org.mvel2.integration.impl
Class ImmutableDefaultFactory

java.lang.Object
  org.mvel2.integration.impl.ImmutableDefaultFactory

All Implemented Interfaces:

Serializable, VariableResolverFactory

public class ImmutableDefaultFactory
extends Object
implements VariableResolverFactory

See Also:

Serialized Form

Constructor Summary

ImmutableDefaultFactory()

Method Summary

VariableResolver	createIndexedVariable(int index, String name, Object value)
VariableResolver	createIndexedVariable(int index, String name, Object value, Class<?> typee)
VariableResolver	createVariable(String name, Object value) Creates a new variable.
VariableResolver	createVariable(String name, Object value, Class<?> type) Creates a new variable, and assigns a static type.
VariableResolver	getIndexedVariableResolver(int index)
Set<String>	getKnownVariables() Return a list of known variables inside the factory.
VariableResolverFactory	getNextFactory() Returns the next factory in the factory chain.
VariableResolver	getVariableResolver(String name) Return a variable resolver for the specified variable name.
boolean	isIndexedFactory()
boolean	isResolveable(String name) Determines whether or not the variable is resolver in the chain of factories.
boolean	isTarget(String name) Deterimines whether or not the current VariableResolverFactory is the physical target for the actual variable.
VariableResolver	setIndexedVariableResolver(int index, VariableResolver variableResolver)
VariableResolverFactory	setNextFactory(VariableResolverFactory resolverFactory) Sets the next factory in the chain.
int	variableIndexOf(String name)

Methods inherited from class java.lang.Object

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

Constructor Detail

ImmutableDefaultFactory

public ImmutableDefaultFactory()

Method Detail

createVariable

public VariableResolver createVariable(String name,
                                       Object value)

Description copied from interface: VariableResolverFactory

Creates a new variable. This probably doesn't need to be implemented in most scenarios. This is used for variable assignment.

Specified by:

createVariable in interface VariableResolverFactory

Parameters:

name - - name of the variable being created

value - - value of the variable

Returns:

instance of the variable resolver associated with the variable

createIndexedVariable

public VariableResolver createIndexedVariable(int index,
                                              String name,
                                              Object value)

Specified by:

createIndexedVariable in interface VariableResolverFactory

createVariable

public VariableResolver createVariable(String name,
                                       Object value,
                                       Class<?> type)

Description copied from interface: VariableResolverFactory

Creates a new variable, and assigns a static type. It is expected the underlying factory and resolver will enforce this.

Specified by:

createVariable in interface VariableResolverFactory

Parameters:

name - - name of the variable being created

value - - value of the variable

type - - the static type

Returns:

instance of the variable resolver associated with the variable

createIndexedVariable

public VariableResolver createIndexedVariable(int index,
                                              String name,
                                              Object value,
                                              Class<?> typee)

Specified by:

createIndexedVariable in interface VariableResolverFactory

setIndexedVariableResolver

public VariableResolver setIndexedVariableResolver(int index,
                                                   VariableResolver variableResolver)

Specified by:

setIndexedVariableResolver in interface VariableResolverFactory

getNextFactory

public VariableResolverFactory getNextFactory()

Description copied from interface: VariableResolverFactory

Returns the next factory in the factory chain. MVEL uses a hierarchical variable resolution strategy, much in the same way as Classloaders in Java. For performance reasons, it is the responsibility of the individual VariableResolverFactory to pass off to the next one.

Specified by:

getNextFactory in interface VariableResolverFactory

Returns:

instance of the next factory - null if none.

setNextFactory

public VariableResolverFactory setNextFactory(VariableResolverFactory resolverFactory)

Description copied from interface: VariableResolverFactory

Sets the next factory in the chain. Proper implementation:

return this.nextFactory = resolverFactory;

Specified by:

setNextFactory in interface VariableResolverFactory

Parameters:

resolverFactory - - instance of next resolver factory

Returns:

- instance of next resolver factory

getVariableResolver

public VariableResolver getVariableResolver(String name)

Description copied from interface: VariableResolverFactory

Return a variable resolver for the specified variable name. This method is expected to traverse the heirarchy of ResolverFactories.

Specified by:

getVariableResolver in interface VariableResolverFactory

Parameters:

name - - variable name

Returns:

- instance of the VariableResolver for the specified variable

getIndexedVariableResolver

public VariableResolver getIndexedVariableResolver(int index)

Specified by:

getIndexedVariableResolver in interface VariableResolverFactory

isTarget

public boolean isTarget(String name)

Description copied from interface: VariableResolverFactory

Deterimines whether or not the current VariableResolverFactory is the physical target for the actual variable.

Specified by:

isTarget in interface VariableResolverFactory

Parameters:

name - - variable name

Returns:

- boolean indicating whether or not factory is the physical target

isResolveable

public boolean isResolveable(String name)

Description copied from interface: VariableResolverFactory

Determines whether or not the variable is resolver in the chain of factories.

Specified by:

isResolveable in interface VariableResolverFactory

Parameters:

name - - variable name

Returns:

- boolean

getKnownVariables

public Set<String> getKnownVariables()

Description copied from interface: VariableResolverFactory

Return a list of known variables inside the factory. This method should not recurse into other factories. But rather return only the variables living inside this factory.

Specified by:

getKnownVariables in interface VariableResolverFactory

Returns:

variableIndexOf

public int variableIndexOf(String name)

Specified by:

variableIndexOf in interface VariableResolverFactory

isIndexedFactory

public boolean isIndexedFactory()

Specified by:

isIndexedFactory in interface VariableResolverFactory