Package org.postgresql.util
Class ByteConverter
- java.lang.Object
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- org.postgresql.util.ByteConverter
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public class ByteConverter extends java.lang.Object
Helper methods to parse java base types from byte arrays.- Author:
- Mikko Tiihonen
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method 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 integerstatic 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 java.lang.Number
numeric(byte[] bytes)
Convert a variable length array of bytes to an integerstatic java.lang.Number
numeric(byte[] bytes, int pos, int numBytes)
Convert a variable length array of bytes to an integer
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Method Detail
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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
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numeric
public static java.lang.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
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numeric
public static java.lang.Number numeric(byte[] bytes, int pos, int numBytes)
Convert a variable length array of bytes to an integer- Parameters:
bytes
- array of bytes that can be decoded as an integerpos
- index of the start position of the bytes array for numbernumBytes
- number of bytes to use, length is already encoded in the binary format but this is used for double checking- Returns:
- integer
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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