boolean
The boolean type has two possible values: true or false.
Operators
The table below lists the EPL operators that you can use with Boolean values.
False sorts before true.
Methods
The following methods may be called on variables of boolean type:
BooleanMethods
canParse() — returns
true if the string argument can be successfully parsed.
parse() — method that returns the
boolean instance represented by the
string argument. You can call this method on the
boolean type or on an instance of a
boolean type. The more typical use is to call
parse() directly on the
boolean type.
The
parse() method takes a single string as its argument. This string must be the string form of a
boolean object. The string must adhere to the format described in
Deploying and Managing Apama Applications,
Event file format. For example:
boolean a;
a := boolean.parse("true");
You can specify the parse() method after an expression or type name. If the correlator is unable to parse the string, it is a runtime error and the monitor instance that the EPL is running in terminates.
toString() – returns a
string representation of the
boolean. The return value is "
true" if the referenced Boolean’s value is
true. The return value is "
false" if the referenced Boolean’s value is
false.
Copyright © 2013
Software AG, Darmstadt, Germany and/or Software AG USA Inc., Reston, VA, USA, and/or Terracotta Inc., San Francisco, CA, USA, and/or Software AG (Canada) Inc., Cambridge, Ontario, Canada, and/or, Software AG (UK) Ltd., Derby, United Kingdom, and/or Software A.G. (Israel) Ltd., Or-Yehuda, Israel and/or their licensors.
