IDEA数据库表生成POJOs脚本修改

最新推荐文章于 2023-07-13 15:20:08 发布

建华朱

最新推荐文章于 2023-07-13 15:20:08 发布

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分类专栏：随笔文章标签： intellij idea groovy jpa

本文链接：https://blog.youkuaiyun.com/qq_32607609/article/details/109178772

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本文介绍了一种使用IDEA自定义脚本生成带有JPA注解的POJOs的方法，解决了IDEA自带功能生成的POJOs包名不正确及缺少JPA注解的问题。脚本还支持根据项目生成正确的包名，并使用lombok去除冗余的getter和setter方法。

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IDEA有自带的数据库table 生成对应的POJOs的脚本，但是不是很好用，生成的包名不对，而且没有添加JPA的注解，所以自己就对着原版修改了下，希望对大家有用.

添加了@Entity、@Table、@Data三个类注解，lombok依赖自己添加。
添加了@Column 注解
包名不再写死，会根据项目生成正确的包名。
有了lombok ，去掉了get、set方法。

import com.intellij.database.model.DasTable
import com.intellij.database.util.Case
import com.intellij.database.util.DasUtil

/*
 * Available context bindings:
 *   SELECTION   Iterable<DasObject>
 *   PROJECT     project
 *   FILES       files helper
 */

//packageName = "com.sample;"
typeMapping = [
        (~/(?i)int/)                      : "Integer",
        (~/(?i)float|double|decimal|real/): "double",
        (~/(?i)datetime|timestamp/)       : "java.sql.Timestamp",
        (~/(?i)date/)                     : "java.sql.Date",
        (~/(?i)time/)                     : "java.sql.Time",
        (~/(?i)/)                         : "String"
]

FILES.chooseDirectoryAndSave("Choose directory", "Choose where to store generated files") { dir ->
    SELECTION.filter { it instanceof DasTable }.each { generate(it, dir) }
}

def generate(table, dir) {
    def className = javaName(table.getName(), true)
    def fields = calcFields(table)
    new File(dir, className + ".java").withPrintWriter { out -> generate(dir, out, className, fields, table) }
}

def generate(dir, out, className, fields, table) {
    out.println "package " + dir.getAbsolutePath().split("main.java.")[1]
            .replace("\\", ".").replaceAll("/", ".") + ";"
    out.println ""
    out.println ""
    out.println ""
    out.println "import lombok.Data;\n" +
            "\n" +
            "import javax.persistence.Column;\n" +
            "import javax.persistence.Entity;\n" +
            "import javax.persistence.Id;\n" +
            "import javax.persistence.Table;"
    out.println ""
    out.println ""
    out.println ""
    out.println ""
    out.println "@Entity"
    out.println "@Table(name = \"" + table.getName() + "\")"
    out.println "@Data"
    out.println "public class $className {"
    out.println ""
    fields.each() {

        if (it.annos != "") out.println "  ${it.annos}"
        if (it.name == "id") out.println "    @Id"
        else out.println "    @Column(name = \"" + it.colname + "\")"

        out.println "    private ${it.type} ${it.name};"
    }
    out.println ""
//    fields.each() {
//        out.println ""
//        out.println "  public ${it.type} get${it.name.capitalize()}() {"
//        out.println "    return ${it.name};"
//        out.println "  }"
//        out.println ""
//        out.println "  public void set${it.name.capitalize()}(${it.type} ${it.name}) {"
//        out.println "    this.${it.name} = ${it.name};"
//        out.println "  }"
//        out.println ""
//    }
    out.println "}"
}

def calcFields(table) {
    DasUtil.getColumns(table).reduce([]) { fields, col ->
        def spec = Case.LOWER.apply(col.getDataType().getSpecification())
        def typeStr = typeMapping.find { p, t -> p.matcher(spec).find() }.value
        fields += [[
                           name   : javaName(col.getName(), false),
                           type   : typeStr,
                           colname: col.getName(),
                           annos  : ""]]
    }
}

def javaName(str, capitalize) {
    def s = com.intellij.psi.codeStyle.NameUtil.splitNameIntoWords(str)
            .collect { Case.LOWER.apply(it).capitalize() }
            .join("")
            .replaceAll(/[^\p{javaJavaIdentifierPart}[_]]/, "_")
    capitalize || s.length() == 1 ? s : Case.LOWER.apply(s[0]) + s[1..-1]
}