io.github.nichetoolkit.mybatis.defaults.DefaultCachingTableFactory Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of mybatis-toolkit-context Show documentation

Mybatis toolkit context project for Spring Boot

The newest version!

package io.github.nichetoolkit.mybatis.defaults;

import io.github.nichetoolkit.mybatis.MybatisTable;
import io.github.nichetoolkit.mybatis.MybatisTableFactory;
import org.springframework.lang.NonNull;
import org.springframework.lang.Nullable;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

/**
 * DefaultCachingTableFactory
 * The default caching table factory class.
 * @author Cyan ([email protected])
 * @see io.github.nichetoolkit.mybatis.MybatisTableFactory
 * @since Jdk1.8
 */
public class DefaultCachingTableFactory implements MybatisTableFactory {

    /**
     * classTables
     * {@link java.util.Map} The classTables field.
     * @see java.util.Map
     */
    private final Map, MybatisTable> classTables;

    /**
     * DefaultCachingTableFactory
     * Instantiates a new default caching table factory.
     */
    public DefaultCachingTableFactory() {
        this.classTables = new ConcurrentHashMap<>();
    }


    @Override
    public boolean supports(@NonNull Class entityType) {
        return true;
    }

    @Override
    @SuppressWarnings("all")
    public MybatisTable createTable(@NonNull Class entityType, @Nullable Class identityType, @Nullable Class linkageType, @Nullable Class alertnessType, Chain chain) {
        if (this.classTables.get(entityType) == null) {
            synchronized (entityType) {
                if (this.classTables.get(entityType) == null) {
                    MybatisTable mybatisTable = chain.createTable(entityType, identityType, linkageType, alertnessType);
                    if (mybatisTable != null) {
                        this.classTables.put(entityType, mybatisTable);
                    } else {
                        return null;
                    }
                }
            }
        }
        return this.classTables.get(entityType);
    }

    @Override
    public int getOrder() {
        return Integer.MAX_VALUE;
    }
}