de.aristaflow.adept2.model.filter

Interface Attribute

All Superinterfaces:

java.io.Serializable

public interface Attribute
extends java.io.Serializable

Represents an attribute that can be filtered and the path of methods through the containing objects that must be called to retrieve it

Author:

Christoph Muessel, Jonas Wolz

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.Object	INVALID_VALUE An object instance used to signal a invalid return value for getValue()
static long	serialVersionUID Generated ID for serialisation.

Method Summary

Modifier and Type	Method and Description
java.lang.String[]	getAttributePath() Returns the names of the attributes that must be retrieved to get the value of the attribute
java.lang.Object	getValue(java.lang.Object owner) Retrieves the attribute value for a specified parent object, i.e. goes through the path of methods beginning with owner
java.lang.Class<?>	getValueType() Retrieves the data type of the attribute.

Field Detail

serialVersionUID

static final long serialVersionUID

Generated ID for serialisation.

See Also:

Constant Field Values

INVALID_VALUE

static final java.lang.Object INVALID_VALUE

An object instance used to signal a invalid return value for getValue()

Method Detail

getAttributePath

java.lang.String[] getAttributePath()

Returns the names of the attributes that must be retrieved to get the value of the attribute

Returns:

an array of Strings

getValue

java.lang.Object getValue(java.lang.Object owner)

Retrieves the attribute value for a specified parent object, i.e. goes through the path of methods beginning with owner

Parameters:

owner - the object to which the first method of the array is applied

Returns:

the return value of the last method in the array or INVALID_VALUE if the calling filter should not match in any case

getValueType

java.lang.Class<?> getValueType()

Retrieves the data type of the attribute.

Returns:

the attribute type