Boolean data type

Value range of the Boolean data type

A Boolean data type can assume one of two possible values:

• true
• false

Boolean values are used in FirstSpirit as return values of Input components and in expressions.

For further information on the Boolean data type, see the Sun API documentation: java.lang.Boolean

Definition

The Boolean data type can be explicitly used in expressions, e.g. for allocations

$CMS_SET(isValid, true)$

or in checks :

$CMS_IF(varName == true)$
  ...
$CMS_END_IF$

Definition using the standard input components

Different input components can be defined in the form area of a page or section template. These form elements can then be used to insert the actual editorial contents into the page. The Standard input components supported by FirstSpirit return different data types.

The following standard input components return an object of data type Boolean :

• CMS_INPUT_TOGGLE

Then, with the help of a $CMS_VALUE(...)$ instruction, methods can then be applied to this object:

$CMS_VALUE(IDENTIFIER.METHOD)$

Under IDENTIFIER , the resultnameparameter, defined in the input component, must be specified.

booleanValue

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compare(boolean, boolean)

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compareTo(Object)

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describeConstable

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equals(Object)

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getBoolean(String)

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getClass

The .getClass() (in Bean syntax: .class) method returns the class of the invoking object (cf. java.lang.Class).

Invocation:

$CMS_VALUE(myString.class)$
$CMS_VALUE(myString.getClass())$

Output:

java.lang.String

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hashCode(boolean)

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isCase(Object)

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isNull

The .isNull() (in Bean syntax: .isNull) method checks whether an expression or object is null , e.g. storeElement.isNull(). In the case of objects with complex values or objects, the object decides when it is null. The data type DomElement for example always contains an empty document, thus it is never null. For this reason, checking an empty DOM editor input component by using the method .isNull() returns the value false, whereas checking the component with .isEmpty() would return the value true.

The method .isNull() returns a Boolean value as the check result. true is the check result if the expression or object is null and false if not.

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logicalAnd(boolean, boolean)

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logicalOr(boolean, boolean)

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logicalXor(boolean, boolean)

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parseBoolean(String)

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print

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set(String, Object)

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toJSON

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toString

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toString(boolean)

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type

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valueOf(String)

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valueOf(boolean)

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