Add API to get the array of method parameters given the qualified class name and the method signature.

Signed-off-by: Rahul Krishna <[email protected]>

Author: rahlk

src/analysis/java/JavaAnalysis.ts

@@ -248,4 +248,18 @@ export class JavaAnalysis {
       (method) => method.signature === methodName
     ) ?? (() => { throw new Error(`Method ${methodName} not found in class ${qualifiedName}.`); })();
   }
+
+  /**
+   * Get all the method parameters in a specific method within a specific class by its qualified name.
+   * @param {string} qualifiedName - The qualified name of the class to retrieve
+   * @param {string} methodName - The name of the method to retrieve
+   * @returns {Promise<Array<types.JCallableParameterType>>} A promise that resolves to an array of {@link JCallableParameterType} objects
+   * @throws {Error} If the class or method is not found in the application.
+   * 
+   * @notes This method retrieves all the parameters of a specific method from the application by its qualified name
+   * and method name. If the method is found, it returns an array of {@link JCallableParameter} objects representing
+   */
+  public async getMethodParameters(qualifiedName: string, methodName: string): Promise<Array<types.JCallableParameterType>> {
+    return (await this.getMethodByQualifiedName(qualifiedName, methodName)).parameters ?? [];
+  }
 }

test/unit/analysis/java/JavaAnalysis.test.ts

@@ -1,4 +1,4 @@
-import { JCallable, JType } from "../../../../src/models/java/";
+import { JCallable, JCallableParameter, JType } from "../../../../src/models/java/";
 import { daytraderJavaAnalysis } from "../../../conftest";
 import { expect, test } from "bun:test";
 
@@ -53,4 +53,15 @@ test("Must get a specific method in a specific class in the application", async
     "com.ibm.websphere.samples.daytrader.impl.direct.TradeDirect", "publishQuotePriceChange(QuoteDataBean, BigDecimal, BigDecimal, double)");
 
   expect(async () => JCallable.parse(method)).not.toThrow();
+});
+
+test("Must get parameters of a specific method in a specific class in the application", async () => {
+  const parameters = await daytraderJavaAnalysis.getMethodParameters(
+    "com.ibm.websphere.samples.daytrader.impl.direct.TradeDirect", "publishQuotePriceChange(QuoteDataBean, BigDecimal, BigDecimal, double)");
+
+  expect(parameters).toBeDefined();
+  expect(parameters.length).toBeGreaterThan(0);
+  parameters.forEach(param => {
+    expect(async () => JCallableParameter.parse(param)).not.toThrow();
+  });
 });