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Handle numeric type in cdc and snapshot (#161)
* Handle numeric type in cdc and snapshot
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,56 @@ | ||
| // Copyright © 2024 Meroxa, Inc. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package types | ||
|
|
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| import ( | ||
| "github.com/jackc/pgx/v5/pgtype" | ||
| ) | ||
|
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| type NumericFormatter struct{} | ||
|
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| // Format coerces `pgtype.Numeric` to int or double depending on the exponent. | ||
| // Returns error when value is invalid. | ||
| func (NumericFormatter) Format(num pgtype.Numeric) (any, error) { | ||
| // N.B. The numeric type in pgx is represented by two ints. | ||
| // When the type in Postgres is defined as `NUMERIC(10)' the scale is assumed to be 0. | ||
| // However, pgx may represent the number as two ints e.g. 1200 -> (int=12,exp=2) = 12*10^2. as well | ||
| // as a type with zero exponent, e.g. 121 -> (int=121,exp=0). | ||
| // Thus, a Numeric type with positive or zero exponent is assumed to be an integer. | ||
| if num.Exp >= 0 { | ||
| i8v, err := num.Int64Value() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| v, err := i8v.Value() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
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| return v, nil | ||
| } | ||
|
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| f8v, err := num.Float64Value() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
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| v, err := f8v.Value() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| return v, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,26 @@ | ||
| // Copyright © 2022 Meroxa, Inc. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
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| package types | ||
|
|
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| import ( | ||
| "time" | ||
| ) | ||
|
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| type TimeFormatter struct{} | ||
|
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| // Format coerces `time.Time` to a string representation in UTC tz. | ||
| func (n TimeFormatter) Format(t time.Time) (any, error) { | ||
| return t.UTC().String(), nil | ||
| } |
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