Refs #3332. Added a method to ConfigService to retrieve subkeys from a configuration.

Code/Mantid/Framework/Kernel/inc/MantidKernel/ConfigService.h

@@ -118,6 +118,8 @@ namespace Mantid
       void saveConfig(const std::string &filename) const;
       /// Searches for a configuration property
       std::string getString(const std::string& keyName, bool use_cache=true) const;
+      /// Searches for a key in the configuration property
+      std::vector<std::string> getKeys(const std::string& keyName) const;
       /// Sets a configuration property
       void setString(const std::string & keyName, const std::string & keyValue);
       // Searches for a configuration property and returns its value

Code/Mantid/Framework/Kernel/src/ConfigService.cpp

@@ -814,6 +814,28 @@ std::string ConfigServiceImpl::getString(const std::string& keyName, bool use_ca
   return retVal;
 }
 
+/** Searches for keys within the currently loaded configuaration values and
+ *  returns them as strings in a vector. 
+ *
+ *  @param keyName :: The case sensitive name of the property that you need the key for.
+ *  @returns The string value of each key within a vector, or an empty vector if there isn't
+ *  a key or it couldn't be found.
+ */
+std::vector<std::string> ConfigServiceImpl::getKeys(const std::string& keyName) const
+{
+  std::vector<std::string> keyVector;
+  try
+  {
+    m_pConf->keys(keyName,keyVector);
+  }
+  catch (Poco::NotFoundException&)
+  {
+    g_log.debug() << "Unable to find " << keyName << " in the properties file" << std::endl;
+    keyVector.clear();
+  }
+  return keyVector;
+}
+
 /**
  * Set a configuration property. An existing key will have its value updated.
  * @param key :: The key to refer to this property

Code/Mantid/Framework/Kernel/test/ConfigServiceTest.h

@@ -337,6 +337,32 @@ public:
   }
 
 
+  void testGetKeysWithValidInput()
+  {
+    // Returns all subkeys with the given root key
+    std::vector<std::string> keyVector = ConfigService::Instance().getKeys("workspace.sendto");
+    TS_ASSERT_EQUALS(keyVector.size(), 4);
+    TS_ASSERT_EQUALS(keyVector[0], "1");
+    TS_ASSERT_EQUALS(keyVector[1], "2");
+    TS_ASSERT_EQUALS(keyVector[2], "3");
+    TS_ASSERT_EQUALS(keyVector[3], "4");
+  }
+
+  void testGetKeysWithZeroSubKeys()
+  {
+    std::vector<std::string> keyVector = ConfigService::Instance().getKeys("mantid.legs");
+    TS_ASSERT_EQUALS(keyVector.size(), 0);
+    std::vector<std::string> keyVector2 = ConfigService::Instance().getKeys("mantidlegs");
+    TS_ASSERT_EQUALS(keyVector2.size(), 0);
+  }
+
+  void testGetKeysWithEmptyPrefix()
+  {
+    //Returns all *root* keys, i.e. unique keys left of the first period
+    std::vector<std::string> keyVector = ConfigService::Instance().getKeys(""); 
+    TS_ASSERT_EQUALS(keyVector.size(), 5);
+  }
+
 protected:
   bool m_valueChangedSent;
   std::string m_key;

Code/Mantid/Framework/Properties/MantidTest.properties

@@ -16,3 +16,9 @@ logging.channels.fileChannel.formatter.pattern = %Y-%m-%d %H:%M:%S,%i [%I] %p %s
 # Test a relative path conversion. Using a property where the path doesn't have to exist for conversion.
 defaultsave.directory = ../../nonexistent
 
+# Test keys
+workspace.sendto.1 = python,SaveNexus
+workspace.sendto.2 = gsas,SaveGSS
+workspace.sendto.3 = SansView,SaveCansas1D
+workspace.sendto.4.5 = SansView,SaveCansas1D
+