| /* |
| * 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.metadata.declared; |
| |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.asterix.external.api.IRecordReader; |
| import org.apache.asterix.external.api.IRecordReaderFactory; |
| import org.apache.asterix.metadata.api.IDatasourceFunction; |
| import org.apache.hyracks.algebricks.common.constraints.AlgebricksAbsolutePartitionConstraint; |
| import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException; |
| import org.apache.hyracks.api.application.IServiceContext; |
| import org.apache.hyracks.api.context.IHyracksTaskContext; |
| import org.apache.hyracks.api.exceptions.HyracksDataException; |
| import org.apache.hyracks.api.exceptions.IWarningCollector; |
| |
| public class FunctionDataSourceFactory implements IRecordReaderFactory<char[]> { |
| |
| private static final long serialVersionUID = 1L; |
| private final IDatasourceFunction function; |
| |
| public FunctionDataSourceFactory(IDatasourceFunction function) { |
| this.function = function; |
| } |
| |
| @Override |
| public final DataSourceType getDataSourceType() { |
| return DataSourceType.RECORDS; |
| } |
| |
| @Override |
| public AlgebricksAbsolutePartitionConstraint getPartitionConstraint() throws AlgebricksException { |
| return function.getPartitionConstraint(); |
| } |
| |
| @Override |
| public void configure(IServiceContext ctx, Map<String, String> configuration, IWarningCollector warningCollector) |
| throws AlgebricksException, HyracksDataException { |
| // No Op |
| } |
| |
| @Override |
| public IRecordReader<? extends char[]> createRecordReader(IHyracksTaskContext ctx, int partition) |
| throws HyracksDataException { |
| return function.createRecordReader(ctx, partition); |
| } |
| |
| @Override |
| public Class<?> getRecordClass() { |
| return char[].class; |
| } |
| |
| @Override |
| public List<String> getRecordReaderNames() { |
| return Collections.emptyList(); |
| } |
| } |