Templated JSON parsing methods that work with an element or elements array
0
$begingroup$
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
edited 7 mins ago
Jamal♦
30.3k11118227
asked 2 hours ago
shasanshasan
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0
$begingroup$
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
edited 7 mins ago
Jamal♦
30.3k11118227
asked 2 hours ago
shasanshasan
11
New contributor
shasan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
add a comment |
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$begingroup$
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
edited 7 mins ago
Jamal♦
30.3k11118227
asked 2 hours ago
shasanshasan
11
New contributor
shasan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
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
edited 7 mins ago
Jamal♦
30.3k11118227
asked 2 hours ago
shasanshasan
11
New contributor
shasan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 7 mins ago
Jamal♦
30.3k11118227
asked 2 hours ago
shasanshasan
11
New contributor
shasan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 7 mins ago
Jamal♦
30.3k11118227
edited 7 mins ago
Jamal♦
30.3k11118227
edited 7 mins ago
Jamal♦
30.3k11118227
30.3k11118227
asked 2 hours ago
shasanshasan
11
New contributor
shasan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 2 hours ago
shasanshasan
11
asked 2 hours ago
shasanshasan
11
11
New contributor
shasan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
shasan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
shasan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
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