Class | Sequel::Oracle::Dataset
In: | lib/sequel/adapters/oracle.rb
Parent: | Sequel::Dataset

### Methods

call fetch_rows prepare prepare requires_placeholder_type_specifiers?

### Included Modules

DatasetMethods

### Classes and Modules

Module Sequel::Oracle::Dataset::ArgumentMapper
Module Sequel::Oracle::Dataset::BindArgumentMethods
Module Sequel::Oracle::Dataset::PreparedStatementMethods

### Constants

DatasetClass | = | self
PREPARED_ARG_PLACEHOLDER | = | ':'.freeze

### Public Instance methods

call(type, bind_vars={}, *values, &block)

Execute the given type of statement with the hash of values.

[Source]

         # File lib/sequel/adapters/oracle.rb, line 357
    357:       def call(type, bind_vars={}, *values, &block)
    358:         ps = to_prepared_statement(type, values)
    359:         ps.extend(BindArgumentMethods)
    360:         ps.call(bind_vars, &block)
    361:       end

fetch_rows(sql) {|row| ...}

[Source]

         # File lib/sequel/adapters/oracle.rb, line 376
    376:       def fetch_rows(sql)
    377:         execute(sql) do |cursor|
    378:           offset = @opts[:offset]
    379:           rn = row_number_column
    380:           cps = db.conversion_procs
    381:           cols = columns = cursor.get_col_names.map{|c| output_identifier(c)}
    382:           metadata = cursor.column_metadata
    383:           cm = cols.zip(metadata).map{|c, m| [c, cps[m.data_type]]}
    384:           columns = cols.reject{|x| x == rn} if offset
    385:           @columns = columns
    386:           while r = cursor.fetch
    387:             row = {}
    388:             r.zip(cm).each{|v, (c, cp)| row[c] = ((v && cp) ? cp.call(v) : v)}
    389:             row.delete(rn) if offset
    390:             yield row
    391:           end
    392:         end
    393:         self
    394:       end

prepare(type, name=nil, *values)

Prepare the given type of query with the given name and store it in the database. Note that a new native prepared statement is created on each call to this prepared statement.

[Source]

         # File lib/sequel/adapters/oracle.rb, line 366
    366:       def prepare(type, name=nil, *values)
    367:         ps = to_prepared_statement(type, values)
    368:         ps.extend(PreparedStatementMethods)
    369:         if name
    370:           ps.prepared_statement_name = name
    371:           db.prepared_statements[name] = ps
    372:         end
    373:         ps
    374:       end

prepare(type, name=nil, *values)

Create a named prepared statement that is stored in the database (and connection) for reuse.

[Source]

         # File lib/sequel/adapters/oracle.rb, line 398
    398:       def prepare(type, name=nil, *values)
    399:         ps = to_prepared_statement(type, values)
    400:         ps.extend(PreparedStatementMethods)
    401:         if name
    402:           ps.prepared_statement_name = name
    403:           db.prepared_statements[name] = ps
    404:         end
    405:         ps
    406:       end

requires_placeholder_type_specifiers?()

Oracle requires type specifiers for placeholders, at least if you ever want to use a nil/NULL value as the value for the placeholder.

[Source]

         # File lib/sequel/adapters/oracle.rb, line 411
    411:       def requires_placeholder_type_specifiers?
    412:         true
    413:       end

[Validate]