Package com.sap.cloud.sdk.datamodel.odata.utility

Class LegacyClassScanner

java.lang.Object

com.sap.cloud.sdk.datamodel.odata.utility.LegacyClassScanner

@Beta
public class LegacyClassScanner
extends Object

Helper class that enables finding the correct order of parameters for get-by-key and function/actions. Used only INTERNALLY by the SDK and IS NOT intended for public usage.

Field Summary

Fields

Modifier and Type	Field	Description
static final LegacyClassScanner	DISABLED	Enables a LegacyClassScanner where parameter reordering is skipped

Constructor Summary

Constructors

Constructor	Description
LegacyClassScanner(File outputDir)

Method Summary

Modifier and Type	Method	Description
<ParameterT> List<List<ParameterT>>	determineArgumentsForConstructor(String className, Iterable<ParameterT> currentArguments, Function<ParameterT,String> argumentNameLookup, int numSkipArguments)	Determine a list of argument-sets for a constructor.
<ParameterT> List<List<ParameterT>>	determineArgumentsForMethod(String className, String methodName, Iterable<ParameterT> currentArguments, Function<ParameterT,String> argumentNameLookup)	Determine a list of argument-sets for a named method.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

DISABLED

public static final LegacyClassScanner DISABLED

Enables a LegacyClassScanner where parameter reordering is skipped

Constructor Details

LegacyClassScanner

public LegacyClassScanner(@Nullable
 File outputDir)

Method Details

determineArgumentsForMethod

@Nonnull
public <ParameterT> List<List<ParameterT>> determineArgumentsForMethod(@Nonnull
 String className,
 @Nonnull
 String methodName,
 @Nonnull
 Iterable<ParameterT> currentArguments,
 @Nonnull
 Function<ParameterT,String> argumentNameLookup)

Determine a list of argument-sets for a named method. It reads the existing argument sets for this method from the class file present in the output directory and combines the new, incoming argument set.

Example:
Let's assume legacy method "foo" exists in the old class. It is defined twice with arguments "a" and "a,b,c" respectively. Now the generator reads a service specification where a method "foo" is referenced with arguments "a,x,c,b". The result of this method will be: "a", "a,b,c", "a,b,c,x".

Type Parameters:

ParameterT - Currently either EntityPropertyModel or FunctionImportParameterModel or UnboundOperationParameterModel

Parameters:

className - The fully qualified class name (including package), used to parse the legacy class file from output directory.

methodName - The method name to determine multiple argument-sets for.

currentArguments - A single set of arguments coming from generator input.

argumentNameLookup - A function to get the parameter name.

Returns:

The ordered combination of argument-sets for a specific method.

determineArgumentsForConstructor

@Nonnull
public <ParameterT> List<List<ParameterT>> determineArgumentsForConstructor(@Nonnull
 String className,
 @Nonnull
 Iterable<ParameterT> currentArguments,
 @Nonnull
 Function<ParameterT,String> argumentNameLookup,
 int numSkipArguments)

Determine a list of argument-sets for a constructor. It reads the existing argument sets for constructors of the class present in the output directory and combines the new, incoming argument set.

Example:
Let's assume there's a legacy class "Bar". It has two constructors with arguments "a" and "a,b,c" respectively. Now the generator reads a service specification where a resulting class "Bar" is required with constructor arguments "a,x,c,b". The result of this method will be: "a", "a,b,c", "a,b,c,x".

Type Parameters:

ParameterT - Currently EntityPropertyModel

Parameters:

className - The fully qualified class name (including package), used to parse the legacy class file from output directory.

currentArguments - A single set of arguments coming from generator input.

argumentNameLookup - A function to get the parameter name.

numSkipArguments - The number of arguments to skip in the parameters passed

Returns:

The ordered combination of argument-sets for a specific constructor.