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Full Discussion: Trubble in executing the cpp program...
Top Forums Programming Trubble in executing the cpp program... Post 302249314 by calv on Tuesday 21st of October 2008 06:02:51 AM
Old 10-21-2008
Either the constructor of Connection, or the Query() method throws an exception of type const char *. You can catch it, by enclosing the calls with try, and adding a catch block, like:

Code:
try {
    Connection DbConnection(Host, Database, UserId, Password);
    query="select * from the test"; // test is my database
    result = DbConnection.Query(query); // perform the required database operation..
}
catch (const char *errmsg)
{
    std::cerr << "error message from connection: " << errmsg << "\n";
    return 1;
}

 

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LEARN ABOUT DEBIAN

rdf::query::plan::subselect

RDF::Query::Plan::SubSelect(3pm)			User Contributed Perl Documentation			  RDF::Query::Plan::SubSelect(3pm)

NAME

       RDF::Query::Plan::SubSelect - Executable query plan for sub-select queries.

VERSION

       This document describes RDF::Query::Plan::SubSelect version 2.908.

METHODS

       Beyond the methods documented below, this class inherits methods from the RDF::Query::Plan class.

       "new ( $query, [ \%logging_keys ] )"
	   Returns a new SubSelect query plan object. "<$query"> is a RDF:Query object representing a SELECT query.

       "execute ( $execution_context )"
       "next"
       "close"
       "query"
	   Returns the sub-select query object.

       "plan"
	   Returns the sub-select query plan object.

       "distinct"
	   Returns true if the pattern is guaranteed to return distinct results.

       "ordered"
	   Returns true if the pattern is guaranteed to return ordered results.

       "plan_node_name"
	   Returns the string name of this plan node, suitable for use in serialization.

       "plan_prototype"
	   Returns a list of scalar identifiers for the type of the content (children) nodes of this plan node. See RDF::Query::Plan for a list of
	   the allowable identifiers.

       "plan_node_data"
	   Returns the data for this plan node that corresponds to the values described by the signature returned by "plan_prototype".

       "graph ( $g )"

AUTHOR

	Gregory Todd Williams <gwilliams@cpan.org>

perl v5.14.2							    2012-01-31					  RDF::Query::Plan::SubSelect(3pm)
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