Checkin for RSOLR 031: "Remote API to get and compare models"

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@28472 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/solr/AlfrescoModel.java

@@ -0,0 +1,55 @@
+package org.alfresco.repo.solr;
+
+import org.alfresco.service.cmr.dictionary.ModelDefinition;
+
+/**
+ * Represents an alfresco model and checksum.
+ * 
+ * @since 4.0
+ */
+public class AlfrescoModel
+{
+    private ModelDefinition modelDef;
+    private long checksum;
+
+    protected AlfrescoModel(ModelDefinition modelDef)
+    {
+        this.modelDef = modelDef;
+        this.checksum = modelDef.getChecksum(ModelDefinition.XMLBindingType.SOLR);
+    }
+
+    public ModelDefinition getModelDef()
+    {
+        return modelDef;
+    }
+
+    public long getChecksum()
+    {
+        return checksum;
+    }
+    
+    public boolean equals(Object other)
+    {
+        if (this == other)
+        {
+            return true;
+        }
+
+        if(!(other instanceof AlfrescoModel))
+        {
+            return false;
+        }
+
+        AlfrescoModel model = (AlfrescoModel)other;
+        return (modelDef.getName().equals(model.getModelDef().getName()) &&
+        		checksum == model.getChecksum());
+    }
+
+    public int hashcode()
+    {
+    	int result = 17;
+        result = 31 * result + modelDef.hashCode();
+        result = 31 * result + Long.valueOf(checksum).hashCode();
+        return result;
+    }
+}