void replaceIndex( XmlContainer &container, const std::string &URI,
const std::string &nodeName, const std::string &indexType,
XmlTransaction &txn, XmlUpdateContext &uc)
{
std::cout << "Replacing index on node: " << nodeName << std::endl;
try
{
//Retrieve the XmlIndexSpecification from the container
XmlIndexSpecification idxSpec = container.getIndexSpecification( txn );
//Lets see what indexes exist on this container
std::string uri, name, index;
int count = 0;
std::cout << "Before index add." << std::endl;
while( idxSpec.next(uri, name, index) )
{
// Obtain the value as a string and print it to the console
std::cout << "\tFor node '" << name << "', found index: '" << index << "'." << std::endl;
count ++;
}
std::cout << count << " indexes found." << std::endl;
//Replace the indexes for the specified node
idxSpec.replaceIndex( URI, nodeName, indexType );
//Set the specification back to the container
container.setIndexSpecification( txn, idxSpec, uc );
//Look at the indexes again to make sure our replacement took.
count = 0;
idxSpec.reset();
std::cout << "After index add." << std::endl;
while( idxSpec.next(uri, name, index) )
{
// Obtain the value as a string and print it to the console
std::cout << "\tFor node '" << name << "', found index: '" << index << "'." << std::endl;
count ++;
}
std::cout << count << " indexes found." << std::endl;
}
//Catches XmlException
catch(std::exception &e)
{
std::cerr << "Index replace failed: \n";
std::cerr << e.what() << "\n";
txn.abort();
exit( -1 );
}
std::cout << "Index replaced successfully." << std::endl;
}
void deleteIndex( XmlContainer &container, const std::string &URI,
const std::string &nodeName, const std::string &indexType,
XmlTransaction &txn, XmlUpdateContext &uc )
{
std::cout << "Deleting index type: '" << indexType << ""
<< " from node: '" << nodeName << "'." << std::endl;
try
{
//Retrieve the XmlIndexSpecification from the container
XmlIndexSpecification idxSpec = container.getIndexSpecification( txn );
std::cout << "Before the delete, the following indexes are maintained for the container:" << std::endl;
std::string uri, name, index;
while( idxSpec.next(uri, name, index) )
{
// Obtain the value as a string and print it to the console
std::cout << "\tFor node '" << name << "', found index: '" << index << "'." << std::endl;
}
std::cout << "\n" << std::endl;
//Delete the indexes from the specification.
idxSpec.deleteIndex( URI, nodeName, indexType );
//Set the specification back to the container
container.setIndexSpecification( txn, idxSpec, uc );
//Show the remaining indexes in the container, if any.
std::cout << "After the delete, the following indexes exist for the container:" << std::endl;
idxSpec.reset();
while( idxSpec.next(uri, name, index) )
{
// Obtain the value as a string and print it to the console
std::cout << "\tFor node '" << name << "', found index: '" << index << "'." << std::endl;
}
std::cout << "\n" << std::endl;
}
//Catches XmlException.
catch(std::exception &e)
{
std::cerr << "Index delete failed: \n";
std::cerr << e.what() << "\n";
txn.abort();
exit( -1 );
}
std::cout << "Index deleted successfully.\n" << std::endl;
}
void InfoCommand::execute(Args &args, Environment &env)
{
if (args.size() == 2 && args[1] == "preload") {
doPreload(env);
return;
}
cout << "Version: " << DBXML_VERSION_STRING << endl;
cout << " " << DB_VERSION_STRING << endl;
if (env.container()) {
const std::string &cname = env.container()->getName();
XmlContainer::ContainerType ctype = env.container()->getContainerType();
XmlIndexSpecification is;
if(env.txn())
is = env.container()->getIndexSpecification(*env.txn());
else
is = env.container()->getIndexSpecification();
cout << "Default container name: " << cname << endl;
cout << "Type of default container: " <<
((ctype == XmlContainer::WholedocContainer) ?
"WholedocContainer" : "NodeContainer") << endl;
cout << "Index Nodes: " <<
(env.container()->getIndexNodes() ? "on" : "off") << endl;
cout << "Auto-indexing: " <<
(is.getAutoIndexing() ? "on" : "off") << endl;
} else {
cout << "No default container" << endl;
}
// return type
// verbosity
// transacted
cout << "Shell and XmlManager state:" << endl;
if (env.transactions()) {
cout << "\tTransactional, ";
if (env.txn())
cout << "active transaction" << endl;
else
cout << "no active transaction" << endl;
} else
cout << "\tNot transactional" << endl;;
cout << "\tVerbose: " << (env.verbose() ? "on" : "off") << endl;
XmlQueryContext::EvaluationType etype = env.context().getEvaluationType();
cout << "\tQuery context state: LiveValues," <<
((etype == XmlQueryContext::Eager)? "Eager" : "Lazy") << endl;
}
