io.requery.sql.platform

Class PlatformDelegate

java.lang.Object

io.requery.sql.platform.PlatformDelegate

All Implemented Interfaces:

Platform

public class PlatformDelegate
extends Object
implements Platform

Given a Connection will pick a existing platform type based on the JDBC driver metadata product name, otherwise will use Generic as a default.

Constructor Summary

Constructors

Constructor and Description
PlatformDelegate(Connection connection)

Method Summary

Modifier and Type	Method and Description
void	addMappings(Mapping mapping) Given the attribute and FieldType allows the platform to replace the storage type with a platform specific one.
GeneratedColumnDefinition	generatedColumnDefinition()
Generator<LimitedElement>	limitGenerator()
Generator<OrderByElement>	orderByGenerator()
boolean	supportsAddingConstraint()
boolean	supportsGeneratedColumnsInPrepareStatement()
boolean	supportsGeneratedKeysInBatchUpdate()
boolean	supportsIfExists()
boolean	supportsInlineForeignKeyReference()
boolean	supportsUpsert()
String	toString()
Generator<Map<Expression<?>,Object>>	upsertGenerator()
VersionColumnDefinition	versionColumnDefinition()

Methods inherited from class java.lang.Object

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

Constructor Detail

PlatformDelegate

public PlatformDelegate(Connection connection)

Method Detail

addMappings

public void addMappings(Mapping mapping)

Description copied from interface: Platform

Given the attribute and FieldType allows the platform to replace the storage type with a platform specific one. Substitution occurs both for table generation and entity property conversion.

Specified by:

addMappings in interface Platform

Parameters:

mapping - mapping containing type information of what is being read or written.

supportsIfExists

public boolean supportsIfExists()

Specified by:

supportsIfExists in interface Platform

Returns:

true if the database supports the 'if exists' syntax in the create table/index, drop DDL statements.

supportsInlineForeignKeyReference

public boolean supportsInlineForeignKeyReference()

Specified by:

supportsInlineForeignKeyReference in interface Platform

Returns:

false if the database requires foreign keys to be defined as columns in the create table statement. true if they can be inlined in one statement.

supportsAddingConstraint

public boolean supportsAddingConstraint()

Specified by:

supportsAddingConstraint in interface Platform

Returns:

true if the database supports adding a constraint (e.g. foreign key) after the column is created (or if it requires it). In most DDL statements the column is created first and then the constraint is added.

supportsGeneratedKeysInBatchUpdate

public boolean supportsGeneratedKeysInBatchUpdate()

Specified by:

supportsGeneratedKeysInBatchUpdate in interface Platform

Returns:

true if the JDBC driver supports reading generated keys via Statement.getGeneratedKeys().

supportsGeneratedColumnsInPrepareStatement

public boolean supportsGeneratedColumnsInPrepareStatement()

Specified by:

supportsGeneratedColumnsInPrepareStatement in interface Platform

Returns:

true if the JDBC Connection.prepareStatement(String, String[]) method should be used to get the generated key set when inserting records.

supportsUpsert

public boolean supportsUpsert()

Specified by:

supportsUpsert in interface Platform

Returns:

true if the platform supports an upsert (insert or update) operation either via merge or an alternate syntax that is defined in Platform.upsertGenerator()

generatedColumnDefinition

public GeneratedColumnDefinition generatedColumnDefinition()

Specified by:

generatedColumnDefinition in interface Platform

Returns:

the type of generated key type DDL this database supports.

limitGenerator

public Generator<LimitedElement> limitGenerator()

Specified by:

limitGenerator in interface Platform

Returns:

the limit generator for this database

versionColumnDefinition

public VersionColumnDefinition versionColumnDefinition()

Specified by:

versionColumnDefinition in interface Platform

Returns:

the type of version column this database supports.

upsertGenerator

public Generator<Map<Expression<?>,Object>> upsertGenerator()

Specified by:

upsertGenerator in interface Platform

Returns:

the upsert generator for this database

orderByGenerator

public Generator<OrderByElement> orderByGenerator()

Specified by:

orderByGenerator in interface Platform

Returns:

the order by generator for this database

toString

public String toString()

Overrides:

toString in class Object