[Bigdata-commit] SF.net SVN: bigdata:[4022] branches/JOURNAL_HA_BRANCH/bigdata-rdf/src/java/ com/bigdata/rdf/internal/constraints/IsLiteral.java

[<tho...@us...>]

Revision: 4022
          http://bigdata.svn.sourceforge.net/bigdata/?rev=4022&view=rev
Author:   thompsonbry
Date:     2010-12-19 23:36:02 +0000 (Sun, 19 Dec 2010)

Log Message:
-----------
Adding a (modified) version of IsLiteral.

Modified Paths:
--------------
    branches/JOURNAL_HA_BRANCH/bigdata-rdf/src/java/com/bigdata/rdf/internal/constraints/IsLiteral.java

Modified: branches/JOURNAL_HA_BRANCH/bigdata-rdf/src/java/com/bigdata/rdf/internal/constraints/IsLiteral.java
===================================================================
--- branches/JOURNAL_HA_BRANCH/bigdata-rdf/src/java/com/bigdata/rdf/internal/constraints/IsLiteral.java	2010-12-19 21:52:17 UTC (rev 4021)
+++ branches/JOURNAL_HA_BRANCH/bigdata-rdf/src/java/com/bigdata/rdf/internal/constraints/IsLiteral.java	2010-12-19 23:36:02 UTC (rev 4022)
@@ -1,74 +1,88 @@
-/*
-
-Copyright (C) SYSTAP, LLC 2006-2007.  All rights reserved.
-
-Contact:
-     SYSTAP, LLC
-     4501 Tower Road
-     Greensboro, NC 27410
-     lic...@bi...
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; version 2 of the License.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-
-*/
-package com.bigdata.rdf.internal.constraints;
-
-import com.bigdata.rdf.internal.IV;
-import com.bigdata.relation.rule.IBindingSet;
-import com.bigdata.relation.rule.IConstant;
-import com.bigdata.relation.rule.IConstraint;
-import com.bigdata.relation.rule.IVariable;
-
-/**
- * Imposes the constraint <code>isLiteral(x)</code>.
- */
-public class IsLiteral implements IConstraint {
-
-    /**
-	 * 
-	 */
-	private static final long serialVersionUID = 3125106876006900339L;
-
-	private final IVariable x;
-
-	public IsLiteral(final IVariable x) {
-		
-        if (x == null)
-            throw new IllegalArgumentException();
-
-        this.x = x;
-		
-	}
-	
-    public boolean accept(IBindingSet s) {
-        
-        // get binding for "x".
-        final IConstant x = s.get(this.x);
-       
-        if (x == null)
-            return true; // not yet bound.
-
-        final IV iv = (IV) x.get();
-        
-		return iv.isLiteral();
-		
-   }
-
-    public IVariable[] getVariables() {
-        
-        return new IVariable[] { x };
-        
-    }
-
-}
+/*
+
+Copyright (C) SYSTAP, LLC 2006-2007.  All rights reserved.
+
+Contact:
+     SYSTAP, LLC
+     4501 Tower Road
+     Greensboro, NC 27410
+     lic...@bi...
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; version 2 of the License.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+*/
+package com.bigdata.rdf.internal.constraints;
+
+import com.bigdata.rdf.internal.IV;
+import com.bigdata.relation.rule.IBindingSet;
+import com.bigdata.relation.rule.IConstant;
+import com.bigdata.relation.rule.IConstraint;
+import com.bigdata.relation.rule.IVariable;
+
+/**
+ * Imposes the constraint <code>x != y</code>.
+ * 
+ * @author <a href="mailto:tho...@us...">Bryan Thompson</a>
+ * @version $Id: NE.java 2889 2010-05-20 16:11:35Z mrpersonick $
+ * 
+ * FIXME Write unit tests for this.
+ */
+public class IsLiteral implements IConstraint {
+
+    /**
+	 * 
+	 */
+	private static final long serialVersionUID = 3125106876006900339L;
+
+	public final IVariable x;
+
+	private final boolean stringsOnly;
+    
+	public IsLiteral(final IVariable x) {
+		this(x, false);
+	}
+	
+    public IsLiteral(final IVariable x, final boolean stringsOnly) {
+        
+        if (x == null)
+            throw new IllegalArgumentException();
+
+        this.x = x;
+        this.stringsOnly = stringsOnly;
+        
+    }
+    
+    public boolean accept(IBindingSet s) {
+        
+        // get binding for "x".
+        final IConstant x = s.get(this.x);
+       
+        if (x == null)
+            return true; // not yet bound.
+
+        IV iv = (IV) x.get();
+        if (stringsOnly)
+        	return iv.isLiteral() && !iv.isInline();
+        else
+        	return iv.isLiteral(); 
+
+   }
+
+    public IVariable[] getVariables() {
+        
+        return new IVariable[] { x };
+        
+    }
+
+}


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