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/**
Copyright (C) SYSTAP, LLC DBA Blazegraph 2006-2016. All rights reserved.
Contact:
SYSTAP, LLC DBA Blazegraph
2501 Calvert ST NW #106
Washington, DC 20008
[email protected]
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 4, 2011
*/
package com.bigdata.rdf.sparql.ast.eval.service;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.openrdf.model.BNode;
import org.openrdf.model.Value;
import org.openrdf.model.impl.BNodeImpl;
import org.openrdf.model.impl.LiteralImpl;
import org.openrdf.model.vocabulary.DC;
import org.openrdf.query.BindingSet;
import org.openrdf.query.impl.MapBindingSet;
import com.bigdata.bop.IVariable;
import com.bigdata.bop.Var;
import com.bigdata.rdf.internal.XSD;
import com.bigdata.rdf.model.BigdataLiteral;
import com.bigdata.rdf.model.BigdataURI;
import com.bigdata.rdf.model.BigdataValue;
import com.bigdata.rdf.sparql.AbstractBigdataExprBuilderTestCase;
import com.bigdata.rdf.sparql.ast.ConstantNode;
import com.bigdata.rdf.sparql.ast.GraphPatternGroup;
import com.bigdata.rdf.sparql.ast.IGroupMemberNode;
import com.bigdata.rdf.sparql.ast.JoinGroupNode;
import com.bigdata.rdf.sparql.ast.StatementPatternNode;
import com.bigdata.rdf.sparql.ast.VarNode;
import com.bigdata.rdf.sparql.ast.service.IRemoteSparqlQueryBuilder;
import com.bigdata.rdf.sparql.ast.service.RemoteServiceOptions;
import com.bigdata.rdf.sparql.ast.service.RemoteSparql10QueryBuilder;
import com.bigdata.rdf.sparql.ast.service.RemoteSparql11DraftQueryBuilder;
import com.bigdata.rdf.sparql.ast.service.RemoteSparql11QueryBuilder;
import com.bigdata.rdf.sparql.ast.service.RemoteSparqlBuilderFactory;
import com.bigdata.rdf.sparql.ast.service.SPARQLVersion;
import com.bigdata.rdf.sparql.ast.service.ServiceNode;
/**
* Test suite the {@link RemoteSparqlBuilderFactory}
*
* @author Bryan Thompson
* @version $Id: TestRemoteServiceCallImpl.java 6060 2012-03-02 16:07:38Z
* thompsonbry $
*/
public class TestRemoteSparqlBuilderFactory extends
AbstractBigdataExprBuilderTestCase {
// private static final Logger log = Logger
// .getLogger(TestRemoteSparqlQueryBuilder.class);
/**
*
*/
public TestRemoteSparqlBuilderFactory() {
}
/**
* @param name
*/
public TestRemoteSparqlBuilderFactory(String name) {
super(name);
}
@SuppressWarnings("unchecked")
private void addResolveIVs(final BigdataValue... values) {
tripleStore.getLexiconRelation()
.addTerms(values, values.length, false/* readOnly */);
/*
* Cache value on IVs to align with behavior of the SPARQL parser.
*
* Note: BatchRDFValueResolver does this, so we have to do it to in
* order to have an exact structural match when we parse the generated
* SPARQL query and then verify the AST model.
*/
for (BigdataValue v : values) {
v.getIV().setValue(v);
}
}
// /**
// * Wrap as an {@link IConstant}.
// *
// * @param iv
// * The {@link IV}.
// *
// * @return The {@link IConstant}.
// */
// private IConstant asConstant(final IV iv) {
//
// return new Constant>(iv);
//
// }
/**
* A simple test with nothing bound and NO source solution. This can be
* handled by either {@link IRemoteSparqlQueryBuilder}.
*/
public void test_service_001() throws Exception {
final BigdataURI serviceURI = valueFactory
.createURI("http://www.bigdata.com/myService");
final GraphPatternGroup groupNode = new JoinGroupNode();
{
groupNode.addChild(new StatementPatternNode(new VarNode("s"),
new VarNode("p"), new VarNode("o")));
}
final String exprImage = "SERVICE <" + serviceURI + "> { ?s ?p ?o }";
final Map prefixDecls = new LinkedHashMap();
{
prefixDecls.put("foo", "http://www.bigdata.com/foo");
}
final ServiceNode serviceNode = new ServiceNode(new ConstantNode(
makeIV(serviceURI)), groupNode);
{
final Set> projectedVars = new LinkedHashSet>();
{
projectedVars.add(Var.var("s"));
projectedVars.add(Var.var("p"));
projectedVars.add(Var.var("o"));
}
serviceNode.setExprImage(exprImage);
serviceNode.setPrefixDecls(prefixDecls);
serviceNode.setProjectedVars(projectedVars);
}
final List bindingSets = new LinkedList();
final BindingSet[] a = bindingSets.toArray(new BindingSet[bindingSets
.size()]);
final RemoteServiceOptions options = new RemoteServiceOptions();
options.setSPARQLVersion(SPARQLVersion.SPARQL_10);
assertEquals(RemoteSparql10QueryBuilder.class,
RemoteSparqlBuilderFactory.get(options, serviceNode, a)
.getClass());
options.setSPARQLVersion(SPARQLVersion.SPARQL_11);
assertEquals(RemoteSparql11QueryBuilder.class,
RemoteSparqlBuilderFactory.get(options, serviceNode, a)
.getClass());
options.setSPARQLVersion(SPARQLVersion.SPARQL_11_DRAFT_BINDINGS);
assertEquals(RemoteSparql11DraftQueryBuilder.class,
RemoteSparqlBuilderFactory.get(options, serviceNode, a)
.getClass());
}
/**
* A simple test with nothing bound and a single empty source
* solution. This can be handled by either {@link IRemoteSparqlQueryBuilder}
* .
*/
public void test_service_001b() throws Exception {
final BigdataURI serviceURI = valueFactory
.createURI("http://www.bigdata.com/myService");
final GraphPatternGroup groupNode = new JoinGroupNode();
{
groupNode.addChild(new StatementPatternNode(new VarNode("s"),
new VarNode("p"), new VarNode("o")));
}
final String exprImage = "SERVICE <" + serviceURI + "> { ?s ?p ?o }";
final Map prefixDecls = new LinkedHashMap();
{
prefixDecls.put("foo", "http://www.bigdata.com/foo");
}
final ServiceNode serviceNode = new ServiceNode(new ConstantNode(
makeIV(serviceURI)), groupNode);
{
final Set> projectedVars = new LinkedHashSet>();
{
projectedVars.add(Var.var("s"));
projectedVars.add(Var.var("p"));
projectedVars.add(Var.var("o"));
}
serviceNode.setExprImage(exprImage);
serviceNode.setPrefixDecls(prefixDecls);
serviceNode.setProjectedVars(projectedVars);
}
final List bindingSets = new LinkedList();
{
bindingSets.add(new MapBindingSet());
}
final BindingSet[] a = bindingSets.toArray(new BindingSet[bindingSets
.size()]);
final RemoteServiceOptions options = new RemoteServiceOptions();
options.setSPARQLVersion(SPARQLVersion.SPARQL_10);
assertEquals(RemoteSparql10QueryBuilder.class,
RemoteSparqlBuilderFactory.get(options, serviceNode, a)
.getClass());
options.setSPARQLVersion(SPARQLVersion.SPARQL_11);
assertEquals(RemoteSparql11QueryBuilder.class,
RemoteSparqlBuilderFactory.get(options, serviceNode, a)
.getClass());
options.setSPARQLVersion(SPARQLVersion.SPARQL_11_DRAFT_BINDINGS);
assertEquals(RemoteSparql11DraftQueryBuilder.class,
RemoteSparqlBuilderFactory.get(options, serviceNode, a)
.getClass());
}
/**
* A test where a single fully bound triple pattern is presented. This can
* be handled by either {@link IRemoteSparqlQueryBuilder}.
*/
public void test_service_002() throws Exception {
/*
* Resolve IVs that we will use below.
*/
final BigdataURI dcCreator = valueFactory.asValue(DC.CREATOR);
final BigdataURI book1 = valueFactory.createURI("http://example.org/book/book1");
final BigdataURI book2 = valueFactory.createURI("http://example.org/book/book2");
final BigdataURI author1 = valueFactory.createURI("http://example.org/author/author1");
final BigdataURI author2 = valueFactory.createURI("http://example.org/author/author2");
addResolveIVs(dcCreator, book1, book2, author1, author2);
final BigdataURI serviceURI = valueFactory
.createURI("http://www.bigdata.com/myService");
final GraphPatternGroup groupNode = new JoinGroupNode();
{
groupNode.addChild(new StatementPatternNode(new VarNode("s"),
new VarNode("p"), new VarNode("o")));
}
final String exprImage = "SERVICE <" + serviceURI + "> { ?s ?p ?o }";
final Map prefixDecls = new LinkedHashMap();
{
prefixDecls.put("foo", "http://www.bigdata.com/foo");
}
final ServiceNode serviceNode = new ServiceNode(new ConstantNode(
makeIV(serviceURI)), groupNode);
{
final Set> projectedVars = new LinkedHashSet>();
{
projectedVars.add(Var.var("s"));
projectedVars.add(Var.var("p"));
projectedVars.add(Var.var("o"));
}
serviceNode.setExprImage(exprImage);
serviceNode.setPrefixDecls(prefixDecls);
serviceNode.setProjectedVars(projectedVars);
}
final List bindingSets = new LinkedList();
{
final MapBindingSet bset = new MapBindingSet();
bset.addBinding("s", book1);
bset.addBinding("p", DC.CREATOR);
bset.addBinding("o", author1);
bindingSets.add(bset);
}
{
final MapBindingSet bset = new MapBindingSet();
bset.addBinding("s", book2);
bset.addBinding("p", DC.CREATOR);
bset.addBinding("o", author2);
bindingSets.add(bset);
}
final BindingSet[] a = bindingSets.toArray(new BindingSet[bindingSets
.size()]);
final RemoteServiceOptions options = new RemoteServiceOptions();
options.setSPARQLVersion(SPARQLVersion.SPARQL_10);
assertEquals(RemoteSparql10QueryBuilder.class,
RemoteSparqlBuilderFactory.get(options, serviceNode, a)
.getClass());
options.setSPARQLVersion(SPARQLVersion.SPARQL_11);
assertEquals(RemoteSparql11QueryBuilder.class,
RemoteSparqlBuilderFactory.get(options, serviceNode, a)
.getClass());
options.setSPARQLVersion(SPARQLVersion.SPARQL_11_DRAFT_BINDINGS);
assertEquals(RemoteSparql11DraftQueryBuilder.class,
RemoteSparqlBuilderFactory.get(options, serviceNode, a)
.getClass());
}
/**
* A variant test in which there are some BINDINGS to be passed through. The
* set of bindings covers the different types of RDF {@link Value} and also
* exercises the prefix declarations. This test does NOT use blank nodes in
* the BINDINGS. This can be handled by either
* {@link IRemoteSparqlQueryBuilder}.
*/
public void test_service_003() throws Exception {
/*
* Resolve IVs that we will use below.
*/
final BigdataURI dcCreator = valueFactory.asValue(DC.CREATOR);
final BigdataURI book1 = valueFactory.createURI("http://example.org/book/book1");
final BigdataURI book2 = valueFactory.createURI("http://example.org/book/book2");
final BigdataLiteral book3 = valueFactory.createLiteral("Semantic Web Primer");
final BigdataLiteral book4 = valueFactory.createLiteral("Semantic Web Primer", "DE");
final BigdataLiteral book5 = valueFactory.createLiteral("12", XSD.INT);
final BigdataLiteral book6 = valueFactory.createLiteral("true", XSD.BOOLEAN);
addResolveIVs(dcCreator, book1, book2, book3, book4, book5, book6);
final BigdataURI serviceURI = valueFactory
.createURI("http://www.bigdata.com/myService");
final GraphPatternGroup groupNode = new JoinGroupNode();
{
groupNode.addChild(new StatementPatternNode(new VarNode("s"),
new VarNode("p"), new VarNode("book")));
}
final String exprImage = "SERVICE <" + serviceURI + "> { ?book ?p ?o}";
final Map prefixDecls = new LinkedHashMap();
{
prefixDecls.put("", "http://example.org/book/");
}
final ServiceNode serviceNode = new ServiceNode(new ConstantNode(
makeIV(serviceURI)), groupNode);
{
final Set> projectedVars = new LinkedHashSet>();
{
projectedVars.add(Var.var("book"));
projectedVars.add(Var.var("p"));
projectedVars.add(Var.var("o"));
}
serviceNode.setExprImage(exprImage);
serviceNode.setPrefixDecls(prefixDecls);
serviceNode.setProjectedVars(projectedVars);
}
final List bindingSets = new LinkedList();
{
final MapBindingSet bset = new MapBindingSet();
bset.addBinding("book", book1);
bindingSets.add(bset);
}
{
final MapBindingSet bset = new MapBindingSet();
bset.addBinding("book", book2);
bindingSets.add(bset);
}
{
final MapBindingSet bset = new MapBindingSet();
bset.addBinding("book", book3);
bindingSets.add(bset);
}
{
final MapBindingSet bset = new MapBindingSet();
bset.addBinding("book", book4);
bindingSets.add(bset);
}
{
final MapBindingSet bset = new MapBindingSet();
bset.addBinding("book", book5);
bindingSets.add(bset);
}
{
final MapBindingSet bset = new MapBindingSet();
bset.addBinding("book", book6);
bindingSets.add(bset);
}
final BindingSet[] a = bindingSets.toArray(new BindingSet[bindingSets
.size()]);
final RemoteServiceOptions options = new RemoteServiceOptions();
options.setSPARQLVersion(SPARQLVersion.SPARQL_10);
assertEquals(RemoteSparql10QueryBuilder.class,
RemoteSparqlBuilderFactory.get(options, serviceNode, a)
.getClass());
options.setSPARQLVersion(SPARQLVersion.SPARQL_11);
assertEquals(RemoteSparql11QueryBuilder.class,
RemoteSparqlBuilderFactory.get(options, serviceNode, a)
.getClass());
options.setSPARQLVersion(SPARQLVersion.SPARQL_11_DRAFT_BINDINGS);
assertEquals(RemoteSparql11DraftQueryBuilder.class,
RemoteSparqlBuilderFactory.get(options, serviceNode, a)
.getClass());
}
/**
* A variant test in there is a blank node in the BINDINGS to be flowed
* through to the remote SERVICE. In this test the blank nodes are not
* correlated so we do not need to impose a FILTER on the remote service.
* This can be handled by either {@link IRemoteSparqlQueryBuilder}.
*/
public void test_service_004() throws Exception {
final BigdataURI serviceURI = valueFactory
.createURI("http://www.bigdata.com/myService");
final GraphPatternGroup groupNode = new JoinGroupNode();
{
groupNode.addChild(new StatementPatternNode(new VarNode("s"),
new VarNode("p"), new VarNode("o")));
}
final String exprImage = "SERVICE <" + serviceURI + "> { ?s ?p ?o }";
final Map prefixDecls = new LinkedHashMap();
final ServiceNode serviceNode = new ServiceNode(new ConstantNode(
makeIV(serviceURI)), groupNode);
{
final Set> projectedVars = new LinkedHashSet>();
{
projectedVars.add(Var.var("s"));
projectedVars.add(Var.var("p"));
projectedVars.add(Var.var("o"));
}
serviceNode.setExprImage(exprImage);
serviceNode.setPrefixDecls(prefixDecls);
serviceNode.setProjectedVars(projectedVars);
}
final List bindingSets = new LinkedList();
/*
* Note: Blank nodes are not permitting in the BINDINGS clause (per the
* SPARQL 1.1 grammar). However, a blank node MAY be turned into an
* unbound variable as long as we impose the constraint that all vars
* having that blank node for a solution are EQ (same term).
*/
{
final MapBindingSet bset = new MapBindingSet();
bset.addBinding("s", new BNodeImpl("abc"));
bindingSets.add(bset);
}
final BindingSet[] a = bindingSets.toArray(new BindingSet[bindingSets
.size()]);
final RemoteServiceOptions options = new RemoteServiceOptions();
options.setSPARQLVersion(SPARQLVersion.SPARQL_10);
assertEquals(RemoteSparql10QueryBuilder.class,
RemoteSparqlBuilderFactory.get(options, serviceNode, a)
.getClass());
options.setSPARQLVersion(SPARQLVersion.SPARQL_11);
assertEquals(RemoteSparql11QueryBuilder.class,
RemoteSparqlBuilderFactory.get(options, serviceNode, a)
.getClass());
options.setSPARQLVersion(SPARQLVersion.SPARQL_11_DRAFT_BINDINGS);
assertEquals(RemoteSparql11DraftQueryBuilder.class,
RemoteSparqlBuilderFactory.get(options, serviceNode, a)
.getClass());
}
/**
* A variant test in there is a blank node in the BINDINGS to be flowed
* through to the remote SERVICE. In this test the blank nodes are
* correlated but there is only one solution to be vectored. This can be
* handled by either {@link IRemoteSparqlQueryBuilder}.
*/
public void test_service_005() throws Exception {
final BigdataURI serviceURI = valueFactory
.createURI("http://www.bigdata.com/myService");
final GraphPatternGroup groupNode = new JoinGroupNode();
{
groupNode.addChild(new StatementPatternNode(new VarNode("s"),
new VarNode("p"), new VarNode("o")));
}
final String exprImage = "SERVICE <" + serviceURI + "> { ?s ?p ?o }";
final Map prefixDecls = new LinkedHashMap();
final ServiceNode serviceNode = new ServiceNode(new ConstantNode(
makeIV(serviceURI)), groupNode);
{
final Set> projectedVars = new LinkedHashSet>();
{
projectedVars.add(Var.var("s"));
projectedVars.add(Var.var("p"));
projectedVars.add(Var.var("o"));
}
serviceNode.setExprImage(exprImage);
serviceNode.setPrefixDecls(prefixDecls);
serviceNode.setProjectedVars(projectedVars);
}
final List bindingSets = new LinkedList();
/*
* Note: Blank nodes are not permitting in the BINDINGS clause (per the
* SPARQL 1.1 grammar). However, a blank node MAY be turned into an
* unbound variable as long as we impose the constraint that all vars
* having that blank node for a solution are EQ (same term).
*
* Note: For this query, the *same* blank node is used for ?s and ?book.
* That needs to be turned into a FILTER which is attached to the remote
* SPARQL query in order to maintain the correlation between those
* variables (FILTER ?s = ?book).
*/
{
final MapBindingSet bset = new MapBindingSet();
final BNode tmp = new BNodeImpl("abc");
bset.addBinding("s", tmp);
bset.addBinding("o", tmp);
bindingSets.add(bset);
}
final BindingSet[] a = bindingSets.toArray(new BindingSet[bindingSets
.size()]);
final RemoteServiceOptions options = new RemoteServiceOptions();
options.setSPARQLVersion(SPARQLVersion.SPARQL_10);
assertEquals(RemoteSparql10QueryBuilder.class,
RemoteSparqlBuilderFactory.get(options, serviceNode, a)
.getClass());
options.setSPARQLVersion(SPARQLVersion.SPARQL_11);
assertEquals(RemoteSparql11QueryBuilder.class,
RemoteSparqlBuilderFactory.get(options, serviceNode, a)
.getClass());
options.setSPARQLVersion(SPARQLVersion.SPARQL_11_DRAFT_BINDINGS);
assertEquals(RemoteSparql11DraftQueryBuilder.class,
RemoteSparqlBuilderFactory.get(options, serviceNode, a)
.getClass());
}
/**
* A variant test in there is a blank node in the BINDINGS to be flowed
* through to the remote SERVICE. In this test the blank nodes are
* correlated but there is only one solution to be vectored so we will
* impose a FILTER on the remote service to enforce that correlation. This
* test differs from the previous test by making more than two variables in
* the SERVICE clause correlated through shared blank nodes. We need to use
* a more complex SERVICE graph pattern to accomplish this since the
* predicate can not be a blank node. This can be handled by either
* {@link IRemoteSparqlQueryBuilder}.
*/
public void test_service_006() throws Exception {
final BigdataURI serviceURI = valueFactory
.createURI("http://www.bigdata.com/myService");
final GraphPatternGroup groupNode = new JoinGroupNode();
{
groupNode.addChild(new StatementPatternNode(new VarNode("s"),
new VarNode("p"), new VarNode("o")));
groupNode.addChild(new StatementPatternNode(new VarNode("s"),
new VarNode("p"), new VarNode("o1")));
}
final String exprImage = "SERVICE <" + serviceURI + "> { ?s ?p ?o . ?s ?p ?o1 }";
final Map prefixDecls = new LinkedHashMap();
final ServiceNode serviceNode = new ServiceNode(new ConstantNode(
makeIV(serviceURI)), groupNode);
{
final Set> projectedVars = new LinkedHashSet>();
{
projectedVars.add(Var.var("s"));
projectedVars.add(Var.var("p"));
projectedVars.add(Var.var("o"));
projectedVars.add(Var.var("o1"));
}
serviceNode.setExprImage(exprImage);
serviceNode.setPrefixDecls(prefixDecls);
serviceNode.setProjectedVars(projectedVars);
}
final List bindingSets = new LinkedList();
/*
* Note: Blank nodes are not permitting in the BINDINGS clause (per the
* SPARQL 1.1 grammar). However, a blank node MAY be turned into an
* unbound variable as long as we impose the constraint that all vars
* having that blank node for a solution are EQ (same term).
*
* Note: For this query, the *same* blank node is used for ?s and ?book.
* That needs to be turned into a FILTER which is attached to the remote
* SPARQL query in order to maintain the correlation between those
* variables (FILTER ?s = ?book).
*/
{
final MapBindingSet bset = new MapBindingSet();
final BNode tmp = new BNodeImpl("abc");
bset.addBinding("s", tmp);
bset.addBinding("o", tmp);
bset.addBinding("o1", tmp);
bindingSets.add(bset);
}
final BindingSet[] a = bindingSets.toArray(new BindingSet[bindingSets
.size()]);
final RemoteServiceOptions options = new RemoteServiceOptions();
options.setSPARQLVersion(SPARQLVersion.SPARQL_10);
assertEquals(RemoteSparql10QueryBuilder.class,
RemoteSparqlBuilderFactory.get(options, serviceNode, a)
.getClass());
options.setSPARQLVersion(SPARQLVersion.SPARQL_11);
assertEquals(RemoteSparql11QueryBuilder.class,
RemoteSparqlBuilderFactory.get(options, serviceNode, a)
.getClass());
options.setSPARQLVersion(SPARQLVersion.SPARQL_11_DRAFT_BINDINGS);
assertEquals(RemoteSparql11DraftQueryBuilder.class,
RemoteSparqlBuilderFactory.get(options, serviceNode, a)
.getClass());
}
/**
* A variant test in there is a blank node in the BINDINGS to be flowed
* through to the remote SERVICE. In this test the blank nodes are
* correlated and there is more than one solution to be vectored.
*
* This case is only handled by the {@link RemoteSparql10QueryBuilder}.
*/
public void test_service_007() throws Exception {
final BigdataURI serviceURI = valueFactory
.createURI("http://www.bigdata.com/myService");
final GraphPatternGroup groupNode = new JoinGroupNode();
{
groupNode.addChild(new StatementPatternNode(new VarNode("s"),
new VarNode("p"), new VarNode("o")));
}
final String exprImage = "SERVICE <" + serviceURI + "> { ?s ?p ?o }";
final Map prefixDecls = new LinkedHashMap();
final ServiceNode serviceNode = new ServiceNode(new ConstantNode(
makeIV(serviceURI)), groupNode);
{
final Set> projectedVars = new LinkedHashSet>();
{
projectedVars.add(Var.var("s"));
projectedVars.add(Var.var("p"));
projectedVars.add(Var.var("o"));
}
serviceNode.setExprImage(exprImage);
serviceNode.setPrefixDecls(prefixDecls);
serviceNode.setProjectedVars(projectedVars);
}
final List bindingSets = new LinkedList();
/*
* Note: Blank nodes are not permitting in the BINDINGS clause (per the
* SPARQL 1.1 grammar). However, a blank node MAY be turned into an
* unbound variable as long as we impose the constraint that all vars
* having that blank node for a solution are EQ (same term).
*
* Note: For this query, the *same* blank node is used for ?s and ?book.
* That needs to be turned into a FILTER which is attached to the remote
* SPARQL query in order to maintain the correlation between those
* variables (FILTER ?s = ?book).
*/
{
final MapBindingSet bset = new MapBindingSet();
final BNode tmp = new BNodeImpl("abc");
bset.addBinding("s", tmp);
bset.addBinding("o", tmp);
bindingSets.add(bset);
}
{ // A 2nd solution is required to force the correlated var/bnode issue.
final MapBindingSet bset = new MapBindingSet();
bset.addBinding("s", new LiteralImpl("Semantic Web Primer"));
bindingSets.add(bset);
}
final BindingSet[] a = bindingSets.toArray(new BindingSet[bindingSets
.size()]);
final RemoteServiceOptions options = new RemoteServiceOptions();
options.setSPARQLVersion(SPARQLVersion.SPARQL_10);
assertEquals(RemoteSparql10QueryBuilder.class,
RemoteSparqlBuilderFactory.get(options, serviceNode, a)
.getClass());
options.setSPARQLVersion(SPARQLVersion.SPARQL_11);
/*
* Still uses the SPARQL 1.0 query builder since it will not rely on the
* BINDINGS clause.
*/
assertEquals(RemoteSparql10QueryBuilder.class,
RemoteSparqlBuilderFactory.get(options, serviceNode, a)
.getClass());
options.setSPARQLVersion(SPARQLVersion.SPARQL_11_DRAFT_BINDINGS);
/*
* Still uses the SPARQL 1.0 query builder since it will not rely on the
* BINDINGS clause.
*/
assertEquals(RemoteSparql10QueryBuilder.class,
RemoteSparqlBuilderFactory.get(options, serviceNode, a)
.getClass());
}
/**
* A variant test in there is a blank node in the BINDINGS to be flowed
* through to the remote SERVICE. In this test the blank nodes are
* correlated so we MUST impose a constraint on the remote service to
* enforce that correlation. However, there is another solution in which the
* two variables are NOT correlated so that FILTER MUST NOT be imposed
* across all such solutions. Therefore the SERVICE class will be vectored
* by rewriting it into a UNION with different variable names in each
* variant of the UNION.
*
* This case is only handled by the {@link RemoteSparql10QueryBuilder}.
*/
public void test_service_008() throws Exception {
final BigdataURI serviceURI = valueFactory
.createURI("http://www.bigdata.com/myService");
final GraphPatternGroup groupNode = new JoinGroupNode();
{
groupNode.addChild(new StatementPatternNode(new VarNode("s"),
new VarNode("p"), new VarNode("o")));
}
final String exprImage = "SERVICE <" + serviceURI + "> { ?s ?p ?o }";
final Map prefixDecls = new LinkedHashMap();
final ServiceNode serviceNode = new ServiceNode(new ConstantNode(
makeIV(serviceURI)), groupNode);
{
final Set> projectedVars = new LinkedHashSet>();
{
projectedVars.add(Var.var("s"));
projectedVars.add(Var.var("p"));
projectedVars.add(Var.var("o"));
}
serviceNode.setExprImage(exprImage);
serviceNode.setPrefixDecls(prefixDecls);
serviceNode.setProjectedVars(projectedVars);
}
final List bindingSets = new LinkedList();
/*
* Note: Blank nodes are not permitting in the BINDINGS clause (per the
* SPARQL 1.1 grammar). However, a blank node MAY be turned into an
* unbound variable as long as we impose the constraint that all vars
* having that blank node for a solution are EQ (same term).
*
* Note: For this query, the *same* blank node is used for ?s and ?book.
* That needs to be turned into a FILTER which is attached to the remote
* SPARQL query in order to maintain the correlation between those
* variables (FILTER ?s = ?book).
*/
{ // Note: Blank nodes ARE correlated for this solution.
final MapBindingSet bset = new MapBindingSet();
final BNode tmp = new BNodeImpl("abc");
bset.addBinding("s", tmp);
bset.addBinding("o", tmp);
bindingSets.add(bset);
}
{ // Note: Blank nodes are NOT correlated for this solution.
final MapBindingSet bset = new MapBindingSet();
final BNode tmp1 = new BNodeImpl("foo");
final BNode tmp2 = new BNodeImpl("bar");
bset.addBinding("s", tmp1);
bset.addBinding("o", tmp2);
bindingSets.add(bset);
}
final BindingSet[] a = bindingSets.toArray(new BindingSet[bindingSets
.size()]);
final RemoteServiceOptions options = new RemoteServiceOptions();
options.setSPARQLVersion(SPARQLVersion.SPARQL_10);
assertEquals(RemoteSparql10QueryBuilder.class,
RemoteSparqlBuilderFactory.get(options, serviceNode, a)
.getClass());
options.setSPARQLVersion(SPARQLVersion.SPARQL_11);
/*
* Still uses the SPARQL 1.0 query builder since it will not rely on the
* BINDINGS clause.
*/
assertEquals(RemoteSparql10QueryBuilder.class,
RemoteSparqlBuilderFactory.get(options, serviceNode, a)
.getClass());
options.setSPARQLVersion(SPARQLVersion.SPARQL_11_DRAFT_BINDINGS);
/*
* Still uses the SPARQL 1.0 query builder since it will not rely on the
* BINDINGS clause.
*/
assertEquals(RemoteSparql10QueryBuilder.class,
RemoteSparqlBuilderFactory.get(options, serviceNode, a)
.getClass());
}
public void test_service_009() throws Exception {
final BigdataURI serviceURI = valueFactory
.createURI("http://www.bigdata.com/myService");
final String exprImage = "SERVICE <" + serviceURI + "> { ?s ?p ?o }";
final Map prefixDecls = new LinkedHashMap();
final GraphPatternGroup groupNode = new JoinGroupNode();
{
groupNode.addChild(new StatementPatternNode(new VarNode("s"),
new VarNode("p"), new VarNode("o")));
}
final ServiceNode serviceNode = new ServiceNode(new ConstantNode(
makeIV(serviceURI)), groupNode);
{
final Set> projectedVars = new LinkedHashSet>();
{
projectedVars.add(Var.var("s"));
}
serviceNode.setExprImage(exprImage);
serviceNode.setPrefixDecls(prefixDecls);
serviceNode.setProjectedVars(projectedVars);
}
final List bindingSets = new LinkedList();
{
final MapBindingSet bset = new MapBindingSet();
final BigdataURI tmp1 = valueFactory.createURI("p:p1");
final BigdataLiteral tmp2 = valueFactory.createLiteral("lit1");
bset.addBinding("p", tmp1);
bset.addBinding("o", tmp2);
bindingSets.add(bset);
}
final BindingSet[] a = bindingSets.toArray(new BindingSet[bindingSets
.size()]);
final RemoteServiceOptions options = new RemoteServiceOptions();
options.setSPARQLVersion(SPARQLVersion.SPARQL_10);
IRemoteSparqlQueryBuilder queryBuilder = RemoteSparqlBuilderFactory.get(options, serviceNode, a);
final String actualQueryStrVersion_10 = queryBuilder.getSparqlQuery(a).replaceAll("\\s+", " ");
final String expectedSparqlVersion_10 = new String("SELECT ?s " +
"WHERE { " + //
"FILTER ( sameTerm( ?p, ) ). " + //
"FILTER ( sameTerm( ?o, \"lit1\") ). " + //
" ?s ?p ?o " + //
"} ").replaceAll("\\s+", " ");
assertEquals(expectedSparqlVersion_10, actualQueryStrVersion_10);
options.setSPARQLVersion(SPARQLVersion.SPARQL_11);
queryBuilder = RemoteSparqlBuilderFactory.get(options, serviceNode, a);
final String actualQueryStrVersion_11 = queryBuilder.getSparqlQuery(a).replaceAll("\\s+", " ");
final String expectedSparqlVersion_11 = new String("SELECT ?s " + //
"WHERE {" + //
" ?s ?p ?o " + //
"} " + //
"VALUES ( ?p ?o) { " + //
"( \"lit1\" ) " + //
"} ").replaceAll("\\s+", " ");
assertEquals(expectedSparqlVersion_11, actualQueryStrVersion_11);
options.setSPARQLVersion(SPARQLVersion.SPARQL_11_DRAFT_BINDINGS);
queryBuilder = RemoteSparqlBuilderFactory.get(options, serviceNode, a);
final String actualQueryStrVersion_11_DRAFT_BINDINGS = queryBuilder.getSparqlQuery(a).replaceAll("\\s+", " ");
final String expectedSparqlVersion_11_DRAFT_BINDINGS = new String("SELECT ?s " + //
"WHERE {" + //
" ?s ?p ?o " + //
"} " + //
"BINDINGS ?p ?o { " + //
"( \"lit1\" ) " + //
"} ").replaceAll("\\s+", " ");
assertEquals(actualQueryStrVersion_11_DRAFT_BINDINGS, expectedSparqlVersion_11_DRAFT_BINDINGS);
}
}