001package org.hl7.fhir.r5.liquid;
002
003import java.util.ArrayList;
004import java.util.List;
005
006import org.hl7.fhir.exceptions.FHIRException;
007import org.hl7.fhir.r5.fhirpath.FHIRPathEngine;
008import org.hl7.fhir.r5.fhirpath.FHIRPathEngine.IEvaluationContext.FunctionDefinition;
009import org.hl7.fhir.r5.fhirpath.FHIRPathUtilityClasses.FunctionDetails;
010import org.hl7.fhir.r5.fhirpath.TypeDetails;
011import org.hl7.fhir.r5.fhirpath.ExpressionNode.CollectionStatus;
012import org.hl7.fhir.r5.model.Base;
013import org.hl7.fhir.r5.model.DateTimeType;
014import org.hl7.fhir.r5.model.IntegerType;
015import org.hl7.fhir.r5.model.StringType;
016import org.hl7.fhir.utilities.FhirPublication;
017import org.hl7.fhir.utilities.MarkedToMoveToAdjunctPackage;
018import org.hl7.fhir.utilities.Utilities;
019
020import com.microsoft.schemas.office.visio.x2012.main.impl.FunctionDefTypeImpl;
021
022@MarkedToMoveToAdjunctPackage
023public class GlobalObject extends Base {
024
025  private DateTimeType dt;
026  private StringType pathToSpec;
027  
028  public GlobalObject(DateTimeType td, StringType pathToSpec) {
029    super();
030    this.dt = td;
031    this.pathToSpec = pathToSpec;
032  }
033
034  @Override
035  public String fhirType() {
036    return "GlobalObject";
037  }
038
039  @Override
040  public String getIdBase() {
041    return null;
042  }
043
044  @Override
045  public void setIdBase(String value) {
046    throw new Error("Read only"); 
047  }
048
049  @Override
050  public Base copy() {
051    return this;
052  }
053
054  @Override
055  public FhirPublication getFHIRPublicationVersion() {
056    return FhirPublication.R5;
057  }
058
059  public Base[] getProperty(int hash, String name, boolean checkValid) throws FHIRException {
060    if ("dateTime".equals(name)) {
061      return wrap(dt);
062    } else if ("path".equals(name)) {
063      return wrap(pathToSpec);
064    } else {
065      return super.getProperty(hash, name, checkValid);
066    }
067  }
068
069  private Base[] wrap(Base b) {
070    Base[] l = new Base[1];
071    l[0] = b;
072    return l;
073  }
074  
075  @Override
076  public List<Base> executeFunction(FHIRPathEngine engine, Object appContext, List<Base> focus, String functionName, List<List<Base>> parameters) {
077    return null;
078  }
079
080  public static class GlobalObjectRandomFunction extends FunctionDefinition {
081
082    @Override
083    public String name() {
084      return "random";
085    }
086
087    @Override
088    public FunctionDetails details() {
089      return new FunctionDetails("Generate a Random Number", 1, 1);
090    }
091
092    @Override
093    public TypeDetails check(FHIRPathEngine engine, Object appContext, TypeDetails focus, List<TypeDetails> parameters) {
094      if (focus.hasType("GlobalObject")) {
095        return new TypeDetails(CollectionStatus.SINGLETON, "integer");
096      } else {
097        return null;
098      }
099    }
100
101    @Override
102    public List<Base> execute(FHIRPathEngine engine, Object appContext, List<Base> focus, List<List<Base>> parameters) {
103      List<Base> list = new ArrayList<>();
104      int scale = Utilities.parseInt(parameters.get(0).get(0).primitiveValue(), 100)+ 1;
105      list.add(new IntegerType((int)(Math.random() * scale)));
106      return list;
107    }
108    
109  }
110}