derby

问题 I'm building a project with Derby DB It works just fine when I run it in Netbeans and also as jar file when I use DB as Network Client with derbyclient.jar . But the problem is I have to distribute it so I use Embedded mode of Derby DB , As I provide derby.jar . And followed the instructions Provided Here. The only deference between Embedded & Network is we have to use this DB path (short DB name path) dbPath = "jdbc:derby:Mail_Client_Ref_Fiverr"; Instead of (full with localhost and port)

问题 I'm building a project with Derby DB It works just fine when I run it in Netbeans and also as jar file when I use DB as Network Client with derbyclient.jar . But the problem is I have to distribute it so I use Embedded mode of Derby DB , As I provide derby.jar . And followed the instructions Provided Here. The only deference between Embedded & Network is we have to use this DB path (short DB name path) dbPath = "jdbc:derby:Mail_Client_Ref_Fiverr"; Instead of (full with localhost and port)

问题 i tried to switch a connection pool in GlassFish 4 from MySQL to Derby. I am using Spring-Data-JPA with JPA/Hibernate. The problem is that not all tables are created with the derby pool. The tables for entities which have at least one boolean field are not created. I found nothing in the log files. :( My applicationContext.xml: <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema

问题 I am new to JPA and was experimenting a bit in hope of figuring out the Entity lifecycle model. I expected the code below to throw an EntityExistsException. However, instead of throwing the expected exception, it just creates a new row in database table with a new primary key (incremented by one). Can anyone explain this? I suspect it might have something to do with the @GeneratedValue annotation on my ID field in combination with my autoincrementing primary key in the corresponding table.

问题 I have a database-driven application (Apache Derby). I connect to the database by a URL: jdbc:derby://localhost:1527/kcal_calc_db My database was created via NetBeans, and is in the '.netbeans-derby' folder. How can I include this database with my JAR/EXE file? 回答1: Try this related question: Distribute a database made with JavaDB with Java program Note that you'll want your database to be accessed as an Embedded database, not a Client-Server database, so you'll need to change your Connection

问题 I have a very long sql and it's size is more than 150000 byte . I tried run it in derby editor. When I want to run, editör throws this error Java class file format limit(s) exceeded: method1:e1 code length (158045 > 65535) in generated class Is there any way to increase this limit ? ps: I don't want to divide code to a few pieces. And I don't want to use temporary table. 回答1: This has been a problem for Derby over the years. See, for example, DERBY-176, DERBY-732, DERBY-766, and DERBY-1714

问题 I do not want to install a database server on target machine. It is possible that we can simply ship a jar file with the database embedded in it, and not worry about installing a database server separately? I created one application in netbeans using derby and it is working fine in my pc but when i am running on other machine it is giving me Error connecting to server localhost on port 1527 --> this error says that there is no Database running on port 1527. but i dont want that the client

问题 I want to be able to remove all data from 2 tables where the id of a user = the id given. I am using Java, Derby DB, Netbeans 7.3 Beta 2 and OS X Mountain Lion. I have two tables (sorry about the huge image): This is my statement so far: String stmt2 = "DELETE FROM APP.PERSON JOIN APP.DATAVAULT WHERE PID = ?"; PreparedStatement ps2 = Main.getPreparedStatement(stmt2); ps2 = conn.prepareStatement(stmt2); ps2.setInt(1, user.getId()); ps2.executeUpdate(); System.out.println("Deleted"); I don't

问题 I tried to set the DB schema name by schema.xml but it caused a schema name duplication in the generated SQL statement for ID generators. (Duplicate schema name in sequece generation) I read the schema is defined by the passed user at connection time. Now I would like to set the schema by this way. But I don't know how can I create a new Derby user and link it with the desired schema. Can somebody help me? Environment: NetBeans, Glassfish, Derby I have found this: CALL SYSCS_UTIL.SYSCS_CREATE

问题 I generated a maven project with the quickstart archetype. So I obtained the following project structure: |-- src | |-- main | | |-- java | | |-- resources | |-- test | | |-- java | | |-- resources |-- pom.xml I modified the "pom.xml" file : <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com