| /* |
| * 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.oodt.cas.filemgr.versioning; |
| |
| //JDK imports |
| import java.io.File; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| |
| //OODT imports |
| import org.apache.oodt.cas.filemgr.structs.Product; |
| import org.apache.oodt.cas.filemgr.structs.Reference; |
| import org.apache.oodt.cas.filemgr.structs.exceptions.VersioningException; |
| import org.apache.oodt.cas.metadata.Metadata; |
| |
| /** |
| * @author mattmann |
| * @version $Revision$ |
| * |
| * <p> |
| * A {@link Versioner} that handles single file {@link Product}s by storing |
| * them in <code>productTypeRepoPath/Filename</code>. |
| * </p> |
| * |
| */ |
| public class SingleFileBasicVersioner implements Versioner { |
| |
| /* filename fields */ |
| public static final String FILENAME_FIELD = "Filename"; |
| |
| /* our log stream */ |
| private static final Logger LOG = Logger.getLogger(SingleFileBasicVersioner.class |
| .getName()); |
| |
| /** |
| * |
| */ |
| public SingleFileBasicVersioner() { |
| super(); |
| // TODO Auto-generated constructor stub |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.apache.oodt.cas.filemgr.versioning.Versioner#createDataStoreReferences(gov.nasa. |
| * jpl.oodt.cas.filemgr.structs.Product, |
| * org.apache.oodt.cas.metadata.Metadata) |
| */ |
| public void createDataStoreReferences(Product product, Metadata metadata) |
| throws VersioningException { |
| // we only handle single files, so throw exception if product is |
| // heirarhical |
| |
| if (!product.getProductStructure().equals(Product.STRUCTURE_FLAT)) { |
| throw new VersioningException( |
| "SingleFileVersioner: unable to version" + " Product: [" |
| + product.getProductName() |
| + "] with heirarchical structure"); |
| } |
| |
| // we need the Filename Metadata parameter for this to work |
| String filename = metadata.getMetadata(FILENAME_FIELD); |
| |
| if (filename == null || (filename != null && filename.equals(""))) { |
| throw new VersioningException( |
| "SingleFileVersioner: unable to version without " |
| + "Filename metadata field specified!"); |
| } |
| |
| // now we need the product type repo path |
| String productTypeRepoPathUri = product.getProductType() |
| .getProductRepositoryPath(); |
| String productTypeRepoPath = VersioningUtils |
| .getAbsolutePathFromUri(productTypeRepoPathUri); |
| |
| if (!productTypeRepoPath.endsWith("/")) { |
| productTypeRepoPath += "/"; |
| } |
| |
| // final file location is: |
| // /productTypeRepoPath/Filename |
| |
| String dataStorePath = productTypeRepoPath + filename; |
| String dataStoreRef = new File(dataStorePath).toURI().toString(); |
| |
| // get the first reference back |
| // set its data store ref |
| Reference ref = (Reference) product.getProductReferences().get(0); |
| LOG.log(Level.INFO, "Generated data store ref: [" + dataStoreRef |
| + "] from origRef: [" + ref.getOrigReference() + "]"); |
| ref.setDataStoreReference(dataStoreRef); |
| |
| } |
| } |