Groovy Programming Examples

Groovy JsonOutput

groovy

import groovy.json.JsonOutput 
class Example {
   static void main(String[] args) {

      def output = JsonOutput.toJson([name: 'John', ID: 1])
      println(output);  
   }
}

Groovy Implicit Single Parameter

groovy

class Example {
   static void main(String[] args) {

      def clos = {println "Hello ${it}"};
      clos.call("World");
   } 
}

Groovy Total is an additional Instance method

groovy

class Student {
   int StudentID;
   String StudentName;
	
   int Marks1;
   int Marks2;
   int Marks3;
	
   int Total() {
      return Marks1+Marks2+Marks3;
   }
	
   static void main(String[] args) {

      Student st = new Student();
      st.StudentID = 1;
      st.StudentName="Joe";
		
      st.Marks1 = 10;
      st.Marks2 = 20;
      st.Marks3 = 30;
		
      println(st.Total());
   }
}

Groovy Finally Block

groovy

class Example {
   static void main(String[] args) {

      try {
         def arr = new int[3];
         arr[5] = 5;
      } catch(ArrayIndexOutOfBoundsException ex) {
         println("Catching the Array out of Bounds exception");
      }catch(Exception ex) {
         println("Catching the exception");
      } finally {
         println("The final block");
      }
		
      println("Let's move on after the exception");
   } 
}

Groovy Boxing and Unboxing

groovy

class Example { 
   static void main(String[] args) {

      Integer x = 5,y = 10,z = 0; 
		
      // The the values of 5,10 and 0 are boxed into Integer types 
      // The values of x and y are unboxed and the addition is performed 
      z = x+y; 
      println(z);
   }
}

ssss

groovy

/* Hello World in Groovy */
println("Hello world")

siddu

groovy

/* Hello World in Groovy */
println("Hello world")

asdf

groovy

/* Hello World in Groovy */
println("Hello world")

Execute Groovy Online

groovy

/* Hello World in Groovy */

void deployDocs(String documentGenDir, Boolean ignoreAppendingSlack = false, Boolean isNewDocs = false) {
  Closure funcDeployDocs = {
    sh("yarn run docs")
    packageDocsBuild(documentGenDir, isNewDocs)
    send("${vars.getAppName()}-docs-build.tgz", "/home/ubuntu/")
    String deployScript = makeDeployScriptForDocs(isNewDocs)
    execFileOnRemote(deployScript)
  }

  executeDeployment(funcDeployDocs, ignoreAppendingSlack)
}


void packageDocsBuild(String documentGenDir, Boolean isNewDocs = false) {

  String script = ""

  if (!isNewDocs) {
    script = [
      "appName=${getAppName()}",
      "documentGenDir=${documentGenDir}",
      '''
        homeDir=`pwd`
        # Compress the build
        cd $homeDir/$documentGenDir
        tar -zcf ../$appName-docs-build.tgz html/
      '''
    ].join("\n")
   } else {
    script = [
      "appName=${vars.getAppName()}",
      "envName=${vars.getEnvironment()}",
      "getProdDevices=${documentGenDir}",
      '''
        homeDir=`pwd`
        # Check if this is prod environment or not
        if [ $envName == "prod" ]
        then 
          mv site $homeDir/$getProdDevices
          cd $homeDir/$getProdDevices
          yarn install && yarn start
          tar -zcf ../$appName-docs-build.tgz site/
        else 
          tar -zcf $appName-docs-build.tgz site/
        fi
      '''
    ].join("\n")
  }

  retry(2) {
    sh(script)
  }
}

aaaa

groovy

dataSource {
	pooled = true
	jmxExport = true
	driverClassName = "com.mysql.jdbc.Driver"
	username = "prismdba"
	password = "password"
	password = "QAZwsxEDC123"  //product
}
hibernate {
	cache.use_second_level_cache = true
	cache.use_query_cache = false
	//cache.region.factory_class = 'org.hibernate.cache.SingletonEhCacheRegionFactory' // Hibernate 3
	cache.region.factory_class = 'org.hibernate.cache.ehcache.SingletonEhCacheRegionFactory' // Hibernate 4
	singleSession = true // configure OSIV singleSession mode
	flush.mode = 'manual' // OSIV session flush mode outside of transactional context
}

// environment specific settings
environments {
	development {
		dataSource {
			dbCreate = "update" // one of 'create', 'create-drop', 'update', 'validate', ''
			username = "prismdba"
			password = "password"
			url = "jdbc:mysql://localhost:3306/nposms?useUnicode=yes&characterEncoding=UTF-8"
		}
	}
	
	test {
		dataSource {
			dbCreate = "update"
			url = "jdbc:mysql://192.168.1.152:3306/nposms?useUnicode=yes&characterEncoding=UTF-8"
			username = "prismdba"
			password = "password"
			properties {
				// See https://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
			}
		}
	}

    klaverio {
        println "Using klaverio datasource"
        dataSource {
            dbCreate = "update"
            username = "prismdba"
            password = "QAZwsxEDC123"
            url = "jdbc:mysql://klaverio.c5zd4oxwvys7.ap-southeast-1.rds.amazonaws.com:3306/nposms?useUnicode=yes&characterEncoding=UTF-8"

            properties {
                // See https://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
            }
        }
    }

	prismbhamas { // doesn't seem to like a hyphen here
		println "Using prism-bhamas datasource"
		dataSource {
			dbCreate = "update"
			username = "prismrds"
			password = "1qazxsw2"
			url = "jdbc:mysql://prism-bhamas-rds.cucuwdqljar7.ap-southeast-1.rds.amazonaws.com:3306/nposms?useUnicode=yes&characterEncoding=UTF-8"

			properties {
				// See https://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
			}
		}
	}
}

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