For my desktop application I need to change SQLite database connection in runtime (actually it is just "Open file" action).
Datasource is configured using Spring-JDBC.
1) Extend SingleConnectionDataSource to be able to change JDBC URL:
public class ChangeableSingleConnectionDataSource extends SingleConnectionDataSource {
public void updateUrl(String filePath) {
setUrl("jdbc:sqlite:" + filePath);
resetConnection();
}
}
2) Define dataSource in context.xml
<bean id="dataSource" class="package.ChangeableSingleConnectionDataSource" destroy-method="destroy">
<property name="driverClassName" value="org.sqlite.JDBC"/>
<property name="url" value="jdbc:sqlite:"/>
<property name="suppressClose" value="true"/>
</bean>
3) When you need to open a new database file just call
dataSource.updateUrl(newFile.getAbsolutePath());
Related
I am trying to use Spring's ReloadableResourceBundleMessageSource for LocalValidatorFactoryBean so that when I update an error message it should reflect without requiring the server to be restarted. I am using Spring 4.1.4, hibernate-validator 4.3.2.Final.
Below are the code details -
context.xml -
<mvc:annotation-driven validator="validator" />
<bean id="messageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
<property name="basenames">
<list>
<value>file:../conf/fileapplication</value> <!-- Messages here will override the below properties file-->
<value>/WEB-INF/application</value>
</list>
</property>
<property name="cacheSeconds" value="10"></property> <!-- Will check for refresh every 10 seconds -->
</bean>
<bean name="validator"
class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
<property name="validationMessageSource">
<ref bean="messageSource"/>
</property>
</bean>
Model -
import org.hibernate.validator.constraints.NotBlank;
public class InputForm {
#NotBlank ( message = "{required.string.blank}")
String requiredString;
Controller -
#RequestMapping(value = "/check/string", method = RequestMethod.POST)
public String checkString(
#ModelAttribute("formModel") #Valid InputForm inputForm ,
BindingResult result, Model model, HttpServletResponse response,
HttpServletRequest request) {
if (result.hasErrors()) {
model.addAttribute("formModel", inputForm);
return "userInput";
}
// Do some backend validation with String
result.reject("string.not.valid",
"String is Invalid");
model.addAttribute("formModel", inputForm);
return "userInput";
}
application.properties (in /WEB_INF/ folder)
required.string.blank=Please enter the required string.
string.not.valid=Please enter a valid string.
fileapplication.properties (in /conf/ folder. Will override above file)
required.string.blank=You did not enter the required string. #Does not reflect when I change here
string.not.valid=You did not enter a valid string. #Reflects when I change here
Now the problem I am facing is, when I update "string.not.valid" in fileapplication.properties it reflects at runtime and I see the updated message. But when I update "required.string.blank" in fileapplication.properties it does not reflect at runtime.
Note that the overriding part is working fine for both messages upon application start up. But the "reloading" part is not working fine for "required.string.blank".
This is what I figured out based on my research - We need to create our own MessageInterpolator and add it as dependency to the validator instead of message source. Because when we add a messageSource as dependency, it is cached by default by the validator and any message reloads spring does won't take effect in the validator's cached instance of messageSource.
Below are the details:
In context.xml, add the custom MessageInterpolator as dependency to LocalValidatorFactoryBean instead of messageSource:
<mvc:annotation-driven validator="validator" />
<bean id="messageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
<property name="basenames">
<list>
<value>file:../conf/fileapplication</value> <!-- Messages here will override the below properties file-->
<value>/WEB-INF/application</value>
</list>
</property>
<property name="cacheSeconds" value="10"></property> <!-- Will check for refresh every 10 seconds -->
</bean>
<bean name="validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
<property name="messageInterpolator">
<ref bean="messageInterpolator"/>
</property>
</bean>
<bean name="messageInterpolator"
class="com.my.org.support.MyCustomResourceBundleMessageInterpolator">
<constructor-arg ref="messageSource" />
</bean>
Create your custom MessageInterpolator by extending Hibernate's org.hibernate.validator.messageinterpolation.ResourceBundleMessageInterpolator.
public class MyCustomResourceBundleMessageInterpolator extends
ResourceBundleMessageInterpolator {
public MyCustomResourceBundleMessageInterpolator(MessageSource messageSource)
{
// Passing false for the second argument
// in the super() constructor avoids the messages being cached.
super(new MessageSourceResourceBundleLocator(messageSource), false);
}
}
Model, Controller and properties file can be same as in the question.
below is my JNDI lookup for the Datasource
<bean id="datasource" class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="jndiName" value="java:comp/env/jdbc/intdb" />
</bean>
and flyway bean config is
<bean id="flyway" class="org.flywaydb.core.Flyway" init-method="migrate">
<property name="dataSource" ref="datasource" />
</bean>
i am getting below exception, but if i replace JNDI lookup with all the properties in the bean it works fine,
Caused by: org.flywaydb.core.api.FlywayException: Error while
determining database product name
at org.flywaydb.core.internal.dbsupport.DbSupportFactory.getDatabaseProductName(DbSupportFactory.java:139)
at org.flywaydb.core.internal.dbsupport.DbSupportFactory.createDbSupport(DbSupportFactory.java:59)
at org.flywaydb.core.Flyway.execute(Flyway.java:1147)
at org.flywaydb.core.Flyway.migrate(Flyway.java:811)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeCustomInitMethod(AbstractAutowireCapableBeanFactory.java:1581)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1522)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1452)
... 26 more
Caused by: java.sql.SQLException: Unsupported feature
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:179)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:269)
at oracle.jdbc.dbaccess.DBError.throwUnsupportedFeatureSqlException(DBError.java:689)
at oracle.jdbc.OracleDatabaseMetaData.getDatabaseMajorVersion(OracleDatabaseMetaData.java:4442)
at org.flywaydb.core.internal.dbsupport.DbSupportFactory.getDatabaseProductName(DbSupportFactory.java:134)
I have got similar, working configuration in my project. In spring context XML I have got:
<bean id="migrationDataSource" class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="jndiName" value="jdbc/myTestDb"/>
</bean>
<bean id="dbMigrationManager" class="test.version.DbMigrationManager" init-method="updateDatabaseSchema">
<constructor-arg name="migrationDataSource" ref="migrationDataSource"/>
</bean>
I am wrapping data source by constructor argument in DbMigrationManager. It looks like this:
package test.version;
import org.flywaydb.core.Flyway;
import javax.sql.DataSource;
public class DbMigrationManager {
private final DataSource dataSource;
public DbMigrationManager(DataSource migrationDataSource) {
this.dataSource = migrationDataSource;
}
public void updateDatabaseSchema() {
Flyway flyway = new Flyway();
flyway.setDataSource(dataSource);
flyway.migrate();
}
}
Also I am using Flyway 3.0 version in gradle like this:
compile group: 'org.flywaydb', name: 'flyway-core', version: '3.0'
If that do not help then maybe your problem is database specific. Like in this thread:
Exception against Oracle DB: "Error while determining database product name: Unsupported feature"
Or you are using some older, buggy version of Flyway.
I am using Spring MVC and Tiles.
When I try to use spring prefix "redirect:" for the redirection I get a servlet exception
- "Could not resolve view...".
Controller
RequestMapping("/SUPPORT.lz")
public String generateSupportView(HttpServletRequest request)
{
String url="http://"+request.getServerName()+":"+request.getServerPort()+"/APP";
AuthenticatedUser user = getUser();
/*
* Check if a user has the role for the page he is trying to access. If
* not redirect him to default page (home page).
*/
if (user.getRoles() != null && !user.getRoles().contains(new Role(0, Role.RoleType.SUPPORT)))
{
return "redirect:"+url;
}
return "support.tiles";
}
dispatcher-servlet.xml
<bean id="tilesViewResolver"
class="org.springframework.web.servlet.view.UrlBasedViewResolver"
p:order="1"
p:viewNames="*.tiles"
p:viewClass="org.springframework.web.servlet.view.tiles2.TilesView"/>
<bean id="nontilesViewResolver"
class="org.springframework.web.servlet.view.XmlViewResolver"
p:order="2"
p:location="/WEB-INF/app-nontiles-views.xml"/>
<bean id="tilesConfigurer"
class="org.springframework.web.servlet.view.tiles2.TilesConfigurer"
p:definitions="/WEB-INF/app-tiles.xml"/>
<bean id="messageSource"
class="org.springframework.context.support.ResourceBundleMessageSource"
p:basename="i18n"/>
Solution-
I added internal view resolver in disaptacher servlet.xml and issue got resolved.
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver"
p:order="3">
</bean>
I've inherited a project and am trying to get a set of integration tests running against an in-memory h2 database. In order for them to pass some tables, relationships and reference data needs creating.
I can see the problem in that the script referenced in RUNSCRIPT is being executed multiple times and therefore generating Index "XXX_IDX" already exists errors and other violations. So is there a way to force the script to only be run once or do I need a external database? It seems that the script is run on every connection which I assume is by design.
properties file
my.datasource.url=jdbc:h2:mem:my_db;DB_CLOSE_DELAY=-1;MODE=Oracle;MVCC=TRUE;INIT=RUNSCRIPT FROM 'classpath:/create-tables-and-ref-data.sql'
XML config
<bean id="myDataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="url" value="${my.datasource.url}"/>
<!-- other properties for username, password etc... -->
</bean>
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="myDataSource"/>
</bean>
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="myDataSource"/>
</bean>
<tx:annotation-driven transaction-manager="transactionManager"/>
many Java classes in the following pattern
#Component
public class SomethingDAOImpl implements SomethingDAO {
#Autowired
public SomethingDAOImpl(JdbcTemplate jdbcTemplate) {
this.jdbcTemplate = jdbcTemplate;
}
}
#Component
public class SomethingElseDAOImpl implements SomethingElseDAO {
#Autowired
public SomethingElseDAOImpl(JdbcTemplate jdbcTemplate) {
this.jdbcTemplate = jdbcTemplate;
}
}
With the default bean scope being singleton I thought this would just work, but I guess i'm missing something. Also, if I switch to an real Oracle instance that already has the tables and reference data set-up, the tests all pass.
In many cases, it is possible to write the SQL script so that no exceptions are thrown:
create table if not exists test(id int, name varchar(255));
create index if not exists test_idx on test(name);
I ended up using an alternative approach, as I could not write the SQL in a way that could be reapplied without error.
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.2.xsd">
<jdbc:initialize-database data-source="myDataSource" enabled="true" ignore-failures="ALL">
<jdbc:script location="classpath:create-and-alter-tables-first-then-add-test-data.sql" />
</jdbc:initialize-database>
</beans>
which is executed once at context initialization.
Note: other namespaces and beans omitted for brevity.
Hi I used Internal resource view resolver and my structure of jsp are like
jsp/adm, jsp/icon, jsp/iload, like
and my annotation based controller will return string value based on condition
my problem is jsp uder sub-folder is not resoled but it is under jsp folder is working
could any one please help me in this
he is my code:`
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>
my controller code is
#RequestMapping("/icrl")
public String search() throws Exception
{
setMenuName(CommonConstants.ICRL);
return "pgiCRL";
}
#RequestMapping("/searchCodes")
public String searchCodes() throws Exception
{
String key=getSearchKey();
String query=getQuery();
Map<String, Object> searchKeys = new HashMap<String, Object>();
ArrayList<String> list=new ArrayList<String>();
if(query!=null||!query.isEmpty()){
searchKeys.put(CommonConstants.DIAGICD9, getDiaICD9());
searchKeys.put(CommonConstants.DIAGICD10, getDiaICD10());
searchKeys.put(CommonConstants.DIAGNOSIS, getDiagnosis());
searchKeys.put(CommonConstants.PROCEDURE, getProcedure());
searchKeys.put(CommonConstants.SURGICAL, getSurgical());
searchKeys.put(CommonConstants.SURGICAL9, getSurICD9());
searchKeys.put(CommonConstants.SURGICAL10, getSurICD10());
searchKeys.put(CommonConstants.REVENUE, getRevenue());
list= (ArrayList<String>) iCRLService.getSearchCodeList(query,searchKeys);
}
setSuggestions(list);
return CommonConstants.SUCCESS;
}
my view is depending on condition it may be success page and failure page so i need to fix the return value in controller because that is dynamic.
Thanks in advance
You need to define the subfolder name in the returning string value.
For Example, if your page "pgiCRL" is in admin subfolder then return "admin/pgiCRL".