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Djanco

Installation

cargo build

Examples

Usage:

All of the examples share this commandline interface:

Examples:

cargo run --bin example1 --release -- --dataset=/mnt/data/dejacode/dataset --output=/mnt/data/dejacode/output --cache=/mnt/data/dejacode/cache
cargo run --bin example2 --release -- --dataset=/mnt/data/dejacode/dataset --output=/mnt/data/dejacode/output --cache=/mnt/data/dejacode/cache
cargo run --bin example3 --release -- --dataset=/mnt/data/dejacode/dataset --output=/mnt/data/dejacode/output --cache=/mnt/data/dejacode/cache
cargo run --bin example_queries --release -- --dataset=/mnt/data/dejacode/dataset --output=/mnt/data/dejacode/output --cache=/mnt/data/dejacode/cache
cargo run --bin paper_example --release -- --dataset=/mnt/data/dejacode/dataset --output=/mnt/data/dejacode/output --cache=/mnt/data/dejacode/cache
cargo run --bin dsl --release -- --dataset=/mnt/data/dejacode/dataset --output=/mnt/data/dejacode/output --cache=/mnt/data/dejacode/cache

All examples share the same commandline interface:

USAGE:
    cargo run --bin example1 -- [FLAGS] [OPTIONS] --dataset <DCD_PATH> --output <OUTPUT_PATH> --cache <PERSISTENT_CACHE_PATH>

FLAGS:
    -h, --help              Prints help information
    -V, --version           Prints version information

OPTIONS:  
    -d, --dataset <DCD_PATH>               
    -o, --output <OUTPUT_PATH>             
    -c, --cache <PERSISTENT_CACHE_PATH>

DSL (WIP)

Entry points

  • projects
  • commits
  • snapshots
  • users
  • paths

Verbs

  • filter_by(Filter)
  • map_into(Attribute)
  • sort_by(Attribute)
  • group_by(Attribute)
  • ungroup
  • sample(Sampler)

Samplers

  • Top(usize)
  • Random(usize, Seed(u128))
  • Distinct(Sampler, SimilarityCritertion)

There is currently only one similarity critetion:

  • MinRatio(Attribute, f64)

Here, f64 is the expected minimum ratio of unique elements in Attribute between two different objects.

Predicates

Numeric conditions:

  • LessThan(Attribute, Number)
  • AtMost(Attribute, Number)
  • Equal(Attribute, Number)
  • AtLeast(Attribute, Number)
  • MoreThan(Attribute, Number)

Boolean conditions:

  • And(Attribute, Attrtibute)
  • Or(Attribute, Attribute)
  • Not(Attribute)

Option conditions:

  • Exists(Attribute)
  • Missing(Attribute)

String comparisons:

  • Same(Attribute, str)
  • Contains(Attribute, str)
  • Matches(Attribute, Regex) and there's a macro regex!(str) that compiles a string into a regular expression.

Collection conditions:

  • Member(Attribute, Collection)
  • AllIn(Attribute, Collection)
  • AnyIn(Attribute, Collection)

Statistical functions

  • Min(Attribute)
  • Max(Attribute)
  • MinMax(Attribute)
  • Mean(Attribute)
  • Median(Attribute)

Extracting attributes of attributes

  • From(Attribute, Attribute)
  • FromEach(Attribute, Attribute)
  • FromEachIf(Attribute, Attribute, Predicate)
  • Select1(Attribute)
  • Select2(Attribute, Attribute)
  • Select3(Attribute, Attribute, Attribute)
  • Select4(Attribute, Attribute, Attribute, ...)
  • Select5(Attribute, Attribute, Attribute, ...)
  • Select6(Attribute, Attribute, Attribute, ...)
  • Select7(Attribute, Attribute, Attribute, ...)
  • Select8(Attribute, Attribute, Attribute, ...)
  • Select9(Attribute, Attribute, Attribute, ...)
  • Select10(Attribute, Attribute, Attribute, ...)

Attributes

Project attributes:

  • Id -> ProjectId
  • URL -> String
  • Issues -> usize (currently panics)
  • BuggyIssues -> usize (currently panics)
  • IsFork -> bool
  • IsArchived -> bool
  • IsDisabled -> bool
  • Stars -> usize
  • Watchers -> usize
  • Size -> usize
  • OpenIssues -> usize
  • Forks -> usize
  • Subscribers -> usize
  • License -> String
  • Language -> Language enum
  • Description -> String
  • Homepage -> String
  • HasIssues -> bool
  • HasDownloads -> bool
  • HasWiki -> bool
  • HasPages -> bool
  • Created -> i64 timestamp
  • Updated -> i64 timestamp
  • Pushed -> i64 timestamp
  • DefaultBranch -> String
  • Age -> usize
  • Heads -> Vec<Head>
  • CommitIds -> Vec<CommitId>
  • AuthorIds -> Vec<UserId>
  • CommitterIds -> Vec<UserId>
  • UserIds -> Vec<User>
  • PathIds -> Vec<PathId>
  • SnapshotIds -> Vec<SnapshotId>
  • Commits -> Vec<Commit>
  • Authors -> Vec<User>
  • Committers -> Vec<User>
  • Users -> Vec<User>
  • Paths -> Vec<Path>
  • Snapshots -> Vec<Snapshot>
  • Itself -> Project
  • Raw -> Project without a reference to the database

Commit attributes:

  • Id -> CommitId
  • CommitterId -> UserId
  • AuthorId -> UserId
  • Committer -> User
  • Author -> User
  • Hash -> String
  • Message -> String
  • MessageLength -> usize
  • AuthoredTimestamp -> i64 timestamp
  • CommittedTimestamp -> i64 timestamp
  • PathIds -> Vec<PathId>
  • SnapshotIds -> Vec<SnapshotId>
  • ParentIds -> Vec<ParentId>
  • Paths -> Vec<Path>
  • Snapshots -> Vec<Snapshot>
  • Parents -> Vec<Commit>
  • Itself -> Commit
  • Raw -> Commit without a reference to the database

Head attributes:

  • Name -> String
  • CommitId -> CommitId
  • Commit -> Commit
  • Itself -> Head
  • Raw -> Head without a reference to the database

Change attributes:

  • PathId -> PathId
  • SnapshotId -> SnapshotId
  • Path -> Path
  • Snapshot -> Snapshot
  • Itself -> Change
  • Raw -> Change without a reference to the database

User attributes:

  • Id -> UserId
  • Email -> String
  • AuthorExperience -> i64 timestamp
  • CommitterExperience -> i64 timestamp
  • Experience -> i64 timestamp
  • AuthoredCommitIds -> Vec<CommitId>
  • CommittedCommitIds -> Vec<CommitId>
  • AuthoredCommits -> Vec<Commit>
  • CommittedCommits -> Vec<Commit>
  • Itself -> User
  • Raw -> User without a reference to the database

Path attributes:

  • Id -> PathId
  • Location -> String
  • Language -> Language enum
  • Itself -> Path
  • Raw -> Path without a reference to the database

Snapshot attributes:

  • Id -> SnapshotId
  • Bytes -> Vec<u8> (faithful)
  • Contents -> String (lossy UTF-8)
  • Itself -> Snapshot
  • Raw -> Snapshot without a reference to the database

About

Dejacode query execution server.

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