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Call ".lock()" METHOD on domain instance.

Example.

def airport = Airport.get(10)
airport.lock() // lock for update
airport.name = "Heathrow"
airport.save()
 
or defining in your domain CLASS "version= false"
Example:
class Person {
…
static MAPPING = {
version false // here you disability OPTIMIST looking
autoTimestamp false
}
}

Call ".lock()" method on domain instance.

Example.

def airport = Airport.get(10)
airport.lock() // lock for update
airport.name = "Heathrow"
airport.save()
 
or defining in your domain class "version= false"
Example:
class Person {
…
static mapping = {
version false // here you disability optimist looking
autoTimestamp false
}
}

Locking a ROW until the CURRENT transaction is COMPLETED. This has the implication that other read OPERATIONS will be blocking until the LOCK is released.

Locking a row until the current transaction is completed. This has the implication that other read operations will be blocking until the lock is released.

optimistic LOOKING: Optimistic locking is a feature of HIBERNATE which involves storing a VERSION VALUE in a special version column in the database that is incremented after each update.

optimistic looking: Optimistic locking is a feature of Hibernate which involves storing a version value in a special version column in the database that is incremented after each update.

The DYNAMIC FINDERS in the DOMAINS CLASS.

The dynamic finders in the domains class.

It's the groovy ABILITY to add new methods or VARIABLES to classes dynamically at RUN time, and WITHOUT torching the CODE.

It's the groovy ability to add new methods or variables to classes dynamically at run time, and without torching the code.

In your DOMAIN CLASS:

STATIC TRANSIENT['cant SAVE this']

In your domain class:

static transient['cant save this']

that Config INCLUDE configuration NEEDED to RUN your application and BuildConfig include configuration to build and DEPLOY your application.

that Config include configuration needed to run your application and BuildConfig include configuration to build and deploy your application.

BuildConfing.groovy

BuildConfing.groovy

DataSource.groovy

DataSource.groovy

GRAILS create-integration-test "packpage"+"DOMAIN CLASS"

grails create-integration-test "packpage"+"domain class"

GRAILS create-unit-test "packpage"+"DOMAIN CLASS"

grails create-unit-test "packpage"+"domain class"

GRAILS -VERSION

grails -version

GRAILS test-app --RERUN

grails test-app --rerun

GRAILS test-app --INTEGRATION

grails test-app --integration

GRAILS test-app --UNIT

grails test-app --unit

GRAILS test-app

grails test-app

GRAILS stop-app

grails stop-app

GRAILS generate-all "*"

grails generate-all "*"

GRAILS generate-all "packpage"+"DOMAIN CLASS"

grails generate-all "packpage"+"domain class"

GRAILS generate-views "packpage"+"DOMAIN CLASS"

grails generate-views "packpage"+"domain class"

GRAILS generate-controller "packpage"+"DOMAIN CLASS"

grails generate-controller "packpage"+"domain class"

GRAILS -Dserver.port=9090 run-app

grails -Dserver.port=9090 run-app

GRAILS -Dgrails.env=test run-app

grails -Dgrails.env=test run-app

GRAILS WAR

grails war

DEVELOPMENT, TEST And PRODUCTION

Development, Test And Production

GRAILS create-controller "packpage" +"NAME of your DOMAIN CLASS"

grails create-controller "packpage" +"name of your domain class"

GRAILS create-DOMAIN-CLASS "packpage" +"NAME of your domain class"

grails create-domain-class "packpage" +"name of your domain class"

GRAILS run-app

grails run-app

GRAILS create-APP "the NAME of your app"

grails create-app "the name of your app"

GORM is Grails' object relational mapping (ORM) implementation. Under the hood it uses Hibernate (a very popular and flexible OPEN source ORM solution) and thanks to the dynamic nature of Groovy with its STATIC and dynamic typing, along with the convention of Grails, there is far less configuration INVOLVED in creating Grails domain classes.

GORM is Grails' object relational mapping (ORM) implementation. Under the hood it uses Hibernate (a very popular and flexible open source ORM solution) and thanks to the dynamic nature of Groovy with its static and dynamic typing, along with the convention of Grails, there is far less configuration involved in creating Grails domain classes.

means OBJECT relational mapping, A SIMPLE answer is that you wrap your tables or stored procedures in classes in your programming language, so that instead of writing SQL statements to interact with your database, you use METHODS and properties of objects.

It's a library or framework that help you to map/convert your models in to tables in your database, It's like a mediator or an intermediate that avoid that you have to write SQL code and allows you to interact with the DB using a programming language like groovy without have to worry about write SQL code or what kind of database are you using, you can switch from mySql to Oracle DB modifying only 4 lines of code, an example of what is an ORM It's the Hibernate Framework.

means object relational mapping, A simple answer is that you wrap your tables or stored procedures in classes in your programming language, so that instead of writing SQL statements to interact with your database, you use methods and properties of objects.

It's a library or framework that help you to map/convert your models in to tables in your database, It's like a mediator or an intermediate that avoid that you have to write SQL code and allows you to interact with the DB using a programming language like groovy without have to worry about write SQL code or what kind of database are you using, you can switch from mySql to Oracle DB modifying only 4 lines of code, an example of what is an ORM It's the Hibernate Framework.

Grails is an open source web application framework that uses the Groovy and Java as programming language, this framework use another frameworks LIKE SPRING, Hibernate, SiteMesh and have and embebed H2 database, Tomcat server and ORM(GORM). this framework follow some design patters as Model VIEW Controller(MVC), Convention Over Configuration(CoC), Don't REPEAT yourself(DRY) and runs over the Java Virtual Machine(JVM).

Grails is an open source web application framework that uses the Groovy and Java as programming language, this framework use another frameworks like Spring, Hibernate, SiteMesh and have and embebed H2 database, Tomcat server and ORM(GORM). this framework follow some design patters as Model View Controller(MVC), Convention Over Configuration(CoC), Don't repeat yourself(DRY) and runs over the Java Virtual Machine(JVM).

EXPANDOMETACLASS is used to add METHODS, properties, STATIC methods and constructors. Expandoclass does not inherited by default; you have to call ExpandoMetaClass.enableGlobally().

ExpandoMetaClass is used to add methods, properties, static methods and constructors. Expandoclass does not inherited by default; you have to call ExpandoMetaClass.enableGlobally().

Groovy string is referred as Gstring.

• It is surrounded by DOUBLE quotes, for regular strings it uses single quotes
• It MAY contain Groovy EXPRESSIONS NOTED in ${}
• Square bracket syntax may be applied like charAt(i)

Groovy string is referred as Gstring.

GROOVY DEPEND at runtime on the ASM LIBRARY as well as JAVA 1.4 and the Groovy jar.

Groovy depend at runtime on the ASM library as well as Java 1.4 and the Groovy jar.

You can INCLUDE a groovy script with ANOTHER groovy by using the FOLLOWING code. When put this code at the top of the script it will bring in the contents of a groovy file.

EVALUATE(new file(“../tools/Tools.groovy”))

You can include a groovy script with another groovy by using the following code. When put this code at the top of the script it will bring in the contents of a groovy file.

Evaluate(new file(“../tools/Tools.groovy”))

You can ADD THINGS to your $CLASSPATH ENVIRONMENT variable. Another POSSIBILITY is to BUILD a .groovy/lib directory in your home directory and append whatever jars you want to be available by default.

You can add things to your $CLASSPATH environment variable. Another possibility is to build a .groovy/lib directory in your home directory and append whatever jars you want to be available by default.

Groovysh is a command line application that enables an EASY access to evaluate Groovy expressions, DEFINE CLASSES and RUN experiments.

Groovysh is a command line application that enables an easy access to evaluate Groovy expressions, define classes and run experiments.

GROOVY does not support anonymous inner classes; it is POSSIBLE to determine action listeners inline through the means of CLOSURES. In Groovy, listeners CLOSURE are USED as a ListenerAdapter where only one method of interest is overridden.

Groovy does not support anonymous inner classes; it is possible to determine action listeners inline through the means of closures. In Groovy, listeners closure are used as a ListenerAdapter where only one method of interest is overridden.

Like MULTILINE COMMENTS, GroovyDoc comments are multiline but it starts with a /** and end with */. Those comments are related with

• Type DEFINITIONS (classes, interfaces, enums, annotations)
• FIELDS and PROPERTIES definitions
• Methods definitions

Like multiline comments, GroovyDoc comments are multiline but it starts with a /** and end with */. Those comments are related with

Groovy has added NEW METHODS compare to old version LIKE

• Various array types and object streams with newly Groovy ORIENTED methods like Object.every(), Object.each() etc. and ALSO include new features like “String BufferedReader.getText()” and “InputStream.eachLine(Closure)”.

Groovy has added new methods compare to old version like

GRAPE is a JAR dependency manager included into GROOVY. It allows you to add quickly maven repository dependencies to your CLASSPATH, making scripting EASIER. The SIMPLEST use is adding an annotation to your script.

Grape is a JAR dependency manager included into Groovy. It allows you to add quickly maven repository dependencies to your classpath, making scripting easier. The simplest use is adding an annotation to your script.

Groovy supports plain script; it does not require a class DECLARATION. At the front of the script, imports are supported at the same WAY that it can be at the front of a class. In Groovy, you have to USE word def to declare a function OUTSIDE of a class.

Groovy supports plain script; it does not require a class declaration. At the front of the script, imports are supported at the same way that it can be at the front of a class. In Groovy, you have to use word def to declare a function outside of a class.

The JsonSlurper is a class that parses JSON TEXT or reader content into Groovy data STRUCTURES (OBJECTS) such as lists, maps, and PRIMITIVE types like double, Boolean, string and Integer.

The JsonSlurper is a class that parses JSON text or reader content into Groovy data structures (objects) such as lists, maps, and primitive types like double, Boolean, string and Integer.

Groovy depends on JDK 1.4 or later. Common ERRORS PEOPLE have when TRYING to RUN Groovy is that there’s an old groovy jar on the CLASSPATH somewhere (have you CHECKED in java/lib/ext?) or that JAVA_HOME points to an old JDK before JDK 1.

Groovy depends on JDK 1.4 or later. Common errors people have when trying to run Groovy is that there’s an old groovy jar on the CLASSPATH somewhere (have you checked in java/lib/ext?) or that JAVA_HOME points to an old JDK before JDK 1.

• GROOVY can be slower
• Groovy MIGHT need lots of memory
• Groovy start up time requires improvement
• It requires Java KNOWLEDGE
• It takes sometimes to get USE to like New SYNTAX, closures, default typing,
• Documentation is thin

You can add THINGS to your $CLASSPATH environment variable. Another popular option is to create a .groovy/lib directory in your home directory and add whatever jars you want to be available by DEFAULT. e.g. if you wish to connect to your favourite JDBC database and do some scripting with it then add your JDBC driver to ~/.groovy/lib.

You can add things to your $CLASSPATH environment variable. Another popular option is to create a .groovy/lib directory in your home directory and add whatever jars you want to be available by default. e.g. if you wish to connect to your favourite JDBC database and do some scripting with it then add your JDBC driver to ~/.groovy/lib.

The “propertyMissing (STRING)” METHOD is CALLED when no GETTER method for a given PROPERTY can be detected by the Groovy runtime.

The “propertyMissing (String)” method is called when no getter method for a given property can be detected by the Groovy runtime.

Groovy is open SOURCE using a BSD / APACHE STYLE licence

Groovy is open source using a BSD / Apache style licence

• For Java programmers it provides familiar SYNTAX
• It has a RICH stock of Java Libraries
• It EASILY integrate with your existing infrastructure like Servlet CONTAINERS, App Servers, Loads of DATABASES with JDBC drivers,
• Completely Object Oriented
• It possesses a reusable and assignable pieces of code
• Operators can be overloaded
• Literal declaration for maps, arrays, ranges and regular expressions
• It has efficient object navigation