97 lines
2.6 KiB
Go
97 lines
2.6 KiB
Go
// Copyright © 2016 Abcum Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package db
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import (
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"errors"
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"runtime"
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)
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type method int
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const (
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_SELECT method = iota
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_CREATE
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_UPDATE
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_DELETE
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)
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const (
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docKeyId = "id"
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docKeyOne = "0"
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docKeyAll = "*"
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)
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const (
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ctxKeyId = "id"
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ctxKeyNs = "ns"
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ctxKeyDb = "db"
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ctxKeyVars = "vars"
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ctxKeySubs = "subs"
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ctxKeySpec = "spec"
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ctxKeyKeep = "keep"
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ctxKeyAuth = "auth"
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ctxKeyKind = "kind"
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ctxKeyScope = "scope"
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)
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const (
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varKeyId = "id"
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varKeyIp = "ip"
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varKeyAuth = "auth"
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varKeyKeep = "keep"
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varKeyThis = "this"
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varKeyScope = "scope"
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varKeyValue = "value"
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varKeyAfter = "after"
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varKeyBefore = "before"
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varKeyMethod = "method"
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varKeyParent = "parent"
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varKeyOrigin = "origin"
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)
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var (
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// maxWorkers enables limiting the maximum number of
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// workers to start, regardless of the CPU count.
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maxWorkers = 1
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// workerCount specifies how many workers should be used
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// to process each query statement concurrently.
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workerCount = runtime.NumCPU() * 2
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// queryIdentFailed occurs when a permission query asks
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// for a field, meaning a document has to be fetched.
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queryIdentFailed = errors.New("Found ident but no doc available")
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// errQueryNotExecuted occurs when a transaction has
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// failed, and the following queries are not executed.
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errQueryNotExecuted = errors.New("Query not executed")
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// errRaceCondition occurs when a record which is locked
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// for editing, is updated from within a subquery.
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errRaceCondition = errors.New("Failed to update the same document recursively")
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// errRecursiveOverload occurs when too many subqueries
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// are executed within one other, causing an endless loop.
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errRecursiveOverload = errors.New("Infinite loop when running recursive subqueries")
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// errFeatureNotImplemented occurs when a feature which
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// has not yet been implemented, has been used in a query.
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errFeatureNotImplemented = errors.New("Feature is not yet implemented")
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// paramSearchKeys specifies the order in which context
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// variables should be checked for any specified value.
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paramSearchKeys = []string{ctxKeySpec, ctxKeySubs, ctxKeyVars, ctxKeyKeep}
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)
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