Package org.camunda.bpm.engine.impl.scripting.engine

Class ScriptBindings

java.lang.Object

org.camunda.bpm.engine.impl.scripting.engine.ScriptBindings

All Implemented Interfaces:

Map<String,Object>, Bindings

public class ScriptBindings
extends Object
implements Bindings

A Bindings implementation which wraps an existing binding and enhances the key / value map with read-only access to:

• variables provided in a VariableScope,
• additional bindings provided through a set of Resolvers.

Note on backwards compatibility: before 7.2 the Script bindings behaved in a way that all script variables were automatically exposed as process variables. You can enable this behavior by setting autoStoreScriptVariables.

Author:

Tom Baeyens, Daniel Meyer

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K extends Object,V extends Object>

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	autoStoreScriptVariables	if true, all script variables will be set in the variable scope.
protected List<Resolver>	scriptResolvers
protected static Set<String>	UNSTORED_KEYS	The script engine implementations put some key/value pairs into the binding.
protected VariableScope	variableScope
protected Bindings	wrappedBindings

Constructor Summary

Constructors

Constructor	Description
ScriptBindings(List<Resolver> scriptResolvers, VariableScope variableScope, Bindings wrappedBindings)

Method Summary

Modifier and Type	Method	Description
protected Map<String,Object>	calculateBindingMap()
void	clear()
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Set<Map.Entry<String,Object>>	entrySet()
Object	get(Object key)
protected boolean	isAutoStoreScriptVariablesEnabled()
boolean	isEmpty()
Set<String>	keySet()
Object	put(String name, Object value)
void	putAll(Map<? extends String,? extends Object> toMerge)
Object	remove(Object key)
int	size()
Collection<Object>	values()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, equals, forEach, getOrDefault, hashCode, merge, putIfAbsent, remove, replace, replace, replaceAll

Field Detail

UNSTORED_KEYS

protected static final Set<String> UNSTORED_KEYS

The script engine implementations put some key/value pairs into the binding. This list contains those keys, such that they wouldn't be stored as process variable. This list contains the keywords for JUEL, Javascript and Groovy.

scriptResolvers

protected List<Resolver> scriptResolvers

variableScope

protected VariableScope variableScope

wrappedBindings

protected Bindings wrappedBindings

autoStoreScriptVariables

protected boolean autoStoreScriptVariables

if true, all script variables will be set in the variable scope.

Constructor Detail

ScriptBindings

public ScriptBindings(List<Resolver> scriptResolvers,
                      VariableScope variableScope,
                      Bindings wrappedBindings)

Method Detail

isAutoStoreScriptVariablesEnabled

protected boolean isAutoStoreScriptVariablesEnabled()

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Bindings

Specified by:

containsKey in interface Map<String,Object>

get

public Object get(Object key)

Specified by:

get in interface Bindings

Specified by:

get in interface Map<String,Object>

put

public Object put(String name,
                  Object value)

Specified by:

put in interface Bindings

Specified by:

put in interface Map<String,Object>

entrySet

public Set<Map.Entry<String,Object>> entrySet()

Specified by:

entrySet in interface Map<String,Object>

keySet

public Set<String> keySet()

Specified by:

keySet in interface Map<String,Object>

size

public int size()

Specified by:

size in interface Map<String,Object>

values

public Collection<Object> values()

Specified by:

values in interface Map<String,Object>

putAll

public void putAll(Map<? extends String,? extends Object> toMerge)

Specified by:

putAll in interface Bindings

Specified by:

putAll in interface Map<String,Object>

remove

public Object remove(Object key)

Specified by:

remove in interface Bindings

Specified by:

remove in interface Map<String,Object>

clear

public void clear()

Specified by:

clear in interface Map<String,Object>

containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface Map<String,Object>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<String,Object>

calculateBindingMap

protected Map<String,Object> calculateBindingMap()