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Building new iterator-driven persistence machinery
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fcrepo-kernel/src/main/java/org/fcrepo/kernel/exception/MalformedRdfException.java
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| /** | ||
| * Copyright 2013 DuraSpace, Inc. | ||
| * | ||
| * 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 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.fcrepo.kernel.exception; | ||
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| import javax.jcr.RepositoryException; | ||
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| /** | ||
| * Indicates that RDF was presented for persistence to the repository, | ||
| * but could not be persisted for some reportable reason. | ||
| * | ||
| * @author ajs6f | ||
| * @date Oct 24, 2013 | ||
| */ | ||
| public class MalformedRdfException extends RepositoryException { | ||
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| private static final long serialVersionUID = 1L; | ||
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| /** | ||
| * Ordinary constructor. | ||
| * | ||
| * @param msg | ||
| */ | ||
| public MalformedRdfException(final String msg) { | ||
| super(msg); | ||
| } | ||
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| } |
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fcrepo-kernel/src/main/java/org/fcrepo/kernel/utils/iterators/DifferencingIterator.java
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94
fcrepo-kernel/src/main/java/org/fcrepo/kernel/utils/iterators/RdfAdder.java
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| /** | ||
| * Copyright 2013 DuraSpace, Inc. | ||
| * | ||
| * 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 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. | ||
| */ | ||
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| package org.fcrepo.kernel.utils.iterators; | ||
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| import static org.fcrepo.kernel.utils.NodePropertiesTools.appendOrReplaceNodeProperty; | ||
| import static org.slf4j.LoggerFactory.getLogger; | ||
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| import javax.jcr.NamespaceException; | ||
| import javax.jcr.Node; | ||
| import javax.jcr.RepositoryException; | ||
| import javax.jcr.Session; | ||
| import javax.jcr.Value; | ||
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| import org.fcrepo.kernel.exception.MalformedRdfException; | ||
| import org.fcrepo.kernel.rdf.GraphSubjects; | ||
| import org.slf4j.Logger; | ||
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| import com.hp.hpl.jena.rdf.model.Resource; | ||
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| /** | ||
| * Consumes an {@link RdfStream} by adding its contents to the | ||
| * JCR. | ||
| * | ||
| * @see {@link RdfRemover} for contrast | ||
| * @author ajs6f | ||
| * @date Oct 24, 2013 | ||
| */ | ||
| public class RdfAdder extends RdfPersister { | ||
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| private static final Logger LOGGER = getLogger(RdfAdder.class); | ||
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| /** | ||
| * Ordinary constructor. | ||
| * | ||
| * @param graphSubjects | ||
| * @param session | ||
| * @param stream | ||
| */ | ||
| public RdfAdder(final GraphSubjects graphSubjects, final Session session, | ||
| final RdfStream stream) { | ||
| super(graphSubjects, session, stream); | ||
| } | ||
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| @Override | ||
| protected void operateOnMixin(final Resource mixinResource, | ||
| final Node subjectNode) throws RepositoryException { | ||
| final String namespacePrefix; | ||
| try { | ||
| namespacePrefix = | ||
| session.getNamespacePrefix(mixinResource.getNameSpace()); | ||
| } catch (final NamespaceException e) { | ||
| throw new MalformedRdfException( | ||
| "Unable to resolve registered namespace for resource " | ||
| + mixinResource.toString()); | ||
| } | ||
| final String mixinName = | ||
| namespacePrefix + ":" + mixinResource.getLocalName(); | ||
| if (session.getWorkspace().getNodeTypeManager().hasNodeType(mixinName)) { | ||
| if (subjectNode.canAddMixin(mixinName)) { | ||
| LOGGER.debug("Adding mixin: {} to node: {}.", mixinName, | ||
| subjectNode.getPath()); | ||
| subjectNode.addMixin(mixinName); | ||
| } else { | ||
| throw new MalformedRdfException( | ||
| "Could not persist triple containing type assertion:" | ||
| + mixinResource.toString() | ||
| + " because no such mixin/type exists in repository!"); | ||
| } | ||
| } | ||
| } | ||
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| @Override | ||
| protected void operateOnOneValueOfProperty(final Node n, final String p, | ||
| final Value v) throws RepositoryException { | ||
| LOGGER.debug("Adding property: {} with value: {} to node: {}.", p, v, n | ||
| .getPath()); | ||
| appendOrReplaceNodeProperty(n, p, v); | ||
| } | ||
| } |
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