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

Class BooleanGetExecutor

java.lang.Object

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

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

org.apache.commons.jexl3.internal.introspection.BooleanGetExecutor

All Implemented Interfaces:

JexlPropertyGet

public final class BooleanGetExecutor
extends AbstractExecutor.Get

Specialized executor to get a boolean property from an object.

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 java.lang.String	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	BooleanGetExecutor(java.lang.Class<?> clazz, java.lang.reflect.Method method, java.lang.String key)	Creates an instance by attempting discovery of the get method.

Method Summary

Modifier and Type	Method	Description
static BooleanGetExecutor	discover(Introspector is, java.lang.Class<?> clazz, java.lang.String property)	Discovers a BooleanGetExecutor.
java.lang.Object	getTargetProperty()	Gets the property targeted by this executor.
java.lang.Object	invoke(java.lang.Object obj)	Method used to get the property value of an object.
java.lang.Object	tryInvoke(java.lang.Object obj, java.lang.Object key)	Attempts to reuse this JexlPropertyGet, 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.JexlPropertyGet

isCacheable, isConstant, tryFailed

Field Detail

property

private final java.lang.String property

The property.

Constructor Detail

BooleanGetExecutor

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

Creates an instance by attempting discovery of the get method.

Parameters:

clazz - the class to introspect

method - the method held by this executor

key - the property to get

Method Detail

discover

public static BooleanGetExecutor discover(Introspector is,
                                          java.lang.Class<?> clazz,
                                          java.lang.String property)

Discovers a BooleanGetExecutor.

The method to be found should be named "is{P,p}property and return a boolean.

Parameters:

is - the introspector

clazz - the class to find the get method from

property - the property name

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)
                        throws java.lang.IllegalAccessException,
                               java.lang.reflect.InvocationTargetException

Description copied from interface: JexlPropertyGet

Method used to get the property value of an object.

Parameters:

obj - the object to get the property value from.

Returns:

the property value.

Throws:

java.lang.IllegalAccessException

java.lang.reflect.InvocationTargetException

tryInvoke

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

Description copied from interface: JexlPropertyGet

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

Parameters:

obj - the object to invoke the property get upon

key - the property key to get

Returns:

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