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package com.sun.jersey.api.json;
import com.sun.jersey.json.impl.BaseJSONMarshaller;
import com.sun.jersey.json.impl.BaseJSONUnmarshaller;
import com.sun.jersey.json.impl.JSONMarshallerImpl;
import com.sun.jersey.json.impl.JSONUnmarshallerImpl;
import com.sun.xml.bind.v2.runtime.JAXBContextImpl;
import javax.xml.bind.*;
import java.util.*;
/**
* An adaption of {@link JAXBContext} that supports marshalling
* and unmarshalling of JAXB beans using the JSON format.
* <p>
* The JSON format may be configured by using a {@link JSONConfiguration} object
* as a constructor parameter of this class.
*/
public final class JSONJAXBContext extends JAXBContext implements JSONConfigurated {
/**
* A namespace for JSONJAXBContext related properties names.
*/
@Deprecated
public static final String NAMESPACE = "com.sun.jersey.impl.json.";
/**
* Enumeration of supported JSON notations.
*/
@Deprecated
public enum JSONNotation {
/**
* The mapped (default) JSON notation.
*/
@Deprecated
MAPPED,
/**
* The mapped Jettison JSON notation.
*/
@Deprecated
MAPPED_JETTISON,
/**
* The mapped Badgerfish JSON notation.
*/
@Deprecated
BADGERFISH,
/**
* The natural JSON notation, leveraging tight JAXB RI integration.
*/
@Deprecated
NATURAL
};
/**
* JSON notation property is now deprecated. See {@link JSONConfiguration}.
* <p>
* The type of this property is enum type {@link JSONNotation}.
* <p>
* The value may be one of the following that are the currently supported JSON
* notations: <code>JSONNotation.MAPPED</code>,
* <code>JSONNotation.MAPPED_JETTISON</code> and <code>JSONNotation.BADGERFISH</code>
* <p>
* The default value is <code>JSONNotation.MAPPED</code>.
*/
@Deprecated
public static final String JSON_NOTATION = NAMESPACE + "notation";
/**
* JSON enabled property is now deprecated. See {@link JSONConfiguration}.
* <p>
* The type of this property is {@link Boolean}
* <p>
* If set to true, JSON will be serialized/deserialized instead of XML
* <p>
* The default value is false.
*/
@Deprecated
public static final String JSON_ENABLED = NAMESPACE + "enabled";
/**
* XML root element unwrapping property is now deprecated. See {@link JSONConfiguration}.
* <p>
* The type of this property is {@link Boolean}
* <p>
* If set to true, JSON code corresponding to the XML root element will be stripped out
* for <code>JSONNotation.MAPPED</code> (default) notation.
* <p>
* The default value is false.
*/
@Deprecated
public static final String JSON_ROOT_UNWRAPPING = NAMESPACE + "root.unwrapping";
/**
* JSON arrays property is now deprecated. See {@link JSONConfiguration}.
* This property is valid for the <code>JSONNotation.MAPPED</code> notation only.
* <p>
* The type of this property is <code>java.util.Collection<String></code>.
* <p>
* The value is a collection of string values that are
* object names.
* The value of an object name in the JSON document that exists in the collection
* of object names will be declared as an array, even if only one
* element is present.
* <p>
* For example, consider that the property value is not set and the
* JSON document is <code>{ ..., "arr1":"single element", ... }</code>.
* If the property value is set to contain <code>"arr1"</code> then
* the JSON document would be <code>{ ..., "arr1":["single element"], ... }</code>.
* <p>
* The default value is an empty collection.
*/
@Deprecated
public static final String JSON_ARRAYS = NAMESPACE + "arrays";
/**
* JSON non-string values property is now deprecated. See {@link JSONConfiguration}.
* This property is valid for the <code>JSONNotation.MAPPED</code> notation only.
* <p>
* The type of this property is <code>Collection<String></code>.
* <p>
* The value is collection of string values that are
* object names.
* The value of an object name in the JSON document that exists in the collection
* of object names will be declared as non-string value, which is not surrounded
* by double quotes.
* <p>
* For example, consider that the property value is not set and the
* JSON document is <code>{ ..., "anumber":"12", ... }</code>.
* If the property value is set to contain <code>"anumber"</code>
* then the JSON document would be <code>{ ..., "anumber":12, ... }</code>.
* <p>
* The default value is an empty collection.
*/
@Deprecated
public static final String JSON_NON_STRINGS = NAMESPACE + "non.strings";
/**
* JSON attributes as elements property is now deprecated. See {@link JSONConfiguration}.
* This property is valid for the <code>JSONNotation.MAPPED</code> notation only.
* <p>
* The type of this property is <code>Collection<String></code>.
* <p>
* The value is a collection of string values that are
* object names that correspond to XML attribute information items.
* The value of an object name in the JSON document that exists in the collection
* of object names will be declared as an element as not as an attribute if
* the object corresponds to an XML attribute information item.
* <p>
* For example, consider that the property value is not set and the
* JSON document is <code>{ ..., "@number":"12", ... }</code>.
* If the property value is set contain <code>"number"</code>
* then the JSON document would be <code>{ ..., "number":"12", ... }</code>.
* <p>
* The default value is an empty collection.
*/
@Deprecated
public static final String JSON_ATTRS_AS_ELEMS = NAMESPACE + "attrs.as.elems";
/**
* XML to JSON namespace mapping property is now deprecated. See {@link JSONConfiguration}.
* This property is valid for the MAPPED_JETTISON notation only.
* <p>
* <p>
* The type of this property is <code>Map<String,String></code>.
* <p>
* The value is a map with zero or more
* key/value pairs, where the key is an XML namespace and the value
* is the prefix to use as the replacement for the XML namespace.
* <p>
* The default value is a map with zero key/value pairs.
*/
@Deprecated
public static final String JSON_XML2JSON_NS = NAMESPACE + "xml.to.json.ns";
private static final Map<String, Object> defaultJsonProperties = new HashMap<String, Object>();
static {
defaultJsonProperties.put(JSON_NOTATION, JSONNotation.MAPPED);
defaultJsonProperties.put(JSON_ROOT_UNWRAPPING, Boolean.TRUE);
}
private JSONConfiguration jsonConfiguration;
private final JAXBContext jaxbContext;
/**
* Constructs a new instance with default {@link JSONConfiguration}.
*
* @param classesToBeBound list of java classes to be recognized by the
* new JSONJAXBContext. Can be empty, in which case a JSONJAXBContext
* that only knows about spec-defined classes will be returned.
* @throws JAXBException if an error was encountered while creating the
* underlying JAXBContext.
*/
public JSONJAXBContext(Class... classesToBeBound) throws JAXBException {
this(JSONConfiguration.DEFAULT, classesToBeBound);
}
/**
* Constructs a new instance with given {@link JSONConfiguration}.
*
* @param config {@link JSONConfiguration}, can not be null
* @param classesToBeBound list of java classes to be recognized by the
* new JSONJAXBContext. Can be empty, in which case a JSONJAXBContext
* that only knows about spec-defined classes will be returned.
* @throws JAXBException if an error was encountered while creating the
* underlying JAXBContext.
*/
public JSONJAXBContext(final JSONConfiguration config, final Class... classesToBeBound) throws JAXBException {
if (config == null) {
throw new IllegalArgumentException("JSONConfiguration MUST not be null");
}
jsonConfiguration = config;
if (config.getNotation() == JSONConfiguration.Notation.NATURAL) {
jaxbContext = JAXBContext.newInstance(classesToBeBound,
Collections.singletonMap(JAXBContextImpl.RETAIN_REFERENCE_TO_INFO, true));
} else {
jaxbContext = JAXBContext.newInstance(classesToBeBound);
}
}
/**
* Constructs a new instance with a custom set of properties.
* The default {@link JSONConfiguration} is used if no (now deprecated)
* JSON related properties are specified
*
* @param classesToBeBound list of java classes to be recognized by the
* new JSONJAXBContext. Can be empty, in which case a JSONJAXBContext
* that only knows about spec-defined classes will be returned.
* @param properties the custom set of properties. If it contains(now deprecated) JSON related properties,
* then a non-default {@link JSONConfiguration} is used reflecting the JSON properties
* @throws JAXBException if an error was encountered while creating the
* underlying JAXBContext.
*/
public JSONJAXBContext(Class[] classesToBeBound, Map<String, Object> properties)
throws JAXBException {
jaxbContext = JAXBContext.newInstance(classesToBeBound,
createProperties(properties));
if (jsonConfiguration == null) {
jsonConfiguration = JSONConfiguration.DEFAULT;
}
}
/**
* Constructs a new instance with a custom set of properties.
* If no (now deprecated) JSON related properties are specified,
* the {@link JSONConfiguration#DEFAULT} is used as {@link JSONConfiguration}
*
* @param config {@link JSONConfiguration}, can not be null
* @param classesToBeBound list of java classes to be recognized by the
* new JSONJAXBContext. Can be empty, in which case a JSONJAXBContext
* that only knows about spec-defined classes will be returned.
* @param properties the custom set of properties.
* @throws JAXBException if an error was encountered while creating the
* underlying JAXBContext.
*/
public JSONJAXBContext(final JSONConfiguration config, final Class[] classesToBeBound, final Map<String, Object> properties)
throws JAXBException {
if (config == null) {
throw new IllegalArgumentException("JSONConfiguration MUST not be null");
}
jsonConfiguration = config;
if (config.getNotation() == JSONConfiguration.Notation.NATURAL) {
Map<String, Object> myProps = new HashMap<String, Object>(properties.size() + 1);
myProps.putAll(properties);
myProps.put(JAXBContextImpl.RETAIN_REFERENCE_TO_INFO, Boolean.TRUE);
jaxbContext = JAXBContext.newInstance(classesToBeBound, myProps);
} else {
jaxbContext = JAXBContext.newInstance(classesToBeBound, properties);
}
}
/**
* Construct a new instance of using context class loader of the thread
* with default {@link JSONConfiguration}.
*
* @param contextPath list of java package names that contain schema
* derived class and/or java to schema (JAXB-annotated) mapped
* classes
* @throws JAXBException if an error was encountered while creating the
* underlying JAXBContext.
*/
public JSONJAXBContext(String contextPath)
throws JAXBException {
this(JSONConfiguration.DEFAULT, contextPath);
}
/**
* Construct a new instance of using context class loader of the thread
* with given {@link JSONConfiguration}.
*
* @param config {@link JSONConfiguration}, can not be null
* @param contextPath list of java package names that contain schema
* derived class and/or java to schema (JAXB-annotated) mapped
* classes
* @throws JAXBException if an error was encountered while creating the
* underlying JAXBContext.
*/
public JSONJAXBContext(JSONConfiguration config, String contextPath)
throws JAXBException {
if (config == null) {
throw new IllegalArgumentException("JSONConfiguration MUST not be null");
}
if (config.getNotation() == JSONConfiguration.Notation.NATURAL) {
jaxbContext = JAXBContext.newInstance(contextPath,
Thread.currentThread().getContextClassLoader(),
Collections.singletonMap(JAXBContextImpl.RETAIN_REFERENCE_TO_INFO, true));
} else {
jaxbContext = JAXBContext.newInstance(contextPath, Thread.currentThread().getContextClassLoader());
}
jsonConfiguration = config;
}
/**
* Construct a new instance using a specified class loader with
* default {@link JSONConfiguration}.
*
* @param contextPath list of java package names that contain schema
* derived class and/or java to schema (JAXB-annotated) mapped
* classes
* @param classLoader
* @throws JAXBException if an error was encountered while creating the
* underlying JAXBContext.
*/
public JSONJAXBContext(String contextPath, ClassLoader classLoader)
throws JAXBException {
jaxbContext = JAXBContext.newInstance(contextPath, classLoader);
jsonConfiguration = JSONConfiguration.DEFAULT;
}
/**
* Construct a new instance using a specified class loader and
* a custom set of properties. {@link JSONConfiguration} is set to default,
* if user does not specify any (now deprecated) JSON related properties
*
* @param contextPath list of java package names that contain schema
* derived class and/or java to schema (JAXB-annotated) mapped
* classes
* @param classLoader
* @param properties the custom set of properties.
* @throws JAXBException if an error was encountered while creating the
* underlying JAXBContext.
*/
public JSONJAXBContext(String contextPath, ClassLoader classLoader, Map<String, Object> properties)
throws JAXBException {
jaxbContext = JAXBContext.newInstance(contextPath, classLoader, createProperties(properties));
if (jsonConfiguration == null) {
jsonConfiguration = JSONConfiguration.DEFAULT;
}
}
/**
* Construct a new instance using a specified class loader,
* set of properties and {@link JSONConfiguration} .
*
* @param config {@link JSONConfiguration}, can not be null
* @param contextPath list of java package names that contain schema
* derived class and/or java to schema (JAXB-annotated) mapped
* classes
* @param classLoader
* @param properties the custom set of properties.
* @throws JAXBException if an error was encountered while creating the
* underlying JAXBContext.
*/
public JSONJAXBContext(JSONConfiguration config, String contextPath, ClassLoader classLoader, Map<String, Object> properties)
throws JAXBException {
if (config == null) {
throw new IllegalArgumentException("JSONConfiguration MUST not be null");
}
if (config.getNotation() == JSONConfiguration.Notation.NATURAL) {
Map<String, Object> myProps = new HashMap<String, Object>(properties.size() + 1);
myProps.putAll(properties);
myProps.put(JAXBContextImpl.RETAIN_REFERENCE_TO_INFO, Boolean.TRUE);
jaxbContext = JAXBContext.newInstance(contextPath, classLoader, myProps);
} else {
jaxbContext = JAXBContext.newInstance(contextPath, classLoader, properties);
}
jsonConfiguration = config;
}
/**
* Get a {@link JSONMarshaller} from a {@link Marshaller}.
*
* @param marshaller the JAXB marshaller.
* @return the JSON marshaller.
*/
public static JSONMarshaller getJSONMarshaller(Marshaller marshaller) {
if (marshaller instanceof JSONMarshaller) {
return (JSONMarshaller) marshaller;
} else {
return new BaseJSONMarshaller(marshaller, JSONConfiguration.DEFAULT);
}
}
/**
* Get a {@link JSONUnmarshaller} from a {@link Unmarshaller}.
*
* @param unmarshaller the JAXB unmarshaller.
* @return the JSON unmarshaller.
*/
public static JSONUnmarshaller getJSONUnmarshaller(Unmarshaller unmarshaller) {
if (unmarshaller instanceof JSONUnmarshaller) {
return (JSONUnmarshaller) unmarshaller;
} else {
return new BaseJSONUnmarshaller(unmarshaller, JSONConfiguration.DEFAULT);
}
}
/**
* Get the JSON configuration.
*
* @return the JSON configuration.
*/
public JSONConfiguration getJSONConfiguration() {
return jsonConfiguration;
}
/**
* Create a JSON unmarshaller.
*
* @return the JSON unmarshaller
*
* @throws JAXBException if there is an error creating the unmarshaller.
*/
public JSONUnmarshaller createJSONUnmarshaller() throws JAXBException {
return new JSONUnmarshallerImpl(this, getJSONConfiguration());
}
/**
* Create a JSON marshaller.
*
* @return the JSON marshaller.
*
* @throws JAXBException if there is an error creating the marshaller.
*/
public JSONMarshaller createJSONMarshaller() throws JAXBException {
return new JSONMarshallerImpl(this, getJSONConfiguration());
}
/**
* Overrides underlaying createUnmarshaller method and returns
* an unmarshaller which is capable of JSON deserialization.
*
* @return unmarshaller instance with JSON capabilities
* @throws javax.xml.bind.JAXBException
*/
@Override
public Unmarshaller createUnmarshaller() throws JAXBException {
return new JSONUnmarshallerImpl(jaxbContext, getJSONConfiguration());
}
/**
* Overrides underlaying createMarshaller method and returns
* a marshaller which is capable of JSON serialization.
*
* @return marshaller instance with JSON capabilities
* @throws javax.xml.bind.JAXBException
*/
@Override
public Marshaller createMarshaller() throws JAXBException {
return new JSONMarshallerImpl(jaxbContext, getJSONConfiguration());
}
/**
* Simply delegates to underlying JAXBContext implementation.
*
* @return what underlying JAXBContext returns
* @throws javax.xml.bind.JAXBException
*/
@Override
public Validator createValidator() throws JAXBException {
return jaxbContext.createValidator();
}
static final Map<String, JSONConfiguration.Notation> _notationMap = new HashMap<String, JSONConfiguration.Notation>() {
{
put(JSONJAXBContext.JSONNotation.BADGERFISH.toString(), JSONConfiguration.Notation.BADGERFISH);
put(JSONJAXBContext.JSONNotation.MAPPED.toString(), JSONConfiguration.Notation.MAPPED);
put(JSONJAXBContext.JSONNotation.MAPPED_JETTISON.toString(), JSONConfiguration.Notation.MAPPED_JETTISON);
put(JSONJAXBContext.JSONNotation.NATURAL.toString(), JSONConfiguration.Notation.NATURAL);
}
};
private Map<String, Object> createProperties(Map<String, Object> properties) {
Map<String, Object> workProperties = new HashMap<String, Object>();
workProperties.putAll(defaultJsonProperties);
workProperties.putAll(properties);
if (JSONJAXBContext.JSONNotation.NATURAL == workProperties.get(JSONJAXBContext.JSON_NOTATION)) {
workProperties.put(JAXBContextImpl.RETAIN_REFERENCE_TO_INFO, Boolean.TRUE);
}
processProperties(workProperties);
return workProperties;
}
private final void processProperties(Map<String, Object> properties) {
final Collection<String> jsonKeys = new HashSet<String>();
for (String k : Collections.unmodifiableSet(properties.keySet())) {
if (k.startsWith(NAMESPACE)) {
jsonKeys.add(k);
}
}
if (!jsonKeys.isEmpty()) {
if (jsonConfiguration == null) {
JSONConfiguration.Notation pNotation = JSONConfiguration.Notation.MAPPED;
if (properties.containsKey(JSONJAXBContext.JSON_NOTATION)) {
Object nO = properties.get(JSONJAXBContext.JSON_NOTATION);
if ((nO instanceof JSONJAXBContext.JSONNotation) || (nO instanceof String)) {
pNotation = _notationMap.get(nO.toString());
}
}
jsonConfiguration = getConfiguration(pNotation, properties);
}
}
for (String k : jsonKeys) {
properties.remove(k);
}
}
private JSONConfiguration getConfiguration(JSONConfiguration.Notation pNotation,
Map<String, Object> properties) {
String[] a = new String[0];
switch (pNotation) {
case BADGERFISH:
return JSONConfiguration.badgerFish().build();
case MAPPED_JETTISON:
JSONConfiguration.MappedJettisonBuilder mappedJettisonBuilder = JSONConfiguration.mappedJettison();
if (properties.containsKey(JSONJAXBContext.JSON_XML2JSON_NS)) {
mappedJettisonBuilder.xml2JsonNs((Map<String, String>) properties.get(JSONJAXBContext.JSON_XML2JSON_NS));
}
return mappedJettisonBuilder.build();
case NATURAL:
return JSONConfiguration.natural().build();
case MAPPED:
default: {
JSONConfiguration.MappedBuilder mappedBuilder = JSONConfiguration.mapped();
if (properties.containsKey(JSONJAXBContext.JSON_ARRAYS)) {
mappedBuilder.arrays(((Collection<String>) properties.get(JSONJAXBContext.JSON_ARRAYS)).toArray(a));
}
if (properties.containsKey(JSONJAXBContext.JSON_ATTRS_AS_ELEMS)) {
mappedBuilder.attributeAsElement(((Collection<String>) properties.get(JSONJAXBContext.JSON_ATTRS_AS_ELEMS)).toArray(a));
}
if (properties.containsKey(JSONJAXBContext.JSON_NON_STRINGS)) {
mappedBuilder.nonStrings(((Collection<String>) properties.get(JSONJAXBContext.JSON_NON_STRINGS)).toArray(a));
}
if (properties.containsKey(JSONJAXBContext.JSON_ROOT_UNWRAPPING)) {
mappedBuilder.rootUnwrapping((Boolean) properties.get(JSONJAXBContext.JSON_ROOT_UNWRAPPING));
}
return mappedBuilder.build();
}
}
}
}