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jadex.transformation.jsonserializer.JsonTraverser Maven / Gradle / Ivy
package jadex.transformation.jsonserializer;
import java.io.ByteArrayOutputStream;
import java.io.StringWriter;
import java.io.UnsupportedEncodingException;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import com.eclipsesource.json.Json;
import com.eclipsesource.json.JsonObject;
import com.eclipsesource.json.JsonValue;
import com.eclipsesource.json.PrettyPrint;
import jadex.common.SReflect;
import jadex.common.SUtil;
import jadex.common.transformation.IStringConverter;
import jadex.common.transformation.STransformation;
import jadex.common.transformation.traverser.DefaultErrorReporter;
import jadex.common.transformation.traverser.IErrorReporter;
import jadex.common.transformation.traverser.ITraverseProcessor;
import jadex.common.transformation.traverser.Traverser;
import jadex.transformation.jsonserializer.processors.JsonArrayProcessor;
import jadex.transformation.jsonserializer.processors.JsonBeanProcessor;
import jadex.transformation.jsonserializer.processors.JsonBigIntegerProcessor;
import jadex.transformation.jsonserializer.processors.JsonByteArrayProcessor;
import jadex.transformation.jsonserializer.processors.JsonCalendarProcessor;
import jadex.transformation.jsonserializer.processors.JsonCertificateProcessor;
import jadex.transformation.jsonserializer.processors.JsonClassInfoProcessor;
import jadex.transformation.jsonserializer.processors.JsonClassProcessor;
import jadex.transformation.jsonserializer.processors.JsonCollectionProcessor;
import jadex.transformation.jsonserializer.processors.JsonColorProcessor;
import jadex.transformation.jsonserializer.processors.JsonCurrencyProcessor;
import jadex.transformation.jsonserializer.processors.JsonDateProcessor;
import jadex.transformation.jsonserializer.processors.JsonEnumProcessor;
import jadex.transformation.jsonserializer.processors.JsonImageProcessor;
import jadex.transformation.jsonserializer.processors.JsonInetAddressProcessor;
import jadex.transformation.jsonserializer.processors.JsonJsonStringProcessor;
import jadex.transformation.jsonserializer.processors.JsonLRUProcessor;
import jadex.transformation.jsonserializer.processors.JsonLocalDateTimeProcessor;
import jadex.transformation.jsonserializer.processors.JsonLogRecordProcessor;
import jadex.transformation.jsonserializer.processors.JsonLoggingLevelProcessor;
import jadex.transformation.jsonserializer.processors.JsonMapProcessor;
import jadex.transformation.jsonserializer.processors.JsonMultiCollectionProcessor;
import jadex.transformation.jsonserializer.processors.JsonNestedMapProcessor;
import jadex.transformation.jsonserializer.processors.JsonOptionalProcessor;
import jadex.transformation.jsonserializer.processors.JsonPrimitiveObjectProcessor;
import jadex.transformation.jsonserializer.processors.JsonPrimitiveProcessor;
import jadex.transformation.jsonserializer.processors.JsonReadContext;
import jadex.transformation.jsonserializer.processors.JsonRecordProcessor;
import jadex.transformation.jsonserializer.processors.JsonRectangleProcessor;
import jadex.transformation.jsonserializer.processors.JsonSimpleDateFormatProcessor;
import jadex.transformation.jsonserializer.processors.JsonStackTraceElementProcessor;
import jadex.transformation.jsonserializer.processors.JsonThrowableProcessor;
import jadex.transformation.jsonserializer.processors.JsonTimestampProcessor;
import jadex.transformation.jsonserializer.processors.JsonToStringProcessor;
import jadex.transformation.jsonserializer.processors.JsonTupleProcessor;
import jadex.transformation.jsonserializer.processors.JsonURIProcessor;
import jadex.transformation.jsonserializer.processors.JsonURLProcessor;
import jadex.transformation.jsonserializer.processors.JsonUUIDProcessor;
import jadex.transformation.jsonserializer.processors.JsonWriteContext;
/**
* The JsonTraverser converts a preparsed JsonValue object to
* a corresponding Java object.
*
* todo: introduce boolean in traverser that checks if read a json object in map is ok
*/
public class JsonTraverser extends Traverser
{
public final static String CLASSNAME_MARKER = "__classname";
public final static String ID_MARKER = "__id";
public final static String REFERENCE_MARKER = "__ref";
public final static String ARRAY_MARKER = "__array";
public final static String COLLECTION_MARKER = "__collection";
protected static Traverser writetraverser;
protected static JsonTraverser readtraverser;
public static List writeprocs;
public static List readprocs;
public static List nestedreadprocs;
static
{
writeprocs = new ArrayList();
writeprocs.add(new JsonRectangleProcessor());
writeprocs.add(new JsonImageProcessor());
writeprocs.add(new JsonColorProcessor());
writeprocs.add(new JsonDateProcessor());
writeprocs.add(new JsonTimestampProcessor());
writeprocs.add(new JsonTupleProcessor());
writeprocs.add(new JsonInetAddressProcessor());
writeprocs.add(new JsonLogRecordProcessor());
writeprocs.add(new JsonLoggingLevelProcessor());
writeprocs.add(new JsonUUIDProcessor());
writeprocs.add(new JsonClassProcessor());
writeprocs.add(new JsonClassInfoProcessor());
writeprocs.add(new JsonMultiCollectionProcessor());
writeprocs.add(new JsonEnumProcessor());
writeprocs.add(new JsonCertificateProcessor());
writeprocs.add(new JsonArrayProcessor());
writeprocs.add(new JsonStackTraceElementProcessor());
writeprocs.add(new JsonThrowableProcessor());
writeprocs.add(new JsonCalendarProcessor());
writeprocs.add(new JsonCurrencyProcessor());
writeprocs.add(new JsonSimpleDateFormatProcessor());
writeprocs.add(new JsonCollectionProcessor());
writeprocs.add(new JsonToStringProcessor());
writeprocs.add(new JsonLRUProcessor());
writeprocs.add(new JsonMapProcessor());
writeprocs.add(new JsonLocalDateTimeProcessor());
writeprocs.add(new JsonBigIntegerProcessor());
writeprocs.add(new JsonJsonStringProcessor());
writeprocs.add(new JsonOptionalProcessor());
writeprocs.add(new JsonRecordProcessor());
writeprocs.add(new JsonBeanProcessor());
readprocs = new ArrayList();
// JsonArrayProcessor needs to be first, because others don't check array marker:
readprocs.add(new JsonByteArrayProcessor());
readprocs.add(new JsonArrayProcessor());
//readprocs.add(new read.JsonReferenceProcessor());
readprocs.add(new JsonRectangleProcessor());
readprocs.add(new JsonImageProcessor());
readprocs.add(new JsonColorProcessor());
readprocs.add(new JsonDateProcessor());
readprocs.add(new JsonTimestampProcessor());
readprocs.add(new JsonTupleProcessor());
readprocs.add(new JsonInetAddressProcessor());
readprocs.add(new JsonLogRecordProcessor());
readprocs.add(new JsonLoggingLevelProcessor());
readprocs.add(new JsonUUIDProcessor());
readprocs.add(new JsonMultiCollectionProcessor());
readprocs.add(new JsonEnumProcessor());
readprocs.add(new JsonCertificateProcessor());
readprocs.add(new JsonStackTraceElementProcessor());
readprocs.add(new JsonThrowableProcessor());
readprocs.add(new JsonCalendarProcessor());
readprocs.add(new JsonCurrencyProcessor());
readprocs.add(new JsonSimpleDateFormatProcessor());
readprocs.add(new JsonCollectionProcessor());
readprocs.add(new JsonURIProcessor());
readprocs.add(new JsonURLProcessor());
readprocs.add(new JsonClassProcessor());
readprocs.add(new JsonClassInfoProcessor());
readprocs.add(new JsonPrimitiveObjectProcessor());
readprocs.add(new JsonLRUProcessor());
nestedreadprocs = new ArrayList(readprocs);
nestedreadprocs.add(new JsonNestedMapProcessor());
readprocs.add(new JsonMapProcessor());
readprocs.add(new JsonBigIntegerProcessor());
readprocs.add(new JsonLocalDateTimeProcessor());
readprocs.add(new JsonOptionalProcessor());
readprocs.add(new JsonJsonStringProcessor());
int pos = readprocs.size();
readprocs.add(new JsonRecordProcessor());
readprocs.add(new JsonBeanProcessor());
readprocs.add(new JsonPrimitiveProcessor());
for(int i = pos; i < readprocs.size(); ++i)
nestedreadprocs.add(readprocs.get(i));
}
/**
* Find the class of an object.
* @param object The object.
* @return The objects class.
*/
public Class findClazz(Object object, ClassLoader targetcl)
{
return object instanceof JsonObject? findClazzOfJsonObject((JsonObject)object, targetcl): object instanceof JsonValue?null:object!=null?object.getClass():null;
}
/**
* Find the class of an object.
* @param object The object.
* @return The objects class.
*/
public static Class findClazzOfJsonObject(JsonObject object, ClassLoader targetcl)
{
Class ret = null;
String clname = object.getString(CLASSNAME_MARKER, null);
clname = STransformation.getClassname(clname);
if(clname!=null)
ret = SReflect.classForName0(clname, targetcl);
return ret;
}
/**
*
* @return
*/
protected static synchronized Traverser getWriteTraverser()
{
if(writetraverser==null)
{
writetraverser = new Traverser()
{
public Object preemptProcessing(Object inputobject, Type inputtype, Object context)
{
JsonWriteContext wr = (JsonWriteContext)context;
Object ret = null;
if(wr.isWriteId())
{
wr.setCurrentInputObject(inputobject);
Integer ref = wr.getObjectId(inputobject);
if(ref != null)
{
wr.write("{");
wr.writeNameValue(REFERENCE_MARKER, ref);
wr.write("}");
ret = inputobject;
}
}
return ret;
}
public void finalizeProcessing(Object inputobject, Object outputobject, ITraverseProcessor convproc, ITraverseProcessor proc, Object context)
{
if (outputobject == null)
{
JsonWriteContext wr = (JsonWriteContext)context;
wr.write("null");
}
}
};
}
return writetraverser;
}
/**
*
* @return
*/
protected static synchronized JsonTraverser getReadTraverser()
{
if(readtraverser==null)
readtraverser = new JsonTraverser()
{
public Object preemptProcessing(Object inputobject, Type inputtype, Object context)
{
JsonReadContext jrc = (JsonReadContext) context;
Object ret = null;
if(inputobject instanceof JsonObject && ((JsonObject)inputobject).get(JsonTraverser.REFERENCE_MARKER)!=null)
{
JsonObject obj = (JsonObject)inputobject;
int num = obj.getInt(JsonTraverser.REFERENCE_MARKER, 0);
ret = jrc.getKnownObject(num);
}
jrc.pushIdStack();
return ret;
}
public void finalizeProcessing(Object inputobject, Object outputobject, ITraverseProcessor convproc, ITraverseProcessor proc, Object context)
{
JsonReadContext jrc = (JsonReadContext) context;
Integer idx = jrc.popIdStack();
if(convproc != null)
{
if (idx != null)
jrc.setKnownObject(idx, outputobject);
}
}
};
return readtraverser;
}
/**
* Convert to a byte array.
*/
public static byte[] objectToByteArray(Object val, ClassLoader classloader)
{
return objectToByteArray(val, classloader, null);
}
/**
* Convert to a byte array.
*/
public static byte[] objectToByteArray(Object val, ClassLoader classloader, String enc)
{
return objectToByteArray(val, classloader, enc, true);
}
/**
* Convert to a byte array.
*/
public static byte[] objectToByteArray(Object val, ClassLoader classloader, String enc, boolean writeclass)
{
return objectToByteArray(val, classloader, enc, writeclass, null);
}
/**
* Convert to a byte array.
*/
public static byte[] objectToByteArray(Object val, ClassLoader classloader, String enc, boolean writeclass, Map, Set> excludes)
{
return objectToByteArray(val, classloader, enc, writeclass, null, null);
}
/**
* Convert to a byte array.
*/
public static byte[] objectToByteArray(Object val, ClassLoader classloader, String enc, boolean writeclass, Map, Set> excludes, List processors)
{
return objectToByteArray(val, classloader, enc, writeclass, true, excludes, null, processors);
}
/**
* Convert to a byte array.
*/
public static byte[] objectToByteArray(Object val, ClassLoader classloader, String enc, boolean writeclass, boolean writeid, Map, Set> excludes, List conversionprocessors, List processors)
{
return objectToByteArray(val, classloader, enc, writeclass, writeid, excludes, conversionprocessors, conversionprocessors, null, null);
}
/**
* Convert to a byte array.
*/
public static byte[] objectToByteArray(Object val, ClassLoader classloader, String enc, boolean writeclass, boolean writeid, Map, Set> excludes, List conversionprocessors, List processors, Object usercontext, IStringConverter converter)
{
Traverser traverser = getWriteTraverser();
JsonWriteContext wr = new JsonWriteContext(writeclass, writeid, excludes);
wr.setUserContext(usercontext);
try
{
ByteArrayOutputStream bos = new ByteArrayOutputStream();
traverser.traverse(val, null, conversionprocessors, processors!=null? processors: writeprocs, converter, Traverser.MODE.PREPROCESS, classloader, wr);
byte[] ret = enc==null? wr.getString().getBytes(SUtil.UTF8): wr.getString().getBytes(enc);
bos.close();
//System.out.println("json: "+Arrays.toString(ret));
return ret;
}
catch(RuntimeException e)
{
throw e;
}
catch(Exception e)
{
// e.printStackTrace();
// System.out.println("Exception writing: "+val);
throw new RuntimeException(e);
}
}
/**
* Convert to a string.
*/
public static String objectToString(Object val, ClassLoader classloader)
{
return objectToString(val, classloader, true);
}
/**
* Convert to a string.
*/
public static String objectToString(Object val, ClassLoader classloader, boolean writeclass)
{
return objectToString(val, classloader, writeclass, null);
}
/**
* Convert to a string.
*/
public static String objectToString(Object val, ClassLoader classloader, boolean writeclass, Map, Set> excludes)
{
return objectToString(val, classloader, writeclass, excludes, null);
}
/**
* Convert to a string.
*/
public static String objectToString(Object val, ClassLoader classloader, boolean writeclass, Map, Set> excludes, List processors)
{
return objectToString(val, classloader, writeclass, excludes, null, processors);
}
/**
* Convert to a string.
*/
public static String objectToString(Object val, ClassLoader classloader, boolean writeclass, Map, Set> excludes, List preprocessors, List processors)
{
return objectToString(val, classloader, writeclass, true, excludes, null, processors, null, null);
}
/**
* Convert to a string.
*/
public static String objectToString(Object val, ClassLoader classloader, boolean writeclass, boolean writeid, Map, Set> excludes, List preprocessors, List processors)
{
return objectToString(val, classloader, writeclass, writeid, excludes, null, processors, null, null);
}
/**
* Convert to a string.
*/
public static String objectToString(Object val, ClassLoader classloader, boolean writeclass, boolean writeid, Map, Set> excludes, List preprocessors, List processors, Object usercontext, IStringConverter converter)
{
String ret = null;
Traverser traverser = getWriteTraverser();
JsonWriteContext wr = new JsonWriteContext(writeclass, writeid, excludes);
wr.setUserContext(usercontext);
try
{
traverser.traverse(val, null, preprocessors, processors!=null? processors: writeprocs, converter, Traverser.MODE.PREPROCESS, classloader, wr);
ret = wr.getString();
return ret;
}
catch(RuntimeException e)
{
throw e;
}
catch(Exception e)
{
// e.printStackTrace();
// System.out.println("Exception writing: "+val);
throw new RuntimeException(e);
}
}
/**
* Convert a byte array (of an xml) to an object.
* @param val The byte array.
* @param classloader The class loader.
* @return The decoded object.
*/
public static Object objectFromByteArray(byte[] val, ClassLoader classloader)
{
return objectFromByteArray(val, classloader, (IErrorReporter)null);
}
/**
* Convert a byte array (of an xml) to an object.
* @param val The byte array.
* @param classloader The class loader.
* @return The decoded object.
*/
public static Object objectFromByteArray(byte[] val, ClassLoader classloader, String enc)
{
return objectFromByteArray(val, classloader, null, enc, null);
}
/**
* Convert a byte array (of an xml) to an object.
* @param val The byte array.
* @param classloader The class loader.
* @return The decoded object.
*/
public static Object objectFromByteArray(byte[] val, ClassLoader classloader, IErrorReporter rep)
{
return objectFromByteArray(val, classloader, rep, null, null);
}
/**
* Convert a byte array (of an xml) to an object.
* @param val The byte array.
* @param classloader The class loader.
* @return The decoded object.
*/
public static T objectFromByteArray(byte[] val, ClassLoader classloader, IErrorReporter rep, String enc, Class clazz)
{
return objectFromByteArray(val, classloader, rep, enc, clazz, null, null);
}
/**
* Convert a byte array (of an xml) to an object.
* @param val The byte array.
* @param classloader The class loader.
* @return The decoded object.
*/
public static T objectFromByteArray(byte[] val, ClassLoader classloader, IErrorReporter rep, String enc, Class clazz, List procs, List postprocs)
{
return objectFromByteArray(val, classloader, rep, enc, clazz, procs, postprocs, null, null);
}
/**
* Convert a byte array (of an xml) to an object.
* @param val The byte array.
* @param classloader The class loader.
* @return The decoded object.
*/
public static T objectFromByteArray(byte[] val, ClassLoader classloader, IErrorReporter rep, String enc, Class clazz, List procs, List postprocs, Object usercontext,IStringConverter converter)
{
try
{
return objectFromString(enc==null? new String(val, SUtil.UTF8): new String(val, enc), classloader, rep, clazz, procs, postprocs, usercontext, converter);
}
catch(UnsupportedEncodingException e)
{
throw new RuntimeException(e);
}
}
/**
* Convert a byte array (of an xml) to an object.
* @param val The byte array.
* @param classloader The class loader.
* @return The decoded object.
*/
public static T objectFromString(String val, ClassLoader classloader, Class clazz)
{
return objectFromString(val, classloader, null, clazz);
}
/**
* Convert a byte array (of an xml) to an object.
* @param val The byte array.
* @param classloader The class loader.
* @return The decoded object.
*/
public static T objectFromString(String val, ClassLoader classloader, IErrorReporter rep, Class clazz)
{
return objectFromString(val, classloader, null, clazz, null);
}
/**
* Convert a byte array (of an xml) to an object.
* @param val The byte array.
* @param classloader The class loader.
* @return The decoded object.
*/
public static T objectFromString(String val, ClassLoader classloader, IErrorReporter rep, Class clazz, List processors)
{
return objectFromString(val, classloader, rep, clazz, processors, null);
}
/**
* Convert a byte array (of an xml) to an object.
* @param val The byte array.
* @param classloader The class loader.
* @return The decoded object.
*/
public static T objectFromString(String val, ClassLoader classloader, IErrorReporter rep, Class clazz, List processors, List postprocessors)
{
return objectFromString(val, classloader, rep, clazz, processors, postprocessors, null, null);
}
/**
* Convert a byte array (of an xml) to an object.
* @param val The byte array.
* @param classloader The class loader.
* @return The decoded object.
*/
@SuppressWarnings("unchecked")
public static T objectFromString(String val, ClassLoader classloader, IErrorReporter rep, Class clazz, List processors, List postprocessors, Object usercontext, IStringConverter converter)
{
Object ret;
rep = rep==null? DefaultErrorReporter.DEFAULT_ERROR_REPORTER: rep;
try
{
JsonValue value = Json.parse(val);
JsonTraverser traverser = getReadTraverser();
JsonReadContext rc = new JsonReadContext();
rc.setUserContext(usercontext);
ret = traverser.traverse(value, clazz, postprocessors, processors!=null? processors: readprocs, converter, Traverser.MODE.POSTPROCESS, classloader, rc);
// System.out.println("rc: "+rc.knownobjects);
}
catch(Exception e)
{
throw SUtil.convertToRuntimeException(e);
}
if(ret instanceof JsonValue) // do not return the raw jsonvalue object
throw new RuntimeException("Could not convert JsonValue to a Java class");
return (T)ret;
}
/**
* Prettifies a JSON source.
*
* @param json The JSON.
* @return Prettified JSON or the original JSON on error.
*/
public static String prettifyJson(String json)
{
try
{
JsonValue jv = Json.parse(json);
PrettyPrint pp = PrettyPrint.indentWithTabs();
StringWriter sw = new StringWriter();
jv.writeTo(sw, pp);
json = sw.toString();
}
catch (Exception e)
{
}
return json;
}
/**
* Get a copy of the default read processors.
* @return A copy of the read processor list.
*/
public static List getDefaultReadProcessorsCopy()
{
return new ArrayList(readprocs);
}
/**
* Get a copy of the default read processors.
* @return A copy of the read processor list.
*/
public static List getDefaultWriteProcessorsCopy()
{
return new ArrayList(writeprocs);
}
}
