Package com.cockroachlabs.data.ddl

Class ComputedColumnHelper

java.lang.Object

com.cockroachlabs.data.ddl.ComputedColumnHelper

public final class ComputedColumnHelper
extends Object

Generates CockroachDB DDL for computed columns annotated with @ComputedColumn.

Method Summary

Modifier and Type	Method	Description
static List<String>	generateDDL(String tableName, Class<?> entityClass)	Generate ALTER TABLE ADD COLUMN ... AS (expr) STORED DDL for all @ComputedColumn-annotated fields.
static void	validate(Class<?> entityClass)	Validate that all @ComputedColumn annotations on the given class use stored = true.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

generateDDL

public static List<String> generateDDL(String tableName,
 Class<?> entityClass)

Generate ALTER TABLE ADD COLUMN ... AS (expr) STORED DDL for all @ComputedColumn-annotated fields.

Parameters:

tableName - the SQL table name

entityClass - the JPA entity class to scan

Returns:

list of DDL statements (may be empty)

Throws:

IllegalArgumentException - if any field has stored = false

validate

public static void validate(Class<?> entityClass)

Validate that all @ComputedColumn annotations on the given class use stored = true.

Throws:

IllegalArgumentException - if any field has stored = false