Commit b69f427

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Add Postgres support for nested subpath (JSON) expressions (#246)

Implement the new SQLDialect.nestedSubpathExpression(in:for:) method for Postgres syntax.

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Lines changed: 1 addition & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -14,7 +14,7 @@ let package = Package(`
`14`	`14`	`],`
`15`	`15`	`dependencies: [`
`16`	`16`	`.package(url: "https://github.com/vapor/postgres-nio.git", from: "1.14.2"),`
`17`		`- .package(url: "https://github.com/vapor/sql-kit.git", from: "3.26.0"),`
	`17`	`+ .package(url: "https://github.com/vapor/sql-kit.git", from: "3.28.0"),`
`18`	`18`	`.package(url: "https://github.com/vapor/async-kit.git", from: "1.14.0"),`
`19`	`19`	`.package(url: "https://github.com/apple/swift-atomics.git", from: "1.1.0")`
`20`	`20`	`],`

Lines changed: 15 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -54,4 +54,19 @@ public struct PostgresDialect: SQLDialect {`
`54`	`54`	`public var sharedSelectLockExpression: (any SQLExpression)? { SQLRaw("FOR SHARE") }`
`55`	`55`
`56`	`56`	`public var exclusiveSelectLockExpression: (any SQLExpression)? { SQLRaw("FOR UPDATE") }`
	`57`	`+`
	`58`	`+ public func nestedSubpathExpression(in column: any SQLExpression, for path: [String]) -> (any SQLExpression)? {`
	`59`	`+ guard !path.isEmpty else { return nil }`
	`60`	`+`
	`61`	`+ let descender = SQLList(`
	`62`	`+ [column] + path.dropLast().map(SQLLiteral.string(_:)),`
	`63`	`+ separator: SQLRaw("->")`
	`64`	`+ )`
	`65`	`+ let accessor = SQLList(`
	`66`	`+ [descender, SQLLiteral.string(path.last!)],`
	`67`	`+ separator: SQLRaw("->>")`
	`68`	`+ )`
	`69`	`+`
	`70`	`+ return SQLGroupExpression(accessor)`
	`71`	`+ }`
`57`	`72`	`}`

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