001/** 002 * Copyright 2015 DuraSpace, Inc. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016package org.fcrepo.transform; 017 018import org.fcrepo.transform.transformations.LDPathTransform; 019import org.fcrepo.transform.transformations.SparqlQueryTransform; 020 021import javax.ws.rs.core.MediaType; 022 023import java.io.InputStream; 024import java.util.HashMap; 025import java.util.Map; 026 027import static org.apache.jena.riot.WebContent.contentTypeSPARQLQuery; 028import static org.fcrepo.transform.transformations.LDPathTransform.APPLICATION_RDF_LDPATH; 029 030/** 031 * Get a Transformation from a MediaType 032 * 033 * @author cbeer 034 */ 035public class TransformationFactory { 036 037 private Map<String, Transformation<?>> mimeToTransform = new HashMap<>(); 038 039 /** 040 * Get a new TransformationFactory with the default classes 041 * @throws SecurityException if security exception occurred 042 */ 043 public TransformationFactory() { 044 mimeToTransform.put(contentTypeSPARQLQuery, new SparqlQueryTransform(null)); 045 mimeToTransform.put(APPLICATION_RDF_LDPATH, new LDPathTransform(null)); 046 } 047 048 /** 049 * Get a Transformation from a MediaType and an InputStream with 050 * the transform program 051 * @param contentType the content type 052 * @param inputStream the input stream 053 * @return a Transformation 054 */ 055 056 public <T> Transformation<T> getTransform(final MediaType contentType, final InputStream inputStream) { 057 final String mimeType = contentType.toString(); 058 if (mimeToTransform.containsKey(mimeType)) { 059 return (Transformation<T>) mimeToTransform.get(contentType.toString()).newTransform(inputStream); 060 } 061 throw new UnsupportedOperationException( 062 "No transform type exists for media type " + mimeType + "!"); 063 } 064}