diff --git a/webapp/src/edu/cornell/mannlib/vitro/webapp/search/solr/CalculateBeta.java b/webapp/src/edu/cornell/mannlib/vitro/webapp/search/solr/CalculateBeta.java
new file mode 100644
index 000000000..46772ecf0
--- /dev/null
+++ b/webapp/src/edu/cornell/mannlib/vitro/webapp/search/solr/CalculateBeta.java
@@ -0,0 +1,25 @@
+/* $This file is distributed under the terms of the license in /doc/license.txt$ */
+
+package edu.cornell.mannlib.vitro.webapp.search.solr;
+
+import org.apache.solr.common.SolrInputDocument;
+
+import edu.cornell.mannlib.vitro.webapp.beans.Individual;
+
+public class CalculateBeta implements DocumentModifier{
+
+    @Override
+    public void modifyDocument(Individual individual, SolrInputDocument doc) {
+        // TODO Auto-generated method stub
+        
+        /*
+          may want to do something like:
+          
+          Field f = doc.getField(termALLTEXTUSTEMMED);
+          f.setBoost( beta * f.getBoost() )
+                    
+          
+         */
+    }
+
+}
diff --git a/webapp/src/edu/cornell/mannlib/vitro/webapp/search/solr/CalculatePhi.java b/webapp/src/edu/cornell/mannlib/vitro/webapp/search/solr/CalculatePhi.java
new file mode 100644
index 000000000..57c01dda1
--- /dev/null
+++ b/webapp/src/edu/cornell/mannlib/vitro/webapp/search/solr/CalculatePhi.java
@@ -0,0 +1,16 @@
+/* $This file is distributed under the terms of the license in /doc/license.txt$ */
+
+package edu.cornell.mannlib.vitro.webapp.search.solr;
+
+import org.apache.solr.common.SolrInputDocument;
+
+import edu.cornell.mannlib.vitro.webapp.beans.Individual;
+
+public class CalculatePhi implements DocumentModifier{
+
+    @Override
+    public void modifyDocument(Individual individual, SolrInputDocument doc) {
+        // TODO Auto-generated method stub        
+    }
+
+}
diff --git a/webapp/src/edu/cornell/mannlib/vitro/webapp/search/solr/ContextNodeFields.java b/webapp/src/edu/cornell/mannlib/vitro/webapp/search/solr/ContextNodeFields.java
new file mode 100644
index 000000000..0a06fe7db
--- /dev/null
+++ b/webapp/src/edu/cornell/mannlib/vitro/webapp/search/solr/ContextNodeFields.java
@@ -0,0 +1,16 @@
+/* $This file is distributed under the terms of the license in /doc/license.txt$ */
+
+package edu.cornell.mannlib.vitro.webapp.search.solr;
+
+import org.apache.solr.common.SolrInputDocument;
+
+import edu.cornell.mannlib.vitro.webapp.beans.Individual;
+
+public class ContextNodeFields implements DocumentModifier{
+
+    @Override
+    public void modifyDocument(Individual individual, SolrInputDocument doc) {
+        // TODO Auto-generated method stub        
+    }
+
+}
diff --git a/webapp/src/edu/cornell/mannlib/vitro/webapp/search/solr/DocumentModifier.java b/webapp/src/edu/cornell/mannlib/vitro/webapp/search/solr/DocumentModifier.java
new file mode 100644
index 000000000..662c017ec
--- /dev/null
+++ b/webapp/src/edu/cornell/mannlib/vitro/webapp/search/solr/DocumentModifier.java
@@ -0,0 +1,14 @@
+/* $This file is distributed under the terms of the license in /doc/license.txt$ */
+
+package edu.cornell.mannlib.vitro.webapp.search.solr;
+
+import org.apache.solr.common.SolrInputDocument;
+
+import edu.cornell.mannlib.vitro.webapp.beans.Individual;
+
+/**
+ * This interface represents an object that can add to a SolrInputDocument.
+ */
+public interface DocumentModifier {
+    public void modifyDocument(Individual individual, SolrInputDocument doc);
+}
diff --git a/webapp/src/edu/cornell/mannlib/vitro/webapp/search/solr/IndividualToSolrDocument.java b/webapp/src/edu/cornell/mannlib/vitro/webapp/search/solr/IndividualToSolrDocument.java
index d33ea1fe8..e607e3b75 100644
--- a/webapp/src/edu/cornell/mannlib/vitro/webapp/search/solr/IndividualToSolrDocument.java
+++ b/webapp/src/edu/cornell/mannlib/vitro/webapp/search/solr/IndividualToSolrDocument.java
@@ -52,6 +52,8 @@ public class IndividualToSolrDocument implements Obj2DocIface {
     private IndividualProhibitedFromSearch individualProhibitedFromSearch;
     
     private SearchQueryHandler searchQueryHandler;
+
+    private List<DocumentModifier> documentModifiers = new ArrayList<DocumentModifier>();
     
     public static Map<String,Float> betas = new Hashtable<String,Float>();
     
@@ -66,7 +68,15 @@ public class IndividualToSolrDocument implements Obj2DocIface {
     	fillContextNodes(); 
     }
     
-   
+    public IndividualToSolrDocument(ProhibitedFromSearch classesProhibitedFromSearch, 
+            IndividualProhibitedFromSearch individualProhibitedFromSearch,
+                List<DocumentModifier> docModifiers){
+        this.classesProhibitedFromSearch = classesProhibitedFromSearch;
+        this.individualProhibitedFromSearch = individualProhibitedFromSearch;
+        this.documentModifiers = docModifiers;
+        fillContextNodes(); 
+    }
+    
     @SuppressWarnings("static-access")
 	@Override
     public Object translate(Object obj) throws IndexingException{
@@ -317,6 +327,13 @@ public class IndividualToSolrDocument implements Obj2DocIface {
             doc.addField(term.ALLTEXTUNSTEMMED, alltext, 2.5F*beta*phi);
             doc.addField(term.ALLTEXT_PHONETIC, alltext, PHONETIC_BOOST);
             doc.setDocumentBoost(2.5F*beta*phi);
+            
+            //run the document modifiers
+            if( documentModifiers != null ){
+                for(DocumentModifier modifier: documentModifiers){
+                    modifier.modifyDocument(ent, doc);
+                }
+            }
         }
         
         return doc;