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CallGraphFrom for Java

Displays calls made from a specified method, showing the call graph outbound from the source method.

Overview

This query identifies all method calls made within the body of a named method, producing an outbound call graph. Given a source method name, it reports each call site and the callee, which is useful for understanding method dependencies and call chains.

The query accepts method names via an external predicate (sourceFunction).

Use Cases

This query is primarily used for:

  • Mapping outbound dependencies of a specific method
  • Understanding what a method calls and in what order
  • Analyzing call chains for refactoring or security review

Example

The following Java code demonstrates outbound calls from sourceMethod:

void helper1() {}
void helper2() { helper1(); }

void sourceMethod() {  // Source method for analysis
    helper1();
    helper2();
}

Running with sourceFunction = "sourceMethod" produces results showing each call site with the message pattern Call from `sourceMethod` to `helper1.

Output Format

The query is a @kind problem query producing rows of:

  • select call, "Call from `source` to `callee`"

References