node-java/src-java/node/CastingUtils.java at master · yudiqing520/node-java · GitHub

36 lines (31 loc) · 1.06 KB

package node;

import java.lang.reflect.Method;

public class CastingUtils {

public static void cast(Method method, Object[] args) throws Throwable {

Class[] methodParameterTypes = method.getParameterTypes();

if (methodParameterTypes.length != args.length) {

throw new Exception("Method argument length mismatch. Expecting " + methodParameterTypes.length + " found " + args.length);

}

for (int i = 0; i < methodParameterTypes.length; i++) {

args[i] = cast(args[i], methodParameterTypes[i]);

}

public static Object cast(Object o, Class t) {

if (o == null) {

return null;

}

Class oClass = o.getClass();

if (oClass == Integer.class) {

Integer i = (Integer) o;

if (t == Double.class) {

return i.doubleValue();

}

} else if (oClass == Double.class) {

Double d = (Double) o;

if (t == Integer.class) {

return d.intValue();

}

return o;

}

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