donaldp 2002/11/13 23:41:11
Added: info/src/java/org/apache/avalon/framework/info
SchemaDescriptor.java
Log:
Add descriptor for schema of of configuration/parameters
Revision Changes Path
1.1
jakarta-avalon-excalibur/info/src/java/org/apache/avalon/framework/info/SchemaDescriptor.java
Index: SchemaDescriptor.java
===================================================================
/*
* Copyright (C) The Apache Software Foundation. All rights reserved.
*
* This software is published under the terms of the Apache Software License
* version 1.1, a copy of which has been included with this distribution in
* the LICENSE.txt file.
*/
package org.apache.avalon.framework.info;
/**
* A descriptor describing the schema to validate the components
* [EMAIL PROTECTED] org.apache.avalon.framework.parameters.Parameters} or
* [EMAIL PROTECTED] org.apache.avalon.framework.configuration.Configuration}
* object. If a component is neither
* [EMAIL PROTECTED] org.apache.avalon.framework.parameters.Parameterizable}
* nor [EMAIL PROTECTED]
org.apache.avalon.framework.configuration.Configurable}
* then this descriptor will hold empty values for location, category
* and type.
*
* <p>Associated with each Schema is a set of arbitrary
* Attributes that can be used to store extra information
* about Schema requirements.</p>
*
* @author <a href="mailto:peter at apache.org">Peter Donald</a>
* @version $Revision: 1.1 $ $Date: 2002/11/14 07:41:11 $
*/
public class SchemaDescriptor
extends FeatureDescriptor
{
/**
* The category of input data that this descriptor is for.
* Currently must be one of eeither "parameters" or
* "configuration".
*/
private final String m_category;
/**
* The location of schema relative to component.
*/
private final String m_location;
/**
* The type of the schema.
*/
private final String m_type;
/**
* Create a Schema descriptor.
*
* @param category the category of the schema.
* @param location the location of schema relative to component
* @param type the type of the schema
* @param attributes the attributes associated with schema
*/
public SchemaDescriptor( final String category,
final String location,
final String type,
final Attribute[] attributes )
{
super( attributes );
if( null == category )
{
throw new NullPointerException( "category" );
}
if( null == location )
{
throw new NullPointerException( "location" );
}
if( null == type )
{
throw new NullPointerException( "type" );
}
if( !"parameters".equals( category ) &&
!"configuration".equals( category ) )
{
final String message = "category = " + category + ". Should be" +
"parameters or configuration";
throw new IllegalArgumentException( message );
}
m_category = category;
m_location = location;
m_type = type;
}
/**
* Return the category of the schema. ie What it is used for.
* Usually one of "configuration" or "parameters".
*
* @return the category of the schema
*/
public String getCategory()
{
return m_category;
}
/**
* Return the location of the schema relative to the component.
*
* @return the location of the schema relative to the component.
*/
public String getLocation()
{
return m_location;
}
/**
* Return the type of the schema.
* Usually represented as a URI referring to schema
* namespace declaration.
*
* @return the type of the schema
*/
public String getType()
{
return m_type;
}
}
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