Package com.restfb.exception.generator

Interface FacebookExceptionGenerator

All Known Implementing Classes:

DefaultFacebookExceptionGenerator

public interface FacebookExceptionGenerator

Generator to convert Facebook error JSON into RestFB Exceptions.

Provides methods to convert graph api errors and batch errors.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	BATCH_ERROR_ATTRIBUTE_NAME	Batch API error response 'error' attribute name.
static final String	BATCH_ERROR_DESCRIPTION_ATTRIBUTE_NAME	Batch API error response 'error_description' attribute name.
static final String	ERROR_ATTRIBUTE_NAME	API error response 'error' attribute name.
static final String	ERROR_CODE_ATTRIBUTE_NAME	API error response 'code' attribute name.
static final String	ERROR_IS_TRANSIENT_NAME
static final String	ERROR_MESSAGE_ATTRIBUTE_NAME	API error response 'message' attribute name.
static final String	ERROR_SUBCODE_ATTRIBUTE_NAME	API error response 'error_subcode' attribute name.
static final String	ERROR_TYPE_ATTRIBUTE_NAME	API error response 'type' attribute name.
static final String	ERROR_USER_MSG_ATTRIBUTE_NAME	API error response 'error_user_msg' attribute name.
static final String	ERROR_USER_TITLE_ATTRIBUTE_NAME	API error response 'error_user_title' attribute name.

Method Summary

Modifier and Type	Method	Description
void	throwBatchFacebookResponseStatusExceptionIfNecessary(String json, Integer httpStatusCode)	If the error and error_description JSON fields are present, we've got a response status error for this batch API call.
void	throwFacebookResponseStatusExceptionIfNecessary(String json, Integer httpStatusCode)	Throws an exception if Facebook returned an error response.

Field Details

ERROR_ATTRIBUTE_NAME

static final String ERROR_ATTRIBUTE_NAME

API error response 'error' attribute name.

See Also:

• Constant Field Values

ERROR_TYPE_ATTRIBUTE_NAME

static final String ERROR_TYPE_ATTRIBUTE_NAME

API error response 'type' attribute name.

See Also:

• Constant Field Values

ERROR_USER_TITLE_ATTRIBUTE_NAME

static final String ERROR_USER_TITLE_ATTRIBUTE_NAME

API error response 'error_user_title' attribute name.

See Also:

• Constant Field Values

ERROR_USER_MSG_ATTRIBUTE_NAME

static final String ERROR_USER_MSG_ATTRIBUTE_NAME

API error response 'error_user_msg' attribute name.

See Also:

• Constant Field Values

ERROR_MESSAGE_ATTRIBUTE_NAME

static final String ERROR_MESSAGE_ATTRIBUTE_NAME

API error response 'message' attribute name.

See Also:

• Constant Field Values

ERROR_CODE_ATTRIBUTE_NAME

static final String ERROR_CODE_ATTRIBUTE_NAME

API error response 'code' attribute name.

See Also:

• Constant Field Values

ERROR_IS_TRANSIENT_NAME

static final String ERROR_IS_TRANSIENT_NAME

See Also:

• Constant Field Values

ERROR_SUBCODE_ATTRIBUTE_NAME

static final String ERROR_SUBCODE_ATTRIBUTE_NAME

API error response 'error_subcode' attribute name.

See Also:

• Constant Field Values

BATCH_ERROR_ATTRIBUTE_NAME

static final String BATCH_ERROR_ATTRIBUTE_NAME

Batch API error response 'error' attribute name.

See Also:

• Constant Field Values

BATCH_ERROR_DESCRIPTION_ATTRIBUTE_NAME

static final String BATCH_ERROR_DESCRIPTION_ATTRIBUTE_NAME

Batch API error response 'error_description' attribute name.

See Also:

• Constant Field Values

Method Details

throwFacebookResponseStatusExceptionIfNecessary

void throwFacebookResponseStatusExceptionIfNecessary(String json,
 Integer httpStatusCode)

Throws an exception if Facebook returned an error response. Using the Graph API, it's possible to see both the new Graph API-style errors as well as Legacy API-style errors, so we have to handle both here. This method extracts relevant information from the error JSON and throws an exception which encapsulates it for end-user consumption.

For Graph API errors:

If the error JSON field is present, we've got a response status error for this API call.

For Legacy errors (e.g. FQL):

If the error_code JSON field is present, we've got a response status error for this API call.

Parameters:

json - The JSON returned by Facebook in response to an API call.

httpStatusCode - The HTTP status code returned by the server, e.g. 500.

Throws:

FacebookGraphException - If the JSON contains a Graph API error response.

FacebookResponseStatusException - If the JSON contains an Legacy API error response.

FacebookJsonMappingException - If an error occurs while processing the JSON.

throwBatchFacebookResponseStatusExceptionIfNecessary

void throwBatchFacebookResponseStatusExceptionIfNecessary(String json,
 Integer httpStatusCode)

If the error and error_description JSON fields are present, we've got a response status error for this batch API call. Extracts relevant information from the JSON and throws an exception which encapsulates it for end-user consumption.

Parameters:

json - The JSON returned by Facebook in response to a batch API call.

httpStatusCode - The HTTP status code returned by the server, e.g. 500.

Throws:

FacebookResponseStatusException - If the JSON contains an error code.

FacebookJsonMappingException - If an error occurs while processing the JSON.

Since:

1.6.5