/*
 * The RegisterInterest QuickStart Example.
 *
 * This example takes the following steps:
 *
 * 1. Connect to a GemFire Distributed System.
 * 2. Create a GemFire Cache.
 * 3. Get the example Region from the Cache.
 * 4. Call registerAllKeys() and unregisterAllKeys() on the Region.
 * 5. Call registerKeys() and unregisterKeys() on the Region.
 * 6. Call registerRegex() and unregisterRegex() on the Region.
 * 7. Close the Cache.
 * 8. Disconnect from the Distributed System.
 *
 */

// Include the GemFire library.
#include <gfcpp/GemfireCppCache.hpp>

// Use the "gemfire" namespace.
using namespace gemfire;

// The RegisterInterest QuickStart example.
int main(int argc, char ** argv)
{
  try
  {
    // Connect to the GemFire Distributed System using the settings from the gfcpp.properties file by default.
    DistributedSystemPtr dSysPtr = DistributedSystem::connect("ExampleDistributedSystem");

    LOGINFO("Connected to the GemFire Distributed System");

    // Create a GemFire Cache with the "clientRegisterInterest.xml" Cache XML file.
    CachePtr cachePtr = CacheFactory::create("ExampleCache", dSysPtr, "XMLs/clientRegisterInterest.xml");

    LOGINFO("Created the GemFire Cache");

    // Get the example Region from the Cache which is declared in the Cache XML file.
    RegionPtr regionPtr = cachePtr->getRegion("/root/exampleRegion");

    LOGINFO("Obtained the Region from the Cache");

    // Register and Unregister Interest on Region for All Keys.
    regionPtr->registerAllKeys();
    regionPtr->unregisterAllKeys();

    LOGINFO("Called registerAllKeys() and unregisterAllKeys()");

    // Register and Unregister Interest on Region for Some Keys.
    VectorOfCacheableKey keys;
    keys.push_back( CacheableInt32::create(123) );
    keys.push_back( CacheableString::create("Key-123") );
    regionPtr->registerKeys(keys);
    regionPtr->unregisterKeys(keys);

    LOGINFO("Called registerKeys() and unregisterKeys()");

    // Register and Unregister Interest on Region for Keys matching a Regular Expression.
    regionPtr->registerRegex("Keys-*");
    regionPtr->unregisterRegex("Keys-*");

    LOGINFO("Called registerRegex() and unregisterRegex()");

    //Register Interest on Region for All Keys with getInitialValues to populate the cache with values of all keys from the server.
    regionPtr->registerAllKeys(false, NULLPTR, true); // Where the 3rd argument is getInitialValues.
    //Unregister Interest on Region for All Keys.
    regionPtr->unregisterAllKeys();

    LOGINFO("Called registerAllKeys() and unregisterAllKeys() with getInitialValues argument");

    //Register Interest on Region for Some Keys with getInitialValues.
    keys.push_back( CacheableInt32::create(123) );
    keys.push_back( CacheableString::create("Key-123") );
    regionPtr->registerKeys(keys, false, true); // Where the 3rd argument is getInitialValues.

    LOGINFO("Called registerKeys() and unregisterKeys() with getInitialValues argument");
    //Unregister Interest on Region for Some Keys.
    regionPtr->unregisterKeys(keys);

    //Register and Unregister Interest on Region for Keys matching a Regular Expression with getInitialValues.
    regionPtr->registerRegex("Keys-*", false, NULLPTR, true);
    regionPtr->unregisterRegex("Keys-*");

    LOGINFO("Called registerRegex() and unregisterRegex() with getInitialValues argument");

    // Close the GemFire Cache.
    cachePtr->close();

    LOGINFO("Closed the GemFire Cache");

    // Disconnect from the GemFire Distributed System.
    dSysPtr->disconnect();

    LOGINFO("Disconnected from the GemFire Distributed System");
  }
  // An exception should not occur
  catch(const Exception & gemfireExcp)
  {
    LOGERROR("RegisterInterest GemFire Exception: %s", gemfireExcp.getMessage());
  }
}