Class: DBI::DBD::ODBC::Database

Inherits:
BaseDatabase show all
Defined in:
lib/dbd/odbc/database.rb

Overview

See DBI::BaseDatabase.

Instance Method Summary collapse

Methods inherited from BaseDatabase

#[], #initialize

Constructor Details

This class inherits a constructor from DBI::BaseDatabase

Instance Method Details

#[]=(attr, value) ⇒ Object

Additional Attributes on the DatabaseHandle:

  • AutoCommit: force a commit after each statement execution.
  • odbc_ignorecase: Be case-insensitive in operations.
  • odbc_timeout: Return after a certain time regardless of whether the operation returned anything.


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# File 'lib/dbd/odbc/database.rb', line 96

def []=(attr, value)
    case attr
    when 'AutoCommit'
        @handle.autocommit(value)
    when 'odbc_ignorecase'
        @handle.ignorecase(value)
    when 'odbc_timeout'
        @handle.timeout(value)
    else
        if attr =~ /^odbc_/ or attr != /_/
            raise DBI::NotSupportedError, "Option '#{attr}' not supported"
        else # option for some other driver - quitly ignore
            return
        end
    end
    @attr[attr] = value
rescue DBI::DBD::ODBC::ODBCErr => err
    raise DBI::DatabaseError.new(err.message)
end

#columns(table) ⇒ Object

See DBI::BaseDatabase#columns. Additional Attributes:

  • nullable: boolean, true if NULLs are allowed in this column.


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# File 'lib/dbd/odbc/database.rb', line 25

def columns(table)
    cols = []

    stmt = @handle.columns(table)
    stmt.ignorecase = true

    stmt.each_hash do |row|
        info = Hash.new
        cols << info

        info['name']      = row['COLUMN_NAME']
        info['type_name'] = row['TYPE_NAME']
        info['sql_type']  = row['DATA_TYPE']
        info['nullable']  = 
            case row['NULLABLE']
            when 1
                true
            when 0
                false
            else
                nil
            end
        info['precision'] = row['PRECISION']
        info['scale']     = row['SCALE']
    end

    stmt.drop
    cols
rescue DBI::DBD::ODBC::ODBCErr => err
    raise DBI::DatabaseError.new(err.message)
end

#commit ⇒ Object 



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# File 'lib/dbd/odbc/database.rb', line 116

def commit
    @handle.commit
rescue DBI::DBD::ODBC::ODBCErr => err
    raise DBI::DatabaseError.new(err.message)
end

#database_name ⇒ Object 



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# File 'lib/dbd/odbc/database.rb', line 12

def database_name
    @handle.get_info('SQL_DATABASE_NAME')
end

#disconnect ⇒ Object 



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# File 'lib/dbd/odbc/database.rb', line 5

def disconnect
    @handle.rollback
    @handle.disconnect 
rescue DBI::DBD::ODBC::ODBCErr => err
    raise DBI::DatabaseError.new(err.message)
end

#do(statement, *bindvars) ⇒ Object 



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# File 'lib/dbd/odbc/database.rb', line 76

def do(statement, *bindvars)
    @handle.do(statement, *bindvars) 
rescue DBI::DBD::ODBC::ODBCErr => err
    raise DBI::DatabaseError.new(err.message)
end

#execute(statement, *bindvars) ⇒ Object 



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# File 'lib/dbd/odbc/database.rb', line 82

def execute(statement, *bindvars)
    stmt = @handle.run(statement, *bindvars) 
    DBI::DBD::ODBC::Statement.new(stmt, statement)
rescue DBI::DBD::ODBC::ODBCErr => err
    raise DBI::DatabaseError.new(err.message)
end

#ping ⇒ Object 



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# File 'lib/dbd/odbc/database.rb', line 16

def ping
    @handle.connected?
end

#prepare(statement) ⇒ Object 



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# File 'lib/dbd/odbc/database.rb', line 70

def prepare(statement)
    DBI::DBD::ODBC::Statement.new(@handle.prepare(statement), statement)
rescue DBI::DBD::ODBC::ODBCErr => err
    raise DBI::DatabaseError.new(err.message)
end

#rollback ⇒ Object 



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# File 'lib/dbd/odbc/database.rb', line 122

def rollback
    @handle.rollback
rescue DBI::DBD::ODBC::ODBCErr => err
    raise DBI::DatabaseError.new(err.message)
end

#tables ⇒ Object 



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# File 'lib/dbd/odbc/database.rb', line 57

def tables
    stmt = @handle.tables
    stmt.ignorecase = true
    tabs = [] 
    stmt.each_hash {|row|
        tabs << row["TABLE_NAME"]
    }
    stmt.drop
    tabs
rescue DBI::DBD::ODBC::ODBCErr => err
    raise DBI::DatabaseError.new(err.message)
end