org.rhq.core.db

Class H2DatabaseType

java.lang.Object

org.rhq.core.db.DatabaseType

org.rhq.core.db.H2DatabaseType

Direct Known Subclasses:

H2v11DatabaseType, H2v12DatabaseType

public abstract class H2DatabaseType
extends DatabaseType

Superclass of all versions of the H2 database.

Author:

Joseph Marques

Field Summary

Fields

Modifier and Type	Field and Description
static String	VENDOR_NAME The vendor name for all H2 databases.

Constructor Summary

Constructors

Constructor and Description
H2DatabaseType()

Method Summary

Methods

Modifier and Type	Method and Description
void	alterColumn(Connection conn, String table, String column, String generic_column_type, String default_value, String precision, Boolean nullable, Boolean reindex) Alters an existing column.
String	getHibernateDialect() Return the hibernate dialect, that can be used in <property name="hibernate.dialect" value="" / > expressions within persistence.xml
int	getNextSequenceValue(Connection conn, String table, String key) A utility that returns the next value of a sequence.
int	getSequenceValue(Connection conn, String table, String key) Assumes the sequence table is the value of the table argument followed by "_", the value of the key argument and then "_seq".
String	getVendor() Returns VENDOR_NAME.
boolean	isTableNotFoundException(SQLException e) Determines if the given SQL exception was caused by a "table not found" error.
void	reindexTable(Connection conn, String table) Reindexes the given table.

Methods inherited from class org.rhq.core.db.DatabaseType

addColumn, checkColumnExists, checkTableExists, closeConnection, closeJDBCObjects, closeResultSet, closeStatement, countRows, createSequence, deleteColumn, dropSequence, dropTable, executeSelectSql, executeSql, executeSql, getBooleanValue, getDBTypeFromGenericType, getEscapeCharacter, getInteger, getLimitClause, getLong, getName, getSequenceInsertValue, getString, getVersion, insert, matches, setBooleanValue, supportsSelfReferringCascade, toString, update, updateColumn

Methods inherited from class java.lang.Object

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

Field Detail

VENDOR_NAME

public static final String VENDOR_NAME

The vendor name for all H2 databases.

See Also:

Constant Field Values

Constructor Detail

H2DatabaseType

public H2DatabaseType()

Method Detail

getVendor

public String getVendor()

Returns VENDOR_NAME.

Specified by:

getVendor in class DatabaseType

Returns:

name of database vendor

See Also:

DatabaseType.getVendor()

getHibernateDialect

public String getHibernateDialect()

Description copied from class: DatabaseType

Return the hibernate dialect, that can be used in <property name="hibernate.dialect" value="" / > expressions within persistence.xml

Specified by:

getHibernateDialect in class DatabaseType

Returns:

classname of the hibernate dialect

isTableNotFoundException

public boolean isTableNotFoundException(SQLException e)

Description copied from class: DatabaseType

Determines if the given SQL exception was caused by a "table not found" error.

Specified by:

isTableNotFoundException in class DatabaseType

Parameters:

e - the SQL exception that occurred

Returns:

true if the given exception is the database's "table not found" exception.

See Also:

DatabaseType.isTableNotFoundException(SQLException)

getSequenceValue

public int getSequenceValue(Connection conn,
                   String table,
                   String key)
                     throws SQLException

Assumes the sequence table is the value of the table argument followed by "_", the value of the key argument and then "_seq".

Specified by:

getSequenceValue in class DatabaseType

Parameters:

conn - The connection to use to get the sequence value.

table - The table where the sequence is defined.

key - The column on which the sequence is defined.

Returns:

the last value of a sequence

Throws:

SQLException

See Also:

DatabaseType.getSequenceValue(Connection, String, String)

getNextSequenceValue

public int getNextSequenceValue(Connection conn,
                       String table,
                       String key)
                         throws SQLException

Description copied from class: DatabaseType

A utility that returns the next value of a sequence.

Specified by:

getNextSequenceValue in class DatabaseType

Parameters:

conn - The connection to use to get the sequence value.

table - The table where the sequence is defined.

key - The column on which the sequence is defined.

Returns:

the last value of a sequence

Throws:

SQLException

See Also:

DatabaseType.getNextSequenceValue(Connection, String, String)

alterColumn

public void alterColumn(Connection conn,
               String table,
               String column,
               String generic_column_type,
               String default_value,
               String precision,
               Boolean nullable,
               Boolean reindex)
                 throws SQLException

Description copied from class: DatabaseType

Alters an existing column. You can optionally alter the column's type, the default value, precision, and nullability. You can also optionally reindex the table.

Specified by:

alterColumn in class DatabaseType

Parameters:

conn - connection to the database

table - the name of the table where the column exists

column - the name of the column to alter

generic_column_type - the new generic type of the column

default_value - the new default value

precision - the new precision of the column

nullable - the new nullable value (if true, it's value can now be NULL)

reindex - if true, and the DB supports it, the table will be reindexed

Throws:

SQLException

See Also:

DatabaseType.alterColumn(Connection, String, String, String, String, String, Boolean, Boolean)

reindexTable

public void reindexTable(Connection conn,
                String table)
                  throws SQLException

Description copied from class: DatabaseType

Reindexes the given table.

Specified by:

reindexTable in class DatabaseType

Throws:

SQLException

See Also:

DatabaseType.reindexTable(Connection, String)