Problems connecting to Postgres from Grails - postgresql

Question

I have verified that I can connect to the postgres database using a Java test program. I have also verified that I can connect using a little Grails testDB project. But when I try to run my larger project, which the same BuildConfig.groovy, it fails.
I've tried different jdbc versions (e.g., 4 rather than 41) in the postgres jar, but it didn't help.
I've been searching stackoverflow and anything else I can find to no avail (e.g., "help me stackoverflow, your my only hope").
My BuildConfig.groovy file is shown below:
grails.servlet.version = "3.0" // Change depending on target container compliance (2.5 or 3.0)
grails.project.class.dir = "target/classes"
grails.project.test.class.dir = "target/test-classes"
grails.project.test.reports.dir = "target/test-reports"
grails.project.work.dir = "target/work"
grails.project.target.level = 1.6
grails.project.source.level = 1.6
//grails.project.war.file = "target/${appName}-${appVersion}.war"
grails.project.fork = [
// configure settings for compilation JVM, note that if you alter the Groovy version forked compilation is required
// compile: [maxMemory: 256, minMemory: 64, debug: false, maxPerm: 256, daemon:true],
// configure settings for the test-app JVM, uses the daemon by default
test: [maxMemory: 768, minMemory: 64, debug: false, maxPerm: 256, daemon:true],
// configure settings for the run-app JVM
run: [maxMemory: 768, minMemory: 64, debug: false, maxPerm: 256, forkReserve:false],
// configure settings for the run-war JVM
war: [maxMemory: 768, minMemory: 64, debug: false, maxPerm: 256, forkReserve:false],
// configure settings for the Console UI JVM
console: [maxMemory: 768, minMemory: 64, debug: false, maxPerm: 256]
]
grails.project.dependency.resolver = "maven" // or ivy
grails.project.dependency.resolution = {
// inherit Grails' default dependencies
inherits("global") {
// specify dependency exclusions here; for example, uncomment this to disable ehcache:
// excludes 'ehcache'
}
log "error" // log level of Ivy resolver, either 'error', 'warn', 'info', 'debug' or 'verbose'
checksums true // Whether to verify checksums on resolve
legacyResolve false // whether to do a secondary resolve on plugin installation, not advised and here for backwards compatibility
repositories {
inherits true // Whether to inherit repository definitions from plugins
grailsPlugins()
grailsHome()
mavenLocal()
grailsCentral()
mavenCentral()
// uncomment these (or add new ones) to enable remote dependency resolution from public Maven repositories
//mavenRepo "http://repository.codehaus.org"
//mavenRepo "http://download.java.net/maven/2/"
//mavenRepo "http://repository.jboss.com/maven2/"
}
dependencies {
// specify dependencies here under either 'build', 'compile', 'runtime', 'test' or 'provided' scopes e.g.
// runtime 'mysql:mysql-connector-java:5.1.29'
compile 'org.postgresql:postgresql:9.3-1101-jdbc41'
runtime 'org.postgresql:postgresql:9.3-1101-jdbc41'
test "org.grails:grails-datastore-test-support:1.0-grails-2.4"
}
plugins {
// plugins for the build system only
build ":tomcat:7.0.55"
// plugins for the compile step
compile ":scaffolding:2.1.2"
compile ':cache:1.1.7'
compile ":asset-pipeline:1.9.6"
compile ":twitter-bootstrap:3.2.1"
// compile ":jquery-dialog:2.0.3"
// plugins needed at runtime but not for compilation
runtime ":hibernate4:4.3.5.5" // or ":hibernate:3.6.10.15"
runtime ":database-migration:1.4.0"
runtime ":jquery:1.11.1"
runtime ":twitter-bootstrap:3.2.1"
}
}
My DataSource.groovy file contains
dataSource {
pooled = true
jmxExport = true
url = "jdbc:postgresql://150.18.178.9:5432/myDB"
driverClassName = "org.postgresql.Driver"
dbCreate = "update"
username = "user"
password = "password"
dialect = net.sf.hibernate.dialect.PostgreSQLDialect
}
hibernate {
cache.use_second_level_cache = true
cache.use_query_cache = false
// cache.region.factory_class = 'net.sf.ehcache.hibernate.EhCacheRegionFactory' // Hibernate 3
cache.region.factory_class = 'org.hibernate.cache.ehcache.EhCacheRegionFactory' // Hibernate 4
singleSession = true // configure OSIV singleSession mode
}
// environment specific settings
environments {
development {
dataSource { // database dev
dbCreate = "update" // one of 'create', 'create-drop', 'update', 'validate', ''
url="jdbc:postgresql://150.18.178.9:5432/dev"
username = "user"
password = "password"
}
}
test {
dataSource {
dbCreate = "update"
url="jdbc:postgresql://150.18.178.9:5432/test"
username = "user"
password = "password"
}
}
production {
dataSource {
dbCreate = "update"
url="jdbc:postgresql://150.18.178.9:5432/myDB"
username = "user"
password = "password"
properties {
// See http://grails.org/doc/latest/guide/conf.html#dataSource for documentation
jmxEnabled = true
initialSize = 5
maxActive = 50
minIdle = 5
maxIdle = 25
maxWait = 10000
maxAge = 10 * 60000
timeBetweenEvictionRunsMillis = 5000
minEvictableIdleTimeMillis = 60000
validationQuery = "SELECT 1"
validationQueryTimeout = 3
validationInterval = 15000
testOnBorrow = true
testWhileIdle = true
testOnReturn = false
jdbcInterceptors = "ConnectionState"
defaultTransactionIsolation = java.sql.Connection.TRANSACTION_READ_COMMITTED
}
}
}
}
When I try to run my application I get:
/usr/java/latest/bin/java -Dgrails.home=/home/iank/software/grails/latest -Dbase.dir=/home/iank/IdeaProjects/nderground -Dtools.jar=/usr/java/latest/lib/tools.jar -Dgroovy.starter.conf=/home/iank/software/grails/latest/conf/groovy-starter.conf -Xmx768M -Xms768M -XX:MaxPermSize=256m -XX:PermSize=256m -javaagent:/home/iank/software/grails/latest/lib/org.springframework/springloaded/jars/springloaded-1.2.0.RELEASE.jar -noverify -Dspringloaded=profile=grails -Didea.launcher.port=7535 -Didea.launcher.bin.path=/home/iank/software/idea-IU-135.909/bin -Dfile.encoding=UTF-8 -classpath /home/iank/software/grails/latest/lib/org.codehaus.groovy/groovy-all/jars/groovy-all-2.3.6.jar:/home/iank/software/grails/latest/dist/grails-bootstrap-2.4.3.jar:/home/iank/software/idea-IU-135.909/lib/idea_rt.jar com.intellij.rt.execution.application.AppMain org.codehaus.groovy.grails.cli.support.GrailsStarter --main org.codehaus.groovy.grails.cli.GrailsScriptRunner --conf /home/iank/software/grails/latest/conf/groovy-starter.conf "run-app -plain-output"
|Loading Grails 2.4.3
|Configuring classpath
.
|Environment set to development
.................................
|Packaging Grails application
...........
|Compiling 1 source files
............................
|Running Grails application
| Error 2014-09-27 17:16:38,021 [localhost-startStop-1] ERROR context.GrailsContextLoaderListener - Error initializing the application: Error creating bean with name 'transactionManagerPostProcessor': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager': Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: object is not an instance of declaring class
Message: Error creating bean with name 'transactionManagerPostProcessor': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager': Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: object is not an instance of declaring class
Line | Method
->> 262 | run in java.util.concurrent.FutureTask
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
| 615 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^ 745 | run in java.lang.Thread
Caused by BeanCreationException: Error creating bean with name 'transactionManager': Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: object is not an instance of declaring class
->> 262 | run in java.util.concurrent.FutureTask
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
| 615 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^ 745 | run in java.lang.Thread
Caused by BeanCreationException: Error creating bean with name 'sessionFactory': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: object is not an instance of declaring class
->> 262 | run in java.util.concurrent.FutureTask
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
| 615 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^ 745 | run in java.lang.Thread
Caused by IllegalArgumentException: object is not an instance of declaring class
->> 22 | doCall in nderground.User$__clinit__closure1
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 262 | run in java.util.concurrent.FutureTask
| 1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
| 615 | run in java.util.concurrent.ThreadPoolExecutor$Worker
^ 745 | run . . . in java.lang.Thread
Error |
Forked Grails VM exited with error
|Server running. Browse to http://localhost:8080/nderground
Process finished with exit code 1
Any help would be deeply appreciated. My progress has completely stalled and I'm not sure what to do other than to try rebuilding the project piece by piece.
Many thanks...

Answer 1

By creating a Grails project that worked and slowly adding code I was able to find the problem. I had an improperly specified constraint.
class User {
String handle
String emailAddr
String salt
String password
boolean isAdmin
String toString()
{
String rslt = "$handle"
return rslt
}
static constraints = {
handle blank : false, nullable : false, unique : true
emailAddr blank : false, nullable : false, unique : true, email : true
salt blank: false, nullable: false
password blank: false, nullable: false
isAdmin false <<======= This is the problem!
}
static mapping = {
table 'users'
handle index : 'handle_Ix'
emailAddr index: 'email_ix'
isAdmin defaultValue: false
}
}
This should have been in the static mapping section:
static mapping = {
table 'users'
handle index : 'handle_Ix'
emailAddr index: 'email_ix'
isAdmin defaultValue: false <<== This is the right way to set the default
}
To put it mildly, its annoying that the error shows up as a thread creation error, without any other indication of other errors.

Answer 2

As #EElke points out in the comments, there's no indication at all that Postgres is the problem; the error that you should be looking at says Error creating bean with name 'sessionFactory' ... object is not an instance of declaring class.
My guess is that net.sf.hibernate.dialect.PostgreSQLDialect is the problem - replace that with org.hibernate.dialect.PostgreSQLDialect.
Also, delete this:
runtime 'org.postgresql:postgresql:9.3-1101-jdbc41'
since you already have
compile 'org.postgresql:postgresql:9.3-1101-jdbc41'
and runtime scope includes dependencies from compile scope.