69 lines
2.1 KiB
Java
69 lines
2.1 KiB
Java
package net.tomatentum.cutin;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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import java.security.InvalidParameterException;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.List;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import net.tomatentum.cutin.util.ReflectionUtil;
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public abstract class ReflectedMethod<I extends Object> {
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private Logger logger = LoggerFactory.getLogger(getClass());
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protected Method method;
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protected Object containingObject;
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protected ReflectedMethod(Method method, Object containingObject) {
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if (!Arrays.asList(containingObject.getClass().getDeclaredMethods()).contains(method))
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throw new InvalidParameterException("Method does not apply to specified handler");
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this.method = method;
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this.containingObject = containingObject;
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}
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public abstract Object getParameter(Object context, int index);
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public abstract I identifier();
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public Object run(Object context) {
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method.setAccessible(true);
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try {
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return method.invoke(containingObject, getParameters(context));
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}catch (IllegalAccessException | InvocationTargetException ex) {
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logger.error("ReflectedMethod failed to run", ex);
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return null;
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}
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}
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public Method method() {
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return this.method;
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}
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public Object containingObject() {
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return this.containingObject;
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}
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private Object[] getParameters(Object context) {
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int parameterCount = method.getParameterCount();
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List<Object> parameters = new ArrayList<>();
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for (int i = 0; i < parameterCount; i++) {
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Object parameter;
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if (i == 0) {
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parameter = context;
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}else
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parameter = getParameter(context, i-1);
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logger.trace("Found parameter {}={} for method {}", parameter != null ? parameter.getClass().toString() : " ", parameter, ReflectionUtil.getFullMethodName(method));
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parameters.add(parameter);
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}
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return parameters.toArray();
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}
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}
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