[JAVA][APACHE] Fix apache http client query parameters

modules/openapi-generator/src/main/resources/Java/libraries/apache-httpclient/api.mustache

@@ -83,9 +83,30 @@ public class {{classname}} {
     {{javaUtilPrefix}}Map<String, Object> localVarFormParams = new {{javaUtilPrefix}}HashMap<String, Object>();
 
     {{#queryParams}}
+        {{#isDeepObject}}
     {{#collectionFormat}}localVarCollectionQueryParams.addAll(apiClient.parameterToPairs("{{{collectionFormat}}}", {{/collectionFormat}}{{^collectionFormat}}localVarQueryParams.addAll(apiClient.parameterToPair({{/collectionFormat}}"{{baseName}}", {{paramName}}));
+        {{/isDeepObject}}
+        {{^isDeepObject}}
+            {{#isExplode}}
+                {{#hasVars}}
+                    {{#vars}}
+                        {{#isArray}}
+    localVarQueryParams.addAll(apiClient.parameterToPair("multi", "{{baseName}}", {{paramName}}.{{getter}}()));
+                        {{/isArray}}
+                        {{^isArray}}
+    localVarQueryParams.addAll(apiClient.parameterToPair("{{baseName}}", {{paramName}}.{{getter}}()));
+                        {{/isArray}}
+                    {{/vars}}
+                {{/hasVars}}
+                {{^hasVars}}
+    {{#collectionFormat}}localVarCollectionQueryParams.addAll(apiClient.parameterToPairs("{{{collectionFormat}}}", {{/collectionFormat}}{{^collectionFormat}}localVarQueryParams.addAll(apiClient.parameterToPair({{/collectionFormat}}"{{baseName}}", {{paramName}}));
+                {{/hasVars}}
+            {{/isExplode}}
+            {{^isExplode}}
+    {{#collectionFormat}}localVarCollectionQueryParams.addAll(apiClient.parameterToPairs("{{{collectionFormat}}}", {{/collectionFormat}}{{^collectionFormat}}localVarQueryParams.addAll(apiClient.parameterToPair({{/collectionFormat}}"{{baseName}}", {{paramName}}));
+            {{/isExplode}}
+        {{/isDeepObject}}
     {{/queryParams}}
-
     {{#headerParams}}if ({{paramName}} != null)
       localVarHeaderParams.put("{{baseName}}", apiClient.parameterToString({{paramName}}));
     {{/headerParams}}

modules/openapi-generator/src/test/java/org/openapitools/codegen/java/apachehttpclient/ApacheHttpClientCodegenTest.java

@@ -0,0 +1,94 @@
+/*
+ * Copyright 2018 OpenAPI-Generator Contributors (https://openapi-generator.tech)
+ * Copyright 2018 SmartBear Software
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.openapitools.codegen.java.apachehttpclient;
+
+import org.openapitools.codegen.ClientOptInput;
+import org.openapitools.codegen.CodegenConstants;
+import org.openapitools.codegen.DefaultGenerator;
+import org.openapitools.codegen.TestUtils;
+import org.openapitools.codegen.config.CodegenConfigurator;
+import org.openapitools.codegen.languages.JavaClientCodegen;
+import org.testng.Assert;
+import org.testng.annotations.Test;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import static org.openapitools.codegen.TestUtils.validateJavaSourceFiles;
+
+public class ApacheHttpClientCodegenTest {
+
+    @Test
+    public void testApacheHttpClientExplodedQueryParamObject() throws IOException {
+        Map<String, Object> properties = new HashMap<>();
+        properties.put(CodegenConstants.API_PACKAGE, "xyz.abcdef.api");
+
+        File output = Files.createTempDirectory("test").toFile();
+        output.deleteOnExit();
+
+        final CodegenConfigurator configurator = new CodegenConfigurator()
+                .setGeneratorName("java")
+                .setLibrary(JavaClientCodegen.APACHE)
+                .setAdditionalProperties(properties)
+                .setInputSpec("src/test/resources/3_0/issue4808.yaml")
+                .setOutputDir(output.getAbsolutePath().replace("\\", "/"));
+
+        final ClientOptInput clientOptInput = configurator.toClientOptInput();
+        DefaultGenerator generator = new DefaultGenerator();
+        List<File> files = generator.opts(clientOptInput).generate();
+
+        Assert.assertEquals(files.size(), 41);
+        validateJavaSourceFiles(files);
+
+        TestUtils.assertFileContains(Paths.get(output + "/src/main/java/xyz/abcdef/api/DefaultApi.java"),
+                "localVarQueryParams.addAll(apiClient.parameterToPair(\"since\", queryObject.getSince()));",
+                "localVarQueryParams.addAll(apiClient.parameterToPair(\"sinceBuild\", queryObject.getSinceBuild()));",
+                "localVarQueryParams.addAll(apiClient.parameterToPair(\"maxBuilds\", queryObject.getMaxBuilds()));",
+                "localVarQueryParams.addAll(apiClient.parameterToPair(\"maxWaitSecs\", queryObject.getMaxWaitSecs()));"
+        );
+    }
+
+    @Test
+    public void testApacheHttpClientExplodedQueryParamWithArrayProperty() throws IOException {
+        Map<String, Object> properties = new HashMap<>();
+        properties.put(CodegenConstants.API_PACKAGE, "xyz.abcdef.api");
+
+        File output = Files.createTempDirectory("test").toFile();
+        output.deleteOnExit();
+
+        final CodegenConfigurator configurator = new CodegenConfigurator()
+            .setGeneratorName("java")
+            .setLibrary(JavaClientCodegen.APACHE)
+            .setAdditionalProperties(properties)
+            .setInputSpec("src/test/resources/3_0/exploded-query-param-array.yaml")
+            .setOutputDir(output.getAbsolutePath().replace("\\", "/"));
+
+        final ClientOptInput clientOptInput = configurator.toClientOptInput();
+        DefaultGenerator generator = new DefaultGenerator();
+        generator.opts(clientOptInput).generate();
+
+        TestUtils.assertFileContains(Paths.get(output + "/src/main/java/xyz/abcdef/api/DefaultApi.java"),
+            "localVarQueryParams.addAll(apiClient.parameterToPair(\"multi\", \"values\", queryObject.getValues()))"
+        );
+    }
+}

samples/client/petstore/java/apache-httpclient/src/main/java/org/openapitools/client/api/AnotherFakeApi.java

@@ -73,7 +73,6 @@ public Client call123testSpecialTags(Client body) throws ApiException {
     Map<String, String> localVarCookieParams = new HashMap<String, String>();
     Map<String, Object> localVarFormParams = new HashMap<String, Object>();
 
-
 
 
 

samples/client/petstore/java/apache-httpclient/src/main/java/org/openapitools/client/api/FakeApi.java

@@ -80,7 +80,6 @@ public void createXmlItem(XmlItem xmlItem) throws ApiException {
     Map<String, String> localVarCookieParams = new HashMap<String, String>();
     Map<String, Object> localVarFormParams = new HashMap<String, Object>();
 
-
 
 
 
@@ -131,7 +130,6 @@ public Boolean fakeOuterBooleanSerialize(Boolean body) throws ApiException {
     Map<String, String> localVarCookieParams = new HashMap<String, String>();
     Map<String, Object> localVarFormParams = new HashMap<String, Object>();
 
-
 
 
 
@@ -183,7 +181,6 @@ public OuterComposite fakeOuterCompositeSerialize(OuterComposite body) throws Ap
     Map<String, String> localVarCookieParams = new HashMap<String, String>();
     Map<String, Object> localVarFormParams = new HashMap<String, Object>();
 
-
 
 
 
@@ -235,7 +232,6 @@ public BigDecimal fakeOuterNumberSerialize(BigDecimal body) throws ApiException
     Map<String, String> localVarCookieParams = new HashMap<String, String>();
     Map<String, Object> localVarFormParams = new HashMap<String, Object>();
 
-
 
 
 
@@ -287,7 +283,6 @@ public String fakeOuterStringSerialize(String body) throws ApiException {
     Map<String, String> localVarCookieParams = new HashMap<String, String>();
     Map<String, Object> localVarFormParams = new HashMap<String, Object>();
 
-
 
 
 
@@ -343,7 +338,6 @@ public void testBodyWithFileSchema(FileSchemaTestClass body) throws ApiException
     Map<String, String> localVarCookieParams = new HashMap<String, String>();
     Map<String, Object> localVarFormParams = new HashMap<String, Object>();
 
-
 
 
 
@@ -405,7 +399,6 @@ public void testBodyWithQueryParams(String query, User body) throws ApiException
     Map<String, Object> localVarFormParams = new HashMap<String, Object>();
 
     localVarQueryParams.addAll(apiClient.parameterToPair("query", query));
-
 
 
 
@@ -461,7 +454,6 @@ public Client testClientModel(Client body) throws ApiException {
     Map<String, String> localVarCookieParams = new HashMap<String, String>();
     Map<String, Object> localVarFormParams = new HashMap<String, Object>();
 
-
 
 
 
@@ -545,7 +537,6 @@ public void testEndpointParameters(BigDecimal number, Double _double, String pat
     Map<String, String> localVarCookieParams = new HashMap<String, String>();
     Map<String, Object> localVarFormParams = new HashMap<String, Object>();
 
-
 
 
     if (integer != null)
@@ -634,7 +625,6 @@ public void testEnumParameters(List<String> enumHeaderStringArray, String enumHe
     localVarQueryParams.addAll(apiClient.parameterToPair("enum_query_string", enumQueryString));
     localVarQueryParams.addAll(apiClient.parameterToPair("enum_query_integer", enumQueryInteger));
     localVarQueryParams.addAll(apiClient.parameterToPair("enum_query_double", enumQueryDouble));
-
     if (enumHeaderStringArray != null)
       localVarHeaderParams.put("enum_header_string_array", apiClient.parameterToString(enumHeaderStringArray));
 if (enumHeaderString != null)
@@ -716,7 +706,6 @@ public void testGroupParameters(Integer requiredStringGroup, Boolean requiredBoo
     localVarQueryParams.addAll(apiClient.parameterToPair("required_int64_group", requiredInt64Group));
     localVarQueryParams.addAll(apiClient.parameterToPair("string_group", stringGroup));
     localVarQueryParams.addAll(apiClient.parameterToPair("int64_group", int64Group));
-
     if (requiredBooleanGroup != null)
       localVarHeaderParams.put("required_boolean_group", apiClient.parameterToString(requiredBooleanGroup));
 if (booleanGroup != null)
@@ -775,7 +764,6 @@ public void testInlineAdditionalProperties(Map<String, String> param) throws Api
     Map<String, String> localVarCookieParams = new HashMap<String, String>();
     Map<String, Object> localVarFormParams = new HashMap<String, Object>();
 
-
 
 
 
@@ -836,7 +824,6 @@ public void testJsonFormData(String param, String param2) throws ApiException {
     Map<String, String> localVarCookieParams = new HashMap<String, String>();
     Map<String, Object> localVarFormParams = new HashMap<String, Object>();
 
-
 
 
     if (param != null)
@@ -924,7 +911,6 @@ public void testQueryParameterCollectionFormat(List<String> pipe, List<String> i
     localVarCollectionQueryParams.addAll(apiClient.parameterToPairs("ssv", "http", http));
     localVarCollectionQueryParams.addAll(apiClient.parameterToPairs("csv", "url", url));
     localVarCollectionQueryParams.addAll(apiClient.parameterToPairs("multi", "context", context));
-
 
 
 

samples/client/petstore/java/apache-httpclient/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java

@@ -73,7 +73,6 @@ public Client testClassname(Client body) throws ApiException {
     Map<String, String> localVarCookieParams = new HashMap<String, String>();
     Map<String, Object> localVarFormParams = new HashMap<String, Object>();
 
-
 
 
 

samples/client/petstore/java/apache-httpclient/src/main/java/org/openapitools/client/api/PetApi.java

@@ -75,7 +75,6 @@ public void addPet(Pet body) throws ApiException {
     Map<String, String> localVarCookieParams = new HashMap<String, String>();
     Map<String, Object> localVarFormParams = new HashMap<String, Object>();
 
-
 
 
 
@@ -132,7 +131,6 @@ public void deletePet(Long petId, String apiKey) throws ApiException {
     Map<String, String> localVarCookieParams = new HashMap<String, String>();
     Map<String, Object> localVarFormParams = new HashMap<String, Object>();
 
-
     if (apiKey != null)
       localVarHeaderParams.put("api_key", apiClient.parameterToString(apiKey));
 
@@ -191,7 +189,6 @@ public List<Pet> findPetsByStatus(List<String> status) throws ApiException {
     Map<String, Object> localVarFormParams = new HashMap<String, Object>();
 
     localVarCollectionQueryParams.addAll(apiClient.parameterToPairs("csv", "status", status));
-
 
 
 
@@ -251,7 +248,6 @@ public Set<Pet> findPetsByTags(Set<String> tags) throws ApiException {
     Map<String, Object> localVarFormParams = new HashMap<String, Object>();
 
     localVarCollectionQueryParams.addAll(apiClient.parameterToPairs("csv", "tags", tags));
-
 
 
 
@@ -309,7 +305,6 @@ public Pet getPetById(Long petId) throws ApiException {
     Map<String, String> localVarCookieParams = new HashMap<String, String>();
     Map<String, Object> localVarFormParams = new HashMap<String, Object>();
 
-
 
 
 
@@ -365,7 +360,6 @@ public void updatePet(Pet body) throws ApiException {
     Map<String, String> localVarCookieParams = new HashMap<String, String>();
     Map<String, Object> localVarFormParams = new HashMap<String, Object>();
 
-
 
 
 
@@ -423,7 +417,6 @@ public void updatePetWithForm(Long petId, String name, String status) throws Api
     Map<String, String> localVarCookieParams = new HashMap<String, String>();
     Map<String, Object> localVarFormParams = new HashMap<String, Object>();
 
-
 
 
     if (name != null)
@@ -486,7 +479,6 @@ public ModelApiResponse uploadFile(Long petId, String additionalMetadata, File _
     Map<String, String> localVarCookieParams = new HashMap<String, String>();
     Map<String, Object> localVarFormParams = new HashMap<String, Object>();
 
-
 
 
     if (additionalMetadata != null)
@@ -555,7 +547,6 @@ public ModelApiResponse uploadFileWithRequiredFile(Long petId, File requiredFile
     Map<String, String> localVarCookieParams = new HashMap<String, String>();
     Map<String, Object> localVarFormParams = new HashMap<String, Object>();
 
-
 
 
     if (additionalMetadata != null)

samples/client/petstore/java/apache-httpclient/src/main/java/org/openapitools/client/api/StoreApi.java

@@ -73,7 +73,6 @@ public void deleteOrder(String orderId) throws ApiException {
     Map<String, String> localVarCookieParams = new HashMap<String, String>();
     Map<String, Object> localVarFormParams = new HashMap<String, Object>();
 
-
 
 
 
@@ -123,7 +122,6 @@ public Map<String, Integer> getInventory() throws ApiException {
     Map<String, String> localVarCookieParams = new HashMap<String, String>();
     Map<String, Object> localVarFormParams = new HashMap<String, Object>();
 
-
 
 
 
@@ -181,7 +179,6 @@ public Order getOrderById(Long orderId) throws ApiException {
     Map<String, String> localVarCookieParams = new HashMap<String, String>();
     Map<String, Object> localVarFormParams = new HashMap<String, Object>();
 
-
 
 
 
@@ -238,7 +235,6 @@ public Order placeOrder(Order body) throws ApiException {
     Map<String, String> localVarCookieParams = new HashMap<String, String>();
     Map<String, Object> localVarFormParams = new HashMap<String, Object>();
 
-