自定义注解与MYSQL

无聊之作,可以提意见,但别嘲笑啊

package bean;

import java.sql.Date;

import annotationK.annotation.Column;
import annotationK.annotation.Comment;
import annotationK.annotation.Entity;
import annotationK.annotation.GeneratedValue;
import annotationK.annotation.GenerationType;
import annotationK.annotation.Id;
import annotationK.annotation.Table;
import annotationK.annotation.Temporal;
import annotationK.annotation.TemporalType;

@Entity
@Table(name="base_user")
public class User {
    
    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    @Column(name="uid")
    @Comment(value="编码")
    private Long id;
    @Comment(value="姓名")
    @Column(name="core_name",length=50)
    private String name;
    @Comment(value="密码")
    @Column(unique=true,length=50)
    private String password;
    @Column(length=100)
    @Comment(value="邮箱")
    private String email;
    @Temporal(TemporalType.DATE)
    @Comment(value="生日")
    private Date birthday;
    @Temporal(TemporalType.TIME)
    private Date birthday2;
    @Temporal(TemporalType.TIMESTAMP)
    private Date birthday3;
    private Date birthday4;
    private Integer nums;
    private int num2;
    private Long num3;
    private long num4;
    private Double num5;
    private double num6;
    private Float  num15;
    private float num16;
     private Byte  num8;
    private byte num7;
    private Short num9;
      private short num10;
    private char num11;
    private Character num12;
    private Boolean num13;
    private boolean num14;
    @Temporal(TemporalType.DATE)
    private java.sql.Date num17;
    @Temporal(TemporalType.TIME)
    private java.sql.Date num18;
    @Temporal(TemporalType.TIMESTAMP)
    private java.sql.Date num19;
    private java.sql.Date num20;
    
    
}

AnnotationEnum

package annotationK.annotation;

import java.util.HashMap;
import java.util.Map;

/**
 * 注解枚举
 * */
public enum AnnotationEnum {
    TABLE("Table"),
    ID("Id"),
    COLUMN("Column"),
    UNIQUECONSTRAINT("UniqueConstraint"),
    GENERATEDVALUE("GeneratedValue"),
    GENERICGENERATOR("GenericGenerator"),
    PARAMETER("Parameter"),
    TEMPORAL("Temporal"),
    COMMENT("Comment"),
    TRANSIENT("Transient"),
    ENTITY("Entity");
    
    public final String annotationName;
    private static Map<String, String> annotations = new HashMap<String, String>();
    
    static{
        for (AnnotationEnum annotation : AnnotationEnum.values()) {
            annotations.put(annotation.toString(), annotation.annotationName);
        }
    }
    private AnnotationEnum(String annotationName) {
        this.annotationName = annotationName;
    }
    
    public static String forType(String annotation)  {
        String annotationName = annotations.get(annotation);
        return annotationName;
    }

}

Column

package annotationK.annotation;

import java.lang.annotation.Target;
import java.lang.annotation.Retention;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

/**
 * 复制 javax.Persistence 下面的colums 注解
 * @since Java Persistence 1.0
 */
@Target({METHOD, FIELD})
@Retention(RUNTIME)
public @interface Column {


    String name() default "";//映射列名

    boolean unique() default false; //映射列上的值不能相同

    FetchType type() default FetchType.EAGER;//加载策略
    
    boolean nullable() default true;  //是否允许为空

    boolean insertable() default true;

    boolean updatable() default true;

    String columnType() default "";//对应列类型
    
    String defaultVaule() default "";//默认值

    String table() default "";

    int length() default 255;//长度

    int precision() default 0;

    int scale() default 0;
}

Comment

package annotationK.annotation;

import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

import java.lang.annotation.Retention;
import java.lang.annotation.Target;

/**
 * 注释注解
 * */
@Target({METHOD, FIELD})
@Retention(RUNTIME)
public @interface Comment {

    /**
     * 注释类容
     * */
    String value();
}

Entity

package annotationK.annotation;

import java.lang.annotation.Target;
import java.lang.annotation.Retention;
import java.lang.annotation.Documented;
import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

/**
 * Specifies that the class is an entity. This annotation is applied to the
 * entity class.
 *
 * @since Java Persistence 1.0
 * 复制 javax.Persistence 下面的Entity 注解
 */
@Documented
@Target(TYPE)
@Retention(RUNTIME)
public @interface Entity {

    String name() default "";
}

FetchType
package annotationK.annotation;

/**
 * 加载策略
 * */
public enum FetchType {

    /** Defines that data can be lazily fetched. 
     * 延迟
     *   */
    LAZY, 

    /** Defines that data must be eagerly fetched. 
     * 即刻
     * */
    EAGER
}

GeneratedValue

package annotationK.annotation;

import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
import static annotationK.annotation.GenerationType.AUTO;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
/**
 */
@Target({METHOD, FIELD})
@Retention(RUNTIME)
public @interface GeneratedValue {

    GenerationType strategy() default AUTO;

    String generator() default "";
}

GenerationType

package annotationK.annotation;

/**
 * Defines the types of primary key generation strategies.
 *
 * @see GeneratedValue
 *
 * @since Java Persistence 1.0
 *  
 *  JPA提供的四种标准用法为TABLE,SEQUENCE,IDENTITY,AUTO. 
    TABLE：使用一个特定的数据库表格来保存主键。 
    SEQUENCE：根据底层数据库的序列来生成主键，条件是数据库支持序列。 
    IDENTITY：主键由数据库自动生成（主要是自动增长型） 
    AUTO：主键由程序控
 */
 
public enum GenerationType {

    TABLE,

    SEQUENCE,

    IDENTITY,

    AUTO
    

}

GenericGenerator

package annotationK.annotation;

import static java.lang.annotation.ElementType.*;
import java.lang.annotation.Retention;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
import java.lang.annotation.Target;

/**
 * @author Emmanuel Bernard
 */
@Target({PACKAGE, TYPE, METHOD, FIELD})
@Retention(RUNTIME)
public @interface GenericGenerator {

    String name();

    String strategy();

    Parameter[] parameters() default {};
}

package annotationK.annotation;

import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
/**
 * 自定义主键注解
 * */
@Target({METHOD, FIELD})
@Retention(RUNTIME)
public @interface Id {

}

MysqlToJavaTypeEnum

package annotationK.annotation;

import java.util.HashMap;
import java.util.Map;

/**
 * 数据类型枚举 java类型,mysql数据类型,数据列默认长度,参考Hibernae jap规范
 * */
public enum MysqlToJavaTypeEnum {
    
    LANG_LONG("bigint","java.lang.Long",20),
    LANG_INTEGER("int","java.lang.Integer",11),
    LANG_SHORT("smallint","java.lang.Short",6),
    LANG_BYTE("tinyint","java.lang.Byte",4),
    LANG_DOUBLE("double","java.lang.Double",0),
    LANG_FLOAT("float","java.lang.Float",0),
    LANG_BOOLEAN("enum","java.lang.Boolean",1),
    LANG_STRING("varchar","java.lang.String",255),
    LANG_CHAR("char","java.lang.Character",1),
    OBJECT_LONG("bigint","long",20),
    OBJECT_INT("int","int",11),
    OBJECT_SHORT("smallint","short",6),
    OBJECT_byte("tinyint","byte",4),
    OBJECT_DOUBLE("double","double",0),
    OBJECT_FLOAT("float","float",0),
    OBJECT_CHAR("char","char",1),
    OBJECT_BOOLEAN("enum","boolean",1),
    UTIL_DATE("datetime","java.util.Date",0),
    SQL_DATE("date","java.sql.Date",0);
    
    public final String jdbcType;
    public final String javaType;
    public final Integer defaultlength;
    private static Map<String, String> annotations = new HashMap<String, String>();
    
    static{
        for (MysqlToJavaTypeEnum type : MysqlToJavaTypeEnum.values()) {
            annotations.put(type.toString(), type.javaType);
        }
    }
    
    private MysqlToJavaTypeEnum(String jdbcType, String javaType, Integer defaultlength) {
        this.jdbcType = jdbcType;
        this.javaType = javaType;
        this.defaultlength = defaultlength;
    }

    public static String forType(String annotation)  {
        String annotationName = annotations.get(annotation);
        return annotationName;
    }

}

Parameter

package annotationK.annotation;

import java.lang.annotation.Retention;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
import java.lang.annotation.Target;

@Target({})
@Retention(RUNTIME)
public @interface Parameter {
    String name();

    String value();
}

Table

package annotationK.annotation;

import java.lang.annotation.Target;
import java.lang.annotation.Retention;
import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

/**
 * <pre>
 *    Example:
 *
 *    &#064;Entity
 *    &#064;Table(name="CUST", schema="RECORDS")
 *    public class Customer { ... }
 * </pre>
 * 拷贝 javax.persistence 的table注解
 * @since Java Persistence 1.0
 */


@Target(TYPE)
@Retention(RUNTIME)
public @interface Table {

    String name() default "";


    String catalog() default "";


    String schema() default "";


    UniqueConstraint[] uniqueConstraints() default { };
}

Transient

package annotationK.annotation;

import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

import java.lang.annotation.Retention;
import java.lang.annotation.Target;

/**
 * 非映射注解
 * */
@Target({METHOD, FIELD})
@Retention(RUNTIME)
public @interface Transient {
        
}

UniqueConstraint

package annotationK.annotation;

import java.lang.annotation.Target;
import java.lang.annotation.Retention;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

@Target({ })
@Retention(RUNTIME)
public @interface UniqueConstraint {

    String name() default "";

    String[] columnNames();
}

package annotationK.util;

import java.lang.annotation.Annotation;
import java.lang.reflect.Field;

/**
 * 实体bean 字段注解封装
 * */
public class ColumnBean {
    
    private Field field;//反射字段
    private String fieldName;//映射字段名称
    private String fieldTypeName; //映射字段数据类型名称
    private Class<?> fileType;//映射字段数据类型
    private String columnName;//对应数据库表列名称
    private Integer columnLength;//对应字段数据列长度
    private Integer leve=1;//字段级别 默认为1  (1)普通列  (2)主键列  (3)带自增主键列 
    private String columnType;//对应列类型
    private boolean unique=false;//对应列数据库表中的值能否相同
    private boolean nullableBoo=true; //是否允许Null值
    private Annotation [] annotations;//该字段上所有的注解
    private String comment="";//注释
    private boolean fetchType=false;//是否延迟加载 默认false是不延迟 ,true是延迟
    private String defaultValue="";//默认值
    
    //---------------------少用----------------------
    private boolean insertable;
    private boolean updatableBoo;
    private String tableName;
    private int precision;
    private int scale;
    
    public ColumnBean() {
        super();
    }
    public ColumnBean(Field field) {
        super();
        this.field = field;
    }
}

package annotationK.util;

import java.util.List;

import annotationK.annotation.UniqueConstraint;

/**
 * 封装实体bean头部注解信息
 * */
public class EntityBean<T> {
    
    private Class<T> clazz;//解析的类
    private boolean entityBO=false; //是否为实体
    private boolean tableBO=false; //是否对应table
    private String entityName;//jpa 映射 对象名称
    private String tableName; //对应表名 默认为类名 
    private String catalog=""; //?
    private String schema="";//?
    private UniqueConstraint [] uniqueConstraints;//?
    private List<ColumnBean> columnBean;//所有字段结果集
    
    
}

AnnotationReflectionUtil

package annotationK.util;

import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.List;


import org.junit.Test;

import annotationK.annotation.AnnotationEnum;
import annotationK.annotation.Column;
import annotationK.annotation.Comment;
import annotationK.annotation.Entity;
import annotationK.annotation.GeneratedValue;
import annotationK.annotation.GenerationType;
import annotationK.annotation.Id;
import annotationK.annotation.Table;

/**
 *注解反射帮助类 
 * */
public final class AnnotationReflectionUtil {
    
    @Test
    public void test()throws Exception{
    /*    EntityBean<User> entity=parserClass(User.class);
        entity=TypeUtils.reflecJdbcTypeAll(entity);
        for(ColumnBean columnBean:entity.getColumnBean()){
            System.out.println(column.getFieldName());
            System.out.println("level="+column.getLeve()+",name="+column.getColumnName()+",type="+column.getColumnType()+",length="+column.getColumnLength()+",defalutvalue="+column.getDefaultValue()+",comment="+column.getComment());
            System.out.println("--------------------------------------------------------------------");
        }*/
    }
    
    /**
     * 抛出异常 目前暂定将不属于自定义的注解,全部抛出,返回值布尔值
     * */
    private boolean putExceptionAnnotationToField(Field field){
        boolean tag=true;
        Annotation annotations []=field.getAnnotations();
        if(annotations.length>0){
            for(Annotation annotation:annotations){
                String annotationName=annotation.annotationType().getName();
                if(annotationName.contains("javax")||annotationName.contains("hibernate")||annotationName.contains("ejb3")){
                    tag=false;
                    throw new RuntimeException(field.getName()+"该字段请注入规定注解");
                }
            }
        }
        return tag;
    }
    
    /**
     * 解析实体bean并将数据封装至TableBean
     * */
    public <T> EntityBean<T> parserClass(Class<T> clazz) throws ClassNotFoundException{
        //解析头部
        EntityBean<T> entityBean=parserAnnotationClassTop(clazz);
        if(entityBean.isEntityBO()){
            Field fields []=clazz.getDeclaredFields();
            List<ColumnBean> columnList=new ArrayList<ColumnBean>();
            ColumnBean column=null;
            for(Field field:fields){
                putExceptionAnnotationToField(field);
                column=new ColumnBean(field);
                Annotation annotations []=field.getAnnotations();
                column.setAnnotations(annotations);
                column.setFieldName(field.getName());
                column.setFileType(field.getType());
                column.setFieldTypeName(field.getType().getSimpleName());
                boolean tag=true;
                if(annotations.length>0){
                    //该字段根据头部注解区分对待
                    for(Annotation annotation:annotations){
                        String annotationName=annotation.annotationType().getSimpleName();
                        if(AnnotationEnum.forType("ID").equals(annotationName)){
                            column=parserAnnotationId(column);
                        }
                        if(AnnotationEnum.forType("GENERATEDVALUE").equals(annotationName)){
                            column=parserAnnotationGeneratedValue(column);
                        }
                        if(AnnotationEnum.forType("COLUMN").equals(annotationName)){
                            column=parserAnnotationColumn(column);
                        }
                        if(AnnotationEnum.forType("TEMPORAL").equals(annotationName)){
                            column=parserAnnotationDate(column);
                        }
                        if(AnnotationEnum.forType("COMMENT").equals(annotationName)){
                            column=parserAnnotationComment(column);
                        }
                        if(AnnotationEnum.forType("TRANSIENT").equals(annotationName)){
                            tag=false;
                        }
                    }
                }else{
                    //该字段为缺省为cloumn注解类型,属于映射字段
                    column=parserAnnotationColumnNot(column);
                }
                if(tag)
                    columnList.add(column);
            }
            entityBean.setColumnBean(columnList);
        }
        return entityBean;
    }
    
    /**
     * 解决注释注解
     * */
    private ColumnBean parserAnnotationComment(ColumnBean column){
        Field field=column.getField();
        Comment comment=field.getAnnotation(Comment.class);
        String msg=comment.value();
        if(msg!=null){
            column.setComment(msg);
        }
        return column;
    }
    
    
    /**
     * 解决无注解字段处理,但是其头部有entity注解
     * */
    private ColumnBean parserAnnotationColumnNot(ColumnBean column){
        Field field=column.getField();
        column.setColumnName(field.getName());
        return column;
    }
    
    /**
     * 解析日期类注解
     * */
    private ColumnBean parserAnnotationDate(ColumnBean column){
        Field field=column.getField();
        column.setColumnName(field.getName());
        return column;
    }
    
    
    /**
     * 解析字段Column 注解
     * */
    private ColumnBean parserAnnotationColumn(ColumnBean columns){
        Field field=columns.getField();
        Column  column=field.getAnnotation(Column.class);
        if(!column.columnType().equals("")){
            columns.setColumnType(column.columnType());
        }
        columns.setDefaultValue(column.defaultVaule());
        columns.setColumnName(column.name().equals("")?field.getName():column.name());
        columns.setColumnLength(column.length());
        columns.setUnique(column.unique());
        columns.setInsertable(column.insertable());
        columns.setNullableBoo(column.nullable());
        columns.setUpdatableBoo(column.updatable());
        columns.setTableName(column.table());
        columns.setPrecision(column.precision());
        columns.setScale(column.scale());
        return columns;
    }
    
    
    /**
     * 解析主键
     * */
    private ColumnBean parserAnnotationId(ColumnBean column){
        Field field=column.getField();
        Id  id=field.getAnnotation(Id.class);
        String className=id.annotationType().getName();
        if(!className.contains("javax")||!className.contains("hibernate")){
            column.setLeve(2);
            if(column.getColumnName()==null){
                column.setColumnName(field.getName());
            }
        }
        return column;
    } 
    
    /**
     * 解析主键自增类型 strategy 主键生成规则,配合主键生成策略
     * */
    private ColumnBean parserAnnotationGeneratedValue(ColumnBean column){
        Field field=column.getField();
        GeneratedValue  generated=field.getAnnotation(GeneratedValue.class);
        //自增辅助策略
        //String generator=generated.generator().toString();
        //自增主策略
        String generatedValue=generated.strategy().toString();
        if(generatedValue==GenerationType.AUTO.toString()){
             column.setLeve(3);
         }
        return column;
    }
    
    
    /**
     * 解析头部注解
     * */
    private <T> EntityBean<T> parserAnnotationClassTop(Class<T> clazz){
        EntityBean<T> entityBean=new EntityBean<T>();
        Annotation annotations [] = clazz.getAnnotations();
        for(Annotation annotation:annotations){
            String annotationName = annotation.annotationType().getSimpleName();
            if(AnnotationEnum.forType("ENTITY").equals(annotationName)){
                String entityName=parserAnnotationEntity(clazz,annotation);
                entityBean.setEntityBO(true);
                entityBean.setEntityName(entityName);
            }
            if(AnnotationEnum.forType("TABLE").equals(annotationName)){
                String tableName=parserAnnotationTable(clazz,annotation);
                entityBean.setTableBO(true);
                entityBean.setTableName(tableName);
            }
        }
        if(entityBean.isEntityBO()&&!entityBean.isTableBO()){
            entityBean.setTableName(clazz.getSimpleName());
        }
        return entityBean;
    }
    
    
    /**
     * 解析Entity注解
     * */
    private <T> String parserAnnotationEntity(Class<T> clazz,Annotation annotation){
        String entityName="";
        Entity entity = clazz.getAnnotation(Entity.class);
        entityName = entity.name();
        if(entityName==null||entityName.equals("")){
            entityName=clazz.getSimpleName();
        }
        return entityName;
    }
    
    /**
     * 解析Table注解
     * */
    private <T> String  parserAnnotationTable(Class<T> clazz,Annotation annotation){
        String tableName="";
        Table table = clazz.getAnnotation(Table.class);
        tableName = table.name();
        if(tableName==null||tableName.equals("")){
            tableName=clazz.getSimpleName();
        }
        return tableName;
    }
}

TypeUtils

package annotationK.util;

import java.lang.reflect.Field;
import java.util.List;

import org.junit.Test;

import annotationK.annotation.MysqlToJavaTypeEnum;
import annotationK.annotation.Temporal;
import annotationK.annotation.TemporalType;
import bean.User;

/**
 * 数据类型映射帮助类
 * */
public class TypeUtils {
    
    @Test
    public void test() throws ClassNotFoundException{
        EntityBean<User> entity=new AnnotationReflectionUtil().parserClass(User.class);
        entity=TypeUtils.reflecJdbcTypeAll(entity);
        
    
    }
    
    public static <T> EntityBean<T> reflecJdbcTypeAll(EntityBean<T> entity){
        if(entity.isEntityBO()&&entity.isTableBO()){
            List<ColumnBean> columns=entity.getColumnBean();
            for(ColumnBean column:columns){
                column=reflecJdbcTypeSingle(column);
            }    
        }
        return entity;
    }
    
    /**
     * 解析某个单独 Column对象
     * */
    public static ColumnBean reflecJdbcTypeSingle(ColumnBean column){
        Class<?> clazz=column.getFileType();
        MysqlToJavaTypeEnum typeEnum []=MysqlToJavaTypeEnum.values();
        for(MysqlToJavaTypeEnum e:typeEnum){
            if(e.javaType.equals(clazz.getName())){
                if(column.getColumnType()==null){
                    column.setColumnType(e.jdbcType);
                }
                //假如没有使用任何注解,根据枚举对象中定义的长度赋值
                if(column.getAnnotations()!=null){
                    if(column.getColumnLength()==null||column.getColumnLength()==255){
                        column.setColumnLength(e.defaultlength);
                    }
                    //某些数据库类型的映射长度必须为0
                    String ctype=column.getColumnType();
                    if(ctype.equals("longtext")||ctype.equals("enum")){
                        column.setColumnLength(0);
                    }
                }else {
                    column.setColumnLength(e.defaultlength);
                }
                break;
            }
        }
      if(column.getFieldTypeName().equals("Date")){
          reflectDateType(column);
      }
        return column; 
    }
    
    /**
     * 映射日期类注解数据类型
     * */
    public static ColumnBean reflectDateType(ColumnBean column){
        //不判断判断属于哪种Date 数据类型 目前只要是 java.util.Date java.sql.Date 都相应的数据类型都 一样
        Field field=column.getField();
        Temporal tem=field.getAnnotation(Temporal.class);
        if(tem!=null){
                TemporalType temporalType=tem.value();
                if(temporalType.compareTo(TemporalType.DATE)==0){
                    column.setColumnType("date");
                }else if(temporalType.compareTo(TemporalType.TIME)==0){
                    column.setColumnType("time");
                }else{
                    column.setColumnType("datetime");
                }
        }
        
        return column;
    }
    
    
    
}

GeneralSQLUtil

package annotationK.util;


import org.junit.Test;

import bean.User;


/**
 * 生成slq帮助类
 * */
public class GeneralSQLUtil {
    
    @Test
    public void test() throws ClassNotFoundException{
        //destory();
        AnnotationReflectionUtil reflectUtil=new AnnotationReflectionUtil();
        EntityBean<User> entity=reflectUtil.parserClass(User.class);
        entity=TypeUtils.reflecJdbcTypeAll(entity);
        String result=generalSqlByEntity(entity);
        System.out.println(result);
    
    }
    
    
    public void destory(){
        String end="drop table so_order";
    }
    
    public <T> String generalSqlByEntity(EntityBean<T> entity){
        StringBuilder sb=new StringBuilder();
        sb.append("create table ").append(entity.getTableName()).append(" (").append("\n");
        for(ColumnBean column:entity.getColumnBean()){
            if(column==null){
                break;
            }
            sb.append(column.getFieldName()).append(" ").append(column.getColumnType());
            if(column.getFieldTypeName().equals("boolean")||column.getFieldTypeName().equals("Boolean")){
                sb.append(" (\'0\',\'1\',\'2\') ");
            }
            if(column.getColumnLength()!=0){
                sb.append("(").append(column.getColumnLength()).append(")");
            }
            sb.append(" ");
            if(!column.getDefaultValue().equals("")){
                sb.append("DEFAULT ").append(column.getDefaultValue());
            }
            if(column.getLeve()==2){
                sb.append(" PRIMARY KEY");
            }else if(column.getLeve()==3){
                sb.append(" PRIMARY KEY AUTO_INCREMENT");
            }
            if(!column.getComment().equals("")){
                sb.append(" comment ").append("\'").append(column.getComment()).append("\'");
            }
            sb.append(",").append("\n");
        }
        return sb.substring(0, sb.length()-2).concat(")");
    }
    
}

posted @ 2015-11-20 11:06 匹夫鹏阅读(733) 评论(0) 编辑收藏举报

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