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9 changes: 8 additions & 1 deletion .gitignore
Original file line number Diff line number Diff line change
Expand Up @@ -102,4 +102,11 @@ src/Backend/test_data/json

# Allow s3_source directory
!src/Backend/test_data/s3_source/
!src/Backend/test_data/s3_source/**
!src/Backend/test_data/s3_source/**

# Allow a specific CSV dataset that we want tracked despite the general csv ignores
!src/Backend/test_data/csv/
!src/Backend/test_data/csv/Mental_Health_and_Social_Media_Balance_Dataset.csv
# allow parquet file
!src/Backend/test_data/parquet/
!src/Backend/test_data/parquet/capitals_clean.parquet
6 changes: 6 additions & 0 deletions CONTRIBUTING.md
Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,12 @@ We use a Makefile to simplify common development tasks. All commands should be r
```bash
make go-test-coverage
```
- Run test with html coverage
```bash
go test ./... -coverprofile=coverage.out
go tool cover -html=coverage.out
```


### Rust Tests
- Run all tests
Expand Down
1 change: 0 additions & 1 deletion Makefile
Original file line number Diff line number Diff line change
Expand Up @@ -29,7 +29,6 @@ go-test-coverage:
@echo "Running Go tests with coverage..."
cd src/Backend/opti-sql-go && go test -v -coverprofile=coverage.out ./...
cd src/Backend/opti-sql-go && go tool cover -func=coverage.out

go-run:
@echo "Running Go application..."
cd src/Backend/opti-sql-go && go run main.go
Expand Down
35 changes: 31 additions & 4 deletions src/Backend/opti-sql-go/config/config.go
Original file line number Diff line number Diff line change
Expand Up @@ -16,10 +16,11 @@ var (
)

type Config struct {
Server serverConfig `yaml:"server"`
Batch batchConfig `yaml:"batch"`
Query queryConfig `yaml:"query"`
Metrics metricsConfig `yaml:"metrics"`
Server serverConfig `yaml:"server"`
Batch batchConfig `yaml:"batch"`
Query queryConfig `yaml:"query"`
Metrics metricsConfig `yaml:"metrics"`
Secretes secretesConfig // do not read these from yaml
}
type serverConfig struct {
Port int `yaml:"port"`
Expand All @@ -32,6 +33,9 @@ type batchConfig struct {
EnableParallelRead bool `yaml:"enable_parallel_read"`
MaxMemoryBeforeSpill uint64 `yaml:"max_memory_before_spill"`
MaxFileSizeMB int `yaml:"max_file_size_mb"` // max size of a single file
// TODO: add test for these two fileds, just add to existing test
ShouldDowndload bool `yaml:"should_download"`
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MaxDownloadSizeMB int `yaml:"max_download_size_mb"` // max size to download from external sources like S3
}
type queryConfig struct {
// should results be cached, server side? if so how long
Expand All @@ -51,6 +55,12 @@ type metricsConfig struct {
// memory usage over time
EnableMemoryStats bool `yaml:"enable_memory_stats"`
}
type secretesConfig struct {
AccessKey string `yaml:"access_key"`
SecretKey string `yaml:"secret_key"`
EndpointURL string `yaml:"endpoint_url"`
BucketName string `yaml:"bucket_name"`
}

var configInstance *Config = &Config{
Server: serverConfig{
Expand All @@ -64,6 +74,10 @@ var configInstance *Config = &Config{
EnableParallelRead: true,
MaxMemoryBeforeSpill: uint64(gigaByte) * 2, // 2GB
MaxFileSizeMB: 500, // 500MB
// should we download files from external sources like S3
// if so whats the max size to download, if its greater than dont download the file locally
ShouldDowndload: true,
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Outdated
MaxDownloadSizeMB: 10, // 10MB
},
Query: queryConfig{
EnableCache: true,
Expand All @@ -79,6 +93,13 @@ var configInstance *Config = &Config{
EnableQueryStats: true,
EnableMemoryStats: true,
},
// TODO: remove hardcoded secretes before production. we are just testing for now
Secretes: secretesConfig{
AccessKey: "DO8013ZT6VDHJ2EM94RN",
SecretKey: "kPvQSMt6naiwe/FhDnzXpYmVE5yzJUsIR0/OJpsUNzo",
EndpointURL: "atl1.digitaloceanspaces.com",
BucketName: "test-bucket-pull-down",
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},
}

func GetConfig() *Config {
Expand Down Expand Up @@ -138,6 +159,12 @@ func mergeConfig(dst *Config, src map[string]interface{}) {
if v, ok := batch["max_file_size_mb"].(int); ok {
dst.Batch.MaxFileSizeMB = v
}
if v, ok := batch["should_download"].(bool); ok {
dst.Batch.ShouldDowndload = v
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}
if v, ok := batch["max_download_size_mb"].(int); ok {
dst.Batch.MaxDownloadSizeMB = v
}
}

// =============================
Expand Down
28 changes: 28 additions & 0 deletions src/Backend/opti-sql-go/go.mod
Original file line number Diff line number Diff line change
Expand Up @@ -3,17 +3,45 @@ module opti-sql-go
go 1.24.0

require (
github.com/apache/arrow/go/v15 v15.0.2
github.com/apache/arrow/go/v17 v17.0.0
github.com/aws/aws-sdk-go v1.55.8
github.com/aws/aws-sdk-go-v2 v1.39.6
github.com/aws/aws-sdk-go-v2/service/s3 v1.90.2
github.com/joho/godotenv v1.5.1
google.golang.org/grpc v1.63.2
google.golang.org/protobuf v1.34.2
gopkg.in/yaml.v3 v3.0.1
)

require (
github.com/JohnCGriffin/overflow v0.0.0-20211019200055-46fa312c352c // indirect
github.com/andybalholm/brotli v1.1.0 // indirect
github.com/apache/thrift v0.20.0 // indirect
github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.3 // indirect
github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.13 // indirect
github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.13 // indirect
github.com/aws/aws-sdk-go-v2/internal/v4a v1.4.13 // indirect
github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.13.3 // indirect
github.com/aws/aws-sdk-go-v2/service/internal/checksum v1.9.4 // indirect
github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.13.13 // indirect
github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.19.13 // indirect
github.com/aws/smithy-go v1.23.2 // indirect
github.com/go-ini/ini v1.67.0 // indirect
github.com/goccy/go-json v0.10.3 // indirect
github.com/golang/snappy v0.0.4 // indirect
github.com/google/flatbuffers v24.3.25+incompatible // indirect
github.com/jmespath/go-jmespath v0.4.0 // indirect
github.com/klauspost/asmfmt v1.3.2 // indirect
github.com/klauspost/compress v1.17.9 // indirect
github.com/klauspost/cpuid/v2 v2.2.8 // indirect
github.com/minio/asm2plan9s v0.0.0-20200509001527-cdd76441f9d8 // indirect
github.com/minio/c2goasm v0.0.0-20190812172519-36a3d3bbc4f3 // indirect
github.com/minio/minio-go v6.0.14+incompatible // indirect
github.com/mitchellh/go-homedir v1.1.0 // indirect
github.com/pierrec/lz4/v4 v4.1.21 // indirect
github.com/zeebo/xxh3 v1.0.2 // indirect
golang.org/x/crypto v0.24.0 // indirect
golang.org/x/exp v0.0.0-20240222234643-814bf88cf225 // indirect
golang.org/x/mod v0.18.0 // indirect
golang.org/x/net v0.26.0 // indirect
Expand Down
56 changes: 56 additions & 0 deletions src/Backend/opti-sql-go/go.sum
Original file line number Diff line number Diff line change
@@ -1,27 +1,82 @@
github.com/JohnCGriffin/overflow v0.0.0-20211019200055-46fa312c352c h1:RGWPOewvKIROun94nF7v2cua9qP+thov/7M50KEoeSU=
github.com/JohnCGriffin/overflow v0.0.0-20211019200055-46fa312c352c/go.mod h1:X0CRv0ky0k6m906ixxpzmDRLvX58TFUKS2eePweuyxk=
github.com/andybalholm/brotli v1.1.0 h1:eLKJA0d02Lf0mVpIDgYnqXcUn0GqVmEFny3VuID1U3M=
github.com/andybalholm/brotli v1.1.0/go.mod h1:sms7XGricyQI9K10gOSf56VKKWS4oLer58Q+mhRPtnY=
github.com/apache/arrow/go/v15 v15.0.2 h1:60IliRbiyTWCWjERBCkO1W4Qun9svcYoZrSLcyOsMLE=
github.com/apache/arrow/go/v15 v15.0.2/go.mod h1:DGXsR3ajT524njufqf95822i+KTh+yea1jass9YXgjA=
github.com/apache/arrow/go/v17 v17.0.0 h1:RRR2bdqKcdbss9Gxy2NS/hK8i4LDMh23L6BbkN5+F54=
github.com/apache/arrow/go/v17 v17.0.0/go.mod h1:jR7QHkODl15PfYyjM2nU+yTLScZ/qfj7OSUZmJ8putc=
github.com/apache/thrift v0.20.0 h1:631+KvYbsBZxmuJjYwhezVsrfc/TbqtZV4QcxOX1fOI=
github.com/apache/thrift v0.20.0/go.mod h1:hOk1BQqcp2OLzGsyVXdfMk7YFlMxK3aoEVhjD06QhB8=
github.com/aws/aws-sdk-go v1.55.8 h1:JRmEUbU52aJQZ2AjX4q4Wu7t4uZjOu71uyNmaWlUkJQ=
github.com/aws/aws-sdk-go v1.55.8/go.mod h1:ZkViS9AqA6otK+JBBNH2++sx1sgxrPKcSzPPvQkUtXk=
github.com/aws/aws-sdk-go-v2 v1.39.6 h1:2JrPCVgWJm7bm83BDwY5z8ietmeJUbh3O2ACnn+Xsqk=
github.com/aws/aws-sdk-go-v2 v1.39.6/go.mod h1:c9pm7VwuW0UPxAEYGyTmyurVcNrbF6Rt/wixFqDhcjE=
github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.3 h1:DHctwEM8P8iTXFxC/QK0MRjwEpWQeM9yzidCRjldUz0=
github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.3/go.mod h1:xdCzcZEtnSTKVDOmUZs4l/j3pSV6rpo1WXl5ugNsL8Y=
github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.13 h1:a+8/MLcWlIxo1lF9xaGt3J/u3yOZx+CdSveSNwjhD40=
github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.13/go.mod h1:oGnKwIYZ4XttyU2JWxFrwvhF6YKiK/9/wmE3v3Iu9K8=
github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.13 h1:HBSI2kDkMdWz4ZM7FjwE7e/pWDEZ+nR95x8Ztet1ooY=
github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.13/go.mod h1:YE94ZoDArI7awZqJzBAZ3PDD2zSfuP7w6P2knOzIn8M=
github.com/aws/aws-sdk-go-v2/internal/v4a v1.4.13 h1:eg/WYAa12vqTphzIdWMzqYRVKKnCboVPRlvaybNCqPA=
github.com/aws/aws-sdk-go-v2/internal/v4a v1.4.13/go.mod h1:/FDdxWhz1486obGrKKC1HONd7krpk38LBt+dutLcN9k=
github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.13.3 h1:x2Ibm/Af8Fi+BH+Hsn9TXGdT+hKbDd5XOTZxTMxDk7o=
github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.13.3/go.mod h1:IW1jwyrQgMdhisceG8fQLmQIydcT/jWY21rFhzgaKwo=
github.com/aws/aws-sdk-go-v2/service/internal/checksum v1.9.4 h1:NvMjwvv8hpGUILarKw7Z4Q0w1H9anXKsesMxtw++MA4=
github.com/aws/aws-sdk-go-v2/service/internal/checksum v1.9.4/go.mod h1:455WPHSwaGj2waRSpQp7TsnpOnBfw8iDfPfbwl7KPJE=
github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.13.13 h1:kDqdFvMY4AtKoACfzIGD8A0+hbT41KTKF//gq7jITfM=
github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.13.13/go.mod h1:lmKuogqSU3HzQCwZ9ZtcqOc5XGMqtDK7OIc2+DxiUEg=
github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.19.13 h1:zhBJXdhWIFZ1acfDYIhu4+LCzdUS2Vbcum7D01dXlHQ=
github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.19.13/go.mod h1:JaaOeCE368qn2Hzi3sEzY6FgAZVCIYcC2nwbro2QCh8=
github.com/aws/aws-sdk-go-v2/service/s3 v1.90.2 h1:DhdbtDl4FdNlj31+xiRXANxEE+eC7n8JQz+/ilwQ8Uc=
github.com/aws/aws-sdk-go-v2/service/s3 v1.90.2/go.mod h1:+wArOOrcHUevqdto9k1tKOF5++YTe9JEcPSc9Tx2ZSw=
github.com/aws/smithy-go v1.23.2 h1:Crv0eatJUQhaManss33hS5r40CG3ZFH+21XSkqMrIUM=
github.com/aws/smithy-go v1.23.2/go.mod h1:LEj2LM3rBRQJxPZTB4KuzZkaZYnZPnvgIhb4pu07mx0=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/go-ini/ini v1.67.0 h1:z6ZrTEZqSWOTyH2FlglNbNgARyHG8oLW9gMELqKr06A=
github.com/go-ini/ini v1.67.0/go.mod h1:ByCAeIL28uOIIG0E3PJtZPDL8WnHpFKFOtgjp+3Ies8=
github.com/goccy/go-json v0.10.3 h1:KZ5WoDbxAIgm2HNbYckL0se1fHD6rz5j4ywS6ebzDqA=
github.com/goccy/go-json v0.10.3/go.mod h1:oq7eo15ShAhp70Anwd5lgX2pLfOS3QCiwU/PULtXL6M=
github.com/golang/snappy v0.0.4 h1:yAGX7huGHXlcLOEtBnF4w7FQwA26wojNCwOYAEhLjQM=
github.com/golang/snappy v0.0.4/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
github.com/google/flatbuffers v24.3.25+incompatible h1:CX395cjN9Kke9mmalRoL3d81AtFUxJM+yDthflgJGkI=
github.com/google/flatbuffers v24.3.25+incompatible/go.mod h1:1AeVuKshWv4vARoZatz6mlQ0JxURH0Kv5+zNeJKJCa8=
github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
github.com/jmespath/go-jmespath v0.4.0 h1:BEgLn5cpjn8UN1mAw4NjwDrS35OdebyEtFe+9YPoQUg=
github.com/jmespath/go-jmespath v0.4.0/go.mod h1:T8mJZnbsbmF+m6zOOFylbeCJqk5+pHWvzYPziyZiYoo=
github.com/jmespath/go-jmespath/internal/testify v1.5.1/go.mod h1:L3OGu8Wl2/fWfCI6z80xFu9LTZmf1ZRjMHUOPmWr69U=
github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
github.com/klauspost/asmfmt v1.3.2 h1:4Ri7ox3EwapiOjCki+hw14RyKk201CN4rzyCJRFLpK4=
github.com/klauspost/asmfmt v1.3.2/go.mod h1:AG8TuvYojzulgDAMCnYn50l/5QV3Bs/tp6j0HLHbNSE=
github.com/klauspost/compress v1.17.9 h1:6KIumPrER1LHsvBVuDa0r5xaG0Es51mhhB9BQB2qeMA=
github.com/klauspost/compress v1.17.9/go.mod h1:Di0epgTjJY877eYKx5yC51cX2A2Vl2ibi7bDH9ttBbw=
github.com/klauspost/cpuid/v2 v2.2.8 h1:+StwCXwm9PdpiEkPyzBXIy+M9KUb4ODm0Zarf1kS5BM=
github.com/klauspost/cpuid/v2 v2.2.8/go.mod h1:Lcz8mBdAVJIBVzewtcLocK12l3Y+JytZYpaMropDUws=
github.com/minio/asm2plan9s v0.0.0-20200509001527-cdd76441f9d8 h1:AMFGa4R4MiIpspGNG7Z948v4n35fFGB3RR3G/ry4FWs=
github.com/minio/asm2plan9s v0.0.0-20200509001527-cdd76441f9d8/go.mod h1:mC1jAcsrzbxHt8iiaC+zU4b1ylILSosueou12R++wfY=
github.com/minio/c2goasm v0.0.0-20190812172519-36a3d3bbc4f3 h1:+n/aFZefKZp7spd8DFdX7uMikMLXX4oubIzJF4kv/wI=
github.com/minio/c2goasm v0.0.0-20190812172519-36a3d3bbc4f3/go.mod h1:RagcQ7I8IeTMnF8JTXieKnO4Z6JCsikNEzj0DwauVzE=
github.com/minio/minio-go v6.0.14+incompatible h1:fnV+GD28LeqdN6vT2XdGKW8Qe/IfjJDswNVuni6km9o=
github.com/minio/minio-go v6.0.14+incompatible/go.mod h1:7guKYtitv8dktvNUGrhzmNlA5wrAABTQXCoesZdFQO8=
github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG+4E0Y=
github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
github.com/pierrec/lz4/v4 v4.1.21 h1:yOVMLb6qSIDP67pl/5F7RepeKYu/VmTyEXvuMI5d9mQ=
github.com/pierrec/lz4/v4 v4.1.21/go.mod h1:gZWDp/Ze/IJXGXf23ltt2EXimqmTUXEy0GFuRQyBid4=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
github.com/zeebo/assert v1.3.0 h1:g7C04CbJuIDKNPFHmsk4hwZDO5O+kntRxzaUoNXj+IQ=
github.com/zeebo/assert v1.3.0/go.mod h1:Pq9JiuJQpG8JLJdtkwrJESF0Foym2/D9XMU5ciN/wJ0=
github.com/zeebo/xxh3 v1.0.2 h1:xZmwmqxHZA8AI603jOQ0tMqmBr9lPeFwGg6d+xy9DC0=
github.com/zeebo/xxh3 v1.0.2/go.mod h1:5NWz9Sef7zIDm2JHfFlcQvNekmcEl9ekUZQQKCYaDcA=
golang.org/x/crypto v0.24.0 h1:mnl8DM0o513X8fdIkmyFE/5hTYxbwYOjDS/+rK6qpRI=
golang.org/x/crypto v0.24.0/go.mod h1:Z1PMYSOR5nyMcyAVAIQSKCDwalqy85Aqn1x3Ws4L5DM=
golang.org/x/exp v0.0.0-20240222234643-814bf88cf225 h1:LfspQV/FYTatPTr/3HzIcmiUFH7PGP+OQ6mgDYo3yuQ=
golang.org/x/exp v0.0.0-20240222234643-814bf88cf225/go.mod h1:CxmFvTBINI24O/j8iY7H1xHzx2i4OsyguNBmN/uPtqc=
golang.org/x/mod v0.18.0 h1:5+9lSbEzPSdWkH32vYPBwEpX8KwDbM52Ud9xBUvNlb0=
Expand All @@ -48,5 +103,6 @@ google.golang.org/grpc v1.63.2/go.mod h1:WAX/8DgncnokcFUldAxq7GeB5DXHDbMF+lLvDom
google.golang.org/protobuf v1.34.2 h1:6xV6lTsCfpGD21XK49h7MhtcApnLqkfYgPcdHftf6hg=
google.golang.org/protobuf v1.34.2/go.mod h1:qYOHts0dSfpeUzUFpOMr/WGzszTmLH+DiWniOlNbLDw=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
2 changes: 2 additions & 0 deletions src/Backend/opti-sql-go/main.go
Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,8 @@ import (
"os"
)

// TODO: in the project operators make sure the record batches account for the RowCount field properly.

func main() {
if len(os.Args) > 1 {
if err := config.Decode(os.Args[1]); err != nil {
Expand Down
18 changes: 18 additions & 0 deletions src/Backend/opti-sql-go/operators/Expr/expr.go
Original file line number Diff line number Diff line change
Expand Up @@ -4,3 +4,21 @@ package Expr
// for example Column + Literal
// Column - Column
// Literal / Literal

//1. Arithmetic Expressions
// SELECT salary * 1.2, price + tax, -(discount)
//2.Alias Expressions
//SELECT name AS employee_name, age AS employee_age
//SELECT salary * 1.2 AS new_salary
//3.String Expressions
//first_name || ' ' || last_name
//UPPER(name)
//LOWER(email)
//SUBSTRING(name, 1, 3)
//4. Function calls
//ABS(x)
//ROUND(salary, 2)
//LENGTH(name)
//COALESCE(a, b)
//5. Constants
//SELECT 1, 'hello', 3.14
25 changes: 21 additions & 4 deletions src/Backend/opti-sql-go/operators/filter/filter.go
Original file line number Diff line number Diff line change
@@ -1,7 +1,24 @@
package filter

// handle Bitwise operations here as well
import (
"github.com/apache/arrow/go/v17/arrow"
"github.com/apache/arrow/go/v17/arrow/array"
)

// OR
// AND
// NOT
// FilterExpr takes in a field and column and yeildss a function that takes in an index and returns a bool indicating whether the row at that index satisfies the filter condition.
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type FilterExpr func(filed arrow.Field, col arrow.Array) func(i int) bool

// example
func ExampleFilterExpr(field arrow.Field, col arrow.Array) func(i int) bool {
{
if field.Name == "age" && col.DataType().ID() == arrow.INT32 {
return func(i int) bool {
val := col.(*array.Int32).Value(i)
return val > 30
}
}
return func(i int) bool {
return true
}
}
}
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