| /* |
| * 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.asterix.runtime.evaluators.constructors; |
| |
| import org.apache.asterix.common.annotations.MissingNullInOutFunction; |
| import org.apache.asterix.om.functions.BuiltinFunctions; |
| import org.apache.asterix.om.functions.IFunctionDescriptor; |
| import org.apache.asterix.om.functions.IFunctionDescriptorFactory; |
| import org.apache.asterix.runtime.evaluators.base.AbstractScalarFunctionDynamicDescriptor; |
| import org.apache.hyracks.algebricks.core.algebra.functions.FunctionIdentifier; |
| import org.apache.hyracks.algebricks.runtime.base.IEvaluatorContext; |
| import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluator; |
| import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory; |
| import org.apache.hyracks.api.exceptions.HyracksDataException; |
| |
| @MissingNullInOutFunction |
| public class AStringConstructorDescriptor extends AbstractScalarFunctionDynamicDescriptor { |
| |
| private static final long serialVersionUID = 1L; |
| public static final IFunctionDescriptorFactory FACTORY = new IFunctionDescriptorFactory() { |
| @Override |
| public IFunctionDescriptor createFunctionDescriptor() { |
| return new AStringConstructorDescriptor(); |
| } |
| }; |
| |
| @Override |
| public IScalarEvaluatorFactory createEvaluatorFactory(final IScalarEvaluatorFactory[] args) { |
| return new IScalarEvaluatorFactory() { |
| private static final long serialVersionUID = 1L; |
| |
| @Override |
| public IScalarEvaluator createScalarEvaluator(IEvaluatorContext ctx) throws HyracksDataException { |
| return new AbstractStringConstructorEvaluator(ctx, args[0].createScalarEvaluator(ctx), sourceLoc) { |
| @Override |
| protected FunctionIdentifier getIdentifier() { |
| return AStringConstructorDescriptor.this.getIdentifier(); |
| } |
| }; |
| } |
| }; |
| } |
| |
| @Override |
| public FunctionIdentifier getIdentifier() { |
| return BuiltinFunctions.STRING_CONSTRUCTOR; |
| } |
| } |