noorulhaq
noorulhaq
/ BestQuotationSearchService.java
Last active
February 10, 2016 13:18
Best loan quotation problem solution using spring integration scatter-gather EIP pattern.
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| public interface BestQuotationSearchService { | |
| public Double findBestQuotation(Double loanAmount); | |
| } |
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| package fr.ddd.ch3.banking | |
| import scalaz._ | |
| import scala.util.Try | |
| import java.util.Date | |
| import scala.util.Failure | |
| import scala.util.Success | |
| import org.joda.time.DateTime._ | |
| import scala.collection.mutable.Map |
noorulhaq
/ kleisli_monad_transformer_reasoning.scala
Created
January 21, 2017 13:09
This Gist demostrate a situation where OptionT monad transformer is used to avoid extra mapping to extract account from stacked Future[Option] monands within Kleisli
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| trait AccountService { | |
| type Valid[A] = OptionT[Future, A] | |
| type AccountOperation[A] = Kleisli[Valid, AccountRepository, A] | |
| def debit(no: String, amount: Amount): AccountOperation[Account] = ??? | |
| def credit(no: String, amount: Amount): AccountOperation[Account] = ??? | |
| def transfer(from: String, to: String, amount: Amount) : AccountOperation[(Account,Account)] = for { | |
| debitAcc <- debit(from, amount) | |
| creditAcc <- credit(to, amount) |
noorulhaq
/ kleisli_reasoning.scala
Last active
January 21, 2017 13:10
This Gist demostrate a situation where Kleisli/ReaderT monad transformer is used to avoid extra mapping to extract account from Future monad.
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| trait AccountService { | |
| def debit(no: String, amount: Amount): Kleisli[Future,AccountRepository, Account] = ??? | |
| def credit(no: String, amount: Amount): ReaderT[Future,AccountRepository, Account] = ??? | |
| def transfer(from: String, to: String, amount: Amount) : ReaderT[Future,AccountRepository, (Account,Account)] = for { | |
| debitAcc <- debit(from, amount) | |
| creditAcc <- credit(to, amount) | |
| } yield (debitAcc, creditAcc) // If you do not use ReaderT/Kleisli here then you need extra mapping to extract accounts from Future | |
| } | |
| object AccountService extends AccountService |
noorulhaq
/ GitShowCommad.java
Created
March 27, 2017 12:09
This gist demostrate how you can implement "git show --name-staus <commit_id>" command using JGIT.
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| package crossover; | |
| import org.eclipse.jgit.api.DiffCommand; | |
| import org.eclipse.jgit.api.Git; | |
| import org.eclipse.jgit.diff.*; | |
| import org.eclipse.jgit.internal.storage.file.FileRepository; | |
| import org.eclipse.jgit.lib.ObjectId; | |
| import org.eclipse.jgit.lib.ObjectReader; | |
| import org.eclipse.jgit.lib.Repository; | |
| import org.eclipse.jgit.revwalk.RevCommit; |
noorulhaq
/ GitLogCommand.java
Last active
March 27, 2017 13:19
Git commit log gist, that demostrate how you can list commits from git repsoitory.
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| package crossover; | |
| import org.eclipse.jgit.api.Git; | |
| import org.eclipse.jgit.lib.Repository; | |
| import org.eclipse.jgit.revwalk.RevCommit; | |
| import org.eclipse.jgit.storage.file.FileRepositoryBuilder; | |
| import java.io.File; | |
| import java.util.Date; | |
| /** |
noorulhaq
/ GitFileDiffCommand.java
Created
March 27, 2017 16:09
JGIT emulation "git diff <rev1>..<rev2> -- path/to/file.txt" command.
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| package crossover; | |
| import org.eclipse.jgit.api.Git; | |
| import org.eclipse.jgit.diff.*; | |
| import org.eclipse.jgit.internal.storage.file.FileRepository; | |
| import org.eclipse.jgit.lib.ObjectId; | |
| import org.eclipse.jgit.lib.ObjectReader; | |
| import org.eclipse.jgit.lib.Repository; | |
| import org.eclipse.jgit.treewalk.CanonicalTreeParser; | |
| import org.eclipse.jgit.treewalk.filter.PathFilter; |
noorulhaq
/ GitDiffCommand.java
Last active
March 27, 2017 16:10
JGIT emulation of "git diff --name-status <rev1>..<rev2>" command.
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| package crossover; | |
| import org.eclipse.jgit.api.Git; | |
| import org.eclipse.jgit.diff.*; | |
| import org.eclipse.jgit.internal.storage.file.FileRepository; | |
| import org.eclipse.jgit.lib.ObjectId; | |
| import org.eclipse.jgit.lib.ObjectReader; | |
| import org.eclipse.jgit.lib.Repository; | |
| import org.eclipse.jgit.treewalk.CanonicalTreeParser; | |
| import java.util.List; |
noorulhaq
/ VCService.java
Last active
March 27, 2017 19:42
Unified VCS API for different version control systems.
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| package crossover; | |
| import java.io.Serializable; | |
| import java.util.Collection; | |
| import java.util.Date; | |
| import java.util.List; | |
| import java.util.concurrent.Future; | |
| /** | |
| * Created by Noor on 3/26/17. |
noorulhaq
/ SVNDownloadFile.java
Created
March 27, 2017 19:58
This code snippet demonstrates how to download file using SVNKit.
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| package crossover; | |
| import org.tmatesoft.svn.core.SVNProperties; | |
| import org.tmatesoft.svn.core.SVNURL; | |
| import org.tmatesoft.svn.core.auth.ISVNAuthenticationManager; | |
| import org.tmatesoft.svn.core.internal.io.dav.DAVRepositoryFactory; | |
| import org.tmatesoft.svn.core.io.SVNRepository; | |
| import org.tmatesoft.svn.core.io.SVNRepositoryFactory; | |
| import org.tmatesoft.svn.core.wc.SVNWCUtil; | |
| import java.io.ByteArrayOutputStream; |
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