atg.rest.input
Class JSONInputCustomizer

java.lang.Object
  atg.nucleus.logging.VariableArgumentApplicationLoggingImpl
      atg.nucleus.GenericService
          atg.rest.input.RestInputCustomizerImpl
              atg.rest.input.JSONInputCustomizer

All Implemented Interfaces:

atg.naming.AbsoluteNameable, NameContextBindingListener, NameContextElement, atg.naming.NameContextParentable, NameResolver, AdminableService, atg.nucleus.Configured, ApplicationLogging, atg.nucleus.logging.ApplicationLoggingSender, atg.nucleus.logging.TraceApplicationLogging, VariableArgumentApplicationLogging, ComponentNameResolver, Service, ServiceListener, RestInputCustomizer, java.util.EventListener

public class JSONInputCustomizer
extends RestInputCustomizerImpl

This class implements a JSON REST input customizer. A REST input customizer is used to parse data which is sent in a REST request.

See Also:

RestInputCustomizer

Field Summary

static java.lang.String	CLASS_VERSION Class version string
static java.lang.String	MAP_CLASS

Fields inherited from class atg.rest.input.RestInputCustomizerImpl

SPACE

Fields inherited from class atg.nucleus.GenericService

SERVICE_INFO_KEY

Fields inherited from interface atg.nucleus.logging.TraceApplicationLogging

DEFAULT_LOG_TRACE_STATUS

Fields inherited from interface atg.nucleus.logging.ApplicationLogging

DEFAULT_LOG_DEBUG_STATUS, DEFAULT_LOG_ERROR_STATUS, DEFAULT_LOG_INFO_STATUS, DEFAULT_LOG_WARNING_STATUS

Constructor Summary

JSONInputCustomizer()
Constructor

Method Summary

java.util.Map<java.lang.String,java.lang.Object>	convertToMap(java.lang.Object pObject, DynamoHttpServletRequest pRequest, DynamoHttpServletResponse pResponse) Converts the supplied object to a Map of parameters.
java.lang.Class<?>	getContainerClass() Returns the JSONObject class object, the container used for JSON data.
java.lang.Object	instantiateObjectParameter(java.lang.Object pJSON, DynamoHttpServletRequest pRequest, DynamoHttpServletResponse pResponse) Instantiates an object argument from the given JSONObject.
protected boolean	isMultiValued(java.lang.Class<?> pClass) Returns true if pClass is a Collection (List or Set) or a Map.
static JSONObject	isValidJSONString(java.lang.String pString) Returns a JSONObject if the specified string is a valid JSON string, null otherwise
boolean	isValidTypeString(java.lang.String pData) Returns true if the specified string is a valid JSON string, false otherwise
java.lang.Object	parseString(java.lang.String pData, DynamoHttpServletRequest pRequest, DynamoHttpServletResponse pResponse) Returns a JSONObject representing the data from the pData string
protected java.lang.Object	processJSONMultiValue(java.lang.Object pObj, JSONObject pMultiValueDescriptor, java.lang.Class<?> pPropType, java.lang.String pPropName, DynamoHttpServletRequest pRequest, DynamoHttpServletResponse pResponse) process a json multi value, convert it into a java object
protected java.lang.Object	produceMultivalueComponentObject(java.lang.Object pCurrentValue, JSONObject pMultiValueDescriptor, DynamoHttpServletRequest pRequest, DynamoHttpServletResponse pResponse) produce a result object for a multivalue component item
java.lang.String[]	splitMultipleStringsAtCharacter(java.lang.String pData, char pChar) Splits multiple json strings at the specified character

Methods inherited from class atg.rest.input.RestInputCustomizerImpl

getAcceptableMimeTypes, getEncoding, getFormat, getInputCustomizer, getInputCustomizer, getMapKeyElementString, getMapValueElementString, javaInstanceForClass, setAcceptableMimeTypes, setEncoding, setFormat, setMapKeyElementString, setMapValueElementString

Methods inherited from class atg.nucleus.GenericService

addLogListener, createAdminServlet, doStartService, doStopService, getAbsoluteName, getAdminServlet, getAdminServletOutputStreamEncoding, getLoggingForVlogging, getLogListenerCount, getLogListeners, getName, getNameContext, getNucleus, getRoot, getServiceConfiguration, getServiceInfo, isAdminServletUseServletOutputStream, isLoggingDebug, isLoggingError, isLoggingInfo, isLoggingTrace, isLoggingWarning, isRunning, logDebug, logDebug, logDebug, logError, logError, logError, logInfo, logInfo, logInfo, logTrace, logTrace, logTrace, logWarning, logWarning, logWarning, nameContextElementBound, nameContextElementUnbound, removeLogListener, reResolveThis, resolveName, resolveName, resolveName, resolveName, sendLogEvent, setAdminServletOutputStreamEncoding, setAdminServletUseServletOutputStream, setLoggingDebug, setLoggingError, setLoggingInfo, setLoggingTrace, setLoggingWarning, setNucleus, setServiceInfo, startService, stopService

Methods inherited from class atg.nucleus.logging.VariableArgumentApplicationLoggingImpl

vlogDebug, vlogDebug, vlogDebug, vlogDebug, vlogDebugTrace, vlogError, vlogError, vlogError, vlogError, vlogInfo, vlogInfo, vlogInfo, vlogInfo, vlogTrace, vlogTrace, vlogTrace, vlogTrace, vlogWarning, vlogWarning, vlogWarning, vlogWarning

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

CLASS_VERSION

public static java.lang.String CLASS_VERSION

Class version string

MAP_CLASS

public static java.lang.String MAP_CLASS

Constructor Detail

JSONInputCustomizer

public JSONInputCustomizer()

Constructor

Method Detail

getContainerClass

public java.lang.Class<?> getContainerClass()

Returns the JSONObject class object, the container used for JSON data.

Returns:

the JSONObject class object

parseString

public java.lang.Object parseString(java.lang.String pData,
                                    DynamoHttpServletRequest pRequest,
                                    DynamoHttpServletResponse pResponse)
                             throws RestException

Returns a JSONObject representing the data from the pData string

Parameters:

pData - a String which contains the data stream

pRequest - the servlet request

pResponse - the servlet response

Returns:

an JSONObject representing the data from pData

Throws:

RestException - if the string in pData cannot be parsed

convertToMap

public java.util.Map<java.lang.String,java.lang.Object> convertToMap(java.lang.Object pObject,
                                                                     DynamoHttpServletRequest pRequest,
                                                                     DynamoHttpServletResponse pResponse)
                                                              throws RestException

Converts the supplied object to a Map of parameters. The object must be a JSONObject.

Parameters:

pObject - the object to convert, a JSONObject

pRequest - the servlet request

pResponse - the servlet response

Returns:

a Map with the values from pObject

Throws:

RestException - if pObject is not a JSONObject or if an error occurs reading from pObject

instantiateObjectParameter

public java.lang.Object instantiateObjectParameter(java.lang.Object pJSON,
                                                   DynamoHttpServletRequest pRequest,
                                                   DynamoHttpServletResponse pResponse)
                                            throws RestException

Instantiates an object argument from the given JSONObject. Here's an example of nested multi-valued collections

 {arg1 : {
   "atg-rest-class-type":"foo.class.WithNestedMultis",
   "atg-rest-class-descriptor": {
     "myListOfSets": {
       "container-class": "java.util.ArrayList",
       "element-class": "java.util.HashSet"
     }
   },
   "myListOfSets": [["red","blue"],["green","yellow"]]
 }}
 

See "Nested Multiple Value Objects in Input" section of ATG Web Services and Integration Framework Guide.

Parameters:

pJSON - the JSONObject which contains the data for the object to instantiate

pRequest - the servlet request

pResponse - the servlet response

Returns:

the instantiated object

Throws:

RestException - if there is neither an "atg-rest-class-type" property or "class" property or if pJSON is not a JSONObject

isMultiValued

protected boolean isMultiValued(java.lang.Class<?> pClass)

Returns true if pClass is a Collection (List or Set) or a Map.

Parameters:

pClass - The class we are testing to see if it's multi-valued.

Returns:

true if pClass is multi-valued ISSUE: Should we return true if the class is an array?

processJSONMultiValue

protected java.lang.Object processJSONMultiValue(java.lang.Object pObj,
                                                 JSONObject pMultiValueDescriptor,
                                                 java.lang.Class<?> pPropType,
                                                 java.lang.String pPropName,
                                                 DynamoHttpServletRequest pRequest,
                                                 DynamoHttpServletResponse pResponse)
                                          throws RestException

process a json multi value, convert it into a java object

Parameters:

pObj - the json object

pMultiValueDescriptor - the type descriptor

pPropType - the property type for the object

pPropName - the name of the property

pRequest - the Dynamo request

pResponse - the Dynamo response

Returns:

the resulting java multi value object

Throws:

java.lang.Exception - if there was an error creating the java multi value object

RestException

produceMultivalueComponentObject

protected java.lang.Object produceMultivalueComponentObject(java.lang.Object pCurrentValue,
                                                            JSONObject pMultiValueDescriptor,
                                                            DynamoHttpServletRequest pRequest,
                                                            DynamoHttpServletResponse pResponse)
                                                     throws RestException

produce a result object for a multivalue component item

Parameters:

pCurrentValue - the current json value

pMultiValueDescriptor - the current type descriptor

pRequest - the dynamo request

pResponse - the dynamo response

Returns:

the java object for the given json value

Throws:

java.lang.Exception - if there was an error producing the java object

RestException

splitMultipleStringsAtCharacter

public java.lang.String[] splitMultipleStringsAtCharacter(java.lang.String pData,
                                                          char pChar)

Splits multiple json strings at the specified character

Parameters:

pData - the string to split

pChar - the character to split at

Returns:

a String array with each json string

isValidJSONString

public static JSONObject isValidJSONString(java.lang.String pString)

Returns a JSONObject if the specified string is a valid JSON string, null otherwise

Parameters:

pString - the string to test

Returns:

a JSONObject if the specified string is a valid JSON string, null otherwise

isValidTypeString

public boolean isValidTypeString(java.lang.String pData)

Returns true if the specified string is a valid JSON string, false otherwise

Parameters:

pData - the string to test

Returns:

true if the specified string is a valid JSON string, false otherwise