Class H2Adapter

java.lang.Object

org.apache.cayenne.dba.JdbcAdapter

org.apache.cayenne.dba.h2.H2Adapter

All Implemented Interfaces:

DbAdapter

public class H2Adapter
extends JdbcAdapter

DbAdapter implementation for H2 RDBMS.

Since:

3.0

Field Summary

Fields inherited from class JdbcAdapter

caseInsensitiveCollations, defaultCharColumnLength, ejbqlTranslator, extendedTypes, logger, nativeColumnTypes, quotingStrategy, supportsBatchUpdates, supportsGeneratedKeys, supportsUniqueConstraints

Constructor Summary

Constructors

Constructor	Description
H2Adapter(RuntimeProperties runtimeProperties, List<ExtendedType> defaultExtendedTypes, List<ExtendedType> userExtendedTypes, List<ExtendedTypeFactory> extendedTypeFactories, ValueObjectTypeRegistry valueObjectTypeRegistry)

Method Summary

Modifier and Type	Method	Description
DbAttribute	buildAttribute(String name, String typeName, int type, int maxLength, int scale, boolean allowNulls)	Creates and returns a DbAttribute based on supplied parameters (usually obtained from database metadata).
protected void	configureExtendedTypes(ExtendedTypeMap map)	Installs appropriate ExtendedTypes as converters for passing values between JDBC and Java layers.
protected EJBQLTranslator	createEJBQLTranslator()	Creates and returns an EJBQLTranslator used to generate visitors for EJBQL to SQL translations.
protected NativeColumnType[]	createNativeTypes()	Returns the database-native types supported by this adapter.
PkGenerator	createPkGenerator()	Returns a H2PkGenerator.
void	createTableAppendColumn(StringBuffer sqlBuffer, DbAttribute column)	Appends SQL for column creation to CREATE TABLE buffer.
SQLAction	getAction(Query query, DataNode node)	Uses JdbcActionBuilder to create the right action.
SQLTreeProcessor	getSqlTreeProcessor()

Methods inherited from class JdbcAdapter

bind, bindParameter, bindParameter, createFkConstraint, createQuotingStrategy, createTable, createTableAppendPKClause, createUniqueConstraint, defaultCharColumnLength, dropTableStatements, externalTypesForJdbcType, getBatchTerminator, getEjbqlTranslator, getExtendedTypes, getProcedureTranslator, getQuotingStrategy, getQuotingStrategy, getSelectTranslator, getSQLLogger, getSystemCatalogs, getSystemSchemas, getType, initExtendedTypes, nativeColumnTypes, setEjbqlTranslator, setEjbqlTranslatorFactory, setSupportsBatchUpdates, setSupportsGeneratedKeys, setSupportsUniqueConstraints, sizeAndPrecision, sizeAndScale, supportsBatchUpdates, supportsCatalogsOnReverseEngineering, supportsGeneratedKeys, supportsUniqueConstraints, tableTypeForTable, tableTypeForView, typeSupportsLength, typeSupportsScale, unwrap

Methods inherited from class Object

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

Methods inherited from interface DbAdapter

getEjbqlTranslatorFactory, preferredBindingType, preferredNativeColumnType, supportsGeneratedKeysForBatchInserts

Constructor Details

H2Adapter

public H2Adapter(RuntimeProperties runtimeProperties,
 List<ExtendedType> defaultExtendedTypes,
 List<ExtendedType> userExtendedTypes,
 List<ExtendedTypeFactory> extendedTypeFactories,
 ValueObjectTypeRegistry valueObjectTypeRegistry)

Method Details

createNativeTypes

protected NativeColumnType[] createNativeTypes()

Description copied from class: JdbcAdapter

Returns the database-native types supported by this adapter.

Overrides:

createNativeTypes in class JdbcAdapter

createTableAppendColumn

public void createTableAppendColumn(StringBuffer sqlBuffer,
 DbAttribute column)

Description copied from class: JdbcAdapter

Appends SQL for column creation to CREATE TABLE buffer.

Specified by:

createTableAppendColumn in interface DbAdapter

Overrides:

createTableAppendColumn in class JdbcAdapter

Parameters:

sqlBuffer - the StringBuffer to append the column type to

column - the DbAttribute defining the column to append type for

createPkGenerator

public PkGenerator createPkGenerator()

Returns a H2PkGenerator.

Specified by:

createPkGenerator in interface DbAdapter

Overrides:

createPkGenerator in class JdbcAdapter

getSqlTreeProcessor

public SQLTreeProcessor getSqlTreeProcessor()

Specified by:

getSqlTreeProcessor in interface DbAdapter

Overrides:

getSqlTreeProcessor in class JdbcAdapter

Returns:

SQLTreeProcessor that can adjust SQL tree to specific database flavour

Since:

4.2

createEJBQLTranslator

protected EJBQLTranslator createEJBQLTranslator()

Description copied from class: JdbcAdapter

Creates and returns an EJBQLTranslator used to generate visitors for EJBQL to SQL translations. This method should be overriden by subclasses that need to customize EJBQL generation.

Overrides:

createEJBQLTranslator in class JdbcAdapter

Returns:

translator factory for EJBQL queries

Since:

5.0

getAction

public SQLAction getAction(Query query,
 DataNode node)

Description copied from class: JdbcAdapter

Uses JdbcActionBuilder to create the right action.

Specified by:

getAction in interface DbAdapter

Overrides:

getAction in class JdbcAdapter

configureExtendedTypes

protected void configureExtendedTypes(ExtendedTypeMap map)

Installs appropriate ExtendedTypes as converters for passing values between JDBC and Java layers.

Overrides:

configureExtendedTypes in class JdbcAdapter

Since:

4.1.2

buildAttribute

public DbAttribute buildAttribute(String name,
 String typeName,
 int type,
 int maxLength,
 int scale,
 boolean allowNulls)

Description copied from interface: DbAdapter

Creates and returns a DbAttribute based on supplied parameters (usually obtained from database metadata).

Specified by:

buildAttribute in interface DbAdapter

Overrides:

buildAttribute in class JdbcAdapter

Parameters:

name - database column name

typeName - database specific type name, may be used as a hint to determine the right JDBC type.

type - JDBC column type

maxLength - database column size (ignored if less than zero)

scale - database column scale, i.e. the number of decimal digits (ignored if less than zero)

allowNulls - database column nullable parameter