samples/doris-demo/java-udf-aes-demo/Readme.md

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# Compile and package
```
mvn clean package
```

At this time we can get a java-udf-demo.jar

# Register function

Register encryption function

There are two parameters here, one is the encrypted content, the other is the secret key, and the return value is a string

## Local file mode
```sql
CREATE FUNCTION ase_encryp(string,string) RETURNS string PROPERTIES (
   "file"="file:///path/work/doris.java.udf.demo/target/java-udf-demo.jar",
   "symbol"="org.apache.doris.udf.demo.AESEncrypt",
   "always_nullable"="true",
   "type"="JAVA_UDF"
);

```

## http method
```sql
CREATE FUNCTION ase_encryp(string,string) RETURNS string PROPERTIES (
   "file"="http://hostname/work/doris.java.udf.demo/java-udf-demo.jar",
   "symbol"="org.apache.doris.udf.demo.AESEncrypt",
   "always_nullable"="true",
   "type"="JAVA_UDF"
);

```
## Run function
```sql
mysql> select ase_encryp('zhangfeng','java_udf_function');
+----------------------------------------------+
| ase_encryp('zhangfeng', 'java_udf_function') |
+----------------------------------------------+
| 4442106BB8C98E74D19CEC0413467810             |
+----------------------------------------------+
1 row in set (0.76 sec)
```

## Decryption function

```sql
CREATE FUNCTION ase_decryp(string,string) RETURNS string PROPERTIES (
  "file"="file:///path/work/doris.java.udf.demo/target/java-udf-demo.jar",
  "symbol"="org.apache.doris.udf.demo.AESDecrypt",
  "always_nullable"="true",
  "type"="JAVA_UDF"
);

```
## http method
```sql
CREATE FUNCTION ase_decryp(string,string) RETURNS string PROPERTIES (
  "file"="http://hostname/work/doris.java.udf.demo/java-udf-demo.jar",
  "symbol"="org.apache.doris.udf.demo.AESDecrypt",
  "always_nullable"="true",
  "type"="JAVA_UDF"
);
```
## Run function

```sql
mysql> select ase_decryp('4442106BB8C98E74D19CEC0413467810','java_udf_function');
+---------------------------------------------------------------------+
| ase_decryp('4442106BB8C98E74D19CEC0413467810', 'java_udf_function') |
+---------------------------------------------------------------------+
| zhangfeng                                                           |
+---------------------------------------------------------------------+
1 row in set (0.02 sec)

```