From ffc5f98325840b7604c2907316ecf66677965528 Mon Sep 17 00:00:00 2001
From: brianjlowe <brianjlowe@43c2fc9b-1942-4403-87b2-35b4218f7473>
Date: Tue, 25 Oct 2011 19:21:34 +0000
Subject: [PATCH] NIHVIVO-3221 derive dc:title for documents

---
 .../WEB-INF/resources/reasoner_plugins.txt    |   1 +
 .../reasoner/plugin/DCTitleForDocuments.java  | 117 ++++++++++++++++++
 2 files changed, 118 insertions(+)
 create mode 100644 productMods/WEB-INF/resources/reasoner_plugins.txt
 create mode 100644 src/org/vivoweb/reasoner/plugin/DCTitleForDocuments.java

diff --git a/productMods/WEB-INF/resources/reasoner_plugins.txt b/productMods/WEB-INF/resources/reasoner_plugins.txt
new file mode 100644
index 00000000..25372641
--- /dev/null
+++ b/productMods/WEB-INF/resources/reasoner_plugins.txt
@@ -0,0 +1 @@
+org.vivoweb.reasoner.plugin.DCTitleForDocuments
diff --git a/src/org/vivoweb/reasoner/plugin/DCTitleForDocuments.java b/src/org/vivoweb/reasoner/plugin/DCTitleForDocuments.java
new file mode 100644
index 00000000..aeabcd66
--- /dev/null
+++ b/src/org/vivoweb/reasoner/plugin/DCTitleForDocuments.java
@@ -0,0 +1,117 @@
+package org.vivoweb.reasoner.plugin;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+import com.hp.hpl.jena.ontology.OntModel;
+import com.hp.hpl.jena.rdf.model.Model;
+import com.hp.hpl.jena.rdf.model.Property;
+import com.hp.hpl.jena.rdf.model.RDFNode;
+import com.hp.hpl.jena.rdf.model.Resource;
+import com.hp.hpl.jena.rdf.model.ResourceFactory;
+import com.hp.hpl.jena.rdf.model.Statement;
+import com.hp.hpl.jena.rdf.model.StmtIterator;
+import com.hp.hpl.jena.vocabulary.RDF;
+import com.hp.hpl.jena.vocabulary.RDFS;
+
+import edu.cornell.mannlib.vitro.webapp.reasoner.ReasonerPlugin;
+
+public class DCTitleForDocuments implements ReasonerPlugin {
+
+	private final static Log log = LogFactory.getLog(DCTitleForDocuments.class);
+	
+	private final Resource BIBO_DOCUMENT = ResourceFactory.createResource(
+			                        "http://purl.org/ontology/bibo/Document");
+	private final Property DCTERMS_TITLE = ResourceFactory.createProperty(
+			                        "http://purl.org/dc/terms/title");
+		   
+	public boolean isInterestedInAddedStatement(Statement stmt) {
+		return (isRelevantType(stmt) || isRelevantPredicate(stmt));
+	}
+	
+	public boolean isInterestedInRemovedStatement(Statement stmt) {
+		return (isRelevantType(stmt) || isRelevantPredicate(stmt));
+	}
+	
+	public void addedABoxStatement(Statement stmt, 
+            Model aboxAssertionsModel, 
+            Model aboxInferencesModel, 
+            OntModel TBoxInferencesModel) {
+		boolean relevantType = isRelevantType(stmt);
+		boolean relevantPredicate = isRelevantPredicate(stmt);
+
+		if (relevantType) {
+			StmtIterator stmtIt = aboxAssertionsModel.listStatements(
+					stmt.getSubject(), RDFS.label, (RDFNode)null);
+			while (stmtIt.hasNext()) {
+				Statement s = stmtIt.nextStatement();
+				tryToInfer(stmt.getSubject(), 
+						   DCTERMS_TITLE, 
+						   s.getObject(), 
+						   aboxAssertionsModel, 
+						   aboxInferencesModel);
+			}
+		} else if (relevantPredicate) {
+			if(aboxAssertionsModel.contains(
+					stmt.getSubject(), RDF.type, BIBO_DOCUMENT) 
+			  || aboxInferencesModel.contains(
+					  stmt.getSubject(), RDF.type, BIBO_DOCUMENT)) {
+				tryToInfer(stmt.getSubject(), 
+						   DCTERMS_TITLE, 
+						   stmt.getObject(), 
+						   aboxAssertionsModel, 
+						   aboxInferencesModel);
+			}
+		}
+	}
+	
+	private void tryToInfer(Resource subject, 
+			                Property predicate, 
+			                RDFNode object, 
+			                Model aboxAssertionsModel, 
+			                Model aboxInferencesModel) {
+		// this should be part of a superclass or some class that provides
+		// reasoning framework functions
+		Statement s = ResourceFactory.createStatement(subject, predicate, object);
+		if (!aboxAssertionsModel.contains(s) && !aboxInferencesModel.contains(s)) {
+			aboxInferencesModel.add(s);
+		}
+	}
+
+    public void removedABoxStatement(Statement stmt, 
+            Model aboxAssertionsModel, 
+            Model aboxInferencesModel, 
+            OntModel TBoxInferencesModel) {
+    	
+    	if (isRelevantPredicate(stmt)) {
+//    		if (aboxAssertionsModel.contains(
+//    				stmt.getSubject(), RDF.type, BIBO_DOCUMENT)
+//    			        || aboxInferencesModel.contains(
+//    						stmt.getSubject(), RDF.type, BIBO_DOCUMENT)) {
+    			aboxInferencesModel.remove(
+    					stmt.getSubject(), DCTERMS_TITLE, stmt.getObject());
+//    		}
+    	} else if (isRelevantType(stmt)) {
+    		if(!aboxInferencesModel.contains(
+    				stmt.getSubject(), RDF.type, BIBO_DOCUMENT)) {
+    			StmtIterator labelIt = aboxAssertionsModel.listStatements(
+    					stmt.getSubject(), RDFS.label, (RDFNode) null);
+    			while (labelIt.hasNext()) {
+    				Statement labelStmt = labelIt.nextStatement();
+    				aboxInferencesModel.remove(
+    						labelStmt.getSubject(), DCTERMS_TITLE, labelStmt.getObject());
+    			}
+    		}
+    	}
+    }
+    
+    private boolean isRelevantType(Statement stmt) {
+		return (RDF.type.equals(stmt.getPredicate()) 
+				&& BIBO_DOCUMENT.equals(stmt.getObject()));
+    }	
+	
+    private boolean isRelevantPredicate(Statement stmt) {
+		return (RDFS.label.equals(stmt.getPredicate()));
+    }
+	
+}