Author: andy
Date: Sat Feb 2 19:53:33 2013
New Revision: 1441799
URL: http://svn.apache.org/viewvc?rev=1441799&view=rev
Log:
An ExprVisitor that carries and applies an OpVisitor.
Added:
jena/trunk/jena-arq/src/main/java/com/hp/hpl/jena/sparql/algebra/optimize/ExprVisitorApplyVisitor.java
Added:
jena/trunk/jena-arq/src/main/java/com/hp/hpl/jena/sparql/algebra/optimize/ExprVisitorApplyVisitor.java
URL:
http://svn.apache.org/viewvc/jena/trunk/jena-arq/src/main/java/com/hp/hpl/jena/sparql/algebra/optimize/ExprVisitorApplyVisitor.java?rev=1441799&view=auto
==============================================================================
---
jena/trunk/jena-arq/src/main/java/com/hp/hpl/jena/sparql/algebra/optimize/ExprVisitorApplyVisitor.java
(added)
+++
jena/trunk/jena-arq/src/main/java/com/hp/hpl/jena/sparql/algebra/optimize/ExprVisitorApplyVisitor.java
Sat Feb 2 19:53:33 2013
@@ -0,0 +1,41 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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 com.hp.hpl.jena.sparql.algebra.optimize;
+
+import com.hp.hpl.jena.sparql.algebra.OpVisitor ;
+import com.hp.hpl.jena.sparql.expr.ExprFunctionOp ;
+import com.hp.hpl.jena.sparql.expr.ExprVisitorBase ;
+
+/** An expr visitor that applies a OpVisitor to the algebra operator of
E_Exist and E_NoExists */
+public class ExprVisitorApplyVisitor extends ExprVisitorBase
+{
+ // See also ExprTransformer.transform(ExprFunctionOp func, ..) and
ExprTransformOp
+ private final OpVisitor visitor ;
+
+ public ExprVisitorApplyVisitor(OpVisitor visitor)
+ {
+ this.visitor = visitor ;
+ }
+
+ @Override
+ public void visit(ExprFunctionOp funcOp)
+ {
+ funcOp.getGraphPattern().visit(visitor) ;
+ }
+}
