public void ConstraintBound()
{
MemoryTripleStore statements = new MemoryTripleStore();
statements.Add(new Statement(new UriRef("ex:s"), new UriRef("ex:p"), new UriRef("ex:o")));
SimpleQueryBuilder builder = new SimpleQueryBuilder();
builder.AddPattern(new Pattern(new UriRef("ex:s"), new UriRef("ex:p"), new Variable("v")));
builder.AddConstraint(new Constraint(new Bound(new Variable("v"))));
Query query = builder.GetQuery();
QuerySqlMapper mapper = new QuerySqlMapper(query, statements);
string expected =
"SELECT rn_v.resourceHash rh_v, rn_v.nodeHash nh_v, rn_v.nodeType nt_v, COALESCE(u_v.uri, pl_v.value, l_v.value) val_v, COALESCE(tl_v.value, t_v.value) sub_v " +
"FROM Statements s1 JOIN ResourceNodes rn_v ON rn_v.resourceHash=s1.objectHash AND rn_v.graphId=s1.graphId " +
"LEFT OUTER JOIN UriRefs u_v ON rn_v.nodeHash=u_v.hash AND rn_v.nodeType='u' " +
"LEFT OUTER JOIN PlainLiterals pl_v ON rn_v.nodeHash=pl_v.hash AND rn_v.nodeType='p' " +
"LEFT OUTER JOIN Languages l_v ON pl_v.languageHash=l_v.hash " +
"LEFT OUTER JOIN TypedLiterals tl_v ON rn_v.nodehash=tl_v.hash AND rn_v.nodeType='t' " +
"LEFT OUTER JOIN DataTypes t_v ON tl_v.datatypeHash=t_v.hash " +
"WHERE s1.subjectHash=" + statements.GetResourceDenotedBy(new UriRef("ex:s")).GetHashCode() +
" AND s1.predicateHash=" + statements.GetResourceDenotedBy(new UriRef("ex:p")).GetHashCode() +
" AND s1.graphId=" + statements.GetHashCode() +
" AND s1.objectHash IS NOT NULL";
Assert.AreEqual(expected, mapper.Sql);
}
public void SingleStatementPlusUnmatchableOptionalStatementWithVariable()
{
MemoryTripleStore statements = new MemoryTripleStore();
statements.Add(new Statement(new UriRef("ex:s"), new UriRef("ex:p"), new UriRef("ex:o")));
SimpleQueryBuilder builder = new SimpleQueryBuilder();
builder.AddPattern(new Pattern(new Variable("v"), new UriRef("ex:p"), new UriRef("ex:o")));
builder.AddOptional(new Pattern(new Variable("v"), new UriRef("ex:p2"), new Variable("o")));
Query query = builder.GetQuery();
QuerySqlMapper mapper = new QuerySqlMapper(query, statements);
string expected =
"SELECT rn_v.resourceHash rh_v, rn_v.nodeHash nh_v, rn_v.nodeType nt_v, u_v.uri val_v, NULL sub_v, NULL rh_o, NULL nh_o, NULL nt_o, NULL val_o, NULL sub_o " +
"FROM Statements s1 JOIN ResourceNodes rn_v ON rn_v.resourceHash=s1.subjectHash AND rn_v.graphId=s1.graphId " +
"LEFT OUTER JOIN UriRefs u_v ON rn_v.nodeHash=u_v.hash AND rn_v.nodeType='u' " +
"WHERE s1.predicateHash=" + statements.GetResourceDenotedBy(new UriRef("ex:p")).GetHashCode() +
" AND s1.objectHash=" + statements.GetResourceDenotedBy(new UriRef("ex:o")).GetHashCode() +
" AND s1.graphId=" + statements.GetHashCode();
Assert.AreEqual(expected, mapper.Sql);
}
public void SingleStatementTwoVariables()
{
MemoryTripleStore statements = new MemoryTripleStore();
statements.Add(new Statement(new UriRef("ex:s"), new UriRef("ex:p"), new UriRef("ex:o")));
SimpleQueryBuilder builder = new SimpleQueryBuilder();
builder.AddPattern(new Pattern(new Variable("s"), new UriRef("ex:p"), new Variable("o")));
Query query = builder.GetQuery();
QuerySqlMapper mapper = new QuerySqlMapper(query, statements);
string expected =
"SELECT rn_s.resourceHash rh_s, rn_s.nodeHash nh_s, rn_s.nodeType nt_s, u_s.uri val_s, NULL sub_s, rn_o.resourceHash rh_o, rn_o.nodeHash nh_o, rn_o.nodeType nt_o, COALESCE(u_o.uri, pl_o.value, l_o.value) val_o, COALESCE(tl_o.value, t_o.value) sub_o " +
"FROM Statements s1 JOIN ResourceNodes rn_s ON rn_s.resourceHash=s1.subjectHash AND rn_s.graphId=s1.graphId " +
"LEFT OUTER JOIN UriRefs u_s ON rn_s.nodeHash=u_s.hash AND rn_s.nodeType='u' " +
"JOIN ResourceNodes rn_o ON rn_o.resourceHash=s1.objectHash AND rn_o.graphId=s1.graphId " +
"LEFT OUTER JOIN UriRefs u_o ON rn_o.nodeHash=u_o.hash AND rn_o.nodeType='u' " +
"LEFT OUTER JOIN PlainLiterals pl_o ON rn_o.nodeHash=pl_o.hash AND rn_o.nodeType='p' " +
"LEFT OUTER JOIN Languages l_o ON pl_o.languageHash=l_o.hash " +
"LEFT OUTER JOIN TypedLiterals tl_o ON rn_o.nodehash=tl_o.hash AND rn_o.nodeType='t' " +
"LEFT OUTER JOIN DataTypes t_o ON tl_o.datatypeHash=t_o.hash " +
"WHERE s1.predicateHash=" + statements.GetResourceDenotedBy(new UriRef("ex:p")).GetHashCode() +
" AND s1.graphId=" + statements.GetHashCode();
Assert.AreEqual(expected, mapper.Sql);
}
public void NoPatterns()
{
MemoryTripleStore statements = new MemoryTripleStore();
statements.Add(new Statement(new UriRef("ex:s"), new UriRef("ex:p"), new UriRef("ex:o")));
SimpleQueryBuilder builder = new SimpleQueryBuilder();
Query query = builder.GetQuery();
QuerySqlMapper mapper = new QuerySqlMapper(query, statements);
Assert.AreEqual(false, mapper.IsFeasible);
}
public void SingleStatementPlusMultipleOptionalStatementsInOneGroup()
{
MemoryTripleStore statements = new MemoryTripleStore();
statements.Add(new Statement(new UriRef("ex:s"), new UriRef("ex:p"), new UriRef("ex:o")));
statements.Add(new Statement(new UriRef("ex:s"), new UriRef("ex:p2"), new UriRef("ex:o2")));
SimpleQueryBuilder builder = new SimpleQueryBuilder();
builder.AddPattern(new Pattern(new Variable("v"), new UriRef("ex:p"), new UriRef("ex:o")));
builder.AddOptional(new Pattern(new Variable("v"), new Variable("p"), new UriRef("ex:o2")));
builder.AddOptional(new Pattern(new Variable("v"), new Variable("p"), new UriRef("ex:o")));
Query query = builder.GetQuery();
QuerySqlMapper mapper = new QuerySqlMapper(query, statements);
string expected =
"SELECT rn_v.resourceHash rh_v, rn_v.nodeHash nh_v, rn_v.nodeType nt_v, u_v.uri val_v, NULL sub_v, rn_p.resourceHash rh_p, rn_p.nodeHash nh_p, rn_p.nodeType nt_p, u_p.uri val_p, NULL sub_p " +
"FROM Statements s1 " +
"LEFT OUTER JOIN Statements s2" +
" ON s2.subjectHash=s1.subjectHash" +
" AND s2.objectHash=" + statements.GetResourceDenotedBy(new UriRef("ex:o2")).GetHashCode() +
" AND s2.graphId=" + statements.GetHashCode() +
" JOIN Statements s3" +
" ON s3.subjectHash=s2.subjectHash" +
" AND s3.predicateHash=s2.predicateHash" +
" AND s3.objectHash=" + statements.GetResourceDenotedBy(new UriRef("ex:o")).GetHashCode() +
" AND s3.graphId=" + statements.GetHashCode() +
" JOIN ResourceNodes rn_v ON rn_v.resourceHash=s1.subjectHash AND rn_v.graphId=s1.graphId " +
"LEFT OUTER JOIN UriRefs u_v ON rn_v.nodeHash=u_v.hash AND rn_v.nodeType='u' " +
"JOIN ResourceNodes rn_p ON rn_p.resourceHash=s2.predicateHash AND rn_p.graphId=s2.graphId " +
"LEFT OUTER JOIN UriRefs u_p ON rn_p.nodeHash=u_p.hash AND rn_p.nodeType='u' " +
"WHERE s1.predicateHash=" + statements.GetResourceDenotedBy(new UriRef("ex:p")).GetHashCode() +
" AND s1.objectHash=" + statements.GetResourceDenotedBy(new UriRef("ex:o")).GetHashCode() +
" AND s1.graphId=" + statements.GetHashCode();
Assert.AreEqual(expected, mapper.Sql);
}