Examples with EdgeBinding com.inova8.intelligentgraph.path.EdgeBinding used on opensource projects

Example 1 with EdgeBinding

use of com.inova8.intelligentgraph.path.EdgeBinding in project com.inova8.intelligentgraph by peterjohnlawrence.

the class PredicateElement method pathPredicatePatternTupleExpr.

/**
 * Path predicate pattern tuple expr.
 *
 * @param predicatePattern the predicate pattern
 * @param intermediateSourceVariable the intermediate source variable
 * @param intermediatePredicateVariable the intermediate predicate variable
 * @param intermediateTargetVariable the intermediate target variable
 * @param customQueryOptions the custom query options
 * @return the path tuple expr
 */
private PathTupleExpr pathPredicatePatternTupleExpr(PathTupleExpr predicatePattern, Variable intermediateSourceVariable, Variable intermediatePredicateVariable, Variable intermediateTargetVariable, CustomQueryOptions customQueryOptions) {
    TupleExpr intermediatePredicatePattern;
    Variable predicateVariable;
    if (isNegated) {
        predicateVariable = new Variable(getPredicateSPARQLVariable());
        // TODO
        Variable variable = new Variable("p2", predicate);
        if (isInverseOf) {
            StatementPattern inverseOfPattern = new StatementPattern(intermediateTargetVariable, predicateVariable, intermediateSourceVariable);
            Compare filterExpression = new Compare(predicateVariable, variable, CompareOp.NE);
            intermediatePredicatePattern = new Filter(inverseOfPattern, filterExpression);
        } else {
            intermediatePredicatePattern = new StatementPattern(intermediateSourceVariable, predicateVariable, intermediateTargetVariable);
        }
    } else {
        intermediatePredicateVariable.setValue(predicate);
        // Variable(getPredicateSPARQLVariable(), predicate);
        predicateVariable = intermediatePredicateVariable;
        if (isInverseOf) {
            intermediatePredicatePattern = new StatementPattern(intermediateTargetVariable, predicateVariable, intermediateSourceVariable);
        } else {
            intermediatePredicatePattern = new StatementPattern(intermediateSourceVariable, predicateVariable, intermediateTargetVariable);
        }
    }
    if (objectFilterElement != null) {
        intermediatePredicatePattern = (TupleExpr) objectFilterElement.filterExpression(intermediateTargetVariable, intermediatePredicateVariable, null, intermediatePredicatePattern, customQueryOptions).getTupleExpr();
    }
    // EdgeBinding
    statementBinding = new StatementBinding(intermediateSourceVariable, predicateVariable, intermediateTargetVariable, getIsInverseOf());
    if (predicatePattern == null) {
        predicatePattern = new PathTupleExpr(intermediatePredicatePattern);
    // predicatePattern.setStatementBinding(statementBinding);
    } else {
        predicatePattern.setTupleExpr(new Join(predicatePattern.getTupleExpr(), intermediatePredicatePattern));
    }
    predicatePattern.setStatementBinding(statementBinding);
    predicatePattern.setBoundVariable(predicatePattern.getStatementBinding().getSourceVariable());
    predicatePattern.getPath().add(statementBinding);
    return predicatePattern;
}

Example 2 with EdgeBinding

use of com.inova8.intelligentgraph.path.EdgeBinding in project com.inova8.intelligentgraph by peterjohnlawrence.

the class IntelligentStatementPaths method pathToLiteral.

/**
 * Path to literal.
 *
 * @param bindingset the bindingset
 * @return the literal
 */
private Literal pathToLiteral(BindingSet bindingset) {
    ModelBuilder builder = new ModelBuilder();
    builder.setNamespace("", PATHQL.NAMESPACE);
    PathBinding thisPathBinding = pathTupleExpr.getPath();
    for (EdgeBinding edge : thisPathBinding) {
        edge.addEdgeToPathModel(builder, bindingset);
    }
    Model pathModel = builder.build();
    OutputStream pathJSON = new ByteArrayOutputStream();
    Rio.write(pathModel, pathJSON, RDFFormat.TURTLE);
    return literal(pathJSON.toString());
}