HSEARCH-3282 Remove support for explicit facet encoding in the migrat…

…ion helper

And assume the encoding is defined by the field type.

integrationtest/v5migrationhelper/orm/src/test/java/org/hibernate/search/test/query/facet/Car.java

@@ -14,11 +14,9 @@
 import org.hibernate.search.annotations.Analyze;
 import org.hibernate.search.annotations.Analyzer;
 import org.hibernate.search.annotations.Facet;
-import org.hibernate.search.annotations.FacetEncodingType;
 import org.hibernate.search.annotations.Facets;
 import org.hibernate.search.annotations.Field;
 import org.hibernate.search.annotations.Fields;
-import org.hibernate.search.annotations.FieldBridge;
 import org.hibernate.search.annotations.Indexed;
 import org.hibernate.search.annotations.Store;
 import org.hibernate.search.testsupport.AnalysisNames;
@@ -57,9 +55,8 @@ public class Car {
 
 	private String make;
 
-	@Field(name = CUBIC_CAPACITY_STRING, analyze = Analyze.NO, bridge = @FieldBridge(impl = IntegerBridge.class))
-	@Facet(name = CUBIC_CAPACITY_STRING_FACET_STRING_ENCODING, forField = CUBIC_CAPACITY_STRING, encoding = FacetEncodingType.STRING)
-	@Facet(name = CUBIC_CAPACITY_STRING_FACET_NUMERIC_ENCODING, forField = CUBIC_CAPACITY_STRING, encoding = FacetEncodingType.LONG)
+	@Field
+	@Facet(name = CUBIC_CAPACITY_STRING_FACET_NUMERIC_ENCODING)
 	private Integer cubicCapacity;
 
 	public Car() {
@@ -79,6 +76,12 @@ public Integer getCubicCapacity() {
 		return cubicCapacity;
 	}
 
+	@Field(name = CUBIC_CAPACITY_STRING, analyze = Analyze.NO)
+	@Facet(name = CUBIC_CAPACITY_STRING_FACET_STRING_ENCODING, forField = CUBIC_CAPACITY_STRING)
+	public String getCubicCapacityString() {
+		return cubicCapacity == null ? null : cubicCapacity.toString();
+	}
+
 	public int getId() {
 		return id;
 	}

v5migrationhelper/engine/src/main/java/org/hibernate/search/annotations/Facet.java

@@ -36,9 +36,4 @@
 	 */
 	String forField() default "";
 
-	/**
-	 * @return the encoding type to use for this facet. Per default the encoding type is chosen based on the type of the
-	 * entity property.
-	 */
-	FacetEncodingType encoding() default FacetEncodingType.AUTO;
 }