com.sap.pdms.commons.util.json

Class JsonMapper

java.lang.Object

com.sap.pdms.commons.util.json.JsonMapper

public class JsonMapper
extends Object

A utility for marshalling and unmarshalling JSON to/from Java objects.

Method Summary

Modifier and Type	Method and Description
static <T> T	readValue(String jsonString, Class<T> c) Unmarshalls a JSON string into a Java object.
static <T> void	writeValue(T o, Class<T> c, List<String> arrayProperties, OutputStream os) Marshalls a Java object into a JSON string and writes it to an OutputStream.
static <T> void	writeValue(T o, OutputStream os) Marshalls a Java object into a JSON string and writes it to an OutputStream.
static <T> String	writeValueAsString(T o) Marshalls a Java object into a JSON string.
static <T> String	writeValueAsString(T o, Class<T> c, List<String> arrayProperties) Marshalls a Java object into a JSON string.
static <T> String	writeValueAsString(T o, List<String> arrayProperties) Marshalls a Java object into a JSON string.

Methods inherited from class java.lang.Object

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

Method Detail

readValue

public static <T> T readValue(String jsonString,
                              Class<T> c)
                       throws JsonException

Unmarshalls a JSON string into a Java object.

Type Parameters:

T - the generic return type

Parameters:

jsonString - the JSON string

c - the target class of the unmarshalling

Returns:

a Java object created from the provided JSON

Throws:

JsonException - if there is an error during unmarshalling

writeValue

public static <T> void writeValue(T o,
                                  Class<T> c,
                                  List<String> arrayProperties,
                                  OutputStream os)
                           throws JsonException

Marshalls a Java object into a JSON string and writes it to an OutputStream.

Type Parameters:

T - the generic type of the object

Parameters:

o - the object to marshall

c - the class of the object to be marshalled

arrayProperties - the array properties

os - the output stream

Throws:

JsonException - if there is an error during marshalling

writeValue

public static <T> void writeValue(T o,
                                  OutputStream os)
                           throws JsonException

Marshalls a Java object into a JSON string and writes it to an OutputStream.

Type Parameters:

T - the type of the object to be marshalled

Parameters:

o - the object to be marshalled

os - the output stream

Throws:

JsonException - if there is an error during marshalling

writeValueAsString

public static <T> String writeValueAsString(T o,
                                            Class<T> c,
                                            List<String> arrayProperties)
                                     throws JsonException

Marshalls a Java object into a JSON string.

Type Parameters:

T - the generic type of the object

Parameters:

o - the object to be marshalled

c - the class of the object to be marshalled

arrayProperties - the array properties

Returns:

a JSON string representing the object

Throws:

JsonException - if there is an error during marshalling

writeValueAsString

public static <T> String writeValueAsString(T o,
                                            List<String> arrayProperties)
                                     throws JsonException

Marshalls a Java object into a JSON string.

Type Parameters:

T - the generic type of the object

Parameters:

o - the object to be marshalled

arrayProperties - the array properties

Returns:

a JSON string representing the object

Throws:

JsonException - if there is an error during marshalling

writeValueAsString

public static <T> String writeValueAsString(T o)
                                     throws JsonException

Marshalls a Java object into a JSON string.

Type Parameters:

T - the generic type of the object

Parameters:

o - the object to be marshalled

Returns:

a JSON string representing the object

Throws:

JsonException - if there is an error during marshalling