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Lifecycle AOP Framework. Enabling describe enhanced State Diagram with Java language, and processing relational Lifecycle constraints(including: state validations, transitions validations), concurrency, lifecycle callbacks, lifecycle events implicitely with Lifecycle Engine. This engine can be used by class load time (Java Instrumentation) or compile time (Lifecycle-StaticWeaver-maven-plugin).

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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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 * Copyright (c) 2013-2020 Madz. All rights reserved.
 * 
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License"). You
 * may not use this file except in compliance with the License. You can
 * obtain a copy of the License at
 * https://raw.github.com/zhongdj/Lifecycle/master/License.txt
 * . See the License for the specific
 * language governing permissions and limitations under the License.
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 * file and include the License file at packager/legal/LICENSE.txt.
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package net.imadz.lifecycle.meta.builder.impl.helpers;

import java.lang.reflect.Method;
import java.util.ArrayList;

import net.imadz.lifecycle.annotations.Event;
import net.imadz.lifecycle.meta.type.EventMetadata;
import net.imadz.util.MethodScanCallback;
import net.imadz.util.StringUtil;
import net.imadz.utils.Null;

public final class EventMethodScanner implements MethodScanCallback {

    private final ArrayList eventMethodList = new ArrayList();
    private final EventMetadata event;

    public EventMethodScanner(final EventMetadata event) {
        this.event = event;
    }

    @Override
    public boolean onMethodFound(Method method) {
        if (method.isBridge()) return false;
        final Event eventAnno = method.getAnnotation(Event.class);
        if ( null == eventAnno ) {
            return false;
        }
        final Class eventKey = eventAnno.value();
        if ( matchedEventPrimaryKey(eventKey, event.getPrimaryKey()) ) {
            eventMethodList.add(method);
        } else if ( matchedEventName(eventKey, method.getName(), event.getDottedPath().getName()) ) {
            eventMethodList.add(method);
        }
        return false;
    }

    private boolean matchedEventName(final Class eventKey, String methodName, final String eventName) {
        return isDefaultStyle(eventKey) && StringUtil.toUppercaseFirstCharacter(methodName).equals(eventName);
    }

    private boolean matchedEventPrimaryKey(final Class eventKey, Object primaryKey) {
        return !isDefaultStyle(eventKey) && eventKey.equals(primaryKey);
    }

    public Method[] getEventMethods() {
        return eventMethodList.toArray(new Method[0]);
    }

    private boolean isDefaultStyle(final Class eventKey) {
        return Null.class == eventKey;
    }
}