/[cvs]/nfo/php/libs/org.netfrag.glib/DataSource/Locator.php
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revision 1.3 by joko, Wed Mar 5 15:21:54 2003 UTC revision 1.4 by joko, Wed Mar 5 15:26:23 2003 UTC
# Line 19  Line 19 
19   * $Id$   * $Id$
20   *   *
21   * $Log$   * $Log$
22     * Revision 1.4  2003/03/05 15:26:23  joko
23     * updated docu (phpDocumentor testing....)
24     *
25   * Revision 1.3  2003/03/05 15:21:54  joko   * Revision 1.3  2003/03/05 15:21:54  joko
26   * updated docu (phpDocumentor testing....)   * updated docu (phpDocumentor testing....)
27   *   *
# Line 34  Line 37 
37  /**  /**
38   * It helps DataSource::Generic working in different "operation modes".   * It helps DataSource::Generic working in different "operation modes".
39   *   *
40   * o Pass-Through-Reference: php Object will get passed through all layers   * - Pass-Through-Reference: php Object will get passed through all layers
41   * o Pass-Through-Memory: reference to a memory area will get used   * - Pass-Through-Memory: reference to a memory area will get used
42   * + Build-Locator: build locator from datasource-type and adapter-type   * + Build-Locator: build locator from datasource-type and adapter-type
43   * o Use-Locator: directly use DataSource::Locator instance passed in   * - Use-Locator: directly use DataSource::Locator instance passed in
44   * o Merge-Locators: merge metadata of two or more DataSource::Locator instances   * - Merge-Locators: merge metadata of two or more DataSource::Locator instances
45   * o Build-AutoLocator: use global constants making up our metadata   * - Build-AutoLocator: use global constants making up our metadata
46   *   *
47   *   * <b>It can/should contain:</b>
48   * <b>It can/should contain (flexible, just some parameters are required for each operation mode)</b>   * (flexible, just some parameters are required for each operation mode)
49   *   * - an oldschool "dsn"-string (e.g. for rdbms-connection via PEAR)
  * o an oldschool "dsn"-string (e.g. for rdbms-connection via PEAR)  
50   * + name of a Proxy module to use to *wrap/hide* the connection/transport-layer   * + name of a Proxy module to use to *wrap/hide* the connection/transport-layer
51   *   (e.g. DataSource::Proxy::XMLRPC via DesignPattern::RemoteProxy)   *   (e.g. DataSource::Proxy::XMLRPC via DesignPattern::RemoteProxy)
52   * + metadata (a hash) directly describing *where* to connect to (e.g. 'Host', 'Port')   * + metadata (a hash) directly describing *where* to connect to (e.g. 'Host', 'Port')
53   * o an instance of an already instantiated arbitrary datasource handler (e.g. 'source')   * - an instance of an already instantiated arbitrary datasource handler (e.g. 'source')
54   *   this will get propagated (pass-through-mode)   *   this will get propagated (pass-through-mode)
55   * + a datasource-type (of 'rpc|mysql|csv-file|xml-file')   * - a datasource-type (of 'rpc|mysql|csv-file|xml-file')
56   *   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*
57   *   by the DataSource::Generic at runtime   *   by the DataSource::Generic at runtime
58   * + an adapter-type (of 'phpHtmlLib|pear')   * + an adapter-type (of 'phpHtmlLib|pear')
59   *   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*
60   *   by the DataSource::Generic at runtime   *   by the DataSource::Generic at runtime
61   * o names of global constants where to find these informations   * - names of global constants where to find these informations
62   * o datasource-type ('rpc|csv-file|...') <-> datasource-family ('orm|rdbms|odbms')   * - datasource-type ('rpc|csv-file|...') <-> datasource-family ('orm|rdbms|odbms')
63   *   *
64   *   *
65   * --- It can do   * <b>It can do</b>
66   * + builds a larger locator from a minimum of information passed in via constructor-arguments   * + builds a larger locator from a minimum of information passed in via constructor-arguments
67   * o direct fallback mode to some predefined constant names if locator is empty and above method fails   * o direct fallback mode to some predefined constant names if locator is empty and above method fails
68   * o direct fallback mode to some predefined values if just *everything* fails   * o direct fallback mode to some predefined values if just *everything* fails
69   *   *
70   *   *
71   * --- How to use?   * <b>How to use?</b>
72   *   *
73   * Pass an array holding "locator metadata" to the constructor.   * Pass an array holding "locator metadata" to the constructor.
74   * This module takes care of the rest.   * This module takes care of the rest.
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