Package org.eclipse.persistence.internal.sessions

Class EmptyRecord

java.lang.Object

org.eclipse.persistence.internal.core.sessions.CoreAbstractRecord

org.eclipse.persistence.internal.sessions.AbstractRecord

org.eclipse.persistence.sessions.DatabaseRecord

org.eclipse.persistence.internal.sessions.EmptyRecord

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.util.Map, Record

public class EmptyRecord
extends DatabaseRecord

Purpose: Define a singleton empty record to avoid record creation when not required.

Since:

11

Author:

James Sutherland

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.eclipse.persistence.internal.sessions.AbstractRecord

AbstractRecord.EntrySet, AbstractRecord.KeySet, AbstractRecord.NoEntry, AbstractRecord.RecordEntry, AbstractRecord.RecordEntryIterator, AbstractRecord.RecordKeyIterator, AbstractRecord.RecordValuesIterator, AbstractRecord.ValuesSet

Nested classes/interfaces inherited from interface java.util.Map

java.util.Map.Entry<K extends java.lang.Object,V extends java.lang.Object>

Field Summary

Fields

Modifier and Type	Field	Description
static DatabaseRecord	emptyRecord	PERF: Store a singleton empty record to avoid creation when not required.

Fields inherited from class org.eclipse.persistence.internal.sessions.AbstractRecord

fields, lookupField, noEntry, nullValueInFields, size, sopObject, values

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	EmptyRecord()

Method Summary

Modifier and Type	Method	Description
void	add(DatabaseField key, java.lang.Object value)	INTERNAL: Add the field-value pair to the row.
DatabaseRecord	clone()	Need to return a real record.
static DatabaseRecord	getEmptyRecord()	Return the singleton empty record.
java.lang.Object	put(java.lang.String key, java.lang.Object value)	PUBLIC: Add the field-value pair to the row.
java.lang.Object	put(DatabaseField key, java.lang.Object value)	INTERNAL: Add the field-value pair to the row.
void	replaceAt(java.lang.Object value, int index)	INTERNAL: replaces the value at index with value

Methods inherited from class org.eclipse.persistence.internal.sessions.AbstractRecord

clear, contains, containsKey, containsKey, containsKey, containsValue, elements, entrySet, get, get, get, getField, getFields, getIndicatingNoEntry, getIndicatingNoEntry, getLookupField, getSopObject, getValues, getValues, getValues, hasNullValueInFields, hasSopObject, isEmpty, keys, keySet, mergeFrom, put, putAll, remove, remove, remove, replaceAt, resetSize, setFields, setNullValueInFields, setSopObject, setValues, size, toString, values

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, equals, forEach, getOrDefault, hashCode, merge, putIfAbsent, remove, replace, replace, replaceAll

Field Detail

emptyRecord

public static final DatabaseRecord emptyRecord

PERF: Store a singleton empty record to avoid creation when not required.

Constructor Detail

EmptyRecord

protected EmptyRecord()

Method Detail

getEmptyRecord

public static DatabaseRecord getEmptyRecord()

Return the singleton empty record.

clone

public DatabaseRecord clone()

Need to return a real record.

Overrides:

clone in class AbstractRecord

add

public void add(DatabaseField key,
                java.lang.Object value)

Description copied from class: AbstractRecord

INTERNAL: Add the field-value pair to the row. Will not check, will simply add to the end of the row

Overrides:

add in class AbstractRecord

put

public java.lang.Object put(java.lang.String key,
                            java.lang.Object value)

Description copied from class: AbstractRecord

PUBLIC: Add the field-value pair to the row.

Overrides:

put in class AbstractRecord

put

public java.lang.Object put(DatabaseField key,
                            java.lang.Object value)

Description copied from class: AbstractRecord

INTERNAL: Add the field-value pair to the row.

Overrides:

put in class AbstractRecord

replaceAt

public void replaceAt(java.lang.Object value,
                      int index)

Description copied from class: AbstractRecord

INTERNAL: replaces the value at index with value

Overrides:

replaceAt in class AbstractRecord