IDEA数据库生成Entity 带注释, 默认值

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.xxx.xxx.entity;"
typeMapping = [
        (~/(?i)int/)                      : "long",
        (~/(?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 tableName = table.getName()
    def className = javaName(tableName, true)
    def fields = calcFields(table)
    // 指定编码, 处理中文注释的问题
    new File(dir, className + ".java").withPrintWriter("utf-8") { out -> generate(out, className, fields, tableName) }
}

def generate(out, className, fields, tableName) {
    out.println "package $packageName"
    out.println ""
    out.println ""
    out.println "import lombok.Data;"
    out.println "import javax.persistence.*;"
    out.println "import java.io.Serializable;"
    out.println "import java.sql.Timestamp;"
    out.println ""
    out.println ""
    out.println "@Data"
    out.println "@Entity"
    out.println "@Table(name="$tableName")"
    out.println "public class $className implements Serializable {"
    out.println ""
    fields.each() {
        if (it.annos != "") out.println "  ${it.annos}"
        if (it.name == "id") {
            out.println "  @Id"
            if (it.type != "String") {
                out.println "    @GeneratedValue(strategy = GenerationType.IDENTITY)"
            }
        }
        if(it.name == "entry_date" || it.name == "entryDate"){
            // default value
            out.println "    private ${it.type} ${it.name} = new Timestamp(System.currentTimeMillis());"
        } else{
            if(it.default != null){
                if(it.comment != null){
                    out.println "    private ${it.type} ${it.name} = ${it.default}; // ${it.comment}"
                }else{
                    out.println "    private ${it.type} ${it.name} = ${it.default};"
                }
            }else{
                if(it.comment != null){
                    out.println "    private ${it.type} ${it.name}; // ${it.comment}"
                }else{
                    out.println "    private ${it.type} ${it.name};"
                }
            }
        }
    }

// 使用Data装饰器, 就不需要这个了
    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 : col.getName(), // 不对字段名做任何转换 javaName(col.getName(), false),
                           type : typeStr,
                           comment : col.getComment(), // 注释
                           default : col.getDefault(), // 默认值
                           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]
}