IDEA Generate pojo(data first)基于 spring data jpa - code
2024-09-25 09:02:37
基于 idea 的 pojo生成
右侧菜单栏 Database->New( + 图标)->Data source-> mysql(根据自己的数据源选择)
使用:
代码如下: POJOs.groovy
import com.intellij.database.model.DasTable
import com.intellij.database.model.ObjectKind
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.sephiroth.jpademo.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 && it.getKind() == ObjectKind.TABLE }.each { generate(it, dir) }
} def generate(table, dir) {
def className = javaName(table.getName(), true)
def fields = calcFields(table)
new File(dir, "E_"+className + ".java").withPrintWriter { out -> generate(out, className, fields,table.getName()) }
} def generate(out, className, fields ,tablename) {
out.println "package $packageName"
out.println ""
out.println ""
// 引用映射
out.println "import org.hibernate.annotations.GenericGenerator;"
out.println ""
out.println "import javax.persistence.*;"
out.println "import java.io.Serializable;"
// jpa映射
out.println "@Entity"
out.println "@Table(name = \"$tablename\")"
// jpa映射end
out.println "public class E_$className implements Serializable {"
out.println ""
fields.each() {
if (it.annos != "") out.println " ${it.annos}"
// 列映射
// 主键映射
if (it.name == "id" && it.type == "String") {
out.println """ @GenericGenerator(name = "user-uuid", strategy = "uuid")
@GeneratedValue(generator = "user-uuid")
@Column(name = "id", nullable = false, length = 64)"""
}
else if(it.name == "id") {
out.println """ @GeneratedValue
@Column(name = \"$it.colname\")"""
}
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),
colname : col.getName(),
type : typeStr,
annos: """
/**
* $col.comment
*/"""]]
}
} 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]
}
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