ByteConverter (PostgreSQL JDBC postgresql API version 42.3.1)

java.lang.Object
- org.postgresql.util.ByteConverter

```
public class ByteConverter
extends Object
```
Helper methods to parse java base types from byte arrays.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static boolean`	`bool(byte[] bytes, int idx)` Parses a boolean value from the byte array.
`static void`	`bool(byte[] target, int idx, boolean value)` Encodes a boolean value to the byte array.
`static int`	`bytesToInt(byte[] bytes)` Convert a variable length array of bytes to an integer
`static float`	`float4(byte[] bytes, int idx)` Parses a float value from the byte array.
`static void`	`float4(byte[] target, int idx, float value)` Encodes a int value to the byte array.
`static double`	`float8(byte[] bytes, int idx)` Parses a double value from the byte array.
`static void`	`float8(byte[] target, int idx, double value)` Encodes a int value to the byte array.
`static short`	`int2(byte[] bytes, int idx)` Parses a short value from the byte array.
`static void`	`int2(byte[] target, int idx, int value)` Encodes a int value to the byte array.
`static int`	`int4(byte[] bytes, int idx)` Parses an int value from the byte array.
`static void`	`int4(byte[] target, int idx, int value)` Encodes a int value to the byte array.
`static long`	`int8(byte[] bytes, int idx)` Parses a long value from the byte array.
`static void`	`int8(byte[] target, int idx, long value)` Encodes a long value to the byte array.
`static byte[]`	`numeric(BigDecimal nbr)` Converts a non-null `BigDecimal` to binary format for `Oid.NUMERIC`.
`static Number`	`numeric(byte[] bytes)` Convert a variable length array of bytes to an integer
`static Number`	`numeric(byte[] bytes, int pos, int numBytes)` Convert a variable length array of bytes to a `Number`.

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

- Method Detail
  - bytesToInt
```
public static int bytesToInt(byte[] bytes)
```
    Convert a variable length array of bytes to an integer
    
    Parameters:
    
    bytes - array of bytes that can be decoded as an integer
    
    Returns:
    
    integer
  - numeric
```
public static Number numeric(byte[] bytes)
```
    Convert a variable length array of bytes to an integer
    
    Parameters:
    
    bytes - array of bytes that can be decoded as an integer
    
    Returns:
    
    integer
  - numeric
```
public static Number numeric(byte[] bytes,
                             int pos,
                             int numBytes)
```
    Convert a variable length array of bytes to a Number. The result will always be a BigDecimal or Double.NaN.
    
    Parameters:
    
    bytes - array of bytes to be decoded from binary numeric representation.
    
    pos - index of the start position of the bytes array for number
    
    numBytes - number of bytes to use, length is already encoded in the binary format but this is used for double checking
    
    Returns:
    
    BigDecimal representation of numeric or Double.NaN.
  - numeric
```
public static byte[] numeric(BigDecimal nbr)
```
    Converts a non-null BigDecimal to binary format for Oid.NUMERIC.
    
    Parameters:
    
    nbr - The instance to represent in binary.
    
    Returns:
    
    The binary representation of nbr.
  - int8
```
public static long int8(byte[] bytes,
                        int idx)
```
    Parses a long value from the byte array.
    
    Parameters:
    
    bytes - The byte array to parse.
    
    idx - The starting index of the parse in the byte array.
    
    Returns:
    
    parsed long value.
  - int4
```
public static int int4(byte[] bytes,
                       int idx)
```
    Parses an int value from the byte array.
    
    Parameters:
    
    bytes - The byte array to parse.
    
    idx - The starting index of the parse in the byte array.
    
    Returns:
    
    parsed int value.
  - int2
```
public static short int2(byte[] bytes,
                         int idx)
```
    Parses a short value from the byte array.
    
    Parameters:
    
    bytes - The byte array to parse.
    
    idx - The starting index of the parse in the byte array.
    
    Returns:
    
    parsed short value.
  - bool
```
public static boolean bool(byte[] bytes,
                           int idx)
```
    Parses a boolean value from the byte array.
    
    Parameters:
    
    bytes - The byte array to parse.
    
    idx - The starting index to read from bytes.
    
    Returns:
    
    parsed boolean value.
  - float4
```
public static float float4(byte[] bytes,
                           int idx)
```
    Parses a float value from the byte array.
    
    Parameters:
    
    bytes - The byte array to parse.
    
    idx - The starting index of the parse in the byte array.
    
    Returns:
    
    parsed float value.
  - float8
```
public static double float8(byte[] bytes,
                            int idx)
```
    Parses a double value from the byte array.
    
    Parameters:
    
    bytes - The byte array to parse.
    
    idx - The starting index of the parse in the byte array.
    
    Returns:
    
    parsed double value.
  - int8
```
public static void int8(byte[] target,
                        int idx,
                        long value)
```
    Encodes a long value to the byte array.
    
    Parameters:
    
    target - The byte array to encode to.
    
    idx - The starting index in the byte array.
    
    value - The value to encode.
  - int4
```
public static void int4(byte[] target,
                        int idx,
                        int value)
```
    Encodes a int value to the byte array.
    
    Parameters:
    
    target - The byte array to encode to.
    
    idx - The starting index in the byte array.
    
    value - The value to encode.
  - int2
```
public static void int2(byte[] target,
                        int idx,
                        int value)
```
    Encodes a int value to the byte array.
    
    Parameters:
    
    target - The byte array to encode to.
    
    idx - The starting index in the byte array.
    
    value - The value to encode.
  - bool
```
public static void bool(byte[] target,
                        int idx,
                        boolean value)
```
    Encodes a boolean value to the byte array.
    
    Parameters:
    
    target - The byte array to encode to.
    
    idx - The starting index in the byte array.
    
    value - The value to encode.
  - float4
```
public static void float4(byte[] target,
                          int idx,
                          float value)
```
    Encodes a int value to the byte array.
    
    Parameters:
    
    target - The byte array to encode to.
    
    idx - The starting index in the byte array.
    
    value - The value to encode.
  - float8
```
public static void float8(byte[] target,
                          int idx,
                          double value)
```
    Encodes a int value to the byte array.
    
    Parameters:
    
    target - The byte array to encode to.
    
    idx - The starting index in the byte array.
    
    value - The value to encode.

Class ByteConverter

Method Summary

Methods inherited from class java.lang.Object

Method Detail

bytesToInt

numeric

numeric

numeric

int8

int4

int2

bool

float4

float8

int8

int4

int2

bool

float4

float8