RrdPrimitive (Javadocs [I2P+ 2.13.0+]

java.lang.Object
- org.rrd4j.core.RrdPrimitive

Type Parameters:
U - The type of RrdUpdater this primitive belongs to
Direct Known Subclasses:
RrdDouble, RrdDoubleArray, RrdDoubleMatrix, RrdEnum, RrdInt, RrdLong, RrdString
```
abstract class RrdPrimitive>
extends Object
```
Abstract base class for all RRD primitive data types.
This class provides the foundation for storing different types of primitive data (int, long, double, string) in RRD files. It handles the low-level operations of reading and writing bytes to the backend storage, with support for caching and different data type sizes.

Field Summary

Fields
Modifier and Type	Field and Description
`(package private) static int`	`RRD_DOUBLE` Type identifier for double RRD primitives.
`(package private) static int`	`RRD_INT` Type identifier for integer RRD primitives.
`(package private) static int`	`RRD_LONG` Type identifier for long RRD primitives.
`(package private) static int[]`	`RRD_PRIM_SIZES` Array containing the size in bytes for each RRD primitive type.
`(package private) static int`	`RRD_STRING` Type identifier for string RRD primitives.
`(package private) static int`	`STRING_LENGTH` Maximum length of string values stored in RRD primitives.

Constructor Summary
Constructors
Constructor and Description
RrdPrimitive(RrdUpdater updater, int type, boolean isConstant)
RrdPrimitive(RrdUpdater updater, int type, int count, boolean isConstant)

Constructors
Constructor and Description
`RrdPrimitive(RrdUpdater<U> updater, int type, boolean isConstant)`
`RrdPrimitive(RrdUpdater<U> updater, int type, int count, boolean isConstant)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`(package private) boolean`	`isCachingAllowed()` Checks if caching is allowed for this primitive.
`(package private) byte[]`	`readBytes()` Raw byte array from backend storage.
`(package private) double`	`readDouble()` Double value from backend storage.
`(package private) double`	`readDouble(int index)` Position in the primitive array.
`(package private) double[]`	`readDouble(int index, int count)` Starting position in the primitive array.
`protected <E extends Enum<E>> E`	`readEnum(Class<E> clazz)` Deserialize an enum value from backend storage.
`(package private) int`	`readInt()` Int value from backend storage.
`(package private) long`	`readLong()` Long value from backend storage.
`(package private) String`	`readString()` String value from backend storage.
`(package private) void`	`writeBytes(byte[] b)` Byte array to write to backend storage.
`(package private) void`	`writeDouble(double value)` Double value to write to backend storage.
`(package private) void`	`writeDouble(int index, double value)` Position in the primitive array.
`(package private) void`	`writeDouble(int index, double[] values)` Starting position in the primitive array.
`(package private) void`	`writeDouble(int index, double value, int count)` Starting position in the primitive array.
`protected <E extends Enum<E>> void`	`writeEnum(E value)` Serialize an enum value to backend storage.
`(package private) void`	`writeInt(int value)` Int value to write to backend storage.
`(package private) void`	`writeLong(long value)` Long value to write to backend storage.
`(package private) void`	`writeString(String value)` String value to write to backend storage.

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

- Field Detail
 - RRD_DOUBLE
```
static final int RRD_DOUBLE
```
 Type identifier for double RRD primitives.
 See Also:
 Constant Field Values
 - RRD_INT
```
static final int RRD_INT
```
 Type identifier for integer RRD primitives.
 See Also:
 Constant Field Values
 - RRD_LONG
```
static final int RRD_LONG
```
 Type identifier for long RRD primitives.
 See Also:
 Constant Field Values
 - RRD_PRIM_SIZES
```
static final int[] RRD_PRIM_SIZES
```
 Array containing the size in bytes for each RRD primitive type. Index corresponds to the type constants (RRD_INT, RRD_LONG, RRD_DOUBLE, RRD_STRING).
 - RRD_STRING
```
static final int RRD_STRING
```
 Type identifier for string RRD primitives.
 See Also:
 Constant Field Values
 - STRING_LENGTH
```
static final int STRING_LENGTH
```
 Maximum length of string values stored in RRD primitives.
 See Also:
 Constant Field Values
- Constructor Detail
 - RrdPrimitive
```
RrdPrimitive(RrdUpdater updater,
 int type,
 boolean isConstant)
```
 - RrdPrimitive
```
RrdPrimitive(RrdUpdater updater,
 int type,
 int count,
 boolean isConstant)
```
- Method Detail
 - isCachingAllowed
```
final boolean isCachingAllowed()
```
 Checks if caching is allowed for this primitive.
 Returns:
 true if caching is allowed, false otherwise
 - readBytes
```
final byte[] readBytes()
 throws IOException
```
 Raw byte array from backend storage.
 Returns:
 raw byte array from backend storage
 Throws:
 IOException
 - readDouble
```
final double readDouble()
 throws IOException
```
 Double value from backend storage.
 Returns:
 double value from backend storage
 Throws:
 IOException
 - readDouble
```
final double readDouble(int index)
 throws IOException
```
 Position in the primitive array.
 Parameters:
 index - position in the primitive array
 Returns:
 double value at the given array index
 Throws:
 IOException
 - readDouble
```
final double[] readDouble(int index,
 int count)
 throws IOException
```
 Starting position in the primitive array.
 Parameters:
 index - starting position in the primitive array
 count - number of consecutive doubles to read
 Returns:
 array of double values
 Throws:
 IOException
 - readEnum
```
protected final <E extends Enum<E>> E readEnum(Class<E> clazz)
 throws IOException
```
 Deserialize an enum value from backend storage.
 Type Parameters:
 E - enum type
 Parameters:
 clazz - enum class to deserialize
 Returns:
 the enum value, or null if the stored value is empty
 Throws:
 IOException
 - readInt
```
final int readInt()
 throws IOException
```
 Int value from backend storage.
 Returns:
 int value from backend storage
 Throws:
 IOException
 - readLong
```
final long readLong()
 throws IOException
```
 Long value from backend storage.
 Returns:
 long value from backend storage
 Throws:
 IOException
 - readString
```
final String readString()
 throws IOException
```
 String value from backend storage.
 Returns:
 string value from backend storage
 Throws:
 IOException
 - writeBytes
```
final void writeBytes(byte[] b)
 throws IOException
```
 Byte array to write to backend storage.
 Parameters:
 b - byte array to write to backend storage
 Throws:
 IOException
 - writeDouble
```
final void writeDouble(double value)
 throws IOException
```
 Double value to write to backend storage.
 Parameters:
 value - double value to write to backend storage
 Throws:
 IOException
 - writeDouble
```
final void writeDouble(int index,
 double value)
 throws IOException
```
 Position in the primitive array.
 Parameters:
 index - position in the primitive array
 value - double value to write
 Throws:
 IOException
 - writeDouble
```
final void writeDouble(int index,
 double[] values)
 throws IOException
```
 Starting position in the primitive array.
 Parameters:
 index - starting position in the primitive array
 values - array of doubles to write
 Throws:
 IOException
 - writeDouble
```
final void writeDouble(int index,
 double value,
 int count)
 throws IOException
```
 Starting position in the primitive array.
 Parameters:
 index - starting position in the primitive array
 value - double value to write
 count - number of consecutive slots to fill
 Throws:
 IOException
 - writeEnum
```
protected final <E extends Enum<E>> void writeEnum(E value)
 throws IOException
```
 Serialize an enum value to backend storage.
 Throws:
 IOException
 - writeInt
```
final void writeInt(int value)
 throws IOException
```
 Int value to write to backend storage.
 Parameters:
 value - int value to write to backend storage
 Throws:
 IOException
 - writeLong
```
final void writeLong(long value)
 throws IOException
```
 Long value to write to backend storage.
 Parameters:
 value - long value to write to backend storage
 Throws:
 IOException
 - writeString
```
final void writeString(String value)
 throws IOException
```
 String value to write to backend storage.
 Parameters:
 value - string value to write to backend storage
 Throws:
 IOException

Class RrdPrimitive<U extends RrdUpdater<U>>

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

RRD_DOUBLE

RRD_INT

RRD_LONG

RRD_PRIM_SIZES

RRD_STRING

STRING_LENGTH

Constructor Detail

RrdPrimitive

RrdPrimitive

Method Detail

isCachingAllowed

readBytes

readDouble

readDouble

readDouble

readEnum

readInt

readLong

readString

writeBytes

writeDouble

writeDouble

writeDouble

writeDouble

writeEnum

writeInt

writeLong

writeString