66 lines
2.3 KiB
Ruby
66 lines
2.3 KiB
Ruby
if defined?(ActiveRecord::ConnectionAdapters::AbstractAdapter)
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module OpenStreetMap
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module PostgreSQL
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module Quoting
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def quote_column_name(name)
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Array(name).map { |n| super(n) }.join(", ")
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end
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end
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module SchemaStatements
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def add_primary_key(table_name, column_name, options = {})
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constraint_name = "#{table_name}_pkey"
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options = options.merge(:name => constraint_name, :unique => true)
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add_index(table_name, column_name, **options)
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set_primary_key table_name, constraint_name
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end
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def remove_primary_key(table_name)
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constraint_name = quote_table_name("#{table_name}_pkey")
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table_name = quote_table_name(table_name)
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execute "ALTER TABLE #{table_name} DROP CONSTRAINT #{constraint_name}"
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end
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def alter_primary_key(table_name, column_name, options = {})
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constraint_name = "#{table_name}_pkey"
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tmp_constraint_name = "#{table_name}_pkey_tmp"
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options = options.merge(:name => tmp_constraint_name, :unique => true)
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add_index(table_name, column_name, **options)
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remove_primary_key table_name
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set_primary_key table_name, tmp_constraint_name
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rename_index table_name, tmp_constraint_name, constraint_name
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end
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def set_primary_key(table_name, constraint_name)
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constraint_name = quote_table_name(constraint_name)
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table_name = quote_table_name(table_name)
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execute "ALTER TABLE #{table_name} ADD PRIMARY KEY USING INDEX #{constraint_name}"
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end
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def create_enumeration(enumeration_name, values)
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execute "CREATE TYPE #{enumeration_name} AS ENUM ('#{values.join '\',\''}')"
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end
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def drop_enumeration(enumeration_name)
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execute "DROP TYPE #{enumeration_name}"
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end
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def rename_enumeration(old_name, new_name)
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old_name = quote_table_name(old_name)
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new_name = quote_table_name(new_name)
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execute "ALTER TYPE #{old_name} RENAME TO #{new_name}"
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end
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end
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end
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end
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ActiveRecord::ConnectionAdapters::PostgreSQL::Quoting.prepend(OpenStreetMap::PostgreSQL::Quoting)
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ActiveRecord::ConnectionAdapters::PostgreSQL::SchemaStatements.prepend(OpenStreetMap::PostgreSQL::SchemaStatements)
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end
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