cn.schoolwow.quickdao.domain.database.ddl.IndexField Maven / Gradle / Ivy

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package cn.schoolwow.quickdao.domain.database.ddl;

import cn.schoolwow.quickdao.annotation.IndexType;

import java.io.*;
import java.util.ArrayList;
import java.util.List;

public class IndexField implements Serializable, Cloneable {
    /**
     * 表名
     */
    public String tableName;

    /**
     * 索引类型
     */
    public transient IndexType indexType;

    /**
     * 索引名称
     */
    public String indexName;

    /**
     * 索引方法
     */
    public String using;

    /**
     * 索引注释
     */
    public String comment;

    /**
     * 索引字段
     */
    public List columns = new ArrayList<>();

    /**
     * 复制拷贝transient字段
     */
    public void copyTransientField(IndexField target) {
        this.indexType = target.indexType;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        IndexField that = (IndexField) o;

        if (indexName != null ? !indexName.equals(that.indexName) : that.indexName != null) return false;
        return columns != null ? columns.equals(that.columns) : that.columns == null;
    }

    @Override
    public int hashCode() {
        int result = indexName != null ? indexName.hashCode() : 0;
        result = 31 * result + (columns != null ? columns.hashCode() : 0);
        return result;
    }

    @Override
    public IndexField clone() {
        ByteArrayInputStream bais = null;
        try (ByteArrayOutputStream baos = new ByteArrayOutputStream()) {
            ObjectOutputStream oos = new ObjectOutputStream(baos);
            oos.writeObject(this);
            oos.close();

            bais = new ByteArrayInputStream(baos.toByteArray());
            ObjectInputStream ois = new ObjectInputStream(bais);
            IndexField indexField = (IndexField) ois.readObject();
            indexField.copyTransientField(this);
            bais.close();
            return indexField;
        } catch (IOException | ClassNotFoundException e) {
            e.printStackTrace();
        } finally {
            if (null != bais) {
                try {
                    bais.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return null;
    }

    @Override
    public String toString() {
        return "\n{\n" +
                "表名:" + tableName + "\n"
                + "索引类型:" + indexType + "\n"
                + "索引名称:" + indexName + "\n"
                + "索引方法:" + using + "\n"
                + "索引注释:" + comment + "\n"
                + "索引字段:" + columns + "\n"
                + "}\n";
    }
}