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java.lang.Objectorg.apache.jcs.utils.config.PropertySetter
public class PropertySetter
This class is based on the log4j class org.apache.log4j.config.PropertySetter that was made by Anders Kristensen
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 | |
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protected Object |
obj
Description of the Field |
protected PropertyDescriptor[] |
props
Description of the Field |
Constructor Summary | |
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PropertySetter(Object obj)
Create a new PropertySetter for the specified Object. |
Method Summary | |
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protected Object |
convertArg(String val,
Class type)
Convert val a String parameter to an object of a given type. |
protected PropertyDescriptor |
getPropertyDescriptor(String name)
Gets the propertyDescriptor attribute of the PropertySetter object |
protected void |
introspect()
Uses JavaBeans Introspector to computer setters of object to be configured. |
static void |
setProperties(Object obj,
Properties properties,
String prefix)
Set the properties of an object passed as a parameter in one go. |
void |
setProperties(Properties properties,
String prefix)
Set the properties for the object that match the prefix passed as parameter. |
void |
setProperty(PropertyDescriptor prop,
String name,
String value)
Set the named property given a PropertyDescriptor . |
void |
setProperty(String name,
String value)
Set a property on this PropertySetter's Object. |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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protected Object obj
protected PropertyDescriptor[] props
Constructor Detail |
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public PropertySetter(Object obj)
setProperty(java.lang.String, java.lang.String)
one or more times.
obj
- the object for which to set propertiesMethod Detail |
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protected void introspect()
Introspector
to computer setters of object to be configured.
public static void setProperties(Object obj, Properties properties, String prefix)
properties
are parsed relative to a prefix
.
obj
- The object to configure.properties
- A java.util.Properties containing keys and values.prefix
- Only keys having the specified prefix will be set.public void setProperties(Properties properties, String prefix)
prefix
passed as parameter.
properties
- The new properties valueprefix
- The new properties valuepublic void setProperty(String name, 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(PropertyDescriptor prop, String name, 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
protected Object convertArg(String val, Class type)
val
a String parameter to an object of a given type.
val
- type
-
protected PropertyDescriptor getPropertyDescriptor(String name)
name
-
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