Serializer (mapdb 1.0.7 API)

All Known Implementing Classes:

BTreeMap.NodeSerializer, Queues.SimpleQueue.NodeSerializer, Serializer.CompressionWrapper, SerializerBase, SerializerPojo
```
public interface Serializer<A>
```
Provides serialization and deserialization

Author:

Jan Kotek

Nested Class Summary

Nested Classes
Modifier and Type Interface and Description

static class Serializer.CompressionWrapper<E>
wraps another serializer and (de)compresses its output/input

Nested Classes
Modifier and Type	Interface and Description
`static class`	`Serializer.CompressionWrapper<E>` wraps another serializer and (de)compresses its output/input

Field Summary

Fields
Modifier and Type	Field and Description
`static Serializer<Object>`	`BASIC` Basic serializer for most classes in 'java.lang' and 'java.util' packages.
`static Serializer<Boolean>`	`BOOLEAN`
`static Serializer<byte[]>`	`BYTE_ARRAY` Serializes `byte[]` it adds header which contains size information
`static Serializer<byte[]>`	`BYTE_ARRAY_NOSIZE` Serializes `byte[]` directly into underlying store It does not store size, so it can not be used in Maps and other collections.
`static Serializer<char[]>`	`CHAR_ARRAY` Serializes `char[]` it adds header which contains size information
`static Serializer<double[]>`	`DOUBLE_ARRAY` Serializes `double[]` it adds header which contains size information
`static Serializer<Object>`	`ILLEGAL_ACCESS` Always throws `IllegalAccessError` when invoked.
`static Serializer<int[]>`	`INT_ARRAY` Serializes `int[]` it adds header which contains size information
`static Serializer<Integer>`	`INTEGER` Serializes Integer into 4 bytes.
`static Serializer<Object>`	`JAVA` Serializer which uses standard Java Serialization with `ObjectInputStream` and `ObjectOutputStream`
`static Serializer<Long>`	`LONG` Serializes Long into 8 bytes, used mainly for testing.
`static Serializer<long[]>`	`LONG_ARRAY` Serializes `long[]` it adds header which contains size information
`static Serializer<String>`	`STRING` Serializes strings using UTF8 encoding.
`static Serializer<String>`	`STRING_ASCII` Serializes strings using ASCII encoding (8 bit character).
`static Serializer<String>`	`STRING_INTERN` Serializes strings using UTF8 encoding.
`static Serializer<String>`	`STRING_NOSIZE` Serializes strings using UTF8 encoding.
`static Serializer<UUID>`	`UUID` Serializers `UUID` class

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`A`	`deserialize(DataInput in, int available)` Deserialize the content of an object from a DataInput.
`int`	`fixedSize()` Data could be serialized into record with variable size or fixed size.
`void`	`serialize(DataOutput out, A value)` Serialize the content of an object into a ObjectOutput

- Field Detail
  - STRING
```
static final Serializer<String> STRING
```
    Serializes strings using UTF8 encoding. Stores string size so can be used as collection serializer. Does not handle null values
  - STRING_INTERN
```
static final Serializer<String> STRING_INTERN
```
    Serializes strings using UTF8 encoding. Deserialized String is interned String.intern(), so it could save some memory. Stores string size so can be used as collection serializer. Does not handle null values
  - STRING_ASCII
```
static final Serializer<String> STRING_ASCII
```
    Serializes strings using ASCII encoding (8 bit character). Is faster compared to UTF8 encoding. Stores string size so can be used as collection serializer. Does not handle null values
  - STRING_NOSIZE
```
static final Serializer<String> STRING_NOSIZE
```
    Serializes strings using UTF8 encoding. Used mainly for testing. Does not handle null values.
  - LONG
```
static final Serializer<Long> LONG
```
    Serializes Long into 8 bytes, used mainly for testing. Does not handle null values.
  - INTEGER
```
static final Serializer<Integer> INTEGER
```
    Serializes Integer into 4 bytes. Does not handle null values.
  - BOOLEAN
```
static final Serializer<Boolean> BOOLEAN
```
  - ILLEGAL_ACCESS
```
static final Serializer<Object> ILLEGAL_ACCESS
```
    Always throws IllegalAccessError when invoked. Useful for testing and assertions.
  - BASIC
```
static final Serializer<Object> BASIC
```
    Basic serializer for most classes in 'java.lang' and 'java.util' packages. It does not handle custom POJO classes. It also does not handle classes which require access to `DB` itself.
  - BYTE_ARRAY
```
static final Serializer<byte[]> BYTE_ARRAY
```
    Serializes `byte[]` it adds header which contains size information
  - BYTE_ARRAY_NOSIZE
```
static final Serializer<byte[]> BYTE_ARRAY_NOSIZE
```
    Serializes `byte[]` directly into underlying store It does not store size, so it can not be used in Maps and other collections.
  - CHAR_ARRAY
```
static final Serializer<char[]> CHAR_ARRAY
```
    Serializes `char[]` it adds header which contains size information
  - INT_ARRAY
```
static final Serializer<int[]> INT_ARRAY
```
    Serializes `int[]` it adds header which contains size information
  - LONG_ARRAY
```
static final Serializer<long[]> LONG_ARRAY
```
    Serializes `long[]` it adds header which contains size information
  - DOUBLE_ARRAY
```
static final Serializer<double[]> DOUBLE_ARRAY
```
    Serializes `double[]` it adds header which contains size information
  - JAVA
```
static final Serializer<Object> JAVA
```
    Serializer which uses standard Java Serialization with ObjectInputStream and ObjectOutputStream
  - UUID
```
static final Serializer<UUID> UUID
```
    Serializers UUID class
- Method Detail
  - serialize
```
void serialize(DataOutput out,
               A value)
        throws IOException
```
    Serialize the content of an object into a ObjectOutput
    
    Parameters:
    
    out - ObjectOutput to save object into
    
    value - Object to serialize
    
    Throws:
    
    IOException
  - deserialize
```
A deserialize(DataInput in,
              int available)
       throws IOException
```
    Deserialize the content of an object from a DataInput.
    
    Parameters:
    
    in - to read serialized data from
    
    available - how many bytes are available in DataInput for reading, may be -1 (in streams) or 0 (null).
    
    Returns:
    
    deserialized object
    
    Throws:
    
    IOException
  - fixedSize
```
int fixedSize()
```
    Data could be serialized into record with variable size or fixed size. Some optimizations can be applied to serializers with fixed size
    
    Returns:
    
    fixed size or -1 for variable size

Interface Serializer<A>

Nested Class Summary

Field Summary

Method Summary

Field Detail

STRING

STRING_INTERN

STRING_ASCII

STRING_NOSIZE

LONG

INTEGER

BOOLEAN

ILLEGAL_ACCESS

BASIC

BYTE_ARRAY

BYTE_ARRAY_NOSIZE

CHAR_ARRAY

INT_ARRAY

LONG_ARRAY

DOUBLE_ARRAY

JAVA

UUID

Method Detail

serialize

deserialize

fixedSize