diff options
Diffstat (limited to 'id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/util/StreamEntityResolver.java')
-rw-r--r-- | id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/util/StreamEntityResolver.java | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/util/StreamEntityResolver.java b/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/util/StreamEntityResolver.java new file mode 100644 index 000000000..b3bc8ae47 --- /dev/null +++ b/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/util/StreamEntityResolver.java @@ -0,0 +1,88 @@ +/* + * Copyright 2003 Federal Chancellery Austria + * MOA-ID has been developed in a cooperation between BRZ, the Federal + * Chancellery Austria - ICT staff unit, and Graz University of Technology. + * + * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by + * the European Commission - subsequent versions of the EUPL (the "Licence"); + * You may not use this work except in compliance with the Licence. + * You may obtain a copy of the Licence at: + * http://www.osor.eu/eupl/ + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the Licence is distributed on an "AS IS" basis, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the Licence for the specific language governing permissions and + * limitations under the Licence. + * + * This product combines work with different licenses. See the "NOTICE" text + * file for details on the various modules and licenses. + * The "NOTICE" text file is part of the distribution. Any derivative works + * that you distribute must include a readable copy of the "NOTICE" text file. + */ + + +package at.gv.egovernment.moa.util; + +import java.io.IOException; +import java.io.InputStream; +import java.util.Map; + +import org.xml.sax.EntityResolver; +import org.xml.sax.InputSource; +import org.xml.sax.SAXException; + +/** + * An <code>EntityResolver</code> that maps system IDs to + * <code>InputStream</code>s. + * + * @author Patrick Peck + * @version $Id$ + */ +public class StreamEntityResolver implements EntityResolver { + + /** A mapping from Public ID or System ID to an <code>InputStream</code> + * containing the entity. */ + private Map mappedEntities; + + /** + * Create a <code>StreamEntityResolver</code>. + * + * @param mappedEntities A mapping from public or system IDs + * (<code>String</code> objects) to <code>InputStream</code>s. + */ + public StreamEntityResolver(Map mappedEntities) { + this.mappedEntities = mappedEntities; + } + + /** + * Resolve an entity by looking it up in the mapped entities. + * + * First, the public ID is looked up in the mapping, then the system ID. + * + * @param publicId The public ID of the entity. + * @param systemId The system ID of the entity. + * @return An <code>InputStream</code> containing the entity or + * <code>null</code> if no entity could be found. + * @throws SAXException Signalling a parsing exception. + * @throws IOException Error reading the entity. + */ + public InputSource resolveEntity(String publicId, String systemId) + throws SAXException, IOException { + + InputSource src = null; + + if (publicId != null && mappedEntities.get(publicId) != null) { + src = new InputSource((InputStream) mappedEntities.get(publicId)); + } else if (systemId != null && mappedEntities.get(systemId) != null) { + src = new InputSource((InputStream) mappedEntities.get(systemId)); + } + + if (src != null) { + src.setPublicId(publicId); + src.setSystemId(systemId); + } + + return src; + } +} |