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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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/*
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 * Copyright (c) 2013-2020 Madz. All rights reserved.
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 * 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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package net.imadz.lifecycle.meta.builder.impl.helpers;

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

import net.imadz.lifecycle.meta.builder.impl.RelationObjectBuilderImpl;
import net.imadz.lifecycle.meta.object.RelationObject;
import net.imadz.lifecycle.meta.object.StateMachineObject;
import net.imadz.lifecycle.meta.type.RelationMetadata;
import net.imadz.lifecycle.meta.type.StateMachineMetadata;
import net.imadz.verification.VerificationException;

public class RelationObjectConfigure {

    private final ArrayList extendedRelationMetadata;
    private final Class klass;
    private final StateMachineObject parent;

    public RelationObjectConfigure(final Class klass, final ArrayList extendedRelationMetadata, final StateMachineObject parent) {
        super();
        this.extendedRelationMetadata = extendedRelationMetadata;
        this.klass = klass;
        this.parent = parent;
    }

    public RelationObject configure(final StateMachineMetadata relatedStateMachine, final Object relationKey, final AccessibleObject obj)
            throws VerificationException {
        final RelationMetadata relationMetadata = relatedStateMachine.getRelationMetadata(relationKey);
        if ( extendedRelationMetadata.contains(relationMetadata) ) return null;
        if ( relationMetadata.hasSuper() ) {
            markExtendedRelationMetadata(extendedRelationMetadata, relationMetadata);
        }
        return createRelationObject(obj, relationMetadata);
    }

    private RelationObject createRelationObject(final AccessibleObject obj, final RelationMetadata relationMetadata) throws VerificationException {
        if ( obj instanceof Field ) {
            return new RelationObjectBuilderImpl(parent, (Field) obj, relationMetadata).build(klass, parent).getMetaData();
        } else if ( obj instanceof Method ) {
            return new RelationObjectBuilderImpl(parent, (Method) obj, relationMetadata).build(klass, parent).getMetaData();
        } else {
            throw new UnsupportedOperationException("For now, we only support Field and Method when configuring relation object in class " + getClass());
        }
    }

    private void markExtendedRelationMetadata(final ArrayList extendedRelationMetadata, final RelationMetadata relationMetadata) {
        extendedRelationMetadata.add(relationMetadata);
        if ( relationMetadata.hasSuper() ) {
            markExtendedRelationMetadata(extendedRelationMetadata, relationMetadata.getSuper());
        }
    }
}