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Common utils for BOX projects.

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package commons.box.app;

import javax.annotation.Nonnull;
import java.io.Serializable;
import java.util.Map;
import java.util.Objects;
import java.util.Set;

/**
 * 注意，此对象并不是直接的 meta bean 实例
 * 
 * 在实际应用中经常会使用 key 相等条件对 meta bean 进行封装，此类提供了一个代理，确保mb比较是以 key.equlas(key) 进行
 */
public final class MetaBeanObject implements MetaBean {
    private static final long serialVersionUID = 5430029294548034375L;
    private final String key;
    private final MetaBean mb;

    private MetaBeanObject(@Nonnull MetaBean mb) {
        this.key = mb.config() + "$" + mb.key();
        this.mb = mb;
    }

    @Override
    @Nonnull
    public Map innerMap() {
        return mb.innerMap();
    }

    @Override
    @Nonnull
    public String config() {
        return mb.config();
    }

    @Override
    public String key() {
        return mb.key();
    }

    @Override
    @Nonnull
    public String label() {
        return mb.label();
    }

    @Override
    @Nonnull
    public String name() {
        return mb.name();
    }

    @Nonnull
    public MetaBean mb() {
        return this.mb;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        MetaBeanObject that = (MetaBeanObject) o;
        return Objects.equals(key, that.key);
    }

    @Override
    public int hashCode() {
        return Objects.hash(key);
    }

    @Override
    public String toString() {
        return mb.toString();
    }

    public static MetaBeanObject from(MetaBean mb) {
        if (mb instanceof MetaBeanObject) return (MetaBeanObject) mb;
        else return (mb != null) ? new MetaBeanObject(mb) : null;
    }
}