org.flowable.common.engine.impl.el.function

Class VariableGetOrDefaultExpressionFunction

java.lang.Object

org.flowable.common.engine.impl.el.function.AbstractFlowableShortHandExpressionFunction

org.flowable.common.engine.impl.el.function.AbstractFlowableVariableExpressionFunction

org.flowable.common.engine.impl.el.function.VariableGetOrDefaultExpressionFunction

All Implemented Interfaces:

FlowableExpressionEnhancer, FlowableFunctionDelegate, FlowableShortHandExpressionFunction

public class VariableGetOrDefaultExpressionFunction
extends AbstractFlowableVariableExpressionFunction

Returns the value of a variable, or a default if the value is null. This avoids the PropertyNotFoundException that otherwise gets thrown when referencing a variable in JUEL.

Author:

Joram Barrez

Field Summary

Fields inherited from class org.flowable.common.engine.impl.el.function.AbstractFlowableShortHandExpressionFunction

functionName, localName, method, pattern, prefix, replacePattern, variableScopeName

Constructor Summary

Constructors

Constructor and Description
VariableGetOrDefaultExpressionFunction(String variableScopeName)

Method Summary

Modifier and Type	Method and Description
static Object	getOrDefault(VariableScope variableScope, String variableName, Object value)

Methods inherited from class org.flowable.common.engine.impl.el.function.AbstractFlowableVariableExpressionFunction

getFinalFunctionPrefix, getFunctionPrefixOptions, getVariableValue, isMultiParameterFunction, prefix, valuesAreNumbers

Methods inherited from class org.flowable.common.engine.impl.el.function.AbstractFlowableShortHandExpressionFunction

buildOrWordGroup, enhance, findMethod, functionMethod, isNoParameterMethod, localName

Methods inherited from class java.lang.Object

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

Constructor Detail

VariableGetOrDefaultExpressionFunction

public VariableGetOrDefaultExpressionFunction(String variableScopeName)

Method Detail

getOrDefault

public static Object getOrDefault(VariableScope variableScope,
                                  String variableName,
                                  Object value)