/**
Copyright (C) SYSTAP, LLC DBA Blazegraph 2006-2016. All rights reserved.
Contact:
SYSTAP, LLC DBA Blazegraph
2501 Calvert ST NW #106
Washington, DC 20008
licenses@blazegraph.com
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
*/
/*
* Created on Sep 7, 2011
*/
package com.bigdata.rdf.sparql.ast.eval;
import com.bigdata.rdf.internal.constraints.INeedsMaterialization;
/**
* Port of unit tests originally written at the AST layer.
*
* @author <a href="mailto:thompsonbry@users.sourceforge.net">Bryan Thompson</a>
* @version $Id$
*/
public class TestAST extends AbstractDataDrivenSPARQLTestCase {
/**
*
*/
public TestAST() {
}
/**
* @param name
*/
public TestAST(String name) {
super(name);
}
/**
* <pre>
* select ?s where { ?s ?p ?o }
* </pre>
*
* Note: This is a port of TestASTTriplesModeEvaluation#testAST() (as are
* all of the ast_01x methods).
*/
public void test_ast_01() throws Exception {
new TestHelper("ast_01").runTest();
}
/**
* <pre>
* select ?s where { ?s ?p ?o } order by ?s limit 1
* </pre>
*
* Note: I had to add an ORDER BY into this method in order to make the
* results stable. The original unit test only checked the #of results but
* not their data.
*/
public void test_ast_01b() throws Exception {
new TestHelper("ast_01b").runTest();
}
/**
* <pre>
* select DISTINCT ?s where { ?s ?p ?o }
* </pre>
*/
public void test_ast_01c() throws Exception {
new TestHelper("ast_01c").runTest();
}
/**
* <pre>
* select (count(*) as ?count) where { ?s ?p ?o } limit 1
* </pre>
*/
public void test_ast_01d() throws Exception {
new TestHelper("ast_01d").runTest();
}
/**
* <pre>
* select ?s ?o
* where {
* ?s rdf:type :C .
* OPTIONAL {
* ?s :B ?o
* }
* }
* </pre>
*
* Note: This is a port of
* TestASTTriplesModeEvaluation#testOptionalDistinct() (as are all of the
* ast_02x methods).
*/
public void test_ast_02() throws Exception {
new TestHelper("ast_02").runTest();
}
/**
* <pre>
* select DISTINCT ?s ?o
* where {
* ?s rdf:type :C .
* OPTIONAL {
* ?s :B ?o
* }
* }
* </pre>
*/
public void test_ast_02b() throws Exception {
new TestHelper("ast_02b").runTest();
}
/**
* <pre>
* select ?index
* where {
* ?s rdf:type :C .
* ?s :predicate1 ?o .
* }
* GROUP BY (?o+1 as ?index)
* </pre>
*
* Note: This is a port of
* TestASTTriplesModeEvaluation#testProjectedGroupWithConstant().
*/
public void test_ast_03() throws Exception {
new TestHelper("ast_03").runTest();
}
/**
* Unit test developed to demonstrate a problem where the incorrect
* materialization requirements are computed.
* <p>
* I just happened to run into an issue dealing with materialization. Say I
* have a constraint that needs materialization, <code>Str(...)</code> If
* that constraint has as its arg another constraint:
* <code>Coalesce (?x,?y)</code> [this returns the first none null value in
* the list of ?x,?y]
* <p>
* Its seems that the logic that determines the extra materialization steps
* doesn't handle the fact that Coalesce (?x,?y) doesn't need any
* materialization, so never sets the {@link INeedsMaterialization}
* interface, so the result of that valueExpression is going to be either ?x
* or ?y, and Str does need those variables materialized, but the
* materialization steps would never have seem that lists of terms(?x,?y) as
* something that needs materialization. Does the fact that a
* ValueExpression returns a non computed IV value, ie returns one of its
* arguments, have to be captured in order to somehow handle this?
*
* <pre>
*
* QueryType: SELECT
* SELECT VarNode(index)
* JoinGroupNode {
* StatementPatternNode(VarNode(s), ConstantNode(TermId(4U)), ConstantNode(TermId(2U)), DEFAULT_CONTEXTS)
* StatementPatternNode(VarNode(s), ConstantNode(TermId(5U)), VarNode(o), DEFAULT_CONTEXTS)
* ( com.bigdata.rdf.sparql.ast.ValueExpressionNode()[ valueExpr=com.bigdata.rdf.internal.constraints.StrBOp(com.bigdata.rdf.internal.constraints.CoalesceBOp(s,o))[ com.bigdata.rdf.internal.constraints.StrBOp.namespace=kb]] AS VarNode(index) )
* }
* </pre>
*
* Note: This is a port of
* TestASTTriplesModeEvaluation#testProjectedGroupByWithNestedVars()
*/
public void test_ast_04() throws Exception {
new TestHelper("ast_04").runTest();
}
public void test_materialization_extensions() throws Exception {
new TestHelper("materialization-extensions").runTest();
}
}