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Add toBase64 & fromBase64 to FHIRPath

This commit is contained in:
Grahame Grieve 2020-06-01 16:51:49 +10:00
parent 970c28bb26
commit ba505a800e
2 changed files with 38 additions and 4 deletions
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9
org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/model/ExpressionNode.java
View File

@ -72,8 +72,9 @@ public class ExpressionNode {
Empty, Not, Exists, SubsetOf, SupersetOf, IsDistinct, Distinct, Count, Where, Select, All, Repeat, Aggregate, Item /*implicit from name[]*/, As, Is, Single,
First, Last, Tail, Skip, Take, Union, Combine, Intersect, Exclude, Iif, Upper, Lower, ToChars, IndexOf, Substring, StartsWith, EndsWith, Matches, ReplaceMatches, Contains, Replace, Length,
Children, Descendants, MemberOf, Trace, Check, Today, Now, Resolve, Extension, AllFalse, AnyFalse, AllTrue, AnyTrue,
HasValue, AliasAs, Alias, HtmlChecks, OfType, Type,
ConvertsToBoolean, ConvertsToInteger, ConvertsToString, ConvertsToDecimal, ConvertsToQuantity, ConvertsToDateTime, ConvertsToTime, ToBoolean, ToInteger, ToString, ToDecimal, ToQuantity, ToDateTime, ToTime, ConformsTo;
HasValue, OfType, Type, ConvertsToBoolean, ConvertsToInteger, ConvertsToString, ConvertsToDecimal, ConvertsToQuantity, ConvertsToDateTime, ConvertsToTime, ToBoolean, ToInteger, ToString, ToDecimal, ToQuantity, ToDateTime, ToTime, ConformsTo,
// Local extensions to FHIRPath
HtmlChecks, AliasAs, Alias, fromBase64, toBase64;
public static Function fromCode(String name) {
if (name.equals("empty")) return Function.Empty;
@ -133,6 +134,8 @@ public class ExpressionNode {
if (name.equals("aliasAs")) return Function.AliasAs;
if (name.equals("htmlChecks")) return Function.HtmlChecks;
if (name.equals("htmlchecks")) return Function.HtmlChecks; // support change of care from R3
if (name.equals("fromBase64")) return Function.fromBase64;
if (name.equals("toBase64")) return Function.toBase64;
if (name.equals("ofType")) return Function.OfType;
if (name.equals("type")) return Function.Type;
if (name.equals("toInteger")) return Function.ToInteger;
@ -209,6 +212,8 @@ public class ExpressionNode {
case HasValue : return "hasValue";
case Alias : return "alias";
case AliasAs : return "aliasAs";
case fromBase64 : return "fromBase64";
case toBase64 : return "toBase64";
case HtmlChecks : return "htmlChecks";
case OfType : return "ofType";
case Type : return "type";

31
org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/utils/FHIRPathEngine.java
View File

@ -10,6 +10,7 @@ import java.util.List;
import java.util.Map;
import java.util.Set;
import org.apache.commons.codec.binary.Base64;
import org.apache.commons.lang3.NotImplementedException;
import org.fhir.ucum.Decimal;
import org.fhir.ucum.Pair;
@ -1146,6 +1147,8 @@ public class FHIRPathEngine {
case HasValue: return checkParamCount(lexer, location, exp, 0);
case Alias: return checkParamCount(lexer, location, exp, 1);
case AliasAs: return checkParamCount(lexer, location, exp, 1);
case fromBase64: return checkParamCount(lexer, location, exp, 0);
case toBase64: return checkParamCount(lexer, location, exp, 0);
case HtmlChecks: return checkParamCount(lexer, location, exp, 0);
case ToInteger: return checkParamCount(lexer, location, exp, 0);
case ToDecimal: return checkParamCount(lexer, location, exp, 0);
@ -2644,6 +2647,10 @@ public class FHIRPathEngine {
case AliasAs :
checkParamTypes(exp.getFunction().toCode(), paramTypes, new TypeDetails(CollectionStatus.SINGLETON, TypeDetails.FP_String));
return focus;
case fromBase64:
return new TypeDetails(CollectionStatus.SINGLETON, TypeDetails.FP_String);
case toBase64:
return new TypeDetails(CollectionStatus.SINGLETON, TypeDetails.FP_String);
case ToInteger : {
checkContextPrimitive(focus, "toInteger", true);
return new TypeDetails(CollectionStatus.SINGLETON, TypeDetails.FP_Integer);
@ -2818,6 +2825,8 @@ public class FHIRPathEngine {
case AllTrue: return funcAllTrue(context, focus, exp);
case HasValue : return funcHasValue(context, focus, exp);
case AliasAs : return funcAliasAs(context, focus, exp);
case fromBase64 : return funcFromBase64(context, focus, exp);
case toBase64 : return funcToBase64(context, focus, exp);
case Alias : return funcAlias(context, focus, exp);
case HtmlChecks : return funcHtmlChecks(context, focus, exp);
case ToInteger : return funcToInteger(context, focus, exp);
@ -2846,7 +2855,27 @@ public class FHIRPathEngine {
}
}
private List<Base> funcAliasAs(ExecutionContext context, List<Base> focus, ExpressionNode exp) throws FHIRException {
private List<Base> funcToBase64(ExecutionContext context, List<Base> focus, ExpressionNode exp) {
List<Base> result = new ArrayList<Base>();
if (focus.size() == 1) {
String s = convertToString(focus.get(0));
result.add(new StringType(Base64.encodeBase64String(s.getBytes())));
}
return result;
}
private List<Base> funcFromBase64(ExecutionContext context, List<Base> focus, ExpressionNode exp) {
List<Base> result = new ArrayList<Base>();
if (focus.size() == 1) {
String s = convertToString(focus.get(0));
result.add(new StringType(new String(Base64.decodeBase64(s))));
}
return result;
}
private List<Base> funcAliasAs(ExecutionContext context, List<Base> focus, ExpressionNode exp) throws FHIRException {
List<Base> nl = execute(context, focus, exp.getParameters().get(0), true);
String name = nl.get(0).primitiveValue();
context.addAlias(name, focus);