Examples with Base org.hl7.fhir.dstu2.model.Base used on opensource projects

Example 71 with Base

use of org.hl7.fhir.dstu2.model.Base in project org.hl7.fhir.core by hapifhir.

the class FHIRPathEngine method opPlus.

private List<Base> opPlus(List<Base> left, List<Base> right) throws PathEngineException {
    if (left.size() == 0)
        throw new PathEngineException("Error performing +: left operand has no value");
    if (left.size() > 1)
        throw new PathEngineException("Error performing +: left operand has more than one value");
    if (!left.get(0).isPrimitive())
        throw new PathEngineException(String.format("Error performing +: left operand has the wrong type (%s)", left.get(0).fhirType()));
    if (right.size() == 0)
        throw new PathEngineException("Error performing +: right operand has no value");
    if (right.size() > 1)
        throw new PathEngineException("Error performing +: right operand has more than one value");
    if (!right.get(0).isPrimitive())
        throw new PathEngineException(String.format("Error performing +: right operand has the wrong type (%s)", right.get(0).fhirType()));
    List<Base> result = new ArrayList<Base>();
    Base l = left.get(0);
    Base r = right.get(0);
    if (l.hasType("string", "id", "code", "uri") && r.hasType("string", "id", "code", "uri"))
        result.add(new StringType(l.primitiveValue() + r.primitiveValue()));
    else if (l.hasType("integer") && r.hasType("integer"))
        result.add(new IntegerType(Integer.parseInt(l.primitiveValue()) + Integer.parseInt(r.primitiveValue())));
    else if (l.hasType("decimal", "integer") && r.hasType("decimal", "integer"))
        result.add(new DecimalType(new BigDecimal(l.primitiveValue()).add(new BigDecimal(r.primitiveValue()))));
    else
        throw new PathEngineException(String.format("Error performing +: left and right operand have incompatible or illegal types (%s, %s)", left.get(0).fhirType(), right.get(0).fhirType()));
    return result;
}

Example 72 with Base

use of org.hl7.fhir.dstu2.model.Base in project org.hl7.fhir.core by hapifhir.

the class FHIRPathEngine method funcIs.

private List<Base> funcIs(ExecutionContext context, List<Base> focus, ExpressionNode exp) throws PathEngineException {
    List<Base> result = new ArrayList<Base>();
    if (focus.size() == 0 || focus.size() > 1)
        result.add(new BooleanType(false));
    else {
        String tn = exp.getParameters().get(0).getName();
        result.add(new BooleanType(focus.get(0).hasType(tn)));
    }
    return result;
}

Example 73 with Base

use of org.hl7.fhir.dstu2.model.Base in project org.hl7.fhir.core by hapifhir.

the class FHIRPathEngine method opDiv.

private List<Base> opDiv(List<Base> left, List<Base> right) throws PathEngineException {
    if (left.size() == 0)
        throw new PathEngineException("Error performing div: left operand has no value");
    if (left.size() > 1)
        throw new PathEngineException("Error performing div: left operand has more than one value");
    if (!left.get(0).isPrimitive())
        throw new PathEngineException(String.format("Error performing div: left operand has the wrong type (%s)", left.get(0).fhirType()));
    if (right.size() == 0)
        throw new PathEngineException("Error performing div: right operand has no value");
    if (right.size() > 1)
        throw new PathEngineException("Error performing div: right operand has more than one value");
    if (!right.get(0).isPrimitive())
        throw new PathEngineException(String.format("Error performing div: right operand has the wrong type (%s)", right.get(0).fhirType()));
    List<Base> result = new ArrayList<Base>();
    Base l = left.get(0);
    Base r = right.get(0);
    if (l.hasType("integer") && r.hasType("integer"))
        result.add(new IntegerType(Integer.parseInt(l.primitiveValue()) / Integer.parseInt(r.primitiveValue())));
    else if (l.hasType("decimal", "integer") && r.hasType("decimal", "integer")) {
        Decimal d1;
        try {
            d1 = new Decimal(l.primitiveValue());
            Decimal d2 = new Decimal(r.primitiveValue());
            result.add(new IntegerType(d1.divInt(d2).asDecimal()));
        } catch (UcumException e) {
            throw new PathEngineException(e);
        }
    } else
        throw new PathEngineException(String.format("Error performing div: left and right operand have incompatible or illegal types (%s, %s)", left.get(0).fhirType(), right.get(0).fhirType()));
    return result;
}

Example 74 with Base

use of org.hl7.fhir.dstu2.model.Base in project org.hl7.fhir.core by hapifhir.

the class FHIRPathEngine method execute.

private List<Base> execute(ExecutionContext context, List<Base> focus, ExpressionNode exp, boolean atEntry) throws PathEngineException {
    // System.out.println("Evaluate {'"+exp.toString()+"'} on "+focus.toString());
    List<Base> work = new ArrayList<Base>();
    switch(exp.getKind()) {
        case Name:
            if (atEntry && exp.getName().equals("$this"))
                work.add(context.getThisItem());
            else
                for (Base item : focus) {
                    List<Base> outcome = execute(context, item, exp, atEntry);
                    for (Base base : outcome) if (base != null)
                        work.add(base);
                }
            break;
        case Function:
            List<Base> work2 = evaluateFunction(context, focus, exp);
            work.addAll(work2);
            break;
        case Constant:
            Base b = processConstant(context, exp.getConstant());
            if (b != null)
                work.add(b);
            break;
        case Group:
            work2 = execute(context, focus, exp.getGroup(), atEntry);
            work.addAll(work2);
    }
    if (exp.getInner() != null)
        work = execute(context, work, exp.getInner(), false);
    if (exp.isProximal() && exp.getOperation() != null) {
        ExpressionNode next = exp.getOpNext();
        ExpressionNode last = exp;
        while (next != null) {
            List<Base> work2 = preOperate(work, last.getOperation());
            if (work2 != null)
                work = work2;
            else if (last.getOperation() == Operation.Is || last.getOperation() == Operation.As) {
                work2 = executeTypeName(context, focus, next, false);
                work = operate(work, last.getOperation(), work2);
            } else {
                work2 = execute(context, focus, next, true);
                work = operate(work, last.getOperation(), work2);
            // System.out.println("Result of {'"+last.toString()+" "+last.getOperation().toCode()+" "+next.toString()+"'}: "+focus.toString());
            }
            last = next;
            next = next.getOpNext();
        }
    }
    // System.out.println("Result of {'"+exp.toString()+"'}: "+work.toString());
    return work;
}

Example 75 with Base

use of org.hl7.fhir.dstu2.model.Base in project org.hl7.fhir.core by hapifhir.

the class FHIRPathEngine method executeTypeName.

private List<Base> executeTypeName(ExecutionContext context, List<Base> focus, ExpressionNode next, boolean atEntry) {
    List<Base> result = new ArrayList<Base>();
    result.add(new StringType(next.getName()));
    return result;
}