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37 lines
1.3 KiB
37 lines
1.3 KiB
6 years ago
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# --- !Ups
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CREATE TYPE TPOS_CONTRACT_STATE AS ENUM ('ACTIVE', 'CLOSED');
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-- a contract is created using a 1 XSN which is referenced by the (txid, index).
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-- spending the collateral coin cancels the contract,
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CREATE TABLE tpos_contracts(
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txid TXID_TYPE NOT NULL,
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index NON_NEGATIVE_INT_TYPE NOT NULL,
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owner ADDRESS_TYPE NOT NULL,
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merchant ADDRESS_TYPE NOT NULL,
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merchant_commission INT NOT NULL,
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time BIGINT NOT NULL,
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state TPOS_CONTRACT_STATE NOT NULL,
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closed_on TXID_TYPE NULL,
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-- constraints
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CONSTRAINT tpos_contracts_txid_index_pk PRIMARY KEY (txid, index),
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CONSTRAINT tpos_contracts_txid_index_fk FOREIGN KEY (txid, index) REFERENCES transaction_outputs (txid, index),
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CONSTRAINT merchant_commission_percentage CHECK (merchant_commission > 0 AND merchant_commission < 100),
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CONSTRAINT tpos_contracts_closed_on_fk FOREIGN KEY (closed_on) REFERENCES transactions (txid) ON DELETE SET NULL
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);
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CREATE INDEX tpos_contracts_owner_index ON tpos_contracts USING BTREE (owner);
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CREATE INDEX tpos_contracts_merchant_index ON tpos_contracts USING BTREE (merchant);
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CREATE INDEX tpos_contracts_closed_on_index ON tpos_contracts USING BTREE (closed_on);
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# --- !Downs
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DROP INDEX tpos_contracts_closed_on_index;
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DROP INDEX tpos_contracts_merchant_index;
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DROP INDEX tpos_contracts_owner_index;
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DROP TABLE tpos_contracts;
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DROP TYPE TPOS_CONTRACT_STATE;
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