Package org.apache.commons.jexl3.internal.introspection

Class ListSetExecutor

java.lang.Object

org.apache.commons.jexl3.internal.introspection.AbstractExecutor

org.apache.commons.jexl3.internal.introspection.AbstractExecutor.Set

org.apache.commons.jexl3.internal.introspection.ListSetExecutor

All Implemented Interfaces:

JexlPropertySet

public final class ListSetExecutor
extends AbstractExecutor.Set

Specialized executor to set a property in a List or array.

Since:

2.0

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.commons.jexl3.internal.introspection.AbstractExecutor

AbstractExecutor.Get, AbstractExecutor.Method, AbstractExecutor.Set

Field Summary

Fields

Modifier and Type	Field	Description
private static java.lang.reflect.Method	ARRAY_SET	The java.lang.reflect.Array.get method used as an active marker in ListGet.
private static java.lang.reflect.Method	LIST_SET	The java.util.obj.set method used as an active marker in ListSet.
private java.lang.Integer	property	The property.

Fields inherited from class org.apache.commons.jexl3.internal.introspection.AbstractExecutor

method, objectClass, TRY_FAILED

Constructor Summary

Constructors

Modifier	Constructor	Description
private	ListSetExecutor(java.lang.Class<?> clazz, java.lang.reflect.Method method, java.lang.Integer key)	Creates an instance.

Method Summary

Modifier and Type	Method	Description
static ListSetExecutor	discover(Introspector is, java.lang.Class<?> clazz, java.lang.Object identifier, java.lang.Object value)	Attempts to discover a ListSetExecutor.
java.lang.Object	getTargetProperty()	Gets the property targeted by this executor.
java.lang.Object	invoke(java.lang.Object obj, java.lang.Object value)	Method used to set the property value of an object.
java.lang.Object	tryInvoke(java.lang.Object obj, java.lang.Object key, java.lang.Object value)	Attempts to reuse this JexlPropertySet, checking that it is compatible with the actual set of arguments.

Methods inherited from class org.apache.commons.jexl3.internal.introspection.AbstractExecutor

castInteger, castString, classOf, equals, equals, getMethod, getMethodName, getTargetClass, hashCode, initMarker, isAlive, isCacheable, makeArgs, tryFailed

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.commons.jexl3.introspection.JexlPropertySet

isCacheable, tryFailed

Field Detail

ARRAY_SET

private static final java.lang.reflect.Method ARRAY_SET

The java.lang.reflect.Array.get method used as an active marker in ListGet.

LIST_SET

private static final java.lang.reflect.Method LIST_SET

The java.util.obj.set method used as an active marker in ListSet.

property

private final java.lang.Integer property

The property.

Constructor Detail

ListSetExecutor

private ListSetExecutor(java.lang.Class<?> clazz,
                        java.lang.reflect.Method method,
                        java.lang.Integer key)

Creates an instance.

Parameters:

clazz - the class the set method applies to

method - the method called through this executor

key - the key to use as 1st argument to the set method

Method Detail

discover

public static ListSetExecutor discover(Introspector is,
                                       java.lang.Class<?> clazz,
                                       java.lang.Object identifier,
                                       java.lang.Object value)

Attempts to discover a ListSetExecutor.

Parameters:

is - the introspector

clazz - the class to find the get method from

identifier - the key to use as an argument to the get method

value - the value to use as argument in list.put(key, value)

Returns:

the executor if found, null otherwise

getTargetProperty

public java.lang.Object getTargetProperty()

Description copied from class: AbstractExecutor

Gets the property targeted by this executor.

Overrides:

getTargetProperty in class AbstractExecutor

Returns:

the target property

invoke

public java.lang.Object invoke(java.lang.Object obj,
                               java.lang.Object value)

Description copied from interface: JexlPropertySet

Method used to set the property value of an object.

Parameters:

obj - Object on which the property setter will be called with the value

value - value to be set

Returns:

the value returned from the set operation (impl specific)

tryInvoke

public java.lang.Object tryInvoke(java.lang.Object obj,
                                  java.lang.Object key,
                                  java.lang.Object value)

Description copied from interface: JexlPropertySet

Attempts to reuse this JexlPropertySet, checking that it is compatible with the actual set of arguments.

Parameters:

obj - the object to invoke the get upon

key - the property key to get

value - the property value to set

Returns:

the result of the method invocation that should be checked by tryFailed to determine if it succeeded or failed.