org.apache.commons.beanutils
Class DynaProperty

java.lang.Object
  extended by org.apache.commons.beanutils.DynaProperty
All Implemented Interfaces:
Serializable

public class DynaProperty
extends Object
implements Serializable

The metadata describing an individual property of a DynaBean.

The meta contains an optional content type property (getContentType()) for use by mapped and iterated properties. A mapped or iterated property may choose to indicate the type it expects. The DynaBean implementation may choose to enforce this type on its entries. Alternatively, an implementatin may choose to ignore this property. All keys for maps must be of type String so no meta data is needed for map keys.

Version:
$Revision: 926529 $ $Date: 2010-03-23 11:44:24 +0000 (Tue, 23 Mar 2010) $
Author:
Craig R. McClanahan
See Also:
Serialized Form

Field Summary
protected  Class contentType
          The (optional) type of content elements for indexed DynaProperty
protected  String name
          Property name
protected  Class type
          Property type
 
Constructor Summary
DynaProperty(String name)
          Construct a property that accepts any data type.
DynaProperty(String name, Class type)
          Construct a property of the specified data type.
DynaProperty(String name, Class type, Class contentType)
          Construct an indexed or mapped DynaProperty that supports (pseudo)-introspection of the content type.
 
Method Summary
 boolean equals(Object obj)
          Checks this instance against the specified Object for equality.
 Class getContentType()
          Gets the (optional) type of the indexed content for DynaProperty's that support this feature.
 String getName()
          Get the name of this property.
 Class getType()
          Gets the Java class representing the data type of the underlying property values.
 int hashCode()
           
 boolean isIndexed()
          Does this property represent an indexed value (ie an array or List)?
 boolean isMapped()
          Does this property represent a mapped value (ie a Map)?
 String toString()
          Return a String representation of this Object.
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
 

Field Detail

name

protected String name
Property name


type

protected transient Class type
Property type


contentType

protected transient Class contentType
The (optional) type of content elements for indexed DynaProperty

Constructor Detail

DynaProperty

public DynaProperty(String name)
Construct a property that accepts any data type.

Parameters:
name - Name of the property being described

DynaProperty

public DynaProperty(String name,
                    Class type)
Construct a property of the specified data type.

Parameters:
name - Name of the property being described
type - Java class representing the property data type

DynaProperty

public DynaProperty(String name,
                    Class type,
                    Class contentType)
Construct an indexed or mapped DynaProperty that supports (pseudo)-introspection of the content type.

Parameters:
name - Name of the property being described
type - Java class representing the property data type
contentType - Class that all indexed or mapped elements are instances of
Method Detail

getName

public String getName()
Get the name of this property.

Returns:
the name of the property

getType

public Class getType()

Gets the Java class representing the data type of the underlying property values.

There are issues with serializing primitive class types on certain JVM versions (including java 1.3). Therefore, this field must not be serialized using the standard methods.

Please leave this field as transient

Returns:
the property type

getContentType

public Class getContentType()
Gets the (optional) type of the indexed content for DynaProperty's that support this feature.

There are issues with serializing primitive class types on certain JVM versions (including java 1.3). Therefore, this field must not be serialized using the standard methods.

Returns:
the Class for the content type if this is an indexed DynaProperty and this feature is supported. Otherwise null.

isIndexed

public boolean isIndexed()
Does this property represent an indexed value (ie an array or List)?

Returns:
true if the property is indexed (i.e. is a List or array), otherwise false

isMapped

public boolean isMapped()
Does this property represent a mapped value (ie a Map)?

Returns:
true if the property is a Map otherwise false

equals

public boolean equals(Object obj)
Checks this instance against the specified Object for equality. Overrides the default refererence test for equality provided by Object.equals(Object)

Overrides:
equals in class Object
Parameters:
obj - The object to compare to
Returns:
true if object is a dyna property with the same name type and content type, otherwise false
Since:
1.8.0

hashCode

public int hashCode()
Overrides:
hashCode in class Object
Returns:
the hashcode for this dyna property
Since:
1.8.0
See Also:
Object.hashCode()

toString

public String toString()
Return a String representation of this Object.

Overrides:
toString in class Object
Returns:
a String representation of the dyna property


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