com.sibvisions.rad.persist.jdbc
Class DerbyDBAccess

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

All Implemented Interfaces:

IDBAccess

public class DerbyDBAccess
extends DBAccess

The DerbyDBAccess is the implementation for Derby databases. Client driver version.

See Also:

DBAccess

Nested Class Summary

Nested classes/interfaces inherited from class com.sibvisions.rad.persist.jdbc.DBAccess

DBAccess.ColumnMetaDataInfo

Field Summary

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

logger, LONGNVARCHAR, NCHAR, NCLOB, NVARCHAR, QUOTE, SQLXML

Constructor Summary

DerbyDBAccess()
Constructs a new DerbyDBAccess Object.

Method Summary

protected String	createReplace(String pSource, String pOld, String pNew) Create an DB specific replace command, which replacs in the pSource all pOld to pNew.
DBAccess.ColumnMetaDataInfo	getColumnMetaData(String pFromClause, String[] pQueryColumns, String pBeforeQueryColumns, String pWhereClause, String pAfterWhereClause, String pWritebackTable, String[] pWritebackColumns) Returns the meta data information for the specified query, and configures all columns with defaults.
Hashtable<String,Object>	getDefaultValues(String pCatalog, String pSchema, String pTable) Gets all default column values of a specific table.
boolean	supportsGetGeneratedKeys() Returns if this Database specific supports generated keys.
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, convertDatabaseSpecificObjectToValue, convertValueToDatabaseSpecificObject, createWhereColumn, createWhereParam, delete, executeFunction, executeProcedure, executeSql, executeStatement, executeUpdate, fetch, formatSQLException, formatSQLException, getAllowedValues, getAutomaticLinkColumnName, getAutomaticLinkColumnNameTranslation, getConnection, getDatabaseSpecificLockStatement, getDBAccess, getDBAccess, getDBAccess, getDBProperties, getDBProperty, getDefaultAllowedValues, getDefaultSchema, getDriver, getFKs, getFromClause, getMaxTime, getPassword, getPK, getPreparedStatement, getQueryColumns, getSelectStatement, getTableForSynonym, getUKs, getUrl, getUsername, getWHEREClause, insert, insertAnsiSQL, insertDatabaseSpecific, isAutoQuote, isOpen, isTypeEqual, lockRow, lockRowInternal, open, quote, quoteAllways, registerDBAccessClass, removeDBSpecificQuotes, removeQuotes, rollback, setAutomaticLinkColumnNameTranslation, setColumnsToStore, setConnection, setDatabaseSpecificType, setDBProperties, setDBProperty, setDefaultSchema, setDriver, setFilterParameter, setMaxTime, setPassword, setQueryTimeOut, setQuoteCharacters, setUrl, setUsername, splitSchemaTable, toString, translateQuotes, translateValue, update, updateAnsiSQL, updateDatabaseSpecific

Methods inherited from class java.lang.Object

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

Constructor Detail

DerbyDBAccess

public DerbyDBAccess()

Constructs a new DerbyDBAccess Object.

Method Detail

supportsGetGeneratedKeys

public boolean supportsGetGeneratedKeys()

Returns if this Database specific supports generated keys. Because of Derby bug!

Overrides:

supportsGetGeneratedKeys in class DBAccess

Returns:

if this Database specific supports generated keys.

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

createReplace

protected String createReplace(String pSource,
                               String pOld,
                               String pNew)

Create an DB specific replace command, which replacs in the pSource all pOld to pNew. This implementation use the ANSI SQL REPLACE command.

Overrides:

createReplace in class DBAccess

Parameters:

pSource - the source to replace.

pOld - the old value.

pNew - the new value.

Returns:

the SQL command to to this.

getColumnMetaData

public DBAccess.ColumnMetaDataInfo getColumnMetaData(String pFromClause,
                                                     String[] pQueryColumns,
                                                     String pBeforeQueryColumns,
                                                     String pWhereClause,
                                                     String pAfterWhereClause,
                                                     String pWritebackTable,
                                                     String[] pWritebackColumns)
                                              throws DataSourceException

Returns the meta data information for the specified query, and configures all columns with defaults.

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)

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