35 lines
887 B
Go
35 lines
887 B
Go
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package ipld_eth_statedb
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import (
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"context"
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)
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// Database interfaces to support multiple Postgres drivers
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type Database interface {
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Driver
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Statements
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}
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// Driver interface has all the methods required by a driver implementation to support the sql indexer
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type Driver interface {
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QueryRow(ctx context.Context, sql string, args ...interface{}) ScannableRow
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Exec(ctx context.Context, sql string, args ...interface{}) (Result, error)
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}
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// ScannableRow interface to accommodate different concrete row types
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type ScannableRow interface {
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Scan(dest ...interface{}) error
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}
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// Result interface to accommodate different concrete result types
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type Result interface {
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RowsAffected() (int64, error)
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}
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// Statements interface to accommodate different SQL query syntax
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type Statements interface {
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GetContractCodeStmt() string
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GetStateAccountStmt() string
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GetStorageSlotStmt() string
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}
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