Templated JSON parsing methods that work with an element or elements array
$begingroup$
Consider the following two Java methods. The first takes a JSON string representing one element, the second representing multiple elements. gson.fromJson()
can be called with a Class
parameter or a Class
parameter. The trick is in unifying the method signatures so a caller of creatBean()
can call seamlessly with a Class
or Class
parameter. Is there a way these two can be combined?
public <T extends ValidateableBean>T createBean(String json, Class<T> clazz) {
Gson gson = new Gson();
T device = gson.fromJson(json, clazz);
InputValidation inputValidation = new InputValidation();
if (!inputValidation.validate((ValidateableBean) device, "Error during validation")) {
throw new WebApplicationException(Status.BAD_REQUEST);
}
return device;
}
public <T extends ValidateableBean>T createBeans(String json, Class<T> clazz) {
Gson gson = new Gson();
T devices = gson.fromJson(json, clazz);
InputValidation inputValidation = new InputValidation();
for (T device : devices) {
if (!inputValidation.validate((ValidateableBean) device, "Error during validation")) {
throw new WebApplicationException(Status.BAD_REQUEST);
}
}
return devices;
}
java json generics template gson
New contributor
$endgroup$
add a comment |
$begingroup$
Consider the following two Java methods. The first takes a JSON string representing one element, the second representing multiple elements. gson.fromJson()
can be called with a Class
parameter or a Class
parameter. The trick is in unifying the method signatures so a caller of creatBean()
can call seamlessly with a Class
or Class
parameter. Is there a way these two can be combined?
public <T extends ValidateableBean>T createBean(String json, Class<T> clazz) {
Gson gson = new Gson();
T device = gson.fromJson(json, clazz);
InputValidation inputValidation = new InputValidation();
if (!inputValidation.validate((ValidateableBean) device, "Error during validation")) {
throw new WebApplicationException(Status.BAD_REQUEST);
}
return device;
}
public <T extends ValidateableBean>T createBeans(String json, Class<T> clazz) {
Gson gson = new Gson();
T devices = gson.fromJson(json, clazz);
InputValidation inputValidation = new InputValidation();
for (T device : devices) {
if (!inputValidation.validate((ValidateableBean) device, "Error during validation")) {
throw new WebApplicationException(Status.BAD_REQUEST);
}
}
return devices;
}
java json generics template gson
New contributor
$endgroup$
add a comment |
$begingroup$
Consider the following two Java methods. The first takes a JSON string representing one element, the second representing multiple elements. gson.fromJson()
can be called with a Class
parameter or a Class
parameter. The trick is in unifying the method signatures so a caller of creatBean()
can call seamlessly with a Class
or Class
parameter. Is there a way these two can be combined?
public <T extends ValidateableBean>T createBean(String json, Class<T> clazz) {
Gson gson = new Gson();
T device = gson.fromJson(json, clazz);
InputValidation inputValidation = new InputValidation();
if (!inputValidation.validate((ValidateableBean) device, "Error during validation")) {
throw new WebApplicationException(Status.BAD_REQUEST);
}
return device;
}
public <T extends ValidateableBean>T createBeans(String json, Class<T> clazz) {
Gson gson = new Gson();
T devices = gson.fromJson(json, clazz);
InputValidation inputValidation = new InputValidation();
for (T device : devices) {
if (!inputValidation.validate((ValidateableBean) device, "Error during validation")) {
throw new WebApplicationException(Status.BAD_REQUEST);
}
}
return devices;
}
java json generics template gson
New contributor
$endgroup$
Consider the following two Java methods. The first takes a JSON string representing one element, the second representing multiple elements. gson.fromJson()
can be called with a Class
parameter or a Class
parameter. The trick is in unifying the method signatures so a caller of creatBean()
can call seamlessly with a Class
or Class
parameter. Is there a way these two can be combined?
public <T extends ValidateableBean>T createBean(String json, Class<T> clazz) {
Gson gson = new Gson();
T device = gson.fromJson(json, clazz);
InputValidation inputValidation = new InputValidation();
if (!inputValidation.validate((ValidateableBean) device, "Error during validation")) {
throw new WebApplicationException(Status.BAD_REQUEST);
}
return device;
}
public <T extends ValidateableBean>T createBeans(String json, Class<T> clazz) {
Gson gson = new Gson();
T devices = gson.fromJson(json, clazz);
InputValidation inputValidation = new InputValidation();
for (T device : devices) {
if (!inputValidation.validate((ValidateableBean) device, "Error during validation")) {
throw new WebApplicationException(Status.BAD_REQUEST);
}
}
return devices;
}
java json generics template gson
java json generics template gson
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edited 4 mins ago
Jamal♦
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30.3k11118227
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asked 2 hours ago
shasanshasan
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