Difference between revisions of "Remote Data Connectivity"

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(Sending SQL Queries and Statements)
(Navigating the Result Set)
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=====Navigating the Result Set=====
 
=====Navigating the Result Set=====
 
* [[RDO_FETCH_ROW()|rdo_fetch_row()]] - return the next row from a result set as an object
 
* [[RDO_FETCH_ROW()|rdo_fetch_row()]] - return the next row from a result set as an object
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<pre>
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object = rdo_fetch_row(resultset as object)
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</pre>
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* [[RDO_FETCH_OBJECT()|rdo_fetch_object()]] - return the next row from a result set as an object
 
* [[RDO_FETCH_OBJECT()|rdo_fetch_object()]] - return the next row from a result set as an object
 +
 +
<pre>
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object = rdo_fetch_object(resultset as object)
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</pre>
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* [[RDO_DATA_SEEK()|rdo_data_seek()]] - move the internal row pointer
 
* [[RDO_DATA_SEEK()|rdo_data_seek()]] - move the internal row pointer
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<pre>
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numeric = rdo_data_seek(resultset as object, row as numeric)
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</pre>
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* [[RDO_FIELD_SEEK()|rdo_field_seek()]] - jump to a specified field in a result set
 
* [[RDO_FIELD_SEEK()|rdo_field_seek()]] - jump to a specified field in a result set
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<pre>
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numeric = rdo_field_seek(resultset as object, column as numeric)
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</pre>
  
 
=====Result Set Information=====
 
=====Result Set Information=====

Revision as of 15:18, 28 July 2010

Remote Data Connectivity

Overview of Remote Data Connectivity Functions

Overview of Recital Data Objects (RDO)

The RDO functions can be used for data access for both remote third-party/Recital and local Recital data sources. The functions allow a connection to be made to the data, SQL queries to be sent and the results to be loaded into a result set object for further processing.

Each MySQL compatible RDO function also has a MySQL-named equivalent for ease of use, e.g. rdo_connect() and mysql_connect() are synonyms.

Connecting to a Data Source

numeric = rdo_connect(servertype as character, hostname_or_ip as character, account as character, 
  password as character [, database as character])
numeric = rdo_select_db(database as character [, connection as numeric])

Disconnecting from a Data Source

numeric = rdo_close(connection as numeric)

Sending SQL Queries and Statements

numeric = rdo_exec(statement as string [, connection as numeric])
  • rdo_query() - return a result set object for a SELECT query
object = rdo_query(query as string [, connection as numeric])
object = rdo_unbuffered_query(query as string [, connection as numeric])
array = rdo_fetch_array(query as string)
array = rdo_fetch_assoc(query as string)
string = rdo_real_escape_string(query as string [, connection as numeric])
numeric = rdo_affected_rows()
  • rdo_info() - return information about the last query
string = rdo_info()

Processing Result Sets

Navigating the Result Set
object = rdo_fetch_row(resultset as object)
object = rdo_fetch_object(resultset as object)
numeric = rdo_data_seek(resultset as object, row as numeric)
numeric = rdo_field_seek(resultset as object, column as numeric)
Result Set Information
Field Information
Freeing Memory
numeric = rdo_free_object(resultset as object)
numeric = rdo_free_result(resultset as object)

Getting Error Information

numeric = rdo_errno()
  • rdo_error() - return the error description of the last Recital error
string = rdo_errno()

Getting Environment Information

string = rdo_get_client_info()
string = rdo_get_host_info(connection as numeric)
  • rdo_list_dbs() - list the available databases for the current or specified connection
object = rdo_list_dbs([connection as numeric])
  • rdo_ping() - check whether a server connection is active
logical = rdo_ping(connection as numeric)
  • rdo_stat() - return the current system status of Recital
numeric = rdo_stat(connection as numeric)
numeric = rdo_thread_id([connection as numeric])

Examples

Using Recital Client/Server

Using Recital with MySQL

Using Recital with PostgreSQL

Using Recital with Oracle

Using Recital with DB2