ProvaJP.java

package org.drools.modelcompiler.builder.generator.visitor.accumulate;

import java.util.List;
import java.util.Optional;

import com.github.javaparser.StaticJavaParser;
import com.github.javaparser.ast.Node;
import com.github.javaparser.ast.expr.Expression;
import com.github.javaparser.ast.expr.MethodCallExpr;
import com.github.javaparser.printer.PrettyPrinter;
import com.github.javaparser.printer.PrettyPrinterConfiguration;
import org.drools.modelcompiler.builder.generator.DrlxParseUtil;

public class ProvaJP {

    public static void main(String[] args) {

        PrettyPrinterConfiguration prettyPrinterConfiguration = new PrettyPrinterConfiguration();

        PrettyPrinter prettyPrinter = new PrettyPrinter(prettyPrinterConfiguration);

        Expression dsl = StaticJavaParser.parseExpression("accumulate(and(" +
                                                                  "        expr(), " +
                                                                  "        bind().as().reactOn()" +
                                                                  "     ), " +
                                                                  "     accFunction())");

        System.out.println(prettyPrinter.print(dsl));
        System.out.println("-------------------------");

        MethodCallExpr input = new MethodCallExpr(null, "input");

        findBind(dsl).forEach(n -> {
            n.replace(input);

            int a = 0;
        });

        System.out.println(prettyPrinter.print(dsl));
    }

    private static List<MethodCallExpr> findBind(Expression dsl) {
        return dsl.findAll(MethodCallExpr.class, mc -> DrlxParseUtil.findRootNodeViaScope(mc)
                .filter(l -> l.isMethodCallExpr() && l.asMethodCallExpr().getNameAsString().equals("bind")).isPresent());
    }
}