/*
* Copyright 2010 JBoss Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.drools.container.spring.namespace;
import java.util.List;
import org.drools.builder.DecisionTableInputType;
import org.drools.builder.ResourceType;
import org.drools.builder.conf.impl.DecisionTableConfigurationImpl;
import org.drools.container.spring.beans.DroolsResourceAdapter;
import org.springframework.beans.factory.support.AbstractBeanDefinition;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.xml.AbstractBeanDefinitionParser;
import org.springframework.beans.factory.xml.ParserContext;
import org.springframework.util.StringUtils;
import org.springframework.util.xml.DomUtils;
import org.w3c.dom.Element;
public class ResourceDefinitionParser extends AbstractBeanDefinitionParser {
private static final String WORKSHEET_NAME_ATTRIBUTE = "worksheet-name";
private static final String INPUT_TYPE_ATTRIBUTE = "input-type";
private static final String TYPE_ATTRIBUTE = "type";
private static final String SOURCE_ATTRIBUTE = "source";
private static final String BASIC_AUTHENTICATION_ATTRIBUTE = "basic-authentication";
private static final String USERNAME_ATTRIBUTE = "username";
private static final String PASSWORD_ATTRIBUTE = "password";
private static final String REF = "ref";
private static final String NAME = "name";
private static final String DESCRIPTION = "description";
@SuppressWarnings("unchecked")
@Override
protected AbstractBeanDefinition parseInternal(Element element,
ParserContext parserContext) {
BeanDefinitionBuilder factory = BeanDefinitionBuilder.rootBeanDefinition( DroolsResourceAdapter.class );
if ( StringUtils.hasText( element.getAttribute( REF ) ) ) {
String ref = element.getAttribute( REF );
emptyAttributeCheck( element.getLocalName(),
REF,
ref );
return (AbstractBeanDefinition) parserContext.getRegistry().getBeanDefinition( ref );
}
String source = element.getAttribute( SOURCE_ATTRIBUTE );
emptyAttributeCheck( element.getLocalName(),
SOURCE_ATTRIBUTE,
source );
factory.addPropertyValue( "resource",
source );
String type = element.getAttribute( TYPE_ATTRIBUTE );
String resourceType = type == null || type.length() == 0 ? ResourceType.DRL.getName() : type;
factory.addPropertyValue( "resourceType",
resourceType );
boolean basicAuthenticationEnabled = element.getAttribute( BASIC_AUTHENTICATION_ATTRIBUTE ) != null && element.getAttribute( BASIC_AUTHENTICATION_ATTRIBUTE ).equalsIgnoreCase( "enabled" );
factory.addPropertyValue( "basicAuthenticationEnabled",
basicAuthenticationEnabled );
if ( basicAuthenticationEnabled ) {
String username = element.getAttribute( USERNAME_ATTRIBUTE );
factory.addPropertyValue( "basicAuthenticationUsername",
username );
String password = element.getAttribute( PASSWORD_ATTRIBUTE );
factory.addPropertyValue( "basicAuthenticationPassword",
password );
}
String name = element.getAttribute( NAME );
factory.addPropertyValue( "name",
name.isEmpty()? null : name );
String description = element.getAttribute( DESCRIPTION );
factory.addPropertyValue( "description",
description.isEmpty()? null : description );
if ( "xsd".equals( resourceType.toLowerCase() ) ) {
XsdParser.parse( element,
parserContext,
factory );
} else if ( "dtable".equals( resourceType.toLowerCase() ) ) {
List<Element> childElements = DomUtils.getChildElementsByTagName( element,
"decisiontable-conf" );
if ( !childElements.isEmpty() ) {
Element conf = childElements.get( 0 );
DecisionTableConfigurationImpl dtableConf = new DecisionTableConfigurationImpl();
String inputType = conf.getAttribute( INPUT_TYPE_ATTRIBUTE );
emptyAttributeCheck( conf.getLocalName(),
INPUT_TYPE_ATTRIBUTE,
inputType );
dtableConf.setInputType( DecisionTableInputType.valueOf( inputType ) );
String worksheetName = conf.getAttribute( WORKSHEET_NAME_ATTRIBUTE );
emptyAttributeCheck( conf.getLocalName(),
WORKSHEET_NAME_ATTRIBUTE,
worksheetName );
dtableConf.setWorksheetName( worksheetName );
factory.addPropertyValue( "resourceConfiguration",
dtableConf );
}
}
return factory.getBeanDefinition();
}
public void emptyAttributeCheck(final String element,
final String attributeName,
final String attribute) {
if ( attribute == null || attribute.trim().equals( "" ) ) {
throw new IllegalArgumentException( "<" + element + "> requires a '" + attributeName + "' attribute" );
}
}
}