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f5aaeb712e
Derived from Dgraph (github.com/dgraph-io/dgraph) at commit 64804bd2, Apache-2.0. See NOTICE. WHAT THIS IS. The graph engine as a Go library: posting lists, the DQL parser, the type and tokenizer system, the index and schema layers, and the wire types. 39,170 lines of the upstream's 166,337. THE STORE is github.com/luxfi/zapdb, a Badger fork that kept the package name, the subpackages (options, pb, y) and the API — Open, OpenManaged, DB, Options — so the 74 import sites are aliased rather than rewritten. THE CODEC is ZAP. zapdb serializes with ZAP, not protobuf: its pb package builds the ZAP types by default and the protobuf ones only under `-tags grpc`, a path that does not compile (table/builder.go calls pb.Marshal, which that tag removes). One call site in posting needed converting; every other type here is Hanzo's own protobuf and is untouched. NO TRANSPORT. An embedded engine dials nothing, so nothing here imports google.golang.org/grpc. Removed: 20 transport functions in x, the generated service stubs for Raft, Zero and Worker (1,657 lines), and the JWT helper — identity belongs to IAM. The core called none of them. NOT KEPT: worker, conn, raftwal, the cluster commands, the GraphQL layer and the test harnesses. `query`, the DQL execution engine, went with them because it depends on worker; parsing DQL is available here, executing it is not. The history of the upstream project lives at github.com/dgraph-io/dgraph. This repository begins at the derivation because three quarters of that history describes code this fork does not carry.
44 lines
1.1 KiB
Go
44 lines
1.1 KiB
Go
/*
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* SPDX-FileCopyrightText: © 2017-2026 Istari Digital, Inc.
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* SPDX-License-Identifier: Apache-2.0
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*/
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package types
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import "github.com/hanzoai/graph/x"
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// CompareVals compares two values using the given comparison type.
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// Should be used only in filtering arg1 by comparing with arg2.
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// arg2 is reference Val to which arg1 is compared.
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func CompareVals(op string, arg1, arg2 Val) bool {
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negateRes := func(b bool, e error) (bool, error) { // reverses result
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return !b, e
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}
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noError := func(b bool, e error) bool {
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return b && e == nil
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}
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switch op {
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case "ge":
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return noError(negateRes(Less(arg1, arg2)))
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case "gt":
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return noError(Less(arg2, arg1))
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case "le":
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return noError(negateRes(Less(arg2, arg1)))
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case "lt":
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return noError(Less(arg1, arg2))
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case "eq":
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return noError(Equal(arg1, arg2))
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default:
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// should have been checked at query level.
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x.Fatalf("Unknown ineqType %v", op)
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}
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return false
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}
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// CompareBetween compares if the dst value lie between
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// two values val1 and val2(both inclusive).
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func CompareBetween(dst, val1, val2 Val) bool {
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return CompareVals("ge", dst, val1) &&
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CompareVals("le", dst, val2)
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}
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