| /* |
| * Copyright 2009-2010 by The Regents of the University of California |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * you may obtain a copy of the License from |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package edu.uci.ics.asterix.runtime.evaluators.common; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.Map; |
| |
| import edu.uci.ics.asterix.om.functions.IFunctionDescriptor; |
| import edu.uci.ics.asterix.om.functions.IFunctionDescriptorFactory; |
| import edu.uci.ics.asterix.om.functions.IFunctionManager; |
| import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException; |
| import edu.uci.ics.hyracks.algebricks.core.algebra.functions.FunctionIdentifier; |
| |
| public class FunctionManagerImpl implements IFunctionManager { |
| private final Map<FunctionIdentifier, IFunctionDescriptorFactory> functions; |
| |
| public FunctionManagerImpl() { |
| functions = new HashMap<FunctionIdentifier, IFunctionDescriptorFactory>(); |
| } |
| |
| @Override |
| public synchronized IFunctionDescriptor lookupFunction(FunctionIdentifier fid) throws AlgebricksException { |
| return functions.get(fid).createFunctionDescriptor(); |
| } |
| |
| @Override |
| public synchronized void registerFunction(IFunctionDescriptorFactory descriptorFactory) throws AlgebricksException { |
| FunctionIdentifier fid = descriptorFactory.createFunctionDescriptor().getIdentifier(); |
| functions.put(fid, descriptorFactory); |
| } |
| |
| @Override |
| public synchronized void unregisterFunction(IFunctionDescriptorFactory descriptorFactory) |
| throws AlgebricksException { |
| FunctionIdentifier fid = descriptorFactory.createFunctionDescriptor().getIdentifier(); |
| functions.remove(fid); |
| } |
| |
| @Override |
| public synchronized Iterator<IFunctionDescriptorFactory> iterator() { |
| return new ArrayList<IFunctionDescriptorFactory>(functions.values()).iterator(); |
| } |
| } |