kandi X-RAY | DBQuery Summary
kandi X-RAY | DBQuery Summary
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Top functions reviewed by kandi - BETA
- Open a connection
- Get username
- Get password
- Get the driver
- Create the table
- Format prepared statement
- Connect to database
- Synchronized update
- Setup the database
- Set username
- Set password
- Set dbinfoInfo
- Method to select a database
- Convert ResultSet to Map
- Generate update
- Closes this connection
- Is this connection open
- Serialize model
- Parse map
- Do delete
- Insert insert
DBQuery Key Features
DBQuery Examples and Code Snippets
Community Discussions
Trending Discussions on DBQuery
QUESTION
i have this very simple script:
...ANSWER
Answered 2022-Apr-14 at 22:13The < redirection takes a filename, but you are passing it string data.
To redirect from a string, use a <<< here-string instead:
QUESTION
type User = {
name: string
email: string
}
ANSWER
Answered 2022-Feb-11 at 00:13I'll reply by myself.
QUESTION
I'm trying to use repository pattern with TypeScript
Now I have base.repository that implements all of the functions that I need, I made it a generic type, and I wanna pass the model while injecting it in constructor, but for some reason, while passing the value, I have undefined state of the particular model, what am I doing wrong?
In the console.log() it shows me that the model is undefined while in file register.service.ts it shows me also undefined, but I passed it as generic.
register.service.ts
ANSWER
Answered 2022-Feb-10 at 13:08I have added inject tokens in each service before repository Injection
Now the code looks as follows
QUESTION
I am building a Xamarin Forms application and using Sqlite-net. I want to run a delete query that deletes all records that have a field in a list so something like below:
...ANSWER
Answered 2021-Dec-23 at 22:41try this
QUESTION
i've been struggling a lot with fastify-passport library, mainly because it seems that nobody uses it and there aren't any good examples or issues related to it
anyhow, i have some routes defined like this:
...ANSWER
Answered 2021-Dec-06 at 14:34answering my own question:
when you add a callback like that in the preValidation
QUESTION
I'm currently trying to use a db (.accdb-file) in my vbscript.
my function from a .vbs-file that's executed by a hta-file:
...ANSWER
Answered 2021-Nov-16 at 06:55You are missing that you wish to handle several data types, and to take care of reserved words for field names. So, for example, you would need:
QUESTION
I have a v3 Azure Function that runs fine locally, but after it's deployed I see the following exception related to a missing Entity Framework file:
2021-10-18T23:37:07.588 [Error] Executed 'MyFunction' (Failed, Duration=1807ms)
Autofac.Core.DependencyResolutionException : An exception was thrown while activating
Autofac.Core.DependencyResolutionException : An exception was thrown while invoking the constructor 'Void .ctor()' on type 'Repository'.
System.IO.FileNotFoundException : Could not find file 'D:\home\site\wwwroot\bin\DAOEntities.edmx'.at System.IO.FileStream.ValidateFileHandle(SafeFileHandle fileHandle)
at System.IO.FileStream.CreateFileOpenHandle(FileMode mode,FileShare share,FileOptions options)
at System.IO.FileStream..ctor(String path,FileMode mode,FileAccess access,FileShare share,Int32 bufferSize,FileOptions options)
at System.IO.FileStream..ctor(String path,FileMode mode,FileAccess access,FileShare share,Int32 bufferSize,Boolean useAsync)
at System.Xml.XmlWriterSettings.CreateWriter(String outputFileName)
at System.Xml.XmlWriter.Create(String outputFileName,XmlWriterSettings settings)
at System.Data.Entity.Infrastructure.DefaultDbModelStore.Save(Type contextType,DbModel model)
at System.Data.Entity.Internal.LazyInternalContext.CreateModel(LazyInternalContext internalContext)
at System.Data.Entity.Internal.RetryLazy2.GetValue(TInput input) at System.Data.Entity.Internal.LazyInternalContext.InitializeContext() at System.Data.Entity.Internal.InternalContext.Initialize() at System.Data.Entity.Internal.InternalContext.GetEntitySetAndBaseTypeForType(Type entityType) at System.Data.Entity.Internal.Linq.InternalSet1.Initialize()
at System.Data.Entity.Internal.Linq.InternalSet1.AsNoTracking() at System.Data.Entity.Infrastructure.DbQuery1.AsNoTracking()
at lambda_method(Closure ,Object[] )
at Autofac.Core.Activators.Reflection.ConstructorParameterBinding.Instantiate()
End of inner exception
at Autofac.Core.Activators.Reflection.ConstructorParameterBinding.Instantiate()
at Autofac.Core.Activators.Reflection.ReflectionActivator.ActivateInstance(IComponentContext context,IEnumerable1 parameters) at Autofac.Core.Resolving.InstanceLookup.CreateInstance(IEnumerable1 parameters)
End of inner exception
at Autofac.Core.Resolving.InstanceLookup.CreateInstance(IEnumerable1 parameters) at Autofac.Core.Resolving.InstanceLookup.Execute() at Autofac.Core.Resolving.ResolveOperation.GetOrCreateInstance(ISharingLifetimeScope currentOperationScope,ResolveRequest request) at Autofac.Core.Resolving.ResolveOperation.Execute(ResolveRequest request) at Autofac.Core.Lifetime.LifetimeScope.ResolveComponent(ResolveRequest request) at Autofac.ResolutionExtensions.TryResolveService(IComponentContext context,Service service,IEnumerable1 parameters,Object& instance)
at Autofac.ResolutionExtensions.ResolveService(IComponentContext context,Service service,IEnumerable1 parameters) at Autofac.ResolutionExtensions.Resolve[TService](IComponentContext context,IEnumerable1 parameters)
at Autofac.ResolutionExtensions.Resolve[TService](IComponentContext context)
at Autofac.Extensions.DependencyInjection.AzureFunctions.ScopedJobActivator.CreateInstance[T](ILifetimeScope scope)
at Autofac.Extensions.DependencyInjection.AzureFunctions.ScopedJobActivator.CreateInstance[T](IFunctionInstanceEx functionInstance)
at Microsoft.Azure.WebJobs.Host.Executors.ActivatorInstanceFactory1.<>c__DisplayClass1_1.<.ctor>b__0(IFunctionInstanceEx i) at C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\ActivatorInstanceFactory.cs : 20 at Microsoft.Azure.WebJobs.Host.Executors.ActivatorInstanceFactory1.Create(IFunctionInstanceEx functionInstance) at C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\ActivatorInstanceFactory.cs : 26
at Microsoft.Azure.WebJobs.Host.Executors.FunctionInvoker`2.CreateInstance(IFunctionInstanceEx functionInstance) at C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionInvoker.cs : 44
at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.ParameterHelper.Initialize() at C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionExecutor.cs : 776
at async Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.TryExecuteAsync(IFunctionInstance functionInstance,CancellationToken cancellationToken) at C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionExecutor.cs : 101
I've noticed locally that the .edmx file isn't generated when the project is built -- instead it's created when I start running the project using func start.
Could this be a permissions issue (e.g. with the function not having write access to the storage blob)?
...ANSWER
Answered 2021-Oct-21 at 00:46I've found that the root issue is related to the Run From Package setting.
This prevents the function app from generating the .edmx file, so the solution is to either disable Run From Package or to deploy the function with the .edmx file pre-included.
From MSDN: Run From Package makes wwwroot read-only, so you will receive an error when writing files to this directory. (https://docs.microsoft.com/en-us/azure/azure-functions/run-functions-from-deployment-package)
QUESTION
I had a very sophisticated class that performed DB queries, the problem is it wasnt using try-with-resource statements so i had to .close() manually. To be safer, I tried to re-design it with try-with-resource. My question is if these resources will close properly given how I'm referencing them outside the objects containing those resources. For example, this class DBQuery i use to create queries and resources related to those queries
...ANSWER
Answered 2021-Sep-03 at 01:43Short answers:
- Yes, the
PreparedStatements are all closed. - Not directly problems, but easier ways.
Here my BUTs:
- The name
execPreparedStatementis totally misleading, as it is not (in DB terms) executing anything, just creating thePreparedStatement. A better name would becreatePreparedStatementor - lol -preparePreparedStatement - Why do you call
DB.getCon().rollback();? I do not think this will lead to someplace good... - the way you use
DBQueryat the moment, it will only bring pain. Basicall this is just a container that saves additional infos (_stmt+_rs) which makes it SEVERELY state and sequence dependent, prone to hit you with lots of NPEs -
- so the actions you call on
DBQueryyou could simply also call on thePreparedStatement, reducing complexity and taking away a few pitfalls
- so the actions you call on
-
- so either completely remove
DBQuery
- so either completely remove
-
- or remodel the
DBQuery
- or remodel the
-
-
- to be
Closeable/AutoCloseable,
- to be
-
-
-
- add some checks to the other functions,
-
-
-
- create the
PreparedStatementright away (CTOR, query string as CTOR parameter),
- create the
-
-
-
- keep it private, do not expose it
-
-
-
- use it inside
getRecordSet,
- use it inside
-
-
-
- do not store any other references unless you REALLY need them
-
-
-
- and in the
closemethod close the PS,
- and in the
-
- Your
loadFailed = true;andif (loadFailed) return;seems overly convoluted and error-prone. Why not directly callreturn;right where you currently haveloadFailed = true;lines? - I would - personal preference - put those 2 whole try-catch blocks into their own methods, signaling failure with a boolean or something => more methods with each less code and better variable scope (for example no re-use of
loadFailed, but better re-usability of the two methods) - You actually do NOT need the inner try-resource on the
ResultSets, but it's good if you (can) keep em. Just be careful there, as closing aResultSetmight have an impact on its creatorPreparedStatement. So if you test it (in a situation where you re-use thePreparedStatement, that what it's actually made for) and get a 'closed' Exception when reusing thePreparedStatement, then you remove the try-resource blocks around theResultSets.
QUESTION
I want to bind variable number parameters using call_user_func_array in this way(please read comments at the code):
ANSWER
Answered 2021-Jul-05 at 14:04call_user_func_array expects a callable as the first argument, and $stmt->bind_param is the wrong format for this. [$stmt, 'bind_param'] would be the proper callable
Source: https://www.php.net/manual/en/language.types.callable.php
A method of an instantiated object is passed as an array containing an object at index 0 and the method name at index 1. Accessing protected and private methods from within a class is allowed.
QUESTION
Hello Fuse Developers
I am a beginner in fuse world m , now I try to develop JDBC project and I have issue I hope you can help me to resolve it
1- I added Oracle JDBC Driver to EAP Fuse Server
2- I created datasource & tested it
3- Camel context
...ANSWER
Answered 2021-Jun-30 at 13:11commons-dbcp and the DriverManagerDataSource is not really needed, as you have already configured the DataSource to be managed by the EAP container. So you can replace the dataSource bean with a JNDI lookup like this.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install DBQuery
You can use DBQuery like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the DBQuery component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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