org.mapdb

Class SerializerPojo

java.lang.Object

org.mapdb.Serializer<Object>

org.mapdb.SerializerBase

org.mapdb.SerializerPojo

All Implemented Interfaces:

Serializable

public class SerializerPojo
extends SerializerBase
implements Serializable

Serializer which handles POJO, object graphs etc.

Author:

Jan Kotek

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	SerializerPojo.ClassInfo Stores info about single class stored in MapDB.
protected static class	SerializerPojo.FieldInfo Stores info about single field stored in MapDB.
protected class	SerializerPojo.ObjectInputStream2
protected class	SerializerPojo.ObjectOutputStream2

Nested classes/interfaces inherited from class org.mapdb.SerializerBase

SerializerBase.Deser<A>, SerializerBase.DeserInt, SerializerBase.DeserLong, SerializerBase.DeserSerializer, SerializerBase.DeserSingleton, SerializerBase.DeserStringLen, SerializerBase.FastArrayList<K>, SerializerBase.Header, SerializerBase.HeaderMapDB, SerializerBase.Ser<A>, SerializerBase.SerHeader, SerializerBase.SerHeaderSerializer

Nested classes/interfaces inherited from class org.mapdb.Serializer

Serializer.Array<T>, Serializer.BooleanSer, Serializer.CompressionDeflateWrapper<E>, Serializer.CompressionWrapper<E>, Serializer.EightByteSerializer<E>, Serializer.FourByteSerializer<E>, Serializer.IntegerSerializer, Serializer.LongSerializer

Field Summary

Fields

Modifier and Type	Field and Description
protected static Method	androidConstructor
protected static Map<Class<?>,Constructor<?>>	class2constuctor
protected Serializer<SerializerPojo.ClassInfo>	classInfoSerializer
protected Fun.Function1<Class,String>	classLoader
protected static Fun.Function1<Class,String>	DEFAULT_CLASS_LOADER
protected Engine	engine
protected Fun.Function1Int<SerializerPojo.ClassInfo>	getClassInfo
protected Fun.Function0<SerializerPojo.ClassInfo[]>	getClassInfos
protected Fun.Function1<Object,String>	getNamedObject
protected Fun.Function1<String,Object>	getNameForObject
protected Fun.Function1<Void,String>	notifyMissingClassInfo
protected static Method	sunConstructor
protected static Object	sunReflFac

Fields inherited from class org.mapdb.SerializerBase

headerDeser, mapdb_all, mapdb_reverse, ser, SER_BOOLEAN, SER_BYTE, SER_BYTE_ARRAY, SER_CHAR, SER_DOUBLE, SER_FLOAT, SER_INT, SER_INT_ARRAY, SER_LONG, SER_LONG_ARRAY, SER_MA_BOOL, SER_MA_INT, SER_MA_LONG, SER_MA_STRING, SER_MA_VAR, SER_SHORT, SER_STRING

Fields inherited from class org.mapdb.Serializer

BASIC, BIG_DECIMAL, BIG_INTEGER, BOOLEAN, BOOLEAN_ARRAY, BYTE, BYTE_ARRAY, BYTE_ARRAY_NOSIZE, CHAR, CHAR_ARRAY, CLASS, DATE, DOUBLE, DOUBLE_ARRAY, FLOAT, FLOAT_ARRAY, ILLEGAL_ACCESS, INT_ARRAY, INTEGER, INTEGER_PACKED, INTEGER_PACKED_ZIGZAG, JAVA, LONG, LONG_ARRAY, LONG_PACKED, LONG_PACKED_ZIGZAG, RECID, RECID_ARRAY, SHORT, SHORT_ARRAY, STRING, STRING_ASCII, STRING_INTERN, STRING_NOSIZE, STRING_XXHASH, UUID

Constructor Summary

Constructors

Constructor and Description
SerializerPojo(Fun.Function1<String,Object> getNameForObject, Fun.Function1<Object,String> getNamedObject, Fun.Function1Int<SerializerPojo.ClassInfo> getClassInfo, Fun.Function0<SerializerPojo.ClassInfo[]> getClassInfos, Fun.Function1<Void,String> notifyMissingClassInfo, Fun.Function1<Class,String> classLoader, Engine engine)

Method Summary

Methods

Modifier and Type	Method and Description
protected void	assertClassSerializable(SerializerPojo.ClassInfo[] classes, Class<?> clazz)
protected static Class	classForName(String className, ClassLoader loader)
static int	classToId(SerializerPojo.ClassInfo[] classes, String className)
protected <T> T	createInstanceSkippinkConstructor(Class<T> clazz) For pojo serialization we need to instantiate class without invoking its constructor.
protected Object	deserializeUnknownHeader(DataInput in, int head, SerializerBase.FastArrayList<Object> objectStack) override this method to extend SerializerBase functionality
protected static ObjectStreamField[]	fieldsForClass(SerializerPojo.ClassInfo[] classes, Class<?> clazz)
protected Engine	getEngine()
Object	getFieldValue(SerializerPojo.FieldInfo fieldInfo, Object object)
boolean	isSerializable(Object o) return true if mapdb knows howto serialize given object
SerializerPojo.ClassInfo	makeClassInfo(String className)
protected void	serializeUnknownObject(DataOutput out, Object obj, SerializerBase.FastArrayList<Object> objectStack) override this method to extend SerializerBase functionality
void	setFieldValue(SerializerPojo.FieldInfo fieldInfo, Object object, Object value)
protected static boolean	usesAdvancedSerialization(Class<?> clazz)

Methods inherited from class org.mapdb.SerializerBase

assertSerializable, deserialize, deserialize, deserializeClass, deserializeMapDB, equalsBinary, initHeaderDeser, initMapdb, initSer, isTrusted, readBooleanArray, serialize, serialize, serializeClass, serializeObjectArray, writeBooleanArray

Methods inherited from class org.mapdb.Serializer

equals, fixedSize, getBTreeKeySerializer, hashCode, valueArrayCopyOfRange, valueArrayDeleteValue, valueArrayDeserialize, valueArrayEmpty, valueArrayFromArray, valueArrayGet, valueArrayPut, valueArraySerialize, valueArraySize, valueArrayUpdateVal

Methods inherited from class java.lang.Object

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

Field Detail

classInfoSerializer

protected final Serializer<SerializerPojo.ClassInfo> classInfoSerializer

DEFAULT_CLASS_LOADER

protected static final Fun.Function1<Class,String> DEFAULT_CLASS_LOADER

engine

protected final Engine engine

getNameForObject

protected final Fun.Function1<String,Object> getNameForObject

getNamedObject

protected final Fun.Function1<Object,String> getNamedObject

getClassInfos

protected final Fun.Function0<SerializerPojo.ClassInfo[]> getClassInfos

getClassInfo

protected final Fun.Function1Int<SerializerPojo.ClassInfo> getClassInfo

notifyMissingClassInfo

protected final Fun.Function1<Void,String> notifyMissingClassInfo

classLoader

protected final Fun.Function1<Class,String> classLoader

sunConstructor

protected static Method sunConstructor

sunReflFac

protected static Object sunReflFac

androidConstructor

protected static Method androidConstructor

class2constuctor

protected static Map<Class<?>,Constructor<?>> class2constuctor

Constructor Detail

SerializerPojo

public SerializerPojo(Fun.Function1<String,Object> getNameForObject,
              Fun.Function1<Object,String> getNamedObject,
              Fun.Function1Int<SerializerPojo.ClassInfo> getClassInfo,
              Fun.Function0<SerializerPojo.ClassInfo[]> getClassInfos,
              Fun.Function1<Void,String> notifyMissingClassInfo,
              Fun.Function1<Class,String> classLoader,
              Engine engine)

Method Detail

classForName

protected static Class classForName(String className,
                 ClassLoader loader)

makeClassInfo

public SerializerPojo.ClassInfo makeClassInfo(String className)

usesAdvancedSerialization

protected static boolean usesAdvancedSerialization(Class<?> clazz)

fieldsForClass

protected static ObjectStreamField[] fieldsForClass(SerializerPojo.ClassInfo[] classes,
                                 Class<?> clazz)

isSerializable

public boolean isSerializable(Object o)

Description copied from class: SerializerBase

return true if mapdb knows howto serialize given object

Overrides:

isSerializable in class SerializerBase

assertClassSerializable

protected void assertClassSerializable(SerializerPojo.ClassInfo[] classes,
                           Class<?> clazz)
                                throws NotSerializableException,
                                       InvalidClassException

Throws:

NotSerializableException

InvalidClassException

getFieldValue

public Object getFieldValue(SerializerPojo.FieldInfo fieldInfo,
                   Object object)

setFieldValue

public void setFieldValue(SerializerPojo.FieldInfo fieldInfo,
                 Object object,
                 Object value)

classToId

public static int classToId(SerializerPojo.ClassInfo[] classes,
            String className)

getEngine

protected Engine getEngine()

Overrides:

getEngine in class SerializerBase

serializeUnknownObject

protected void serializeUnknownObject(DataOutput out,
                          Object obj,
                          SerializerBase.FastArrayList<Object> objectStack)
                               throws IOException

Description copied from class: SerializerBase

override this method to extend SerializerBase functionality

Overrides:

serializeUnknownObject in class SerializerBase

Throws:

IOException

deserializeUnknownHeader

protected Object deserializeUnknownHeader(DataInput in,
                              int head,
                              SerializerBase.FastArrayList<Object> objectStack)
                                   throws IOException

Description copied from class: SerializerBase

override this method to extend SerializerBase functionality

Overrides:

deserializeUnknownHeader in class SerializerBase

Throws:

IOException

createInstanceSkippinkConstructor

protected <T> T createInstanceSkippinkConstructor(Class<T> clazz)

For pojo serialization we need to instantiate class without invoking its constructor. There are two ways to do it:

Using proprietary API on Oracle JDK and OpenJDK sun.reflect.ReflectionFactory.getReflectionFactory().newConstructorForSerialization() more at http://www.javaspecialists.eu/archive/Issue175.html

Using ObjectInputStream.newInstance on Android http://stackoverflow.com/a/3448384

If non of these works we fallback into usual reflection which requires an no-arg constructor