Module org.eclipse.persistence.core

Package org.eclipse.persistence.internal.sessions

Class ResultSetRecord

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.ArrayRecord

org.eclipse.persistence.internal.sessions.ResultSetRecord

All Implemented Interfaces:

Serializable, Cloneable, Map, DataRecord

Direct Known Subclasses:

SimpleResultSetRecord

public class ResultSetRecord
extends ArrayRecord

PERF: Record used by ObjectLevelReadQuery ResultSet optimization. The record corresponds to a single position (resultSet.next() is never called). In case the cached object used instead of creating a new one from the record, the not needed fields' values are never obtained from resultSet (that's especially important for expensive LOBs). If alternatively the record is used to populate an object then all the values obtained from resultSet and resultSet is nullified. In this case the fields' values not required after object population (those not involved in indirection) are nullified to save space in the record.

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

Map.Entry<K extends Object,V extends Object>

Field Summary

Fields

Modifier and Type	Field	Description
protected DatabaseAccessor	accessor
protected ResultSetMetaData	metaData
protected boolean	optimizeData
protected DatabasePlatform	platform
protected ResultSet	resultSet
protected AbstractSession	session

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

fieldsArray, valuesArray

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

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

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ResultSetRecord()
	ResultSetRecord(Vector fields, DatabaseField[] fieldsArray, ResultSet resultSet, ResultSetMetaData metaData, DatabaseAccessor accessor, AbstractSession session, DatabasePlatform platform, boolean optimizeData)

Method Summary

Modifier and Type	Method	Description
protected void	checkValues()	Reset the fields and values from the arrays.
void	clear()	PUBLIC: Clear the contents of the row.
boolean	containsValue(Object value)	PUBLIC: Check if the value is contained in the row.
Object	get(DatabaseField key)	INTERNAL: Retrieve the value for the field.
Object	getIndicatingNoEntry(DatabaseField key)	INTERNAL: Retrieve the value for the field.
boolean	hasResultSet()	Indicates whether resultSet is still here.
void	loadAllValuesFromResultSet()	Obtains all the value from resultSet and removes it.
void	removAllValue()
void	removeNonIndirectionValues()	Remove values corresponding to all fields not related to indirection.
void	removeResultSet()
void	setSopObject(Object sopObject)	INTERNAL:
protected String	toStringAditional()

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

add, clone, containsKey, getField, getFields, getValues, put, remove, replaceAt, replaceAt, setFields, setValues, size, toString

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

contains, containsKey, containsKey, elements, entrySet, get, get, getIndicatingNoEntry, getLookupField, getSopObject, getValues, getValues, hasNullValueInFields, hasSopObject, isEmpty, keys, keySet, mergeFrom, put, put, putAll, remove, remove, resetSize, setNullValueInFields, 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

resultSet

protected transient ResultSet resultSet

metaData

protected transient ResultSetMetaData metaData

accessor

protected transient DatabaseAccessor accessor

platform

protected transient DatabasePlatform platform

optimizeData

protected transient boolean optimizeData

session

protected transient AbstractSession session

Constructor Detail

ResultSetRecord

protected ResultSetRecord()

ResultSetRecord

public ResultSetRecord(Vector fields,
                       DatabaseField[] fieldsArray,
                       ResultSet resultSet,
                       ResultSetMetaData metaData,
                       DatabaseAccessor accessor,
                       AbstractSession session,
                       DatabasePlatform platform,
                       boolean optimizeData)

Method Detail

loadAllValuesFromResultSet

public void loadAllValuesFromResultSet()

Obtains all the value from resultSet and removes it. resultSet must be non null.

removeNonIndirectionValues

public void removeNonIndirectionValues()

Remove values corresponding to all fields not related to indirection.

removAllValue

public void removAllValue()

hasResultSet

public boolean hasResultSet()

Indicates whether resultSet is still here.

removeResultSet

public void removeResultSet()

clear

public void clear()

PUBLIC: Clear the contents of the row.

Specified by:

clear in interface Map

Overrides:

clear in class ArrayRecord

checkValues

protected void checkValues()

Reset the fields and values from the arrays. This removes the optimization if a non-optimized method is called.

Overrides:

checkValues in class ArrayRecord

containsValue

public boolean containsValue(Object value)

PUBLIC: Check if the value is contained in the row.

Specified by:

containsValue in interface Map

Overrides:

containsValue in class ArrayRecord

get

public Object get(DatabaseField key)

INTERNAL: Retrieve the value for the field. If missing null is returned.

Overrides:

get in class ArrayRecord

getIndicatingNoEntry

public Object getIndicatingNoEntry(DatabaseField key)

INTERNAL: Retrieve the value for the field. If missing DatabaseRow.noEntry is returned. PERF: This method is a clone of get() for performance.

Overrides:

getIndicatingNoEntry in class ArrayRecord

toStringAditional

protected String toStringAditional()

Overrides:

toStringAditional in class ArrayRecord

setSopObject

public void setSopObject(Object sopObject)

Description copied from class: AbstractRecord

INTERNAL:

Overrides:

setSopObject in class AbstractRecord