java adf, avoid unnecessary breaking changes in SDK (#19518)

Author: weidongxu-microsoft

specification/datafactory/resource-manager/readme.java.md

@@ -1,50 +1,10 @@
 ## Java
 
 These settings apply only when `--java` is specified on the command line.
-Please also specify `--azure-libraries-for-java-folder=<path to the root directory of your azure-libraries-for-java clone>`.
 
 ``` yaml $(java)
-azure-arm: true
-fluent: true
-namespace: com.microsoft.azure.management.datafactory
-license-header: MICROSOFT_MIT_NO_CODEGEN
-payload-flattening-threshold: 1
-output-folder: $(azure-libraries-for-java-folder)/azure-mgmt-datafactory
+directive:
+- from: datafactory.json
+  where: $.definitions.LinkedServiceReference.properties.type["x-ms-enum"]
+  transform: $["modelAsString"] = false
 ```
-
-# Validation
-
-
-### Java multi-api
-
-``` yaml $(java) && $(multiapi)
-batch:
-  - tag: package-2017-09-preview
-  - tag: package-2018-06
-```
-
-### Tag: package-2017-09-preview and java
-
-These settings apply only when `--tag=package-2017-09-preview --java` is specified on the command line.
-Please also specify `--azure-libraries-for-java=<path to the root directory of your azure-sdk-for-java clone>`.
-
-``` yaml $(tag) == 'package-2017-09-preview' && $(java) && $(multiapi)
-java:
-  namespace: com.microsoft.azure.management.datafactory.v2017_09_01_preview
-  output-folder: $(azure-libraries-for-java-folder)/sdk/datafactory/mgmt-v2017_09_01_preview
-regenerate-manager: true
-generate-interface: true
-```
-
-### Tag: package-2018-06 and java
-
-These settings apply only when `--tag=package-2018-06 --java` is specified on the command line.
-Please also specify `--azure-libraries-for-java=<path to the root directory of your azure-sdk-for-java clone>`.
-
-``` yaml $(tag) == 'package-2018-06' && $(java) && $(multiapi)
-java:
-  namespace: com.microsoft.azure.management.datafactory.v2018_06_01
-  output-folder: $(azure-libraries-for-java-folder)/sdk/datafactory/mgmt-v2018_06_01
-regenerate-manager: true
-generate-interface: true
-```