Re: Escape default value on CREATE TABLE

[Matthew Broadhead]

have you tried setDefaultString?
also this might be the source code here 
https://apache.googlesource.com/openjpa/+/295576ffb0080106de70cc4caf23ab38d59cf56a/openjpa-jdbc/src/main/java/org/apache/openjpa/jdbc/schema/Column.java

On 13/06/18 12:51, Yves PIEL wrote:
Hello Matthew,

Thanks for your answer.

My use case is really to generate SQL queries programmatically, as my
example shows, not from java entities.

Regards,
Yves

On 13 June 2018 at 12:18, Matthew Broadhead <matthew.broadh...@nbmlaw.co.uk>
wrote:

i don't know your use case but i generate the tables automatically from
the java entities by setting the SynchroniseMappings property in
persistence.xml, e.g.
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.1"
     xmlns="http://xmlns.jcp.org/xml/ns/persistence";
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
     xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence
http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd";>
     <persistence-unit name="myDb">
         <jta-data-source>myDb</jta-data-source>
         <class>com.example.entities.jpa.Entity1</class>
         <class>com.example.entities.jpa.Entity2</class>
         <properties>
             <property name="openjpa.jdbc.SynchronizeMappings"
                 value="buildSchema(ForeignKeys=true)" />
         </properties>
     </persistence-unit>
</persistence>

an example entity might be:
package com.example.entities.jpa;

import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Version;

@Entity
public class Entity1 implements Serializable {
     private static final long serialVersionUID = 1L;

     @Id
     private Long id;

     @Version
     private Long version;

     @Column(length = 255)
     private String name;

     ...getters setters
}

and you could just set the default when you initialise the Entity? like
Entity1 entity1 = new Entity1();
entity1.setName("O,K");


On 12/06/18 15:21, Yves PIEL wrote:

Hi,

I try to use JPA to generate CREATE TABLE statements.All works fine but
default values of VARCHAR.

For example, I add a VARCHAR column with default value with :

DBIdentifier name = DBIdentifier.newColumn("na-me");
Column cName = table.addColumn(name);
cName.setType(Types.VARCHAR);
cName.setNotNull(true);
cName.setSize(255);
cName.setDefault("O,K");

And the generated code is:

DB => CREATE TABLE "My-schema".MaTable (id1 INTEGER NOT NULL, id2
VARCHAR(500) NOT NULL, "na-me" VARCHAR(255) DEFAULT O,K NOT NULL, âge
TINYINT DEFAULT 20, salary DECIMAL, CONSTRAINT idkeys PRIMARY KEY (id1,
id2))


'O,K' will corrupt my SQL query. How can I force the escape of default
values ?

Regards,
Yves