dk.vajhoej.record

Class Util2

java.lang.Object

dk.vajhoej.record.Util2

public class Util2
extends java.lang.Object

Utility class to process lists and to work with files instead of byte arrays trying to work even with variable length structs.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	Util2.ObjectHandler<T> Interface for processing objects read.
static interface	Util2.Transformer<T1,T2> Interface for converting objects read.

Constructor Summary

Constructors

Constructor and Description
Util2()

Method Summary

Modifier and Type	Method and Description
static <T1,T2> byte[]	copyAll(java.lang.Class<T1> t1, byte[] b, java.lang.Class<T2> t2, Util2.Transformer<T1,T2> cvt, LengthProvider2 lenpvd) Convert array of struct in bytes into array of struct in bytes.
static <T1,T2> void	copyAll(java.lang.Class<T1> t1, java.io.InputStream is, java.lang.Class<T2> t2, java.io.OutputStream os, Util2.Transformer<T1,T2> cvt, LengthProvider2 lenpvd) Convert array of struct in stream into array of struct in stream.
static <T> java.util.List<T>	readAll(java.lang.Class<T> t, byte[] b, LengthProvider2 lenpvd) Read array of struct in byte array into list of objects.
static <T> void	readAll(java.lang.Class<T> t, java.io.InputStream is, java.util.List<T> lst, LengthProvider2 lenpvd) Read array of struct in stream into list of objects.
static <T> void	readAll(java.lang.Class<T> t, java.io.InputStream is, Util2.ObjectHandler<T> oh, LengthProvider2 lenpvd) Read array of struct in stream and processes them by handler.
static <T> byte[]	writeAll(java.lang.Class<T> t, java.util.List<T> lst, LengthProvider2 lenpvd) Write list of objects into array of struct in byte array.
static <T> void	writeAll(java.lang.Class<T> t, java.util.List<T> lst, java.io.OutputStream os, LengthProvider2 lenpvd) Write list of objects into array of struct in stream.

Methods inherited from class java.lang.Object

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

Constructor Detail

Util2

public Util2()

Method Detail

readAll

public static <T> java.util.List<T> readAll(java.lang.Class<T> t,
                                            byte[] b,
                                            LengthProvider2 lenpvd)
                                     throws RecordException

Read array of struct in byte array into list of objects.

Type Parameters:

T - struct type

Parameters:

t - type

b - byte array

lenpvd - length provider

Returns:

list of objects

Throws:

RecordException - if problem with record definition

writeAll

public static <T> byte[] writeAll(java.lang.Class<T> t,
                                  java.util.List<T> lst,
                                  LengthProvider2 lenpvd)
                           throws RecordException

Write list of objects into array of struct in byte array.

Type Parameters:

T - struct type

Parameters:

t - type

lst - list of objects

lenpvd - length provider

Returns:

byte array

Throws:

RecordException - if problem with record definition

readAll

public static <T> void readAll(java.lang.Class<T> t,
                               java.io.InputStream is,
                               java.util.List<T> lst,
                               LengthProvider2 lenpvd)
                        throws RecordException,
                               java.io.IOException

Read array of struct in stream into list of objects.

Type Parameters:

T - struct type

Parameters:

t - type

is - stream

lst - list of objects

lenpvd - length provider

Throws:

RecordException - if problem with record definition

java.io.IOException - if problem with stream

writeAll

public static <T> void writeAll(java.lang.Class<T> t,
                                java.util.List<T> lst,
                                java.io.OutputStream os,
                                LengthProvider2 lenpvd)
                         throws RecordException,
                                java.io.IOException

Write list of objects into array of struct in stream.

Type Parameters:

T - struct type

Parameters:

t - type

lst - list of objects

os - stream

lenpvd - length provider

Throws:

RecordException - if problem with record definition

java.io.IOException - if problem with stream

readAll

public static <T> void readAll(java.lang.Class<T> t,
                               java.io.InputStream is,
                               Util2.ObjectHandler<T> oh,
                               LengthProvider2 lenpvd)
                        throws RecordException,
                               java.io.IOException

Read array of struct in stream and processes them by handler.

Type Parameters:

T - struct type

Parameters:

t - type

is - stream

oh - handler of objects

lenpvd - length provider

Throws:

RecordException - if problem with record definition

java.io.IOException - if problem with stream

copyAll

public static <T1,T2> byte[] copyAll(java.lang.Class<T1> t1,
                                     byte[] b,
                                     java.lang.Class<T2> t2,
                                     Util2.Transformer<T1,T2> cvt,
                                     LengthProvider2 lenpvd)
                              throws RecordException

Convert array of struct in bytes into array of struct in bytes.

Type Parameters:

T1 - input struct type

T2 - output struct type

Parameters:

t1 - from type

b - from byte array

t2 - to type

cvt - transformer class

lenpvd - length provider

Returns:

to byte array

Throws:

RecordException - if problem with record definitions

copyAll

public static <T1,T2> void copyAll(java.lang.Class<T1> t1,
                                   java.io.InputStream is,
                                   java.lang.Class<T2> t2,
                                   java.io.OutputStream os,
                                   Util2.Transformer<T1,T2> cvt,
                                   LengthProvider2 lenpvd)
                            throws RecordException,
                                   java.io.IOException

Convert array of struct in stream into array of struct in stream.

Type Parameters:

T1 - input struct type

T2 - output struct type

Parameters:

t1 - from type

is - from stream

t2 - to type

os - to stream

cvt - transformer class

lenpvd - length provider

Throws:

RecordException - if problem with record definitions

java.io.IOException - if problem with streams