io.jmix.data.persistence

Interface DbmsFeatures

All Known Implementing Classes:

HsqlDbmsFeatures, MysqlDbmsFeatures, OracleDbmsFeatures, PostgresqlDbmsFeatures, SqlServerDbmsFeatures

public interface DbmsFeatures

Interface defining methods of getting some DBMS-specific values. It must be implemented for each supported DBMS type and version.

See Also:

DbmsSpecifics

Method Summary

Modifier and Type	Method and Description
java.util.Map<java.lang.String,java.lang.String>	getJpaParameters()
default java.lang.Integer	getMaxIdsBatchSize()
java.lang.String	getTimeStampType()
java.lang.String	getTransactionTimeoutStatement()
java.lang.String	getTypeAndVersion() Provides information about jmix.data.dbmsType and jmix.data.dbmsVersion this bean designed for.
java.lang.String	getUniqueConstraintViolationPattern()
java.lang.String	getUuidTypeClassName()
boolean	isNullsLastSorting()
boolean	supportsLobSortingAndFiltering()
default boolean	useOrderByForPaging()

Method Detail

getJpaParameters

java.util.Map<java.lang.String,java.lang.String> getJpaParameters()

Returns:

JPA implementation properties to set in persistence.xml

getTimeStampType

java.lang.String getTimeStampType()

Returns:

name of data type storing date and time

getUuidTypeClassName

@Nullable
java.lang.String getUuidTypeClassName()

Returns:

name of class representing UUID in JDBC driver, or null if no special class required

getTransactionTimeoutStatement

@Nullable
java.lang.String getTransactionTimeoutStatement()

Returns:

statement to issue for setting the current transaction timeout, or null if not required.

The statement text should contain %d placeholder that will be replaced by timeout value in milliseconds.

getUniqueConstraintViolationPattern

java.lang.String getUniqueConstraintViolationPattern()

Returns:

regexp to extract a unique constraint name from an exception message

isNullsLastSorting

boolean isNullsLastSorting()

Returns:

default sort order of null values

supportsLobSortingAndFiltering

boolean supportsLobSortingAndFiltering()

Returns:

true if the DBMS supports equality check and sorting for LOB columns

useOrderByForPaging

default boolean useOrderByForPaging()

Returns:

true if the DBMS supports paging only with order by

getMaxIdsBatchSize

@Nullable
default java.lang.Integer getMaxIdsBatchSize()

Returns:

maximum number of values that can be used in the "IN" operator in a query. null is returned if there is no any limit

getTypeAndVersion

java.lang.String getTypeAndVersion()

Provides information about jmix.data.dbmsType and jmix.data.dbmsVersion this bean designed for. Version can be empty.