derby

问题 Where is Derby database stored when I create it from netbeans? How Can I combine it with the rest of my project in one folder? 回答1: Right-Click on Databases->JavaDB in the Service View and select Properties... This will open the following screen, where the location is visible and could be changed: 来源： https://stackoverflow.com/questions/9494761/where-is-derby-database-stored-when-i-create-it-from-netbeans

问题 The following is the spring config Date Source <bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource"> <property name="driverClassName" value="${rwos.dataSource.driverClassName}" /> <property name="url" value="${rwos.dataSource.url}" /> <property name="username" value="${rwos.dataSource.user}" /> <property name="password" value="${rwos.dataSource.password}" /> </bean> Entity manager config <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org

问题 The following is the spring config Date Source <bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource"> <property name="driverClassName" value="${rwos.dataSource.driverClassName}" /> <property name="url" value="${rwos.dataSource.url}" /> <property name="username" value="${rwos.dataSource.user}" /> <property name="password" value="${rwos.dataSource.password}" /> </bean> Entity manager config <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org

问题 I asked a similar question the other day but have since realized I was getting ahead of myself. I'm seeking advice on the proper way to handle the following scenario. I'm trying to SELECT the correct longitude and latitude for a given address and city, in the fastest way possible. My COORDINATES table has 25,000 rows and looks like this: I have a Java HashMap<Integer, List<String>> which contains an Integer as the key, and an ArrayList containing 2 entries, an address and city. The HashMap

问题 Apache Derby has an option to run its "Network Server" as a web application in a servlet container ( derby.war ). The problem is then how to deploy other applications that depend on derby in the same container to load after derby loads (preferable in a Tomcat container). From what I recall there is no way to control the order of web application initialization in Tomcat. Has anybody gotten derby.war to work in a multiple web application environment? 回答1: You'll probably find it easier and more

问题 I'm trying to compile this small piece of code, to help me connect to my db and retrieve some information to test it. I am using Netbeans on a Windows 7 x64 machine. This is the code: package passwordprotector; import java.sql.*; public class PasswordProtector { /** * @param args the command line arguments */ public static void main(String[] args) { String host = "jdbc:derby://localhost:1527/PasswordProtector DB"; String dbUsername = "john"; String dbPassword = "arsenal"; /*try{ Class.forName

问题 Is it possible to create table and it's name in lower case using JavaDB/Derby? To check if table exists I'm using: ResultSet rs = dbmd.getTables(null, "APP", "user_properties", null); if (!rs.next()) {/*do something*/}; But table name 'user_properties' must mach the case in catalog. 回答1: Derby follows the ANSI standard which requires unquoted identifiers to be folded to uppercase. So, the following statement: create table user_properties ( id integer not null ); will create a table with then

问题 I am trying to convert from MS Access to DerbyDB. However some varchar fields have 'special' characters, such as newlines, tabs, percent marks, foreign characters etc. I created a quick method... public String charCheck(String s) { errLog.add(1, "converting string from " + s); s.replaceAll("'", "''");//an apostrophe is escaped with an apostrophy in Derby... s.replaceAll("%", "\\%");//a percent sign s.replaceAll("\\s+n", " ");//whitespace characters (newlines and tabs etc) s.replaceAll("/", "\

问题 I'm reading through Derby documentation and following all the instructions. I've successfully installed it (extracted it to my Linux machine and set the DERBY_HOME path). I have a complete REST API project with Angular 7 front-end and Dropwizard backend. I hard coded some data in the backend, and created all the HTTP API methods I need (GET, POST, PATCH, DELETE). The application is fully functional, but now I need to implement the Embedded version of Derby into it. I have 0 experience with

问题 Good day! What is the equivalent function of Derby/Java DB to the CONCAT function of MySQL? I tried using CONCAT to Derby but it commits an error. 回答1: I believe you can concatenate two string with || Derby Built-in function reference - concatenation 来源： https://stackoverflow.com/questions/10203863/derby-concat-equivalent