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import java.util.Arrays;

import org.apache.flink.api.common.RuntimeExecutionMode;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;

/**
 * Flink Streaming Dataflow (source -> map operator -> sink)
 * The code is translated into a graph of tasks, as shown here - https://ci.apache.org/projects/flink/flink-docs-release-1.11/learn-flink/#parallel-dataflows
 */
public class HelloWorldFlink {

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class DefinitionGenerator extends JvmModelGenerator {

    override protected _internalDoGenerate(EObject obj, IFileSystemAccess fsa) {
        generateSchema(obj as Definition, fsa)
        generateDotNetCore(obj as Definition, fsa)
    }

    def void generateSchema(Definition definition, IFileSystemAccess fsa) {
        fsa.generateFile(
            definition.name + ".sql", //

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  https://wiki.eclipse.org/Equinox/p2/FAQ#Why_are_my_uninstalled_bundles_being_reloaded.21.3F

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@Override
XPrimaryExpression returns xbase::XExpression:
	super |
	XRepeatExpression;

XRepeatExpression returns xbase::XExpression:
	{XRepeatExpression} 'repeat' numTimes=INT 'times' expression=XExpression;
  
  ------------------------------------------------------------------------
  

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https://github.com/eclipse/xtext-core/blob/master/org.eclipse.xtext/src/org/eclipse/xtext/documentation/impl/MultiLineCommentDocumentationProvider.java

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ERROR: out of shared memory
HINT: You might need to increase max_locks_per_transaction.

# Solution
1. Open /data/postgresql.conf
2. set max_locks_per_transaction = 1024
3. Save and Restart postgresql.

# Restarting Postgresql
1. Winkey + R

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eLang - https://github.com/vorburger/eLang
ptolemy - https://github.com/hallvard/ptolemy
raas4emf - https://github.com/patins1/raas4emf
sm - https://github.com/djnemeth/sm
kortargyalo-MDSD-2016 - https://github.com/ftsrg-mdsd/kortargyalo-MDSD-2016/tree/ee27d3e56095b4e253be869dd166366a2eb4d50f
emfacade - https://github.com/hallvard/emfacade
xklaim - https://github.com/LorenzoBettini/xklaim

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How to - list all the files in a commit?

https://stackoverflow.com/questions/424071/how-to-list-all-the-files-in-a-commit

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RPackage:
    'pkg' name=QualifedName
    importDec=ImportDeclaration?;
ImportDec:
    'imports' '{'imports+=Import*'}';
Import:
    importedNamespace=QNWildcard;
    
Problems with the above grammar: 1) You have to overwrite `ImportedNamespaceAwareLocalScopeProvider#internalGetImportedNamespaceResolvers()`, and in that you have to write special handling code to deal with the `ImportDec` (PS code below), 2) In real world projects, you'll see 1000's of models files created, which means equal number of `ImportDec` are created in the memory. It increases the memory requirement, and also increases the work of the garbage collector. 

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List<QuerySpecification> queries = new ArrayList<>();

ICompilationUnit compilationUnit = (ICompilationUnit) ((IStructuredSelection) currentSelection).getFirstElement();
for (IJavaElement javaElement : compilationUnit.getChildren()) {
  if (javaElement instanceof SourceType) {
    IField[] fields = ((SourceType) javaElement).getFields();
    for (IJavaElement field : fields) {
      queries.add(createQuery(field));
    }
  }