| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 at |
| * |
| * 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 org.apache.vxquery.runtime.functions.base; |
| |
| import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluator; |
| import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory; |
| import org.apache.hyracks.api.context.IHyracksTaskContext; |
| import org.apache.hyracks.api.exceptions.HyracksDataException; |
| |
| public abstract class AbstractTaggedValueArgumentScalarEvaluatorFactory implements IScalarEvaluatorFactory { |
| private static final long serialVersionUID = 1L; |
| |
| private final IScalarEvaluatorFactory[] args; |
| |
| public AbstractTaggedValueArgumentScalarEvaluatorFactory(IScalarEvaluatorFactory[] args) { |
| this.args = args; |
| } |
| |
| @Override |
| public final IScalarEvaluator createScalarEvaluator(IHyracksTaskContext ctx) throws HyracksDataException { |
| IScalarEvaluator[] es = new IScalarEvaluator[args.length]; |
| for (int i = 0; i < es.length; ++i) { |
| es[i] = args[i].createScalarEvaluator(ctx); |
| } |
| return createEvaluator(ctx, es); |
| } |
| |
| protected abstract IScalarEvaluator createEvaluator(IHyracksTaskContext ctx, IScalarEvaluator[] args) |
| throws HyracksDataException; |
| } |