GH-3253: Apply transforms to present Elements of ExprFunctionOp instances. #3254
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,67 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
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| package org.apache.jena.sparql.expr; | ||
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| import static org.junit.Assert.assertEquals; | ||
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| import org.apache.jena.sparql.algebra.walker.Walker; | ||
| import org.apache.jena.sparql.expr.TestExprFunctionOp_NodeTransform.ExprFunctionOpValidator; | ||
| import org.apache.jena.sparql.util.ExprUtils; | ||
| import org.junit.Assert; | ||
| import org.junit.Test; | ||
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| public class TestExprFunctionOp_ExprTransform { | ||
| private ExprTransform et = new ExprTransformCopy() | ||
| { @Override | ||
| public Expr transform(ExprVar exprVar) | ||
| { return new ExprVar(exprVar.getVarName().toUpperCase()) ; } | ||
| }; | ||
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| @Test public void et_exists_tp_01() { test( "exists { ?s ?p ?o }", "exists { ?s ?p ?o }", et); } | ||
| @Test public void et_notExists_tp_01() { test("not exists { ?s ?p ?o }", "notexists { ?s ?p ?o }", et); } | ||
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| // Note: The empty graph pattern in "{} FILTER(...)" is used to establish | ||
| // syntactic equivalence with the transformation result. | ||
| @Test public void et_exists_filter_01() { test( "exists { {} FILTER(?x = ?y) }", "exists { {} FILTER(?X = ?Y) }", et); } | ||
| @Test public void et_notExists_filter_01() { test("not exists { {} FILTER(?x = ?y) }", "not exists { {} FILTER(?X = ?Y) }", et); } | ||
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| @Test public void et_exists_bind_01() { test( "exists { BIND(?x AS ?y) }", "exists { BIND(?X AS ?y) }", et); } | ||
| @Test public void et_notExists_bind_01() { test("not exists { BIND(?x AS ?y) }", "not exists { BIND(?X AS ?y) }", et); } | ||
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| @Test public void et_exists_nested_filter_01() { test( "exists { {} FILTER exists { {} FILTER(?x = ?y) } }", "exists { {} FILTER exists { {} FILTER(?X = ?Y) } }", et); } | ||
| @Test public void et_notExists_nested_filter_01() { test("not exists { {} FILTER not exists { {} FILTER(?x = ?y) } }", "not exists { {} FILTER not exists { {} FILTER(?X = ?Y) } }", et); } | ||
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| private void test(String string, String string2, ExprTransform et) | ||
| { | ||
| Expr e1 = ExprUtils.parse(string) ; | ||
| Expr e2 = ExprUtils.parse(string2) ; | ||
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| Expr e3 = ExprTransformer.transform(et, e1); | ||
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| // Check whether syntax and algebra are consistent | ||
| ExprVisitor opVisitor = new ExprFunctionOpValidator(); | ||
| Walker.walk(e2, opVisitor); | ||
| Walker.walk(e3, opVisitor); | ||
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| assertEquals(e2, e3) ; | ||
| if(!e2.equalsBySyntax(e3)) { | ||
| Assert.fail("Objects differ by syntax: " + e2 + " != " + e3); | ||
| } | ||
| } | ||
| } |
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Could copySubstitute in principle delegate to applyNodeTransform with a NodeTransform based on the binding? Or are there subtle semantic difference?