIXME - better use V1? |
546 |
|
|
$adapter = php::mkComponent($this->get_adapter_module(), $this->get_adapter_options()); |
547 |
|
|
$this->set_adapter($adapter); |
548 |
|
|
|
549 |
|
|
|
550 |
|
|
|
551 |
|
|
|
552 |
|
|
} |
553 |
|
|
|
554 |
|
|
function make_adapter_transparent() { |
555 |
|
|
|
556 |
|
|
// ... known from Site::Adapter::php::Class: |
557 |
|
|
|
558 |
|
|
// At this place the Adapter becomes a Proxy. |
559 |
|
|
// This functionality currently correlates to the |
560 |
|
|
// name of our ancestor, DesignPattern::AdapterProxy. |
561 |
|
|
// FIXME: move this code to its namespace!!! |
562 |
|
|
// FIXME: rename to set_proxy... |
563 |
|
|
|
564 |
|
|
// The reason this has to occour here is required |
565 |
|
|
// by the TransparentProxy to actually make the |
566 |
|
|
// _handler (_proxy) transparent later.... |
567 |
|
|
//$this->set_proxy( $this->get_adapter() ); |
568 |
|
|
} |
569 |
|
|
|
570 |
|
|
/** |
571 |
|
|
* Set the metadata information |
572 |
|
|
* (a DataSource::Locator) we will use |
573 |
|
|
* to build encapsulated instances |
574 |
|
|
* of both a Proxy and an Adapter. |
575 |
|
|
* |
576 |
|
|
* @param LocatorMetadataHash array - |
577 |
|
|
* |
578 |
|
|
*/ |
579 |
|
|
function set_metadata( &$locator ) { |
580 |
|
|
$this->_locator = &$locator; |
581 |
|
|
} |
582 |
|
|
|
583 |
|
|
function &get_metadata() { |
584 |
|
|
return $this->_locator; |
585 |
|
|
} |
586 |
|
|
|
587 |
|
|
|
588 |
|
|
/** |
589 |
|
|
* Set the query metadata hash we will feed *completely* |
590 |
|
|
* to an encapsulated Proxy instance. |
591 |
|
|
* |
592 |
|
|
* @param QueryDeclaration array - |
593 |
|
|
* |
594 |
|
|
*/ |
595 |
|
|
function set_query( $query ) { |
596 |
|
|
$this->_query = $query; |
597 |
|
|
} |
598 |
|
|
|
599 |
|
|
/** |
600 |
|
|
* Issue remote/proxy call |
601 |
|
|
* Stolen from Application_AbstractBackend::_remote_method (RefactoringProposal?) |
602 |
|
|
* Tweaked a bit: proxy package now taken from $this->_handler_name |
603 |
|
|
* |
604 |
|
|
* Create a new instance of a proxy and store it for later reuse. |
605 |
|
|
* Read the locator metadata hash and create |
606 |
|
|
* the proxy handler instance using passed-in name. |
607 |
|
|
* |
608 |
|
|
* @param string - $proxy_name (namespaced classname - perl syntax - e.g.: Data::Driver::Proxy) |
609 |
|
|
* |
610 |
|
|
*/ |
611 |
|
|
function datasource_handler_call() { |
612 |
|
|
|
613 |
|
|
|
614 |
|
|
// 1. read args and build cache key |
615 |
|
|
|
616 |
|
|
$arg_list = func_get_args(); |
617 |
|
|
$command = array_shift($arg_list); |
618 |
|
|
$cache_key = join("-", array(session_id(), $command, join('_', $arg_list) )); |
619 |
|
|
//print "cache_key: $cache_key<br>"; |
620 |
|
|
|
621 |
|
|
// FIXME: what if arg_list still contains more elements after doing this? |
622 |
|
|
$query = array_shift($arg_list); |
623 |
|
|
|
624 |
|
|
// 2. prepare proxy-options (read from locator) |
625 |
|
|
|
626 |
|
|
//print "this: " . Dumper($this); |
627 |
|
|
//exit; |
628 |
|
|
|
629 |
|
|
// read from locator metadata |
630 |
|
|
//$proxy_name = $this->_locator[metadata][package]; |
631 |
|
|
|
632 |
|
|
// V1: |
633 |
|
|
//$rpcinfo = array( Host => $this->_locator[metadata][Host], Port => $this->_locator[metadata][Port] ); |
634 |
|
|
|
635 |
|
|
// V2: |
636 |
|
|
$rpcinfo = $this->_locator->get_metadata(); |
637 |
|
|
|
638 |
|
|
// FIXME! implement this into Data::Driver::RPC::Remote! |
639 |
|
|
//$rpcinfo[to_latin] = 1; |
640 |
|
|
|
641 |
|
|
// FIXME! patch query |
642 |
|
|
if (sizeof($query) == 1) { |
643 |
|
|
$query = $query[0]; |
644 |
|
|
} |
645 |
|
|
|
646 |
|
|
//print "query: " . Dumper($query); |
647 |
|
|
|
648 |
|
|
// !!! use DesignPattern::Proxy here !!! |
649 |
|
|
// $proxy = new DesignPattern_Proxy($proxy_name, ...) |
650 |
|
|
// or: |
651 |
|
|
// $proxy = mkObject('DesignPattern::Proxy'); |
652 |
|
|
// $this->set_handler( $proxy ); |
653 |
|
|
// or: |
654 |
|
|
// $proxy = mkObject('DesignPattern::Proxy'); |
655 |
|
|
// $proxy-> |
656 |
|
|
// $this->set_handler( $proxy ); |
657 |
|
|
|
658 |
|
|
|
659 |
|
|
|
660 |
|
|
//$this->set_component_name( $proxy_name ); |
661 |
|
|
$this->set_component_options( $cache_key, array( key => 1, command => $command, query => $query, remote => 1, rpcinfo => $rpcinfo, cache => array( db => 0, session => 1 ) ) ); |
662 |
|
|
//print Dumper($this); |
663 |
|
|
//exit; |
664 |
|
|
|
665 |
|
|
$this->create_proxy(); |
666 |
|
|
|
667 |
|
|
//print Dumper($this); |
668 |
|
|
//exit; |
669 |
|
|
|
670 |
|
|
/* |
671 |
|
|
// -------------------- clone this & modify ---------- |
672 |
|
|
$proxy = mkObject($proxy_name, $cache_key, array( key => 1, command => $command, query => $query, remote => 1, rpcinfo => $rpcinfo, cache => array( db => 0, session => 1 ) ) ); |
673 |
|
|
$this->set_handler( $proxy ); |
674 |
|
|
//$result = $resultHandle->getAttributes(); |
675 |
|
|
//return $result; |
676 |
|
|
//$this->_result = $resultHandle->getAttributes(); |
677 |
|
|
//$this->_result = $this->_handler->getAttributes(); |
678 |
|
|
// -------------------- clone this & modify ---------- |
679 |
|
|
*/ |
680 |
|
|
|
681 |
|
|
} |
682 |
|
|
|
683 |
|
|
|
684 |
|
|
function datasource_handler_buildoptions() { |
685 |
|
|
|
686 |
|
|
//print Dumper($this->_query); |
687 |
|
|
//exit; |
688 |
|
|
|
689 |
|
|
// make up a command from metadata |
690 |
|
|
// FIXME: abstract this some more (e.g. via a CommandMapper|Registry) |
691 |
|
|
switch ($this->_query[metatype]) { |
692 |
|
|
case 'data': |
693 |
jonen |
1.9 |
$command = 'queryData'; |
694 |
jonen |
1.13 |
|
695 |
jonen |
1.9 |
//$command = 'getObjects'; // FIXME!!! |
696 |
joko |
1.1 |
//$this->_locator->set_option('metadata.command', $command); |
697 |
jonen |
1.9 |
/* |
698 |
joko |
1.1 |
$args = array(); |
699 |
|
|
switch ($this->_query[vartype]) { |
700 |
jonen |
1.8 |
case 'objects': |
701 |
joko |
1.1 |
if (!$this->_query[classname]) { |
702 |
jonen |
1.8 |
$msg = "_query[vartype] == 'objects' requires _query[classname]"; |
703 |
joko |
1.16 |
user_error("DataSource::Generic: query_data() - failed: " . $msg); |
704 |
joko |
1.1 |
} |
705 |
|
|
array_push($args, $this->_query[classname]); |
706 |
|
|
break; |
707 |
|
|
} |
708 |
jonen |
1.9 |
*/ |
709 |
|
|
$query_args = array(); |
710 |
|
|
switch ($this->_query[abstract_type]) { |
711 |
|
|
case 'list': |
712 |
|
|
if (!$this->_query[classname]) { |
713 |
|
|
$msg = "_query[vartype] == 'objects' requires _query[classname]"; |
714 |
joko |
1.16 |
user_error("DataSource::Generic: query_data() - failed: " . $msg); |
715 |
jonen |
1.9 |
} |
716 |
|
|
//array_push($query_args, $this->_query[classname]); |
717 |
|
|
$query_args[classname] = $this->_query[classname]; |
718 |
|
|
break; |
719 |
|
|
case 'item': |
720 |
|
|
if (!$this->_query[classname]) { |
721 |
|
|
$msg = "_query[vartype] == 'objects' requires _query[classname]"; |
722 |
joko |
1.16 |
user_error("DataSource::Generic: query_data() - failed: " . $msg); |
723 |
jonen |
1.9 |
} |
724 |
|
|
$query_args[guid] = $this->_query[ident]; |
725 |
|
|
$query_args[classname] = $this->_query[classname]; |
726 |
|
|
break; |
727 |
jonen |
1.13 |
} |
728 |
|
|
if($this->_query[action] == 'write') { |
729 |
|
|
$query_args[action] = $this->_query[action]; |
730 |
|
|
$query_args[data] = $this->_query[data]; |
731 |
jonen |
1.9 |
} |
732 |
|
|
$args = array( |
733 |
|
|
'data_type' => $this->_query[abstract_type], |
734 |
|
|
'query_args' => $query_args |
735 |
|
|
); |
736 |
|
|
break; |
737 |
|
|
|
738 |
|
|
// querySchema |
739 |
joko |
1.1 |
case 'schema': |
740 |
jonen |
1.9 |
//print "Testing schema:" . "<br>"; |
741 |
joko |
1.1 |
$command = 'querySchema'; |
742 |
joko |
1.14 |
$args = array( $this->_query[filter] ); |
743 |
joko |
1.1 |
break; |
744 |
joko |
1.16 |
|
745 |
|
|
// remoteMethod |
746 |
|
|
case 'method': |
747 |
|
|
$command = $this->_query[method]; |
748 |
|
|
$args = $this->_query[args]; |
749 |
|
|
break; |
750 |
|
|
|
751 |
joko |
1.1 |
} |
752 |
|
|
|
753 |
joko |
1.16 |
|
754 |
|
|
// FIXME: bad behaviour? |
755 |
|
|
if (!is_array($args)) { $args = array( $args ); } |
756 |
joko |
1.1 |
|
757 |
|
|
/* |
758 |
|
|
$this->_query[rpc_command] = $command; |
759 |
|
|
$this->_query[rpc_args] = $command; |
760 |
|
|
*/ |
761 |
|
|
|
762 |
|
|
// methods!!! |
763 |
|
|
$this->_locator->_call[_method] = $command; |
764 |
|
|
$this->_locator->_call[_arguments] = $args; |
765 |
|
|
|
766 |
|
|
//$adapter = $this->get_adapter(); |
767 |
|
|
|
768 |
|
|
// trace |
769 |
|
|
/* |
770 |
|
|
print Dumper(null, '<b>= = = = = = = = = = = = = = = = = = = = = =</b>'); |
771 |
|
|
print Dumper('datasource_handler_buildoptions', array( |
772 |
|
|
"_locator" => $this->_locator, |
773 |
|
|
"_query" => $this->_query, |
774 |
|
|
"command" => '<b>' . $command . "</b>", |
775 |
|
|
"args" => $args |
776 |
|
|
)); |
777 |
|
|
*/ |
778 |
|
|
|
779 |
|
|
/* |
780 |
|
|
$this->_handler_options = array( |
781 |
|
|
method => $command, |
782 |
|
|
args => $args, |
783 |
|
|
); |
784 |
|
|
*/ |
785 |
|
|
|
786 |
|
|
} |
787 |
|
|
|
788 |
joko |
1.11 |
|
789 |
|
|
|
790 |
joko |
1.1 |
function &fetch_result() { |
791 |
|
|
|
792 |
|
|
$this->datasource_handler_buildoptions(); |
793 |
|
|
|
794 |
joko |
1.11 |
$call = $this->_locator->get_call(); |
795 |
|
|
//print Dumper($call); |
796 |
|
|
|
797 |
joko |
1.1 |
// pre-flight checks |
798 |
joko |
1.11 |
if (!$call[method]) { |
799 |
|
|
$msg = "Remote method is empty, please pass in proper metadata or check configuration."; |
800 |
joko |
1.16 |
user_error("DataSource::Generic: query_data() - failed: " . $msg); |
801 |
joko |
1.1 |
return; |
802 |
|
|
} |
803 |
|
|
|
804 |
|
|
//print "fetch_result: this->_handler=" . Dumper($this->_handler); |
805 |
|
|
|
806 |
|
|
// do remote call here and get result |
807 |
|
|
// FIXME: handle synchronous/asynchronous mode here!!! |
808 |
joko |
1.11 |
$this->datasource_handler_call($call[method], $call[args]); |
809 |
joko |
1.1 |
|
810 |
|
|
|
811 |
|
|
// TODO: ... = $this->poll_handler_result and $this->get_handler_result |
812 |
|
|
$proxy = $this->get_proxy(); |
813 |
|
|
$this->_result = $proxy->getResult(); |
814 |
|
|
//print "result: " . Dumper($this->_result); exit; |
815 |
|
|
|
816 |
|
|
$this->_result_count = sizeof($this->_result); |
817 |
|
|
|
818 |
|
|
// trace |
819 |
joko |
1.11 |
//if (constants::get('VERBOSE') && $this->_debug[notice]) { |
820 |
joko |
1.12 |
if (constants::get('VERBOSE') or constants::get('ERRORS_ONLY')) { |
821 |
joko |
1.1 |
//print "_result = " . Dumper($this->_result); |
822 |
joko |
1.11 |
//print "<div><b><font color=\"darkgreen\">Debug:</font></b> DataSource::Generic->_result_count = <b>" . $this->_result_count . "</b></div>"; |
823 |
|
|
$this->draw_status_box(); |
824 |
joko |
1.1 |
} |
825 |
joko |
1.11 |
|
826 |
joko |
1.1 |
return $this->_result; |
827 |
|
|
|
828 |
|
|
} |
829 |
|
|
|
830 |
joko |
1.11 |
function draw_status_box() { |
831 |
|
|
|
832 |
|
|
static $boxcount; |
833 |
|
|
|
834 |
|
|
$boxcount++; |
835 |
|
|
|
836 |
joko |
1.12 |
$box = container(); |
837 |
|
|
|
838 |
joko |
1.11 |
// box style |
839 |
|
|
$style = container( |
840 |
|
|
html_style("text/css", '.boxlabel_darkgreen { color: darkgreen; font-weight:bold; }'), |
841 |
|
|
html_style("text/css", '.box_dsg { background: #20ab39; color: white; border: 2px black groove; width:640px; padding:10px; margin:40px; }') |
842 |
|
|
); |
843 |
joko |
1.12 |
$box->add( $style ); |
844 |
joko |
1.11 |
|
845 |
|
|
// box content |
846 |
|
|
$statusbox = html_div('box_dsg'); |
847 |
|
|
$statusbox->add( html_b("DataSource::Generic"), html_br() ); |
848 |
|
|
$locatorbox = html_div('box_dsg'); |
849 |
|
|
$locatorbox->set_id("locatorbox_$boxcount"); |
850 |
|
|
$locatorbox->add( Dumper($this->_locator) ); |
851 |
joko |
1.14 |
|
852 |
|
|
// FIXME: ie/mozilla? |
853 |
joko |
1.15 |
//$locatorbox->set_style('display:none;'); |
854 |
|
|
//$locatorbox->set_style('visibility:hidden;'); |
855 |
|
|
// already duplicate inside Tracer!!! |
856 |
|
|
$locatorbox->set_style('visibility:hidden; position:absolute; z-index:1; margin-top:30px; padding:5px;'); |
857 |
joko |
1.11 |
|
858 |
joko |
1.15 |
$statusbox->add( html_span('boxlabel_darkgreen', "Locator:"), link::js_function( 'toggleVisibility', array("locatorbox_$boxcount"), '[show]'), $locatorbox, html_br() ); |
859 |
joko |
1.11 |
$call = $this->_locator->get_call(); |
860 |
|
|
$statusbox->add( html_span('boxlabel_darkgreen', "Method:"), $call[method], html_br() ); |
861 |
|
|
if (sizeof($call[args])) { |
862 |
|
|
$statusbox->add( html_span('boxlabel_darkgreen', "Arguments:"), Dumper($call[args]), html_br() ); |
863 |
|
|
} |
864 |
|
|
$statusbox->add( html_span('boxlabel_darkgreen', "Count:"), $this->get_result_count(), html_br() ); |
865 |
joko |
1.12 |
$box->add( $statusbox ); |
866 |
|
|
|
867 |
joko |
1.14 |
//print $box->render(); |
868 |
|
|
trace( $box ); |
869 |
joko |
1.11 |
|
870 |
|
|
} |
871 |
|
|
|
872 |
joko |
1.1 |
|
873 |
|
|
function &query_data() { |
874 |
|
|
//print "query!<br/>"; |
875 |
|
|
return $this->fetch_result(); |
876 |
|
|
//$this->handle_result(); |
877 |
|
|
} |
878 |
|
|
|
879 |
|
|
function query_schema() { |
880 |
|
|
user_error("FIXME: query_schema"); |
881 |
|
|
// $this->datasource_handler_call( ... ); |
882 |
|
|
} |
883 |
|
|
|
884 |
|
|
function &get_result() { |
885 |
|
|
return $this->_result; |
886 |
joko |
1.11 |
} |
887 |
|
|
|
888 |
|
|
function get_result_count() { |
889 |
|
|
return $this->_result_count; |
890 |
joko |
1.1 |
} |
891 |
|
|
|
892 |
|
|
} |
893 |
|
|
|
894 |
|
|
?> |