org.openmdx.preferences2.aop2.NodeImpl Maven / Gradle / Ivy
/*
* ====================================================================
* Project: openMDX/Core, http://www.openmdx.org/
* Description: Preferences Node plug-in
* Owner: OMEX AG, Switzerland, http://www.omex.ch
* ====================================================================
*
* This software is published under the BSD license as listed below.
*
* Copyright (c) 2012, OMEX AG, Switzerland
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of the openMDX team nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* ------------------
*
* This product includes software developed by other organizations as
* listed in the NOTICE file.
*/
package org.openmdx.preferences2.aop2;
import javax.jdo.JDOUserCallbackException;
import javax.jdo.listener.StoreCallback;
import org.openmdx.base.aop2.AbstractObject;
import org.openmdx.preferences2.jmi1.Node;
/**
* Node plug-in
*/
public class NodeImpl<
S extends org.openmdx.preferences2.jmi1.Node,
N extends org.openmdx.preferences2.cci2.Node
> extends AbstractObject implements StoreCallback {
/**
* Constructor
*
* @param same
* @param next
*/
public NodeImpl(S same, N next) {
super(same, next);
}
/**
* Tests whether name and parent are consistent:
* The root node and only the root node has an empty name
*
* @return true if name and parent are consistent
*/
protected boolean isConsistent(){
S same = sameObject();
Node parent = same.getParent();
String name = same.getName();
return (parent == null) == "".equals(name);
}
/**name
* Sets a new value for the attribute name.
*
* This attribute is not changeable, i.e. its value can be set as long as the object is TRANSIENT or NEW
*
* The root node has a node name of the empty string ("").
* Every other node has an arbitrary node name, specified at the time it is created.
* The only restrictions on this name are that it cannot be the empty string, and it cannot contain the slash character ('/').
* @param name The non-null new value for attribute name.
*
* @exception NullPointerException if name is null
* @exception IllegalArgumentException if name contains a '/' character
*
*/
public void setName(
java.lang.String name
){
if(name.indexOf('/') < 0) {
nextObject().setName(name);
} else {
throw new IllegalArgumentException(
"The name must not contain a '/'"
);
}
}
/**
* Retrieves the value for the attribute name.
*
* The root node has a node name of the empty string ("").
* Every other node has an arbitrary node name, specified at the time it is created.
* The only restrictions on this name are that it cannot be the empty string, and it cannot contain the slash character ('/').
* @return The non-null value for attribute name.
*/
public java.lang.String getName(
){
String name = nextObject().getName();
return name == null ? "" : name;
}
/**
* Retrieves the value for the attribute absolutePath.
*
* The root node has an absolute path name of "/".
* Children of the root node have absolute path names of "/" + .
* All other nodes have absolute path names of + "/" + .
* Note that all absolute path names begin with the slash character.
* @return The non-null value for attribute absolutePath.
*/
public java.lang.String getAbsolutePath(
){
if(isConsistent()) {
S same = sameObject();
Node parent = same.getParent();
if(parent == null) {
return "/";
} else {
String parentPath = parent.getAbsolutePath();
String delimiter = "/".equals(parentPath) ? "" : "/";
return parentPath + delimiter + same.getName();
}
} else {
throw new JDOUserCallbackException(
"The absolute path can be determined only of parent and name are set consistently"
);
}
}
/* (non-Javadoc)
* @see org.openmdx.base.aop2.AbstractObject#jdoPreStore()
*/
@Override
public void jdoPreStore(
){
if(isConsistent()) {
super.jdoPreStore();
} else {
throw new JDOUserCallbackException(
"The root node and only the root node has an empty name"
);
}
}
}