edu.udo.cs.miningmart.storedProcedures
Interface BusinessDbConnectionSource

All Known Implementing Classes:

CompilerDatabaseService

public interface BusinessDbConnectionSource

Interface implemented by Db to be able to pass a JDBC connection to a time operator (e.g. Windowing), in the case that stored procedures are not available and the same classes are run outside the database.

Version:

$Id: BusinessDbConnectionSource.java,v 1.4 2006/04/11 14:10:16 euler Exp $

Author:

Martin Scholz

Method Summary

java.sql.Connection	getDatabaseConnectionForData()
java.lang.String	getNameOfNumericDatatype() Returns the name that the underlying DBMS uses for numeric datatypes.
java.lang.String	getSelectStringForColumnDataType(java.lang.String owner, java.lang.String tableName, java.lang.String columnName) This method returns the DBMS-dependent SQL command that returns the name of the datatype of the given column in the given table or view (which is owned by the given owner).

Method Detail

getDatabaseConnectionForData

public java.sql.Connection getDatabaseConnectionForData()
                                                 throws java.lang.Exception

Returns:

a Connection to the business database schema.

Throws:

an - exception, if no Connection could be established.

java.lang.Exception

getSelectStringForColumnDataType

public java.lang.String getSelectStringForColumnDataType(java.lang.String owner,
                                                         java.lang.String tableName,
                                                         java.lang.String columnName)

This method returns the DBMS-dependent SQL command that returns the name of the datatype of the given column in the given table or view (which is owned by the given owner).

Parameters:

owner - Name of the owner of the table or view

tableName - Name of a table or view in the business schema

columnName - Name of the column whose datatype is returned

Returns:

the DBMS-dependent name of the datatype of the column with the given name

getNameOfNumericDatatype

public java.lang.String getNameOfNumericDatatype()

Returns the name that the underlying DBMS uses for numeric datatypes.