Fixed override issue on property collectionFormat part of annotation @ApiImplicitParam and added some tests.

Author: Jan Gasperlin

modules/swagger-jaxrs/src/test/java/io/swagger/ReaderTest.java

@@ -44,12 +44,7 @@
 import io.swagger.util.Json;
 import org.testng.annotations.Test;
 
-import javax.ws.rs.DELETE;
-import javax.ws.rs.GET;
-import javax.ws.rs.HEAD;
-import javax.ws.rs.OPTIONS;
-import javax.ws.rs.POST;
-import javax.ws.rs.PUT;
+import javax.ws.rs.*;
 import javax.ws.rs.core.MediaType;
 import java.lang.annotation.Annotation;
 import java.lang.reflect.Method;
@@ -238,6 +233,7 @@ public void scanImplicitParam() {
         List<Parameter> params = swagger.getPath("/testString").getPost().getParameters();
         assertNotNull(params);
         assertEquals(params.size(), 8);
+        assertEquals(params.size(), 10);
 
         assertEquals(params.get(0).getName(), "sort");
         assertEquals(params.get(0).getIn(), "query");
@@ -278,6 +274,15 @@ public void scanImplicitParam() {
         // see https://github.com/swagger-api/swagger-core/issues/2556. should be not null
         assertNull(queryParam.getType());
 
+        QueryParameter selectByParam = (QueryParameter) params.get(8);
+        assertEquals(selectByParam.getName(), "select");
+        assertEquals(selectByParam.getIn(), "query");
+        assertEquals(selectByParam.getCollectionFormat(), "multi");
+
+        QueryParameter orderByParam = (QueryParameter) params.get(9);
+        assertEquals(orderByParam.getName(), "orderby");
+        assertEquals(orderByParam.getIn(), "query");
+        assertEquals(orderByParam.getCollectionFormat(), "csv");
     }
 
     @Test(description = "scan implicit params with file objct")

modules/swagger-jaxrs/src/test/java/io/swagger/resources/ResourceWithImplicitParams.java

@@ -23,7 +23,9 @@ public class ResourceWithImplicitParams {
             @ApiImplicitParam(name = "height", paramType = "query", dataType = "int", allowableValues = "range[3,4]"),
             @ApiImplicitParam(name = "body", paramType = "body", dataType = "string", required = true),
             @ApiImplicitParam(name = "width", paramType = "unknown"),
-            @ApiImplicitParam(name = "description", paramType = "query")
+            @ApiImplicitParam(name = "description", paramType = "query"),
+            @ApiImplicitParam(name = "select", type = "array", paramType = "query", dataTypeClass = String.class),
+            @ApiImplicitParam(name = "orderby", type = "array", paramType = "query", dataTypeClass = String.class, collectionFormat = "csv")
     })
     @ApiOperation("Test operation with implicit parameters")
     public void testString() {

modules/swagger-models/src/main/java/io/swagger/models/parameters/AbstractSerializableParameter.java

@@ -249,7 +249,13 @@ public String getType() {
     @Override
     public void setType(String type) {
         this.type = type;
-        setCollectionFormat(ArrayProperty.isType(type) ? getDefaultCollectionFormat() : null);
+        if(ArrayProperty.isType(type)) {
+            if(getCollectionFormat() == null){
+                setCollectionFormat(getDefaultCollectionFormat());
+            }
+        } else {
+            setCollectionFormat(null);
+        }
     }
 
     @Override