com.sibvisions.rad.persist.jdbc
Class PostgreSQLDBAccess

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

All Implemented Interfaces:

IDBAccess

public class PostgreSQLDBAccess
extends DBAccess

The PostgreSQLDBAccess is the implementation for Postgres databases.

See Also:

DBAccess

Nested Class Summary

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

DBAccess.ColumnMetaDataInfo

Field Summary

static int

TYPE_ENUM the enum datatype.

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

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

Constructor Summary

PostgreSQLDBAccess()
Constructs a new OracleDBAccess Object.

Method Summary

protected Object	convertDatabaseSpecificObjectToValue(ServerColumnMetaData pColumnMetaData, Object pValue) Enables the database specific implementation to handle/convert special objects.
protected String	createWhereColumn(ServerMetaData pServerMetaData, CompareCondition pCompare, String pColumnName) Creates the where column.
protected String	createWhereParam(ServerMetaData pServerMetaData, CompareCondition pCompare) Creates the where parameter.
SQLException	formatSQLException(SQLException pSqlException) Adds the SQL Error Code into the message of the SQL Exception.
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.
String	getDatabaseSpecificLockStatement(String pWritebackTable, ServerMetaData pServerMetaData, ICondition pPKFilter) Returns the database specific statement to lock the specified row in the database.
Hashtable<String,Object>	getDefaultValues(String pCatalog, String pSchema, String pTable) Gets all default column values of a specific table.
Object[]	insertDatabaseSpecific(String pWritebackTable, String pInsertStatement, ServerMetaData pServerMetaData, Object[] pNewDataRow, String pDummyColumn) Returns the newly inserted row from an Database specific insert statement.
boolean	isAutoQuote(String pName) It returns true if this name should be automated quoted.
protected boolean	isEnum(ServerColumnMetaData pColumnMetaData) Gets whether the given column has an enum as datatype.
protected int	setColumnsToStore(PreparedStatement pInsert, ServerColumnMetaData[] pServerColumnMetaData, int[] iaWriteables, Object[] pNew, Object[] pOld) Sets the values of all changed columns to store from the value Object[]s into the PreparedStatement and returns the last used parameter index.
protected boolean	setDatabaseSpecificType(ResultSetMetaData pMetaData, int pColumnIndex, ServerColumnMetaData pColumnMetaData) Enables the database specific implementation to change the metadata before the default settings are made.
void	setUsername(String pUsername) Sets the user name to connect with.
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, convertValueToDatabaseSpecificObject, createReplace, delete, executeFunction, executeProcedure, executeSql, executeStatement, executeUpdate, fetch, formatSQLException, getAllowedValues, getAutomaticLinkColumnName, getAutomaticLinkColumnNameTranslation, getConnection, getDBAccess, getDBAccess, getDBAccess, getDBProperties, getDBProperty, getDefaultAllowedValues, getDefaultSchema, getDriver, getFKs, getFromClause, getMaxTime, getPassword, getPK, getPreparedStatement, getQueryColumns, getSelectStatement, getTableForSynonym, getUKs, getUrl, getUsername, getWHEREClause, insert, insertAnsiSQL, isOpen, isTypeEqual, lockRow, lockRowInternal, open, quote, quoteAllways, registerDBAccessClass, removeDBSpecificQuotes, removeQuotes, rollback, setAutomaticLinkColumnNameTranslation, setConnection, setDBProperties, setDBProperty, setDefaultSchema, setDriver, setFilterParameter, setMaxTime, setPassword, setQueryTimeOut, setQuoteCharacters, setUrl, splitSchemaTable, supportsGetGeneratedKeys, toString, translateQuotes, translateValue, update, updateAnsiSQL, updateDatabaseSpecific

Methods inherited from class java.lang.Object

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

Field Detail

TYPE_ENUM

public static final int TYPE_ENUM

the enum datatype.

See Also:

Constant Field Values

Constructor Detail

PostgreSQLDBAccess

public PostgreSQLDBAccess()

Constructs a new OracleDBAccess Object.

Method Detail

getDatabaseSpecificLockStatement

public String getDatabaseSpecificLockStatement(String pWritebackTable,
                                               ServerMetaData pServerMetaData,
                                               ICondition pPKFilter)
                                        throws DataSourceException

Returns the database specific statement to lock the specified row in the database.

Overrides:

getDatabaseSpecificLockStatement in class DBAccess

Parameters:

pWritebackTable - the table to use.

pServerMetaData - the MetaDataColumn array to use.

pPKFilter - the PK filter with the values to use.

Returns:

the database specific statement to lock the specified row in the database.

Throws:

DataSourceException - if some parts are missing for the statement

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

formatSQLException

public SQLException formatSQLException(SQLException pSqlException)

Adds the SQL Error Code into the message of the SQL Exception.

Overrides:

formatSQLException in class DBAccess

Parameters:

pSqlException - the SQL Exception to use.

Returns:

the SQLException with the modified error message with SQL Error Code.

setColumnsToStore

protected int setColumnsToStore(PreparedStatement pInsert,
                                ServerColumnMetaData[] pServerColumnMetaData,
                                int[] iaWriteables,
                                Object[] pNew,
                                Object[] pOld)
                         throws DataSourceException

Sets the values of all changed columns to store from the value Object[]s into the PreparedStatement and returns the last used parameter index.

Overrides:

setColumnsToStore in class DBAccess

Parameters:

pInsert - the PreparedStatement to initialize

pServerColumnMetaData - the column meta data to use.

iaWriteables - the writable columns as int index array

pNew - the new values Object[]

pOld - the old values Object[]

Returns:

the last used parameter index of the PreparedStatement.

Throws:

DataSourceException - if the values can't set into the PreparedStatement

isAutoQuote

public boolean isAutoQuote(String pName)

Description copied from class: DBAccess

It returns true if this name should be automated quoted. e.g. in Oracle default all isUppercase(), so if the name has one loweCase character, then AutoQuote is true to quote this name.

Overrides:

isAutoQuote in class DBAccess

Parameters:

pName - the name to quote.

Returns:

true if this name should be automated quoted.

setUsername

public void setUsername(String pUsername)

Description copied from class: DBAccess

Sets the user name to connect with.

Overrides:

setUsername in class DBAccess

Parameters:

pUsername - the user name

getColumnMetaData

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

Description copied from class: DBAccess

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

convertDatabaseSpecificObjectToValue

protected Object convertDatabaseSpecificObjectToValue(ServerColumnMetaData pColumnMetaData,
                                                      Object pValue)

Enables the database specific implementation to handle/convert special objects. Some databases have datatypes that are not defined in the standard. This datatypes have specific classes in the JDBC drivers. With this method it is possible to convert the values of specific JDBC driver classes into usable objects. We can not send any JDBC object to the client!

Overrides:

convertDatabaseSpecificObjectToValue in class DBAccess

Parameters:

pColumnMetaData - the column metadata

pValue - the read object

Returns:

the value to use

setDatabaseSpecificType

protected boolean setDatabaseSpecificType(ResultSetMetaData pMetaData,
                                          int pColumnIndex,
                                          ServerColumnMetaData pColumnMetaData)
                                   throws SQLException

Enables the database specific implementation to change the metadata before the default settings are made.

Overrides:

setDatabaseSpecificType in class DBAccess

Parameters:

pMetaData - the metadata from the resultset

pColumnIndex - the column index in the resultset metadata

pColumnMetaData - the newly created and pre-configured column metadata

Returns:

true if column metadata are changed and the default settings should not be applied, false to apply the standard settings

Throws:

SQLException - if metadata access fails

createWhereParam

protected String createWhereParam(ServerMetaData pServerMetaData,
                                  CompareCondition pCompare)

Creates the where parameter. That is normally a single question mark, but it depends on the database if conversions are needed.

Overrides:

createWhereParam in class DBAccess

Parameters:

pServerMetaData - the server metadata

pCompare - the compare condition

Returns:

the parameter representation for where clause

createWhereColumn

protected String createWhereColumn(ServerMetaData pServerMetaData,
                                   CompareCondition pCompare,
                                   String pColumnName)

Creates the where column. That is normally just the column name, but it depends on the database if conversions are needed.

Overrides:

createWhereColumn in class DBAccess

Parameters:

pServerMetaData - the server metadata

pCompare - the compare condition

pColumnName - the column name to use

Returns:

the column name representation for where clause

isEnum

protected boolean isEnum(ServerColumnMetaData pColumnMetaData)
                  throws DataSourceException

Gets whether the given column has an enum as datatype.

Parameters:

pColumnMetaData - the column metadata

Returns:

true if the column has an enum datatype, false otherwise

Throws:

DataSourceException - if enum detection fails