Class UniqueKeyHelper

java.lang.Object

com.kingsrook.qqq.backend.core.actions.tables.helpers.UniqueKeyHelper

public class UniqueKeyHelper
extends Object

Methods to help with unique key checks.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	UniqueKeyHelper.NullUniqueKeyValue	To make a list of unique key values here behave like they do in an RDBMS (which is what we're trying to mimic - which is - 2 null values in a field aren't considered the same, so they don't violate a unique key) (at least, that's how some RDBMS's work, right??)

Constructor Summary

Constructors

Constructor	Description
UniqueKeyHelper()

Method Summary

Modifier and Type	Method	Description
static Map<List<Serializable>,Serializable>	getExistingKeys(QBackendTransaction transaction, QTableMetaData table, List<QRecord> recordList, UniqueKey uniqueKey)
static Map<List<Serializable>,Serializable>	getExistingKeys(QBackendTransaction transaction, QTableMetaData table, List<QRecord> recordList, UniqueKey uniqueKey, boolean allowNullKeyValuesToEqual)
static Optional<List<Serializable>>	getKeyValues(QTableMetaData table, UniqueKey uniqueKey, QRecord record)
static Optional<List<Serializable>>	getKeyValues(QTableMetaData table, UniqueKey uniqueKey, QRecord record, boolean allowNullKeyValuesToEqual)
static Integer	getPageSize()	Getter for pageSize
static void	setPageSize(Integer pageSize)	Setter for pageSize

Methods inherited from class java.lang.Object

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

Constructor Details

UniqueKeyHelper

public UniqueKeyHelper()

Method Details

getExistingKeys

public static Map<List<Serializable>,Serializable> getExistingKeys(QBackendTransaction transaction,
 QTableMetaData table,
 List<QRecord> recordList,
 UniqueKey uniqueKey,
 boolean allowNullKeyValuesToEqual)
                                                            throws QException

Throws:

QException

getExistingKeys

public static Map<List<Serializable>,Serializable> getExistingKeys(QBackendTransaction transaction,
 QTableMetaData table,
 List<QRecord> recordList,
 UniqueKey uniqueKey)
                                                            throws QException

Throws:

QException

getKeyValues

public static Optional<List<Serializable>> getKeyValues(QTableMetaData table,
 UniqueKey uniqueKey,
 QRecord record,
 boolean allowNullKeyValuesToEqual)

getKeyValues

public static Optional<List<Serializable>> getKeyValues(QTableMetaData table,
 UniqueKey uniqueKey,
 QRecord record)

getPageSize

public static Integer getPageSize()

Getter for pageSize

setPageSize

public static void setPageSize(Integer pageSize)

Setter for pageSize