[Java][Client] Use java8 OffsetDateTime for clients

modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java

@@ -4973,6 +4973,15 @@ public String getLibrary() {
         return library;
     }
 
+    /**
+     * check if current active library equals to passed
+     * @param library - library to be compared with
+     * @return {@code true} if passed library is active, {@code false} otherwise
+     */
+    public final boolean isLibrary(String library) {
+        return library.equals(this.library);
+    }
+
     /**
      * Set Git host.
      *

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaClientCodegen.java

@@ -325,13 +325,16 @@ public void processOpts() {
         supportingFiles.add(new SupportingFile("ServerVariable.mustache", invokerFolder, "ServerVariable.java"));
         supportingFiles.add(new SupportingFile("openapi.mustache", "api", "openapi.yaml"));
 
+        if (dateLibrary.equals("java8") && (isLibrary(WEBCLIENT) || isLibrary(VERTX) || isLibrary(RESTTEMPLATE) || isLibrary(RESTEASY) || isLibrary(MICROPROFILE) || isLibrary(JERSEY2))) {
+            supportingFiles.add(new SupportingFile("JavaTimeFormatter.mustache", invokerFolder, "JavaTimeFormatter.java"));
+        }
 
-        if (!(RESTTEMPLATE.equals(getLibrary()) || REST_ASSURED.equals(getLibrary()) || NATIVE.equals(getLibrary()) || MICROPROFILE.equals(getLibrary()))) {
+        if (!(RESTTEMPLATE.equals(getLibrary()) || isLibrary(REST_ASSURED) || isLibrary(NATIVE) || isLibrary(MICROPROFILE))) {
             supportingFiles.add(new SupportingFile("StringUtil.mustache", invokerFolder, "StringUtil.java"));
         }
 
         // google-api-client doesn't use the OpenAPI auth, because it uses Google Credential directly (HttpRequestInitializer)
-        if (!(GOOGLE_API_CLIENT.equals(getLibrary()) || REST_ASSURED.equals(getLibrary()) || NATIVE.equals(getLibrary()) || MICROPROFILE.equals(getLibrary()))) {
+        if (!(isLibrary(GOOGLE_API_CLIENT) || isLibrary(REST_ASSURED) || isLibrary(NATIVE) || isLibrary(MICROPROFILE))) {
             supportingFiles.add(new SupportingFile("auth/HttpBasicAuth.mustache", authFolder, "HttpBasicAuth.java"));
             supportingFiles.add(new SupportingFile("auth/HttpBearerAuth.mustache", authFolder, "HttpBearerAuth.java"));
             supportingFiles.add(new SupportingFile("auth/ApiKeyAuth.mustache", authFolder, "ApiKeyAuth.java"));

modules/openapi-generator/src/main/resources/Java/ApiClient.mustache

@@ -12,6 +12,7 @@ import com.fasterxml.jackson.datatype.joda.JodaModule;
 {{/joda}}
 {{#java8}}
 import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
+import java.time.OffsetDateTime;
 {{/java8}}
 {{#threetenbp}}
 import com.fasterxml.jackson.datatype.threetenbp.ThreeTenModule;
@@ -67,7 +68,7 @@ import {{invokerPackage}}.auth.OAuth;
 {{/hasOAuthMethods}}
 
 {{>generatedAnnotation}}
-public class ApiClient {
+public class ApiClient{{#java8}} extends JavaTimeFormatter{{/java8}} {
   private Map<String, String> defaultHeaderMap = new HashMap<String, String>();
   private Map<String, String> defaultCookieMap = new HashMap<String, String>();
   private String basePath = "{{{basePath}}}";
@@ -499,7 +500,9 @@ public class ApiClient {
       return "";
     } else if (param instanceof Date) {
       return formatDate((Date) param);
-    } else if (param instanceof Collection) {
+    } {{#java8}}else if (param instanceof OffsetDateTime) {
+      return formatOffsetDateTime((OffsetDateTime) param);
+    } {{/java8}}else if (param instanceof Collection) {
       StringBuilder b = new StringBuilder();
       for(Object o : (Collection<?>)param) {
         if(b.length() > 0) {

modules/openapi-generator/src/main/resources/Java/JavaTimeFormatter.mustache

@@ -0,0 +1,53 @@
+{{>licenseInfo}}
+package {{invokerPackage}};
+
+import java.time.OffsetDateTime;
+import java.time.format.DateTimeFormatter;
+import java.time.format.DateTimeParseException;
+
+/**
+ * Class that add parsing/formatting support for Java 8+ {@code OffsetDateTime} class.
+ * It's generated for java clients when {@code AbstractJavaCodegen#dateLibrary} specified as {@code java8}.
+ */
+{{>generatedAnnotation}}
+public class JavaTimeFormatter {
+
+    private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
+
+    /**
+     * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+     * @return DateTimeFormatter
+     */
+    public DateTimeFormatter getOffsetDateTimeFormatter() {
+        return offsetDateTimeFormatter;
+    }
+
+    /**
+     * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+     * @param offsetDateTimeFormatter {@code DateTimeFormatter}
+     */
+    public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
+        this.offsetDateTimeFormatter = offsetDateTimeFormatter;
+    }
+
+    /**
+     * Parse the given string into {@code OffsetDateTime} object.
+     * @param str String
+     * @return {@code OffsetDateTime}
+     */
+    public OffsetDateTime parseOffsetDateTime(String str) {
+        try {
+            return OffsetDateTime.parse(str, offsetDateTimeFormatter);
+        } catch (DateTimeParseException e) {
+            throw new RuntimeException(e);
+        }
+    }
+    /**
+     * Format the given {@code OffsetDateTime} object into string.
+     * @param offsetDateTime {@code OffsetDateTime}
+     * @return {@code OffsetDateTime} in string format
+     */
+    public String formatOffsetDateTime(OffsetDateTime offsetDateTime) {
+        return offsetDateTimeFormatter.format(offsetDateTime);
+    }
+}

modules/openapi-generator/src/main/resources/Java/libraries/jersey2/ApiClient.mustache

@@ -55,6 +55,9 @@ import java.util.List;
 import java.util.Arrays;
 import java.util.ArrayList;
 import java.util.Date;
+{{#java8}}
+import java.time.OffsetDateTime;
+{{/java8}}
 
 import java.net.URLEncoder;
 
@@ -77,7 +80,7 @@ import {{invokerPackage}}.auth.OAuth;
 {{/hasOAuthMethods}}
 
 {{>generatedAnnotation}}
-public class ApiClient {
+public class ApiClient{{#java8}} extends JavaTimeFormatter{{/java8}} {
   protected Map<String, String> defaultHeaderMap = new HashMap<String, String>();
   protected Map<String, String> defaultCookieMap = new HashMap<String, String>();
   protected String basePath = "{{{basePath}}}";
@@ -695,7 +698,9 @@ public class ApiClient {
       return "";
     } else if (param instanceof Date) {
       return formatDate((Date) param);
-    } else if (param instanceof Collection) {
+    } {{#java8}}else if (param instanceof OffsetDateTime) {
+      return formatOffsetDateTime((OffsetDateTime) param);
+    } {{/java8}}else if (param instanceof Collection) {
       StringBuilder b = new StringBuilder();
       for(Object o : (Collection)param) {
         if(b.length() > 0) {

modules/openapi-generator/src/main/resources/Java/libraries/resteasy/ApiClient.mustache

@@ -22,6 +22,9 @@ import java.util.Map.Entry;
 import java.util.TimeZone;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
+{{#java8}}
+import java.time.OffsetDateTime;
+{{/java8}}
 
 import javax.ws.rs.client.Client;
 import javax.ws.rs.client.ClientBuilder;
@@ -48,7 +51,7 @@ import {{invokerPackage}}.auth.OAuth;
 {{/hasOAuthMethods}}
 
 {{>generatedAnnotation}}
-public class ApiClient {
+public class ApiClient{{#java8}} extends JavaTimeFormatter{{/java8}} {
   private Map<String, String> defaultHeaderMap = new HashMap<String, String>();
   private Map<String, String> defaultCookieMap = new HashMap<String, String>();
   private String basePath = "{{{basePath}}}";
@@ -333,7 +336,9 @@ public class ApiClient {
       return "";
     } else if (param instanceof Date) {
       return formatDate((Date) param);
-    } else if (param instanceof Collection) {
+    } {{#java8}}else if (param instanceof OffsetDateTime) {
+      return formatOffsetDateTime((OffsetDateTime) param);
+    } {{/java8}}else if (param instanceof Collection) {
       StringBuilder b = new StringBuilder();
       for(Object o : (Collection)param) {
         if(b.length() > 0) {

modules/openapi-generator/src/main/resources/Java/libraries/resttemplate/ApiClient.mustache

@@ -64,6 +64,9 @@ import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.TimeZone;
+{{#java8}}
+import java.time.OffsetDateTime;
+{{/java8}}
 
 import {{invokerPackage}}.auth.Authentication;
 {{#hasHttpBasicMethods}}
@@ -81,7 +84,7 @@ import {{invokerPackage}}.auth.OAuth;
 
 {{>generatedAnnotation}}
 @Component("{{invokerPackage}}.ApiClient")
-public class ApiClient {
+public class ApiClient{{#java8}} extends JavaTimeFormatter{{/java8}} {
     public enum CollectionFormat {
         CSV(","), TSV("\t"), SSV(" "), PIPES("|"), MULTI(null);
 
@@ -402,7 +405,9 @@ public class ApiClient {
             return "";
         } else if (param instanceof Date) {
             return formatDate( (Date) param);
-        } else if (param instanceof Collection) {
+        } {{#java8}}else if (param instanceof OffsetDateTime) {
+            return formatOffsetDateTime((OffsetDateTime) param);
+        } {{/java8}}else if (param instanceof Collection) {
             StringBuilder b = new StringBuilder();
             for(Object o : (Collection<?>) param) {
                 if(b.length() > 0) {

modules/openapi-generator/src/main/resources/Java/libraries/vertx/ApiClient.mustache

@@ -31,6 +31,9 @@ import io.vertx.ext.web.client.HttpResponse;
 import io.vertx.ext.web.client.WebClient;
 import io.vertx.ext.web.client.WebClientOptions;
 
+{{#java8}}
+import java.time.OffsetDateTime;
+{{/java8}}
 import java.text.DateFormat;
 import java.util.*;
 import java.util.function.Consumer;
@@ -40,7 +43,7 @@ import java.util.regex.Pattern;
 import static java.util.stream.Collectors.toMap;
 
 {{>generatedAnnotation}}
-public class ApiClient {
+public class ApiClient{{#java8}} extends JavaTimeFormatter{{/java8}} {
 
     private static final Pattern CONTENT_DISPOSITION_PATTERN = Pattern.compile("filename=['\"]?([^'\"\\s]+)['\"]?");
     private static final OpenOptions FILE_DOWNLOAD_OPTIONS = new OpenOptions().setCreate(true).setTruncateExisting(true);
@@ -291,7 +294,9 @@ public class ApiClient {
             return "";
         } else if (param instanceof Date) {
             return formatDate((Date) param);
-        } else if (param instanceof Collection) {
+        } {{#java8}}else if (param instanceof OffsetDateTime) {
+            return formatOffsetDateTime((OffsetDateTime) param);
+        } {{/java8}}else if (param instanceof Collection) {
             StringBuilder b = new StringBuilder();
             for (Object o : (Collection) param) {
                 if (b.length() > 0) {

modules/openapi-generator/src/main/resources/Java/libraries/webclient/ApiClient.mustache

@@ -57,6 +57,9 @@ import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.TimeZone;
+{{#java8}}
+import java.time.OffsetDateTime;
+{{/java8}}
 
 import {{invokerPackage}}.auth.Authentication;
 import {{invokerPackage}}.auth.HttpBasicAuth;
@@ -67,7 +70,7 @@ import {{invokerPackage}}.auth.OAuth;
 {{/hasOAuthMethods}}
 
 {{>generatedAnnotation}}
-public class ApiClient {
+public class ApiClient{{#java8}} extends JavaTimeFormatter{{/java8}} {
     public enum CollectionFormat {
         CSV(","), TSV("\t"), SSV(" "), PIPES("|"), MULTI(null);
 
@@ -350,7 +353,9 @@ public class ApiClient {
             return "";
         } else if (param instanceof Date) {
             return formatDate( (Date) param);
-        } else if (param instanceof Collection) {
+        } {{#java8}}else if (param instanceof OffsetDateTime) {
+            return formatOffsetDateTime((OffsetDateTime) param);
+        } {{/java8}}else if (param instanceof Collection) {
             StringBuilder b = new StringBuilder();
             for(Object o : (Collection<?>) param) {
                 if(b.length() > 0) {

samples/client/petstore/java/jersey2-java8/.openapi-generator/FILES

@@ -70,6 +70,7 @@ src/main/java/org/openapitools/client/ApiException.java
 src/main/java/org/openapitools/client/ApiResponse.java
 src/main/java/org/openapitools/client/Configuration.java
 src/main/java/org/openapitools/client/JSON.java
+src/main/java/org/openapitools/client/JavaTimeFormatter.java
 src/main/java/org/openapitools/client/Pair.java
 src/main/java/org/openapitools/client/RFC3339DateFormat.java
 src/main/java/org/openapitools/client/ServerConfiguration.java

samples/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/ApiClient.java

@@ -47,6 +47,7 @@
 import java.util.Arrays;
 import java.util.ArrayList;
 import java.util.Date;
+import java.time.OffsetDateTime;
 
 import java.net.URLEncoder;
 
@@ -64,7 +65,7 @@
 import org.openapitools.client.auth.OAuth;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
-public class ApiClient {
+public class ApiClient extends JavaTimeFormatter {
   protected Map<String, String> defaultHeaderMap = new HashMap<String, String>();
   protected Map<String, String> defaultCookieMap = new HashMap<String, String>();
   protected String basePath = "http://petstore.swagger.io:80/v2";
@@ -612,6 +613,8 @@ public String parameterToString(Object param) {
       return "";
     } else if (param instanceof Date) {
       return formatDate((Date) param);
+    } else if (param instanceof OffsetDateTime) {
+      return formatOffsetDateTime((OffsetDateTime) param);
     } else if (param instanceof Collection) {
       StringBuilder b = new StringBuilder();
       for(Object o : (Collection)param) {

samples/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/JavaTimeFormatter.java

@@ -0,0 +1,64 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client;
+
+import java.time.OffsetDateTime;
+import java.time.format.DateTimeFormatter;
+import java.time.format.DateTimeParseException;
+
+/**
+ * Class that add parsing/formatting support for Java 8+ {@code OffsetDateTime} class.
+ * It's generated for java clients when {@code AbstractJavaCodegen#dateLibrary} specified as {@code java8}.
+ */
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
+public class JavaTimeFormatter {
+
+    private DateTimeFormatter offsetDateTimeFormatter = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
+
+    /**
+     * Get the date format used to parse/format {@code OffsetDateTime} parameters.
+     * @return DateTimeFormatter
+     */
+    public DateTimeFormatter getOffsetDateTimeFormatter() {
+        return offsetDateTimeFormatter;
+    }
+
+    /**
+     * Set the date format used to parse/format {@code OffsetDateTime} parameters.
+     * @param offsetDateTimeFormatter {@code DateTimeFormatter}
+     */
+    public void setOffsetDateTimeFormatter(DateTimeFormatter offsetDateTimeFormatter) {
+        this.offsetDateTimeFormatter = offsetDateTimeFormatter;
+    }
+
+    /**
+     * Parse the given string into {@code OffsetDateTime} object.
+     * @param str String
+     * @return {@code OffsetDateTime}
+     */
+    public OffsetDateTime parseOffsetDateTime(String str) {
+        try {
+            return OffsetDateTime.parse(str, offsetDateTimeFormatter);
+        } catch (DateTimeParseException e) {
+            throw new RuntimeException(e);
+        }
+    }
+    /**
+     * Format the given {@code OffsetDateTime} object into string.
+     * @param offsetDateTime {@code OffsetDateTime}
+     * @return {@code OffsetDateTime} in string format
+     */
+    public String formatOffsetDateTime(OffsetDateTime offsetDateTime) {
+        return offsetDateTimeFormatter.format(offsetDateTime);
+    }
+}

samples/client/petstore/java/vertx/.openapi-generator/FILES

@@ -68,6 +68,7 @@ src/main/AndroidManifest.xml
 src/main/java/org/openapitools/client/ApiClient.java
 src/main/java/org/openapitools/client/ApiException.java
 src/main/java/org/openapitools/client/Configuration.java
+src/main/java/org/openapitools/client/JavaTimeFormatter.java
 src/main/java/org/openapitools/client/Pair.java
 src/main/java/org/openapitools/client/RFC3339DateFormat.java
 src/main/java/org/openapitools/client/ServerConfiguration.java

samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/ApiClient.java

@@ -29,6 +29,7 @@
 import io.vertx.ext.web.client.WebClient;
 import io.vertx.ext.web.client.WebClientOptions;
 
+import java.time.OffsetDateTime;
 import java.text.DateFormat;
 import java.util.*;
 import java.util.function.Consumer;
@@ -38,7 +39,7 @@
 import static java.util.stream.Collectors.toMap;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
-public class ApiClient {
+public class ApiClient extends JavaTimeFormatter {
 
     private static final Pattern CONTENT_DISPOSITION_PATTERN = Pattern.compile("filename=['\"]?([^'\"\\s]+)['\"]?");
     private static final OpenOptions FILE_DOWNLOAD_OPTIONS = new OpenOptions().setCreate(true).setTruncateExisting(true);
@@ -287,6 +288,8 @@ public String parameterToString(Object param) {
             return "";
         } else if (param instanceof Date) {
             return formatDate((Date) param);
+        } else if (param instanceof OffsetDateTime) {
+            return formatOffsetDateTime((OffsetDateTime) param);
         } else if (param instanceof Collection) {
             StringBuilder b = new StringBuilder();
             for (Object o : (Collection) param) {