ee.telekom.workflow.graph.el

Class ElUtil

java.lang.Object

ee.telekom.workflow.graph.el.ElUtil

public class ElUtil
extends Object

Provides helper methods for Expression Language related operations

Author:

Erko Hansar

Constructor Summary

Constructors

Constructor and Description
ElUtil()

Method Summary

Modifier and Type	Method and Description
static boolean	hasBrackets(String condition) Checks if the given string starts with ${ and ends with } (the input is striped of whitespace first)
static javax.el.ELProcessor	initNewELProcessor(Environment environment, Long externalInstanceId) Creates and prepares a new ELProcessor instance with workflow engine configuration to evaluate expressions on workflow instance environment together with some additional features (NOW variable, WORKFLOW_INSTANCE_ID variable).
static boolean	isReservedVariable(String variableName) Checks if the given variable name is a reserved keyword and SHOULD NOT be used as a key for an Environment attribute.
static String	removeBrackets(String condition) After trimming the input, removes two characters from the start and one from the end and returns the result.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ElUtil

public ElUtil()

Method Detail

hasBrackets

public static boolean hasBrackets(String condition)

Checks if the given string starts with ${ and ends with } (the input is striped of whitespace first)

removeBrackets

public static String removeBrackets(String condition)

After trimming the input, removes two characters from the start and one from the end and returns the result.

initNewELProcessor

public static javax.el.ELProcessor initNewELProcessor(Environment environment,
                                                      Long externalInstanceId)

Creates and prepares a new ELProcessor instance with workflow engine configuration to evaluate expressions on workflow instance environment together with some additional features (NOW variable, WORKFLOW_INSTANCE_ID variable). The ELProcessor instance is meant to be used "quickly" only for current task execution/evaluation and should be discarded after that.

isReservedVariable

public static boolean isReservedVariable(String variableName)

Checks if the given variable name is a reserved keyword and SHOULD NOT be used as a key for an Environment attribute.