| /* |
| * 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.metadata.declared; |
| |
| import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException; |
| import edu.uci.ics.hyracks.algebricks.core.algebra.metadata.IDataSource; |
| import edu.uci.ics.hyracks.algebricks.core.algebra.metadata.IDataSourceIndex; |
| |
| public class AqlIndex implements IDataSourceIndex<String, AqlSourceId> { |
| |
| private final AqlCompiledIndexDecl acid; |
| private final AqlCompiledMetadataDeclarations acmd; |
| private final String datasetName; |
| |
| // Every transactions needs to work with its own instance of an |
| // AqlMetadataProvider. |
| public AqlIndex(AqlCompiledIndexDecl acid, AqlCompiledMetadataDeclarations acmd, String datasetName) { |
| this.acid = acid; |
| this.acmd = acmd; |
| this.datasetName = datasetName; |
| } |
| |
| @Override |
| public IDataSource<AqlSourceId> getDataSource() { |
| try { |
| AqlSourceId asid = new AqlSourceId(acmd.getDataverseName(), datasetName); |
| return AqlMetadataProvider.lookupSourceInMetadata(acmd, asid); |
| } catch (AlgebricksException e) { |
| return null; |
| } |
| } |
| |
| @Override |
| public String getId() { |
| return acid.getIndexName(); |
| } |
| |
| } |