Record Class JournalEntry

java.lang.Object

java.lang.Record

com.loomcache.server.journal.JournalEntry

Record Components:

sequence - Monotonically increasing sequence number

timestamp - Event creation time in nanoseconds

eventType - Type classifier for the event

key - Key associated with the event (may be null)

payload - Event payload as bytes (may be empty)

metadata - Optional metadata (never null, may be empty)

public record JournalEntry(long sequence, long timestamp, String eventType, String key, byte[] payload, Map<String,String> metadata)
extends Record

Represents a single entry in the distributed event journal.

Each entry is immutable and contains:

• sequence: Monotonically increasing identifier
• timestamp: Creation time in nanoseconds
• eventType: Type classifier for the event
• key: Associated key (may be null)
• payload: Event data as bytes
• metadata: Optional key-value pairs

Since:

1.0

Constructor Summary

Constructors

Constructor	Description
JournalEntry(long sequence, long timestamp, String eventType, String key, byte[] payload, Map<String,String> metadata)	Creates an instance of a JournalEntry record class.

Method Summary

Modifier and Type	Method	Description
final boolean	equals(Object o)	Indicates whether some other object is "equal to" this one.
String	eventType()	Returns the value of the eventType record component.
final int	hashCode()	Returns a hash code value for this object.
String	key()	Returns the value of the key record component.
Map<String,String>	metadata()	Returns the value of the metadata record component.
byte[]	payload()	Returns the value of the payload record component.
long	sequence()	Returns the value of the sequence record component.
long	timestamp()	Returns the value of the timestamp record component.
String	toString()	Compact representation for logging and debugging.

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

JournalEntry

public JournalEntry(long sequence,
 long timestamp,
 String eventType,
 String key,
 byte[] payload,
 Map<String,String> metadata)

Creates an instance of a JournalEntry record class.

Parameters:

sequence - the value for the sequence record component

timestamp - the value for the timestamp record component

eventType - the value for the eventType record component

key - the value for the key record component

payload - the value for the payload record component

metadata - the value for the metadata record component

Method Details

payload

public byte[] payload()

Returns the value of the payload record component.

Returns:

the value of the payload record component

toString

public String toString()

Compact representation for logging and debugging.

Specified by:

toString in class Record

Returns:

formatted string with key fields

hashCode

public final int hashCode()

Returns a hash code value for this object. The value is derived from the hash code of each of the record components.

Specified by:

hashCode in class Record

Returns:

a hash code value for this object

equals

public final boolean equals(Object o)

Indicates whether some other object is "equal to" this one. The objects are equal if the other object is of the same class and if all the record components are equal. Reference components are compared with Objects::equals(Object,Object); primitive components are compared with the compare method from their corresponding wrapper classes.

Specified by:

equals in class Record

Parameters:

o - the object with which to compare

Returns:

true if this object is the same as the o argument; false otherwise.

sequence

public long sequence()

Returns the value of the sequence record component.

Returns:

the value of the sequence record component

timestamp

public long timestamp()

Returns the value of the timestamp record component.

Returns:

the value of the timestamp record component

eventType

public String eventType()

Returns the value of the eventType record component.

Returns:

the value of the eventType record component

key

public String key()

Returns the value of the key record component.

Returns:

the value of the key record component

metadata

public Map<String,String> metadata()

Returns the value of the metadata record component.

Returns:

the value of the metadata record component