本文整理汇总了Java中de.fuberlin.wiwiss.d2rq.optimizer.expr.TransformExprToSQLApplyer类的典型用法代码示例。如果您正苦于以下问题：Java TransformExprToSQLApplyer类的具体用法？Java TransformExprToSQLApplyer怎么用？Java TransformExprToSQLApplyer使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。
TransformExprToSQLApplyer类属于de.fuberlin.wiwiss.d2rq.optimizer.expr包，在下文中一共展示了TransformExprToSQLApplyer类的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: testLang
import de.fuberlin.wiwiss.d2rq.optimizer.expr.TransformExprToSQLApplyer; //导入依赖的package包/类
public void testLang()
{
List<Triple> pattern = new ArrayList<Triple>();
pattern.add(Triple.create(Node.createVariable("s"), RDFS.label.asNode(), Node.createVariable("o")));
NodeRelation[] rels = translate(pattern, "optimizer/filtertests.n3");
NodeRelation label_fr_be = search("table1", "label_fr_be", rels);
NodeRelation label_en = search("table1", "label_en", rels);
NodeRelation label_noLang = search("table1", "label", rels);
Expr filterFR = new E_Equals(new E_Lang(new ExprVar("o")), NodeValue.makeString("fr"));
Expr filterEN_TAG_EN = new E_Equals(new E_Lang(new ExprVar("o")), NodeValue.makeNode("en", "en", (String) null));
Expr filterFR_BE = new E_Equals(new E_Lang(new ExprVar("o")), NodeValue.makeString("fr-BE"));
Expr filter = new E_Equals(new E_Lang(new ExprVar("o")), NodeValue.makeString(""));
assertEquals("LANG(label_fr_be) = \"fr\" should be FALSE", Expression.FALSE, TransformExprToSQLApplyer.convert(filterFR, label_fr_be));
assertEquals("LANG(label_en) = \"fr\" should be FALSE", Expression.FALSE, TransformExprToSQLApplyer.convert(filterFR, label_en));
assertEquals("LANG(label_fr_be) = \"fr_be\" should be TRUE", Expression.TRUE, TransformExprToSQLApplyer.convert(filterFR_BE, label_fr_be));
assertEquals("LANG(label_en) = \"en\"@en should be FALSE", Expression.FALSE, TransformExprToSQLApplyer.convert(filterEN_TAG_EN, label_en));
assertEquals("LANG(label_noLang) = \"\" should be TRUE", Expression.TRUE, TransformExprToSQLApplyer.convert(filter, label_noLang));
}
示例2: testDataType
import de.fuberlin.wiwiss.d2rq.optimizer.expr.TransformExprToSQLApplyer; //导入依赖的package包/类
public void testDataType()
{
List<Triple> pattern = new ArrayList<Triple>();
pattern.add(Triple.create(Node.createVariable("s"), Node.createURI("http://example.org/value"), Node.createVariable("o")));
NodeRelation[] rels = translate(pattern, "optimizer/filtertests.n3");
NodeRelation intvalue = search("table2", "intvalue", rels);
NodeRelation value = search("table2", "value", rels);
pattern.clear();
pattern.add(Triple.create(Node.createVariable("s"), RDFS.label.asNode(), Node.createVariable("o")));
rels = translate(pattern, "optimizer/filtertests.n3");
NodeRelation langliteral = search("table1", "label_en", rels);
Expr filterint = new E_Equals(new E_Datatype(new ExprVar("o")), NodeValueNode.makeNode(Node.createURI(XSDDatatype.XSDint.getURI())));
Expr filterstring = new E_Equals(new E_Datatype(new ExprVar("o")), NodeValueNode.makeNode(Node.createURI(XSDDatatype.XSDstring.getURI())));
assertEquals("DATATYPE(intliteral) = xsd:int should be TRUE", Expression.TRUE, TransformExprToSQLApplyer.convert(filterint, intvalue));
assertEquals("DATATYPE(simpleliteral) = xsd:string should be TRUE", Expression.TRUE, TransformExprToSQLApplyer.convert(filterstring, value));
assertEquals("DATATYPE(langliteral) = xsd:string should be TRUE", Expression.TRUE, TransformExprToSQLApplyer.convert(filterstring, langliteral));
}
示例3: testDisjunction
import de.fuberlin.wiwiss.d2rq.optimizer.expr.TransformExprToSQLApplyer; //导入依赖的package包/类
public void testDisjunction()
{
List<Triple> pattern = new ArrayList<Triple>();
pattern.add(Triple.create(Node.createVariable("s"), Node.createURI("http://example.org/value"), Node.createVariable("o")));
NodeRelation[] rels = translate(pattern, "optimizer/filtertests.n3");
NodeRelation intvalue = search("table2", "intvalue", rels);
Expr disjunction = new E_LogicalOr(new E_Equals(new ExprVar("o"), NodeValue.makeNode("1", XSDDatatype.XSDint)), new E_Equals(new ExprVar("o"), NodeValue.makeNode("2", XSDDatatype.XSDint)));
Expression result = TransformExprToSQLApplyer.convert(disjunction, intvalue);
TypedNodeMaker nm = (TypedNodeMaker) intvalue.nodeMaker(Var.alloc("o"));
Expression e1 = nm.valueMaker().valueExpression("1");
Expression e2 = nm.valueMaker().valueExpression("2");
Expression expected = e1.or(e2);
assertEquals("?o = \"1\"^^xsd:int || ?o = \"2\"^^xsd:int", expected, result);
}
示例4: applyFilter
import de.fuberlin.wiwiss.d2rq.optimizer.expr.TransformExprToSQLApplyer; //导入依赖的package包/类
private List<NodeRelation> applyFilter(
List<NodeRelation> nodeRelations, Expr filter, ExprList allFilters) {
List<NodeRelation> result = new ArrayList<NodeRelation>();
boolean convertable = true;
for (NodeRelation nodeRelation: nodeRelations) {
// TODO: The transformation from Expr to Expression should happen in NodeRelation.select()
Expression expression = TransformExprToSQLApplyer.convert(filter, nodeRelation);
if (expression == null) {
// the expression cannot be transformed to SQL
convertable = false;
} else if (expression.isTrue()) {
// keep as is
} else if (expression.isFalse()) {
continue; // skip
} else {
nodeRelation = nodeRelation.select(expression);
if (nodeRelation.baseRelation().condition().isFalse()) continue;
}
result.add(nodeRelation);
}
if (convertable) {
log.debug("Removing converted filter: " + filter);
allFilters.getList().remove(filter);
} else {
log.debug("Filter could not be fully converted and is kept: " + filter);
}
return result;
}
示例5: testSameTerm
import de.fuberlin.wiwiss.d2rq.optimizer.expr.TransformExprToSQLApplyer; //导入依赖的package包/类
public void testSameTerm()
{
List<Triple> pattern = new ArrayList<Triple>();
pattern.add(Triple.create(Node.createVariable("s"), Node.createURI("http://example.org/value"), Node.createVariable("o")));
NodeRelation[] rels = translate(pattern, "optimizer/filtertests.n3");
NodeRelation intvalue = search("table2", "intvalue", rels);
Expr sameTerm = new E_SameTerm(new ExprVar("o"), NodeValue.makeNode("1", XSDDatatype.XSDint));
Expression result = TransformExprToSQLApplyer.convert(sameTerm, intvalue);
TypedNodeMaker nm = (TypedNodeMaker) intvalue.nodeMaker(Var.alloc("o"));
Expression expected = nm.valueMaker().valueExpression("1");
assertEquals("sameTerm(?o, \"1\"^^xsd:int)", expected, result);
sameTerm = new E_SameTerm(new ExprVar("o"), NodeValue.makeNode("1", XSDDatatype.XSDdecimal));
result = TransformExprToSQLApplyer.convert(sameTerm, intvalue);
assertEquals("sameTerm(?o, \"1\"^^xsd:decimal)", Expression.FALSE, result);
}