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java.lang.Object | +--org.apache.log4j.spi.ComponentBase | +--org.apache.log4j.config.PropertySetter
General purpose Object property setter. Clients repeatedly invokes
setProperty(name,value)
in order to invoke setters
on the Object specified in the constructor. This class relies on the
JavaBeans Introspector
to analyze the given Object Class using
reflection.
Usage:
PropertySetter ps = new PropertySetter(anObject); ps.set("name", "Joe"); ps.set("age", "32"); ps.set("isMale", "true");will cause the invocations anObject.setName("Joe"), anObject.setAge(32), and setMale(true) if such methods exist with those signatures. Otherwise an
IntrospectionException
are thrown.
Field Summary | |
static int |
AS_COLLECTION
|
static int |
AS_PROPERTY
|
protected java.beans.MethodDescriptor[] |
methodDescriptors
|
static int |
NOT_FOUND
|
protected java.lang.Object |
obj
|
protected java.lang.Class |
objClass
|
protected java.beans.PropertyDescriptor[] |
propertyDescriptors
|
Fields inherited from class org.apache.log4j.spi.ComponentBase |
repository |
Constructor Summary | |
PropertySetter(java.lang.Object obj)
Create a new PropertySetter for the specified Object. |
Method Summary | |
void |
addComponent(java.lang.String name,
java.lang.Object childComponent)
|
int |
canContainComponent(java.lang.String name)
|
protected java.lang.Object |
convertArg(java.lang.String val,
java.lang.Class type)
Convert val a String parameter to an object of a
given type. |
protected java.lang.reflect.Method |
getMethod(java.lang.String methodName)
|
java.lang.Class |
getObjClass()
|
protected java.beans.PropertyDescriptor |
getPropertyDescriptor(java.lang.String name)
|
protected void |
introspect()
Uses JavaBeans Introspector to computer setters of object to be
configured. |
void |
setComponent(java.lang.String name,
java.lang.Object childComponent)
|
void |
setProperties(java.util.Properties properties,
java.lang.String prefix)
Set the properites for the object that match the prefix
passed as parameter. |
void |
setProperty(java.beans.PropertyDescriptor prop,
java.lang.String name,
java.lang.String value)
Set the named property given a PropertyDescriptor . |
void |
setProperty(java.lang.String name,
java.lang.String value)
Set a property on this PropertySetter's Object. |
Methods inherited from class org.apache.log4j.spi.ComponentBase |
getLogger, setLoggerRepository |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
public static final int NOT_FOUND
public static final int AS_PROPERTY
public static final int AS_COLLECTION
protected java.lang.Object obj
protected java.lang.Class objClass
protected java.beans.PropertyDescriptor[] propertyDescriptors
protected java.beans.MethodDescriptor[] methodDescriptors
Constructor Detail |
public PropertySetter(java.lang.Object obj)
setProperty(java.lang.String, java.lang.String)
one or more times.
obj
- the object for which to set propertiesMethod Detail |
protected void introspect()
Introspector
to computer setters of object to be
configured.
public void setProperties(java.util.Properties properties, java.lang.String prefix)
prefix
passed as parameter.
public void setProperty(java.lang.String name, java.lang.String value)
If the setter expects a String no conversion is necessary. If it expects an int, then an attempt is made to convert 'value' to an int using new Integer(value). If the setter expects a boolean, the conversion is by new Boolean(value).
name
- name of the propertyvalue
- String value of the propertypublic void setProperty(java.beans.PropertyDescriptor prop, java.lang.String name, java.lang.String value) throws PropertySetterException
PropertyDescriptor
.
prop
- A PropertyDescriptor describing the characteristics
of the property to set.name
- The named of the property to set.value
- The value of the property.
PropertySetterException
public int canContainComponent(java.lang.String name)
public java.lang.Class getObjClass()
public void addComponent(java.lang.String name, java.lang.Object childComponent)
public void setComponent(java.lang.String name, java.lang.Object childComponent)
protected java.lang.Object convertArg(java.lang.String val, java.lang.Class type)
val
a String parameter to an object of a
given type.
protected java.lang.reflect.Method getMethod(java.lang.String methodName)
protected java.beans.PropertyDescriptor getPropertyDescriptor(java.lang.String name)
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