本文為英文版的機器翻譯版本，如內容有任何歧義或不一致之處，概以英文版為準。

# FormatCase 類別
<a name="aws-glue-api-pyspark-transforms-FormatCase"></a>

`FormatCase` 轉換會將資料欄中的每個字串變更為指定的案例類型。

## 範例
<a name="pyspark-FormatCase-examples"></a>

```
from pyspark.context import SparkContext
from pyspark.sql import SparkSession
from awsgluedi.transforms import *

sc = SparkContext()
spark = SparkSession(sc)

datasource1 = spark.read.json("s3://${BUCKET}/json/zips/raw/data")

try:
    df_output = data_cleaning.FormatCase.apply(
        data_frame=datasource1,
        spark_context=sc,
        source_column="city",
        case_type="LOWER"
    )    
except:
    print("Unexpected Error happened ")
    raise
```

## Output
<a name="pyspark-FormatCase-output"></a>

 `FormatCase` 轉換會根據 `case\$1type="LOWER"` 參數，將 `city` 資料欄中的值轉換為小寫。產生的 `df\$1output` DataFrame 將包含原始 `datasource1` DataFrame 中的所有資料欄，但 `city` 資料欄值為小寫。

## 方法
<a name="aws-glue-api-pyspark-transforms-FormatCase-_methods"></a>
+ [\$1\$1call\$1\$1](#aws-glue-api-pyspark-transforms-FormatCase-__call__)
+ [apply](#aws-glue-api-crawler-pyspark-transforms-FormatCase-apply)
+ [name](#aws-glue-api-crawler-pyspark-transforms-FormatCase-name)
+ [describeArgs](#aws-glue-api-crawler-pyspark-transforms-FormatCase-describeArgs)
+ [describeReturn](#aws-glue-api-crawler-pyspark-transforms-FormatCase-describeReturn)
+ [describeTransform](#aws-glue-api-crawler-pyspark-transforms-FormatCase-describeTransform)
+ [describeErrors](#aws-glue-api-crawler-pyspark-transforms-FormatCase-describeErrors)
+ [describe](#aws-glue-api-crawler-pyspark-transforms-FormatCase-describe)

## \$1\$1call\$1\$1(spark\$1context, data\$1frame, source\$1column, case\$1type)
<a name="aws-glue-api-pyspark-transforms-FormatCase-__call__"></a>

`FormatCase` 轉換會將資料欄中的每個字串變更為指定的案例類型。
+ `source_column` – 現有資料欄的名稱。
+ `case_type` – 支援的案例類型為 `CAPITAL`、`LOWER`、`UPPER`、`SENTENCE`。

## apply(cls, \$1args, \$1\$1kwargs)
<a name="aws-glue-api-crawler-pyspark-transforms-FormatCase-apply"></a>

繼承自 `GlueTransform` [apply](aws-glue-api-crawler-pyspark-transforms-GlueTransform.md#aws-glue-api-crawler-pyspark-transforms-GlueTransform-apply)。

## name(cls)
<a name="aws-glue-api-crawler-pyspark-transforms-FormatCase-name"></a>

繼承自 `GlueTransform` [name](aws-glue-api-crawler-pyspark-transforms-GlueTransform.md#aws-glue-api-crawler-pyspark-transforms-GlueTransform-name)。

## describeArgs(cls)
<a name="aws-glue-api-crawler-pyspark-transforms-FormatCase-describeArgs"></a>

繼承自 `GlueTransform` [describeArgs](aws-glue-api-crawler-pyspark-transforms-GlueTransform.md#aws-glue-api-crawler-pyspark-transforms-GlueTransform-describeArgs)。

## describeReturn(cls)
<a name="aws-glue-api-crawler-pyspark-transforms-FormatCase-describeReturn"></a>

繼承自 `GlueTransform` [describeReturn](aws-glue-api-crawler-pyspark-transforms-GlueTransform.md#aws-glue-api-crawler-pyspark-transforms-GlueTransform-describeReturn)。

## describeTransform(cls)
<a name="aws-glue-api-crawler-pyspark-transforms-FormatCase-describeTransform"></a>

繼承自 `GlueTransform` [describeTransform](aws-glue-api-crawler-pyspark-transforms-GlueTransform.md#aws-glue-api-crawler-pyspark-transforms-GlueTransform-describeTransform)。

## describeErrors(cls)
<a name="aws-glue-api-crawler-pyspark-transforms-FormatCase-describeErrors"></a>

繼承自 `GlueTransform` [describeErrors](aws-glue-api-crawler-pyspark-transforms-GlueTransform.md#aws-glue-api-crawler-pyspark-transforms-GlueTransform-describeErrors)。

## describe(cls)
<a name="aws-glue-api-crawler-pyspark-transforms-FormatCase-describe"></a>

繼承自 `GlueTransform` [describe](aws-glue-api-crawler-pyspark-transforms-GlueTransform.md#aws-glue-api-crawler-pyspark-transforms-GlueTransform-describe)。