com.jdon.container.visitor.ComponentOriginalVisitor Maven / Gradle / Ivy
/*
* Copyright 2003-2006 the original author or authors.
* 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 com.jdon.container.visitor;
import com.jdon.container.ContainerWrapper;
import com.jdon.container.access.TargetMetaRequest;
import com.jdon.container.access.TargetMetaRequestsHolder;
import com.jdon.container.finder.ComponentKeys;
import com.jdon.container.finder.ContainerCallback;
import com.jdon.container.visitor.data.SessionContext;
import com.jdon.util.Debug;
/**
*
* original impleplements for target service components that will be cached
* this is default concrete class of componentVisitor, configured in contain.xml
* @see ComponentVisitor
* @author banq
*
*/
public class ComponentOriginalVisitor implements ComponentVisitor {
/**
*
*/
private static final long serialVersionUID = 4109265173603639132L;
private final static String module = ComponentOriginalVisitor.class.getName();
private final ContainerCallback containerCallback;
private final TargetMetaRequestsHolder targetMetaRequestsHolder;
public ComponentOriginalVisitor(ContainerCallback containerCallback, TargetMetaRequestsHolder targetMetaRequestsHolder) {
this.containerCallback = containerCallback;
this.targetMetaRequestsHolder = targetMetaRequestsHolder;
}
/**
* find the visitable component from container, and execute it's accept
* method, the return result is the tager service object.
*
*/
public Object visit() {
Object o = null;
try {
ContainerWrapper containerWrapper = containerCallback.getContainerWrapper();
TargetMetaRequest targetMetaRequest = targetMetaRequestsHolder.getTargetMetaRequest();
Debug.logVerbose("[JdonFramework] ComponentOriginalVisitor active:" + targetMetaRequest.getVisitableName(), module);
//targetMetaRequest.setVisitableName change the value
Visitable vo = (Visitable) containerWrapper.lookup(targetMetaRequest.getVisitableName());
o = vo.accept();
} catch (Exception ex) {
Debug.logError("[JdonFramework] ComponentOriginalVisitor active error: " + ex);
}
return o;
}
public SessionContext createSessionContext() {
SessionContext sc = null;
try {
ContainerWrapper containerWrapper = containerCallback.getContainerWrapper();
Visitable vo = (Visitable) containerWrapper.lookup(ComponentKeys.SESSIONCONTEXT_FACTORY);
sc = (SessionContext) vo.accept();
} catch (Exception ex) {
Debug.logError("[JdonFramework] ComponentOriginalVisitor createSessionContext error: " + ex);
}
return sc;
}
}