DataStructureImpl (I2P Anonymous Network - Java Documentation

java.lang.Object
- net.i2p.data.DataStructureImpl

All Implemented Interfaces:

Serializable, DataStructure

Direct Known Subclasses:

AbuseReason, AbuseSeverity, Certificate, DatabaseEntry, DateAndFlags, DeliveryInstructions, GarlicClove, I2CPMessageImpl, I2NPMessageImpl, KeysAndCert, Lease, MessageId, Payload, RouterAddress, SessionConfig, SessionId, SimpleDataStructure, TunnelId
```
public abstract class DataStructureImpl
extends Object
implements DataStructure, Serializable
```
Base implementation of all data structures

Author:

jrandom

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor Description

DataStructureImpl()

Constructors
Constructor	Description
`DataStructureImpl()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Hash`	`calculateHash()`	Calculate the SHA256 value of this object (useful for a few scenarios)
`void`	`fromBase64(String data)`	Load the structure from the base 64 encoded data provided Warning - many classes will throw IllegalStateException if data is already set.
`void`	`fromByteArray(byte[] data)`	Load the structure from the data provided Warning - many classes will throw IllegalStateException if data is already set.
`protected int`	`read(InputStream in, byte[] target)`	Repeated reads until the buffer is full or IOException is thrown
`String`	`toBase64()`	render the structure into modified base 64 notation
`byte[]`	`toByteArray()`

Methods inherited from interface net.i2p.data.DataStructure
readBytes, writeBytes

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - DataStructureImpl
```
public DataStructureImpl()
```
- Method Detail
  - toBase64
```
public String toBase64()
```
    Description copied from interface: DataStructure
    
    render the structure into modified base 64 notation
    
    Specified by:
    
    toBase64 in interface DataStructure
    
    Returns:
    
    null on error
  - fromBase64
```
public void fromBase64(String data)
                throws DataFormatException
```
    Description copied from interface: DataStructure
    
    Load the structure from the base 64 encoded data provided Warning - many classes will throw IllegalStateException if data is already set. Warning - many classes will throw IllegalArgumentException if data is the wrong size.
    
    Specified by:
    
    fromBase64 in interface DataStructure
    
    Throws:
    
    DataFormatException
  - calculateHash
```
public Hash calculateHash()
```
    Description copied from interface: DataStructure
    
    Calculate the SHA256 value of this object (useful for a few scenarios)
    
    Specified by:
    
    calculateHash in interface DataStructure
    
    Returns:
    
    SHA256 hash, or null if there were problems (data format or io errors)
  - toByteArray
```
public byte[] toByteArray()
```
    Specified by:
    
    toByteArray in interface DataStructure
    
    Returns:
    
    may be null if data is not set
  - fromByteArray
```
public void fromByteArray(byte[] data)
                   throws DataFormatException
```
    Description copied from interface: DataStructure
    
    Load the structure from the data provided Warning - many classes will throw IllegalStateException if data is already set. Warning - many classes will throw IllegalArgumentException if data is the wrong size.
    
    Specified by:
    
    fromByteArray in interface DataStructure
    
    Throws:
    
    DataFormatException
  - read
```
protected int read(InputStream in,
                   byte[] target)
            throws IOException
```
    Repeated reads until the buffer is full or IOException is thrown
    
    Returns:
    
    number of bytes read (should always equal target.length)
    
    Throws:
    
    IOException

Class DataStructureImpl

Constructor Summary

Method Summary

Methods inherited from interface net.i2p.data.DataStructure

Methods inherited from class java.lang.Object

Constructor Detail

DataStructureImpl

Method Detail

toBase64

fromBase64

calculateHash

toByteArray

fromByteArray

read