Class: ActiveRecord::ConnectionAdapters::IBM_DBConstraint

Inherits:
AbstractTableConstraint show all
Defined in:
lib/connection_adapters/ibm_db_adapter.rb

Constant Summary collapse

ISERIES_PRIMARY_KEY_TYPE = 
"P"
ISERIES_FOREIGN_KEY_TYPE = 
"F"
ISERIES_UNIQUE_KEY_TYPE = 
"U"
ISERIES_CHECK_CONSTRAINT_TYPE = 
"C"

Constants inherited from AbstractTableConstraint

AbstractTableConstraint::CHECK_CONSTRAINT_TYPE, AbstractTableConstraint::FOREIGN_KEY_TYPE, AbstractTableConstraint::PRIMARY_KEY_TYPE, AbstractTableConstraint::UNIQUE_KEY_TYPE

Instance Attribute Summary collapse

Attributes inherited from AbstractTableConstraint

#column_names, #constraint_name, #constraint_type, #referenced_column_names, #referenced_table_name, #table_name, #table_schema

Instance Method Summary collapse

Methods inherited from AbstractTableConstraint

#raise_subclass_responsibility_error

Constructor Details

#initialize(constraint_schema, constraint_name, constraint_type, table_name, column_name, referenced_constraint_name, referenced_table_name, referenced_column_names, delete_rule) ⇒ IBM_DBConstraint

Returns a new instance of IBM_DBConstraint.



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# File 'lib/connection_adapters/ibm_db_adapter.rb', line 26

def initialize(constraint_schema, constraint_name, constraint_type, table_name, column_name,
  referenced_constraint_name, referenced_table_name, referenced_column_names, delete_rule)
  @constraint_schema = constraint_schema
  @constraint_name = constraint_name
  @table_name = table_name
  @constraint_type = constraint_type
  @column_names = column_name.to_a if column_name
  @referenced_table_name = referenced_table_name
  @referenced_constraint_name = referenced_constraint_name
  @delete_rule = delete_rule
  @referenced_column_names = referenced_column_names if referenced_column_names
end

Instance Attribute Details

#delete_rule ⇒ Object (readonly)

Returns the value of attribute delete_rule.



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# File 'lib/connection_adapters/ibm_db_adapter.rb', line 19

def delete_rule
  @delete_rule
end

#referenced_constraint_name ⇒ Object (readonly)

Returns the value of attribute referenced_constraint_name.



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# File 'lib/connection_adapters/ibm_db_adapter.rb', line 19

def referenced_constraint_name
  @referenced_constraint_name
end

#update_rule ⇒ Object (readonly)

Returns the value of attribute update_rule.



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# File 'lib/connection_adapters/ibm_db_adapter.rb', line 19

def update_rule
  @update_rule
end

Instance Method Details

#foreign_key? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/connection_adapters/ibm_db_adapter.rb', line 43

def foreign_key?
  constraint_type == FOREIGN_KEY_TYPE || constraint_type == ISERIES_FOREIGN_KEY_TYPE
end

#is_foreign_constraint?(table_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/connection_adapters/ibm_db_adapter.rb', line 51

def is_foreign_constraint?(table_name)
  @table_name.upcase != table_name.upcase
end

#primary_key? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/connection_adapters/ibm_db_adapter.rb', line 39

def primary_key?
  constraint_type == PRIMARY_KEY_TYPE || constraint_type == ISERIES_PRIMARY_KEY_TYPE
end

#unique_key? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/connection_adapters/ibm_db_adapter.rb', line 47

def unique_key?
  constraint_type == UNIQUE_KEY_TYPE || constraint_type == ISERIES_UNIQUE_KEY_TYPE
end