Intellij database extension Groovy script to copy JDL Entity to clipboard.

Generate Enitity JDL.groovy

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

import java.awt.datatransfer.StringSelection
import java.awt.Toolkit
import java.awt.datatransfer.*

/*
 * How to use:
 * - right click table (you can use shift for multiple table)
 * - Scripted extension > Generate Entity JDL.groovy
 * - paste (ctrl + v) to JDL Studio https://start.jhipster.tech/jdl-studio/
 *
 * Available context bindings:
 *   SELECTION   Iterable<DasObject>
 *   PROJECT     project
 *   FILES       files helper
 */
typeMapping = [
        (~/(?i)bigint/)                   : "Long",
        (~/(?i)int/)                      : "Integer",
        (~/(?i)double|decimal|real/)      : "Double",
        (~/(?i)float/)                    : "Float",
        (~/(?i)bigdecimal/)               : "BigDecimal",
        (~/(?i)boolean/)                  : "Boolean",
        (~/(?i)datetime|timestamp/)       : "ZonedDateTime",
        (~/(?i)date/)                     : "LocalDate",
        (~/(?i)uuid/)                     : "UUID",
        (~/(?i)duration/)                 : "Duration",
        (~/(?i)blob/)                     : "Blob",
        (~/(?i)anyblob/)                  : "AnyBlob",
        (~/(?i)imageblob/)                : "ImageBlob",
        (~/(?i)textblob/)                 : "TextBlob",
        (~/(?i)instant/)                  : "Instant",
        (~/(?i)/)                         : "String"
]

jdl = ""
final Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard()
SELECTION.filter { it instanceof DasTable }.each { generate(it) }
clipboard.setContents(new StringSelection(jdl), null)

def generate(table) {
    def className = javaName(table.getName(), true)
    def fields = calcFields(table)
    jdl += generateRow(className, fields)
}

def generateRow(className, fields) {
    row = "";
    row += "entity $className {\n"
    fields.each() {
        if (it.annos != "") row += "  ${it.annos}\n"
        row += "   ${it.name} ${it.type}\n"
    }
    row += "}\n"
    row += "\npaginate $className with pagination\n"
    row += "service * with serviceClass\n"
    return row;
}

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,
                           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]
}