com.sibvisions.rad.persist.jdbc
Class HSQLDBAccess

java.lang.Object
  com.sibvisions.rad.persist.jdbc.DBAccess
      com.sibvisions.rad.persist.jdbc.HSQLDBAccess

All Implemented Interfaces:

IDBAccess

public class HSQLDBAccess
extends DBAccess

The HSQLDBAccess is the implementation for Hypersonic SQL databases.

See Also:

DBAccess

Field Summary

Fields inherited from class com.sibvisions.rad.persist.jdbc.DBAccess

logger, LONGNVARCHAR, NCHAR, NCLOB, NVARCHAR, SQLXML

Constructor Summary

HSQLDBAccess()
Constructs a new HSQLDBAccess Object.

Method Summary

ServerColumnMetaData[]	getColumnMetaData(String pFromClause, String[] pQueryColumns, String pBeforeQueryColumns, String pWhereClause, String pAfterWhereClause, String pWritebackTable, String[] pWritebackColumns, String[] pMetaDataContext) Returns the meta data for the specified query, and initials all columns.
Hashtable<String,Object>	getDefaultValues(String pCatalog, String pSchema, String pTable) Gets all default column values of a specific table.
List<ForeignKey>	getFKs(String sCatalog, String sSchema, String pTable) Returns all Foreign Keys for the specified table.
String[]	getPK(String sCatalog, String sSchema, String pTable) It's gets all Primary Key columns and return it as String[].
List<String[]>	getUKs(String sCatalog, String sSchema, String pTable) It's gets all columns for each Unique Key and return it.
String	getWritebackTable(String pWritebackTable) Returns the WritebackTable as toUpper, because of the meta data bug in HSQL.
Object[]	insertDatabaseSpecific(String pWritebackTable, String pInsertStatement, ServerMetaData pServerMetaData, Object[] pNewDataRow, String pDummyColumn) Returns the newly inserted row from an Database specific insert statement.
protected Object	translateDefaultValue(String pColumnName, int pDataType, String pDefaultValue) Translates a default value from a column to the datatype object.

Methods inherited from class com.sibvisions.rad.persist.jdbc.DBAccess

close, commit, delete, executeFunction, executeProcedure, executeUpdate, fetch, getAllowedValues, getAutomaticLinkColName, getAutomaticLinkColumnNameTranslation, getConnection, getDatabaseSpecificLockStatement, getDBAccess, getDBProperties, getDBProperty, getDriver, getFromClause, getMaxTime, getPassword, getPreparedStatement, getQueryColumns, getSelectStatement, getUrl, getUsername, getWHEREClause, insert, insertAnsiSQL, isOpen, lockRow, lockRowInternal, open, quote, registerDBAccessClass, rollback, setAutomaticLinkColumnNameTranslation, setColumnsToStore, setDBProperties, setDBProperty, setDriver, setFilterParameter, setMaxTime, setPassword, setQueryTimeOut, setUrl, setUsername, supportsGetGeneratedKeys, toString, translateValue, update, updateAnsiSQL, updateDatabaseSpecific

Methods inherited from class java.lang.Object

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

Constructor Detail

HSQLDBAccess

public HSQLDBAccess()

Constructs a new HSQLDBAccess Object.

Method Detail

getPK

public String[] getPK(String sCatalog,
                      String sSchema,
                      String pTable)
               throws DataSourceException

It's gets all Primary Key columns and return it as String[].

Overrides:

getPK in class DBAccess

Parameters:

sCatalog - the catalog to use

sSchema - the schema to use

pTable - the table to use

Returns:

all Primary Key columns and return it as String[].

Throws:

DataSourceException - if an error occur during PK search process.

getFKs

public List<ForeignKey> getFKs(String sCatalog,
                               String sSchema,
                               String pTable)
                        throws DataSourceException

Returns all Foreign Keys for the specified table.

Overrides:

getFKs in class DBAccess

Parameters:

sCatalog - the catalog to use

sSchema - the schema to use

pTable - the table to use as base table.

Returns:

all Foreign Keys for the specified table.

Throws:

DataSourceException - if an error occur in determining the ForeignKeys.

getUKs

public List<String[]> getUKs(String sCatalog,
                             String sSchema,
                             String pTable)
                      throws DataSourceException

It's gets all columns for each Unique Key and return it.

Overrides:

getUKs in class DBAccess

Parameters:

sCatalog - the catalog to use

sSchema - the schema to use

pTable - the table to use

Returns:

all columns for each Unique Key.

Throws:

DataSourceException - if an error occur during UK search process.

getColumnMetaData

public ServerColumnMetaData[] getColumnMetaData(String pFromClause,
                                                String[] pQueryColumns,
                                                String pBeforeQueryColumns,
                                                String pWhereClause,
                                                String pAfterWhereClause,
                                                String pWritebackTable,
                                                String[] pWritebackColumns,
                                                String[] pMetaDataContext)
                                         throws DataSourceException

Returns the meta data for the specified query, and initials all columns.

Overrides:

getColumnMetaData in class DBAccess

Parameters:

pFromClause - the from clause with query tables and join definitions

pQueryColumns - the query columns

pBeforeQueryColumns - the before query columns

pWhereClause - the last where condition in query

pAfterWhereClause - the after where clause in query

pWritebackTable - the write back table to use for the isWriteable() state (Optional)

pWritebackColumns - the write back columns to use for the isWriteable() state (Optional)

pMetaDataContext - if an String[] with length == 2 is used, the methods returns the MetaData Context back. That's in [0] the Catalog and in [1] the Schema of the pMetaDataQuery, if possible.

Returns:

the meta data for the specified query, and initials all columns.

Throws:

DataSourceException - if an Exception occur during getting the meta data or if the storage is not opened or if one columns SQL type is not supported

insertDatabaseSpecific

public Object[] insertDatabaseSpecific(String pWritebackTable,
                                       String pInsertStatement,
                                       ServerMetaData pServerMetaData,
                                       Object[] pNewDataRow,
                                       String pDummyColumn)
                                throws DataSourceException

Returns the newly inserted row from an Database specific insert statement.
Database specific derivations of DBAcces need to implement it database specific.

Overrides:

insertDatabaseSpecific in class DBAccess

Parameters:

pWritebackTable - the table to use for the insert

pInsertStatement - the SQL Statement to use for the insert

pServerMetaData - the meta data to use.

pNewDataRow - the new row (Object[]) with the values to insert

pDummyColumn - null, if all writeable columns are null, but for a correct INSERT it have to be minimum one column to use in the syntax.

Returns:

the newly inserted row from an Oracle Database.

Throws:

DataSourceException - if an Exception occur during insert to the storage

getDefaultValues

public Hashtable<String,Object> getDefaultValues(String pCatalog,
                                                 String pSchema,
                                                 String pTable)
                                          throws DataSourceException

Gets all default column values of a specific table.

Overrides:

getDefaultValues in class DBAccess

Parameters:

pCatalog - the catalog name

pSchema - the schema name

pTable - the table name

Returns:

a Hashtable with the column name as key and the default value as value. It only contains columns with a default value

Throws:

DataSourceException - if the database access throws an exception

translateDefaultValue

protected Object translateDefaultValue(String pColumnName,
                                       int pDataType,
                                       String pDefaultValue)
                                throws Exception

Translates a default value from a column to the datatype object.

Overrides:

translateDefaultValue in class DBAccess

Parameters:

pColumnName - the column name to translate

pDataType - the datatype of the column

pDefaultValue - the original default value from the database

Returns:

the default value with the datatype of the column or null if the default value is not valid

Throws:

Exception - if the type translation causes an error or the datatype is not supported

getWritebackTable

public String getWritebackTable(String pWritebackTable)

Returns the WritebackTable as toUpper, because of the meta data bug in HSQL.

Parameters:

pWritebackTable - the write back tabel to use.

Returns:

the WritebackTable as toUpper, because of the meta data bug in HSQL.