org.openrdf.query.algebra.ValueConstant Java Examples

The following examples show how to use org.openrdf.query.algebra.ValueConstant. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example #1

Source File: PropertySetElem.java From database with GNU General Public License v2.0

4 votes

/**
 * @param predicate The predicate to set.
 */
public void setPredicate(ValueConstant predicate) {
	this.predicate = predicate;
}

Example #2

Source File: PropertySetElem.java From database with GNU General Public License v2.0

4 votes

/**
 * @return Returns the predicate.
 */
public ValueConstant getPredicate() {
	return predicate;
}

Example #3

Source File: SeenVisitor.java From neo4j-sparql-extension with GNU General Public License v3.0

4 votes

@Override
public void meet(ValueConstant node) throws RuntimeException {
	setSeen(node);
	super.meet(node);
}

Example #4

Source File: ConsistencyVisitor.java From neo4j-sparql-extension with GNU General Public License v3.0

4 votes

@Override
public void meet(ValueConstant node) throws RuntimeException {
	check(node);
	super.meet(node);
}

Example #5

Source File: Rule.java From quetzal with Eclipse Public License 2.0

4 votes

private void extractConsequent(TupleExpr constructQuery, Projection projection, Extension extension) {
	StatementPattern consequent = new StatementPattern();
	Var sub = new Var();
	Var pred = new Var();
	Var obj = new Var();
	
	HashMap<String, ValueConstant> index = new HashMap<String, ValueConstant>();
	for (ExtensionElem extElem: extension.getElements()) {
		try {
			index.put(extElem.getName(), (ValueConstant) extElem.getExpr());
		} catch (ClassCastException e) {
			e.printStackTrace();
			throw new RuntimeException("Unsupported construct query rule: \n" + constructQuery.toString());
		}
	}
	
	for (ProjectionElem elem: projection.getProjectionElemList().getElements()) {
		Var currentComponent = null;
		if (elem.getTargetName().equals("subject")) {
			currentComponent = sub;
		} else if (elem.getTargetName().equals("predicate")) {
			currentComponent = pred;
		} else if (elem.getTargetName().equals("object")) {
			currentComponent = obj;
		} else {
			throw new RuntimeException("Unsupported construct query rule: " + constructQuery.toString());
		}
		
		ValueConstant valueConstant = index.get(elem.getSourceName());
		if (valueConstant != null) {
			currentComponent.setConstant(true);
			currentComponent.setValue(valueConstant.getValue());
			currentComponent.setName(elem.getSourceName());
		} else {
			currentComponent.setConstant(false);
			currentComponent.setName(elem.getSourceName());
		}
	}
	
	consequent.setSubjectVar(sub);
	consequent.setPredicateVar(pred);
	consequent.setObjectVar(obj);

	this.consequent = consequent;
}