Reject invalid param prefix.

An unrecognized param prefix had been silently ignored.
Reject it with a DataFormatException instead.

hapi-fhir-base/src/main/java/ca/uhn/fhir/rest/param/BaseParamWithPrefix.java

@@ -20,6 +20,8 @@ package ca.uhn.fhir.rest.param;
  * #L%
  */
 
+import ca.uhn.fhir.parser.DataFormatException;
+
 import static org.apache.commons.lang3.StringUtils.isBlank;
 
 public abstract class BaseParamWithPrefix<T extends BaseParam> extends BaseParam {
@@ -58,8 +60,9 @@ public abstract class BaseParamWithPrefix<T extends BaseParam> extends BaseParam
 		if (!isBlank(prefix)) {
 		
 			myPrefix = ParamPrefixEnum.forValue(prefix);
-	
+
 			if (myPrefix == null) {
+				// prefix doesn't match standard values.  Try legacy values
 				switch (prefix) {
 				case ">=":
 					myPrefix = ParamPrefixEnum.GREATERTHAN_OR_EQUALS;
@@ -77,14 +80,9 @@ public abstract class BaseParamWithPrefix<T extends BaseParam> extends BaseParam
 					myPrefix = ParamPrefixEnum.APPROXIMATE;
 					break;
 				default :
-					ourLog.warn("Invalid prefix being ignored: {}", prefix);
+					throw new DataFormatException("Invalid prefix: \"" + prefix + "\"");
-					break;
 				}
-				
+				ourLog.warn("Date parameter has legacy prefix '{}' which has been removed from FHIR. This should be replaced with '{}'", prefix, myPrefix.getValue());
-				if (myPrefix != null) {
-					ourLog.warn("Date parameter has legacy prefix '{}' which has been removed from FHIR. This should be replaced with '{}'", prefix, myPrefix);
-				}
-				
 			}
 			
 		}
@@ -107,4 +105,5 @@ public abstract class BaseParamWithPrefix<T extends BaseParam> extends BaseParam
 		myPrefix = thePrefix;
 		return (T) this;
 	}
+
 }

hapi-fhir-base/src/test/java/ca/uhn/fhir/rest/param/DateParamTest.java

@@ -0,0 +1,61 @@
+package ca.uhn.fhir.rest.param;
+
+import ca.uhn.fhir.parser.DataFormatException;
+import org.junit.jupiter.api.Test;
+
+import java.time.Month;
+import java.time.ZoneId;
+import java.time.ZonedDateTime;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class DateParamTest {
+
+	@Test
+	public void testBasicParse() {
+		DateParam input = new DateParam("2020-01-01");
+
+		// too bad value is a j.u.Date instead of a new JSR-310 type
+		// DataParam parses using default tz, so go backwards.
+		ZonedDateTime zonedDateTime = input.getValue().toInstant().atZone(ZoneId.systemDefault());
+		assertEquals(2020,zonedDateTime.getYear());
+		assertEquals(Month.JANUARY,zonedDateTime.getMonth());
+		assertEquals(1,zonedDateTime.getDayOfMonth());
+		assertNull(input.getPrefix());
+	}
+
+	@Test
+	public void testBadDateFormat() {
+		try {
+			DateParam input = new DateParam("09-30-1960");
+			fail();
+		} catch (DataFormatException e) {
+			// expected
+		}
+	}
+
+	@Test
+	public void testPrefixParse() {
+		DateParam input = new DateParam("gt2020-01-01");
+
+		assertEquals(ParamPrefixEnum.GREATERTHAN, input.getPrefix());
+	}
+
+	@Test
+	public void testLegacyPrefixParse() {
+		DateParam input = new DateParam(">2020-01-01");
+
+		assertEquals(ParamPrefixEnum.GREATERTHAN, input.getPrefix());
+	}
+
+	@Test
+	public void testJunkDateIssue1465() {
+		// Issue 1464 - the string "junk" wasn't returning 400 as expected.  Parsed as a prefix instead, and discarded.
+		try {
+			DateParam input = new DateParam("junk");
+			fail();
+		} catch (DataFormatException e) {
+			// expected
+		}
+	}
+}

hapi-fhir-jpaserver-base/src/test/java/ca/uhn/fhir/jpa/dao/r4/FhirResourceDaoR4SearchNoFtTest.java

@@ -5163,28 +5163,6 @@ public class FhirResourceDaoR4SearchNoFtTest extends BaseJpaR4Test {
 		}
 	}
 
-	@Test
-	public void testIssueDateFormatError1465() {
-		try {
-			SearchParameterMap map = SearchParameterMap.newSynchronous();
-			map.add("birthdate", new DateParam("09-30-1960"));
-			myPatientDao.search(map);
-			fail();
-		} catch (DataFormatException e) {
-			assertEquals("Invalid date/time format: \"09-30-1960\"", e.getMessage());
-		}
-
-		try {
-			SearchParameterMap map = SearchParameterMap.newSynchronous();
-			map.add("birthdate", new DateParam("junk"));
-			myPatientDao.search(map);
-			fail();
-		} catch (DataFormatException e) {
-			assertEquals("Invalid date/time format: \"junk\"", e.getMessage());
-		}
-	}
-
-
 	@Test
 	public void testDateSearchParametersShouldBeTimezoneIndependent() {