Groovy Bot
Cherrie Patete
It later made its way into the titles of albums, such as Groovy Decay, a 1982 album by Robyn Hitchcock, and Groovy, Laidback and Nasty, a 1990 album by Cabaret Voltaire. Examples of band names include Groovy Aardvark from Canada, The Groovy Little Numbers from Scotland, and Groovy Rednecks and the Flamin' Groovies from the US. There was also a band called Groovy Ruby.
E. B. White used the term in the 1970 novel The Trumpet of the Swan, which takes place in 1968. "'This is real groovy!' cried a boy in the front seat. 'That bird is as good as Louis Armstrong, the famous trumpet player.'"
I generated a customizable TestSuite which I would like to run in different setups from a groovy script. I found many extremely complex script suggestions to do this but couldn't get to run any of them. I therefore wanted to ask whether anyone could come up with an idea of how to achieve either running an entire testSuite from groovy or just a single testCase in ReadyApi 3.4.
Groovy console was one of heavily used dependencies in AEM projects I was working on. As far as I understand using the /apps/groovyconsole admin panel will not be an option for AEM as a cloud but I am exploring the ability to run groovy scripts automatically. Could you please advise what is the recommended approach for using groovy console in AEM as a Cloud world ? Do you see any scenario that would be problematic for AEM as a cloud ?
Could you also advise what's the recommended way to install groovy console in AEM as Cloud ? In old deployments we just installed a zip package via crx manager but it seems that this is not an option for AEM as a Cloud.
I tried to run it on the author on cloud service and it worked... The configurations for which we need to get into the system console can be done via OSGi so should not be a problem... For publisher just need to make sure /apps/groovyconsole.html accessible via dispatcher and the validator doesn't complain about it.
The only way to get joint compilation across JVM languages would be if every language supported an explicit stubbing mechanism. This is not the case, so joint compilation of Groovy and Kotlin is not possible
And I do kind of agree with Stefan regarding limiting the number of languages in a single project. On some days writing Java I wish I could exclusively use two alternative languages and skip out on Java completely though
Maybe interesting to know is that the clearest fail safe way to combine, in my view, is to have independent modules in a multi module project. Just put interfaces in java, have the modules implement them. Wire things up using dependency injection and let implementions be whatever jvm language.
So groovy and kotlin just use java interfaces and implement java interfaces. Both modules will do joint compilation wit java, no problems.
This chapter covers the syntax of the Groovy programming language.The grammar of the language derives from the Java grammar,but enhances it with specific constructs for Groovy, and allows certain simplifications.
A multiline comment starts with /* and can be found at any position in the line.The characters following /* will be considered part of the comment, including new line characters,up to the first */ closing the comment.Multiline comments can thus be put at the end of a statement, or even inside a statement.
Similarly to multiline comments, Groovydoc comments are multiline, but start with /** and end with */.Lines following the first Groovydoc comment line can optionally start with a star *.Those comments are associated with:
Beside the single-line comment, there is a special line comment, often called the shebang line understood by UNIX systemswhich allows scripts to be run directly from the command-line, provided you have installed the Groovy distributionand the groovy command is available on the PATH.
Using such names might be confusing and is often best to avoid.The trick is primarily intended to enable certain Java integration scenariosand certain DSL scenarios wherehaving "verbs" and "nouns" with the same name as keywords may be desirable.
Quoted identifiers appear after the dot of a dotted expression.For instance, the name part of the person.name expression can be quoted with person."name" or person.'name'.This is particularly interesting when certain identifiers contain illegal characters that are forbidden by the Java Language Specification,but which are allowed by Groovy when quoted. For example, characters like a dash, a space, an exclamation mark, etc.
Text literals are represented in the form of chain of characters called strings.Groovy lets you instantiate java.lang.String objects, as well as GStrings (groovy.lang.GString)which are also called interpolated strings in other programming languages.
Triple-single-quoted strings may span multiple lines.The content of the string can cross line boundaries without the need to split the string in several piecesand without concatenation or newline escape characters:
If your code is indented, for example in the body of the method of a class, your string will contain the whitespace of the indentation.The Groovy Development Kit contains methods for stripping out the indentation with the String#stripIndent() method,and with the String#stripMargin() method that takes a delimiter character to identify the text to remove from the beginning of a string.
Any Groovy expression can be interpolated in all string literals, apart from single and triple-single-quoted strings.Interpolation is the act of replacing a placeholder in the string with its value upon evaluation of the string.The placeholder expressions are surrounded by $. The curly braces may be omitted for unambiguous dotted expressions,i.e. we can use just a $ prefix in those cases.If the GString is ever passed to a method taking a String, the expression value inside the placeholderis evaluated to its string representation (by calling toString() on that expression) and the resultingString is passed to the method.
When a method (whether implemented in Java or Groovy) expects a java.lang.String,but we pass a groovy.lang.GString instance,the toString() method of the GString is automatically and transparently called.
Beyond the usual quoted strings, Groovy offers slashy strings, which use / as the opening and closing delimiter.Slashy strings are particularly useful for defining regular expressions and patterns,as there is no need to escape backslashes.
Dollar slashy strings are multiline GStrings delimited with an opening $/ and a closing /$.The escaping character is the dollar sign, and it can escape another dollar, or a forward slash.Escaping for the dollar and forward slash characters is only needed where conflicts arise withthe special use of those characters. The characters $foo would normally indicate a GStringplaceholder, so those four characters can be entered into a dollar slashy string by escaping the dollar, i.e. $$foo.Similarly, you will need to escape a dollar slashy closing delimiter if you want it to appear in your string.
Conveniently for exact decimal number calculations, Groovy chooses java.math.BigDecimal as its decimal number type.In addition, both float and double are supported, but require an explicit type declaration, type coercion or suffix.Even if BigDecimal is the default for decimal numbers, such literals are accepted in methods or closures taking float or double as parameter types.
The division operators / (and /= for division and assignment) produce a double resultif either operand is a float or double, and a BigDecimal result otherwise(when both operands are any combination of an integral type short, char, byte, int, long,BigInteger or BigDecimal).
BigDecimal division is performed with the divide() method if the division is exact(i.e. yielding a result that can be represented within the bounds of the same precision and scale),or using a MathContext with a precisionof the maximum of the two operands' precision plus an extra precision of 10,and a scaleof the maximum of 10 and the maximum of the operands' scale.
The power operation is represented by the ** operator, with two parameters: the base and the exponent.The result of the power operation depends on its operands, and the result of the operation(in particular if the result can be represented as an integral value).
We mentioned that by default, list literals are actually instances of java.util.ArrayList,but it is possible to use a different backing type for our lists,thanks to using type coercion with the as operator, or with explicit type declaration for your variables:
You can access elements of the list with the [] subscript operator (both for reading and setting values)with positive indices or negative indices to access elements from the end of the list, as well as with ranges,and use the
Groovy has always supported literal list/array definitions using square bracketsand has avoided Java-style curly braces so as not to conflict with closure definitions.In the case where the curly braces come immediately after an array type declaration however,there is no ambiguity with closure definitions,so Groovy 3 and above support that variant of the Java array initialization expression.
Sometimes called dictionaries or associative arrays in other languages, Groovy features maps.Maps associate keys to values, separating keys and values with colons, and each key/value pairs with commas,and the whole keys and values surrounded by square brackets.
Here, we used numbers as keys, as numbers can unambiguously be recognized as numbers,so Groovy will not create a string key like in our previous examples.But consider the case you want to pass a variable in lieu of the key, to have the value of that variable become the key:
Bitwise operators can be applied on arguments which are of type byte, short, int, long, or BigInteger.If one of the arguments is a BigInteger, the result will be of type BigInteger;otherwise, if one of the arguments is a long, the result will be of type long;otherwise, the result will be of type int:
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