| /* |
| * Copyright 2009-2013 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.hyracks.algebricks.examples.piglet.runtime.functions; |
| |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import edu.uci.ics.hyracks.algebricks.core.algebra.functions.AlgebricksBuiltinFunctions; |
| import edu.uci.ics.hyracks.algebricks.core.algebra.functions.FunctionIdentifier; |
| import edu.uci.ics.hyracks.algebricks.examples.piglet.exceptions.PigletException; |
| import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyEvaluatorFactory; |
| |
| public class PigletFunctionRegistry { |
| private static final Map<FunctionIdentifier, IPigletFunctionEvaluatorFactoryBuilder> builderMap; |
| |
| static { |
| Map<FunctionIdentifier, IPigletFunctionEvaluatorFactoryBuilder> temp = new HashMap<FunctionIdentifier, IPigletFunctionEvaluatorFactoryBuilder>(); |
| |
| temp.put(AlgebricksBuiltinFunctions.EQ, new IPigletFunctionEvaluatorFactoryBuilder() { |
| @Override |
| public ICopyEvaluatorFactory buildEvaluatorFactory(FunctionIdentifier fid, ICopyEvaluatorFactory[] arguments) { |
| return new IntegerEqFunctionEvaluatorFactory(arguments[0], arguments[1]); |
| } |
| }); |
| |
| builderMap = Collections.unmodifiableMap(temp); |
| } |
| |
| public static ICopyEvaluatorFactory createFunctionEvaluatorFactory(FunctionIdentifier fid, ICopyEvaluatorFactory[] args) |
| throws PigletException { |
| IPigletFunctionEvaluatorFactoryBuilder builder = builderMap.get(fid); |
| if (builder == null) { |
| throw new PigletException("Unknown function: " + fid); |
| } |
| return builder.buildEvaluatorFactory(fid, args); |
| } |
| } |